CLJ 8500 Service Manual

8/3/2019 CLJ 8500 Service Manual

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8500, 8500 N, 8500 DN Printer





HP Color LaserJet 8500,

8500 N, 8500 DN Printer



Copyright Information

© 1998 Hewlett-PackardCompany

All Rights Reserved.Reproduction, adaptations, ortranslation without prior writtenpermission is prohibited exceptas allowed under copyrightlaws.

Part number C3983-90954

First edition, October 1998Printed in USA

Warranty

The information contained inthis document is subject tochange without notice.

Hewlett-Packard makes nowarranty of any kind withrespect to this information.HEWLETT-PACKARDSPECIFICALLY DISCLAIMSTHE IMPLIED WARRANTY OFMERCHANTABILITY AND

FITNESS FOR APARTICULAR PURPOSE.

Hewlett-Packard shall not beliable for any direct, indirect,incidental, consequential, orother damage alleged inconnection with the furnishing oruse of this information.

NOTICE TO U.S.GOVERNMENT USERS:RESTRICTED RIGHTSCOMMERCIAL COMPUTERSOFTWARE: “Use, duplication,or disclosure by theGovernment is subject to

restrictions as set forth insubparagraph (c) (1)(ii) of theRights in Technical Data Clauseat DFARS 52.227-7013.

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Contents

List of figures

List of tables

1 Product information

Chapter contents. . . . . . . . . . . . . . . . . . . . . . . . . .Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . .Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .Site requirements . . . . . . . . . . . . . . . . . . . . . . . . .Media requirements. . . . . . . . . . . . . . . . . . . . . . . .

Identification (model and serial numbers) . . . . . . Product overview. . . . . . . . . . . . . . . . . . . . . . . . . .Safety information . . . . . . . . . . . . . . . . . . . . . . . . .

2 Service approach

Chapter contents. . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Parts and supplies. . . . . . . . . . . . . . . . . . . . . . . . .Technical assistance. . . . . . . . . . . . . . . . . . . . . . .Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Operational overview

Chapter contents. . . . . . . . . . . . . . . . . . . . . . . . . .Verifying package contents . . . . . . . . . . . . . . . . . .Verifying the cables are installed. . . . . . . . . . . . . .Connecting the printer to the network . . . . . . . . . Changing the printer control panel overlay . . . . . Printer control panel layout



4 Printer maintenance

Chapter contents. . . . . . . . . . . . . . . . . . . . . . . . . .Cleaning procedures . . . . . . . . . . . . . . . . . . . . . . .

Printer consumables . . . . . . . . . . . . . . . . . . . . . . .Installing consumables . . . . . . . . . . . . . . . . . . . . .

5 Theory of operation

Chapter contents. . . . . . . . . . . . . . . . . . . . . . . . . .Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Color theory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Image formation . . . . . . . . . . . . . . . . . . . . . . . . . .Consumable detection mechanisms . . . . . . . . . . Electrical systems . . . . . . . . . . . . . . . . . . . . . . . . .Mechanical systems . . . . . . . . . . . . . . . . . . . . . . .Paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .EPH controller board. . . . . . . . . . . . . . . . . . . . . . .

2,000-sheet input unit . . . . . . . . . . . . . . . . . . . . . .Multi-bin mailbox . . . . . . . . . . . . . . . . . . . . . . . . . .Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Printer timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 Removal and replacement

Chapter contents. . . . . . . . . . . . . . . . . . . . . . . . . .Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance units . . . . . . . . . . . . . . . . . . . . . . . . .Doors and covers . . . . . . . . . . . . . . . . . . . . . . . . .Top assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . .Front assemblies. . . . . . . . . . . . . . . . . . . . . . . . . .Left assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . .Right assemblies. . . . . . . . . . . . . . . . . . . . . . . . . .Rear assemblies . . . . . . . . . . . . . . . . . . . . . . . . . .2,000-sheet input unit . . . . . . . . . . . . . . . . . . . . . .Multi-bin mailbox . . . . . . . . . . . . . . . . . . . . . . . . . .



7 Troubleshooting

Chapter contents. . . . . . . . . . . . . . . . . . . . . . . . . .Pre-troubleshooting checklist . . . . . . . . . . . . . . .

Printer message troubleshooting. . . . . . . . . . . . . .Aids to troubleshooting . . . . . . . . . . . . . . . . . . . . .Paper path troubleshooting . . . . . . . . . . . . . . . . . .Image formation troubleshooting. . . . . . . . . . . . . .Image defects troubleshooting . . . . . . . . . . . . . . Color balance adjustment . . . . . . . . . . . . . . . . . . .Repetitive defects troubleshooting . . . . . . . . . . . 2,000-sheet input unit troubleshooting . . . . . . . . Multi-bin mailbox troubleshooting . . . . . . . . . . . . .Communications troubleshooting . . . . . . . . . . . . .Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 Parts and diagrams

Chapter contents. . . . . . . . . . . . . . . . . . . . . . . . . .Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Ordering parts . . . . . . . . . . . . . . . . . . . . . . . . . . . .Illustrations and parts lists. . . . . . . . . . . . . . . . . . .Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . .Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . .

Index





List of figures

Figure 1. Space requirements . . . . . . . . . . . Figure 2. Example of printer model number an

number label (110 V and 220 V) . . Figure 3. Front view . . . . . . . . . . . . . . . . . . .

Figure 4. Rear view . . . . . . . . . . . . . . . . . . . . Figure 5. Formatter assemblies . . . . . . . . . . Figure 6. Paper handling accessories and optFigure 7. Contents of printer box . . . . . . . . . Figure 8. Power cord connection . . . . . . . . . Figure 9. C-link and power cables connections

Figure 10. Network connections . . . . . . . . . . . Figure 11. Parallel cable connection . . . . . . . . Figure 12. Changing the printer control panel ovFigure 13. Location of printer control panel featFigure 14. Consumable installation order . . . . Figure 15. DIMM slot configuration . . . . . . . . . Figure 16. Paper handling accessory status LEFigure 17. Cleaning the post charger unit . . . . Figure 18. Cleaning the density sensor . . . . . Figure 19. Cleaning the transfer charger . . . . Figure 20. Removing the waste toner tray coveFigure 21. Cleaning the waste toner tray . . . . Figure 22. Location of consumables in printer

Figure 23. Contents of transfer kit . . . . . . . . . Figure 24. Contents of drum kit . . . . . . . . . . . Figure 25. Contents of fuser kit . . . . . . . . . . . . Figure 26. Cross-section view of internal compoFigure 27 Image formation



Figure 37. Transfer drum cleaning . . . . . . . . . Figure 38. Imaging drum cleaning block . . . . . Figure 39. Fusing the toner . . . . . . . . . . . . . . .

Figure 40. Waste toner level detection . . . . . . Figure 41. Color toner level detections . . . . . . Figure 42. Color toner lever detection . . . . . . Figure 43. Density sensor . . . . . . . . . . . . . . . . Figure 44. Transfer belt control . . . . . . . . . . . . Figure 45. Cleaning roller control . . . . . . . . . . Figure 46. Carousel control . . . . . . . . . . . . . . Figure 47. Power distribution circuit diagram . Figure 48. Power Save circuit diagram . . . . . . Figure 49. High-voltage power supply circuit . Figure 50. Laser/scanner . . . . . . . . . . . . . . . . Figure 51. Printer motors and heaters . . . . . . Figure 52. Carousel motor (M1) . . . . . . . . . . .

Figure 53. Drum motor (M2) . . . . . . . . . . . . . . Figure 54. Cartridge motor (M3) . . . . . . . . . . . Figure 55. Main motor (M4) . . . . . . . . . . . . . . Figure 56. Pick-up motor (M5) . . . . . . . . . . . . Figure 57. Paper path . . . . . . . . . . . . . . . . . . . Figure 58. Tray 2 and 3 pick-up . . . . . . . . . . .

Figure 59. Tray 1 pick-up . . . . . . . . . . . . . . . . Figure 60. Printer sensors . . . . . . . . . . . . . . . Figure 61. Printer switches . . . . . . . . . . . . . . . Figure 62. Printer clutches and solenoids . . . . Figure 63. Fusing and delivery unit . . . . . . . . . Figure 64. 2,000-sheet input unit sensors, switc

and motors . . . . . . . . . . . . . . . . . . . Figure 65. 2,000-sheet input unit paper path . Figure 66. Multi-bin mailbox cabling . . . . . . . . Figure 67. Multi-bin mailbox sensors . . . . . . . Figure 68. Multi-bin mailbox paper path . . . . .



Figure 75. Orientation of printer and accessorieand right . . . . . . . . . . . . . . . . . . . . .

Figure 76. Orientation of printer and accessorieand left . . . . . . . . . . . . . . . . . . . . . . .

Figure 77. Removing the front cover . . . . . . . Figure 78. Front right cover . . . . . . . . . . . . . . Figure 79. Inside left panel . . . . . . . . . . . . . . . Figure 80. Screws behind left door . . . . . . . . . Figure 81. Screws behind right door . . . . . . . .

Figure 82. Connector on top cover . . . . . . . . . Figure 83. Left door and strap . . . . . . . . . . . . Figure 84. Screws on left rear cover . . . . . . . . Figure 85. Screws on upper left door . . . . . . . Figure 86. Stopper hinges on lower left cover Figure 87. Connectors on the right upper door .

Figure 88. E-ring . . . . . . . . . . . . . . . . . . . . . . . Figure 89. Spring on right cover subassembly Figure 90. Right rear cover . . . . . . . . . . . . . . . Figure 91. Screws on the right lower cover . . Figure 92. Rear cover . . . . . . . . . . . . . . . . . . . Figure 93. Bottom of the control panel . . . . . .

Figure 94. Scanner unit . . . . . . . . . . . . . . . . . Figure 95. Upper airflow vent . . . . . . . . . . . . . Figure 96. Face-down exit sensor rail . . . . . . . Figure 97. Face-down output assembly . . . . . Figure 98. Toner lock sensor and color cartridgFigure 99. Subrelay PCA . . . . . . . . . . . . . . . . Figure 100. Formatter board . . . . . . . . . . . . . . . Figure 101. Connector on formatter board . . . . Figure 102. Back side of formatter board . . . . . Figure 103. Feeder assembly . . . . . . . . . . . . . . Figure 104. Face-up solenoid . . . . . . . . . . . . . . Fi 105 F l id



Figure 116. Rear of printer with cover removed Figure 117. Rear of printer with formatter pan remFigure 118. Formatter pan . . . . . . . . . . . . . . . .

Figure 119. Formatter pan (left side) . . . . . . . . Figure 120. Fan 1 . . . . . . . . . . . . . . . . . . . . . . . Figure 121. Fan 2 . . . . . . . . . . . . . . . . . . . . . . . Figure 122. Power supply . . . . . . . . . . . . . . . . . Figure 123. Controller board . . . . . . . . . . . . . . . Figure 124. Cartridge motor . . . . . . . . . . . . . . . Figure 125. Main motor . . . . . . . . . . . . . . . . . . . Figure 126. Carousel motor PCA . . . . . . . . . . . Figure 127. Fans 1 and 2 housing assemblies . Figure 128. Carousel motor . . . . . . . . . . . . . . . Figure 129. Lower air duct . . . . . . . . . . . . . . . . Figure 130. Screws on the delivery drive assembFigure 131. Access to main gear assembly . . .

Figure 132. High-voltage converter 1 PCA . . . . Figure 133. High-voltage converter 1 . . . . . . . . Figure 134. High-voltage converter 2 PCA . . . . Figure 135. High-voltage converter 2 . . . . . . . . Figure 136. High-voltage converter 2 . . . . . . . . Figure 137. Drum/cartridge drive assembly . . .

Figure 138. Separation discharge high-voltage cFigure 139. Plate over media size sensing PCAsFigure 140. Media size sensing PCAs . . . . . . . Figure 141. Front cover of the 2,000-sheet input Figure 142. Back cover removal . . . . . . . . . . . . Figure 143. Left cover removal . . . . . . . . . . . . .

Figure 144. Vertical transfer unit (VTU) . . . . . . Figure 145. Right cover with VTU removed . . . Figure 146. Tray 4 removal . . . . . . . . . . . . . . . . Figure 147. Paper pick-up assembly . . . . . . . . Figure 148. Controller PCA . . . . . . . . . . . . . . . .



Figure 160. Flipper assembly (1 of 3) . . . . . . . . Figure 161. Flipper assembly (2 of 3) . . . . . . . . Figure 162. Flipper assembly (3 of 3) . . . . . . . .

Figure 163. Delivery head motor . . . . . . . . . . . Figure 164. Transport belt motor . . . . . . . . . . . Figure 165. Input paper guide (1 of 2) . . . . . . . Figure 166. Input paper guide (2 of 2) . . . . . . . Figure 167. Metallic tape and housing assembly Figure 168. Metallic tape and housing assembly Figure 169. Controller PCA (1 of 2) . . . . . . . . .

Figure 170. Controller PCA (2 of 2) . . . . . . . . . Figure 171. Anti-curl strings (1 of 2) . . . . . . . . . Figure 172. Anti-curl strings (2 of 2) . . . . . . . . . Figure 173. Delivery head assembly (1 of 4) . . Figure 174. Delivery head assembly (2 of 4) . . Figure 175. Delivery head assembly (3 of 4) . .

Figure 176. Delivery head assembly (4 of 4) . . Figure 177. Interlock switch . . . . . . . . . . . . . . . Figure 178. Diagnostic LED PCA . . . . . . . . . . . Figure 179. User status LED PCA . . . . . . . . . . Figure 180. Attachment assembly . . . . . . . . . . Figure 181. Example of a configuration page . .

Figure 182. Right upper cover detection interlockFigure 183. Drum cartridge detection interlock . Figure 184. Black toner cartridge detection interlFigure 185. Toner carousel door detection interloFigure 186. Front cover/delivery cover detection Figure 187. Laser shutters . . . . . . . . . . . . . . . .

Figure 188. Left upper cover detection . . . . . . . Figure 189. Right lower cover detection . . . . . . Figure 190. Printer paper path . . . . . . . . . . . . . Figure 191. Image orientation and direction of traFigure 192. Incorrect registration (late and early



Figure 204. Repetitive defect ruler . . . . . . . . . . Figure 205. Cleaning the transfer drum . . . . . . Figure 206. Rear view of 2,000-sheet input unit

Figure 207. Location of sensors in the 2,000-sheFigure 208. Multi-bin mailbox power supply test mFigure 209. Connectors on the controller board Figure 210. General printer circuit diagram (1 of Figure 211. General printer circuit diagram (2 of Figure 212. Major assembly locations (1 of 2) . Figure 213. Major assembly locations (2 of 2) .

Figure 214. Printer covers and doors (1 of 3) . . Figure 215. Printer covers and doors (2 of 3) . . Figure 216. Printer covers and doors (3 of 3) . . Figure 217. Internal cover assembly . . . . . . . . . Figure 218. Internal components (1 of 6) . . . . . Figure 219. Internal components (2 of 6) . . . . .

Figure 220. Internal components (3 of 6) . . . . . Figure 221. Internal components (4 of 6) . . . . . Figure 222. Internal components (5 of 6) . . . . . Figure 223. Internal components (6 of 6) . . . . . Figure 224. Drum/cartridge drive assembly . . . Figure 225. Delivery drive assembly . . . . . . . . .

Figure 226. Tray 3 assembly . . . . . . . . . . . . . . Figure 227. Tray 2 assembly . . . . . . . . . . . . . . Figure 228. Paper pick-up assembly (1 of 3) . . Figure 229. Paper pick-up assembly (2 of 3) . . Figure 230. Paper pick-up assembly (3 of 3) . . Figure 231. Registration frame assembly . . . . . Figure 232. Registration roller assembly . . . . . Figure 233. Feeder assembly . . . . . . . . . . . . . . Figure 234. Tray 1 pick-up assembly . . . . . . . . Figure 235. Tray 1 assembly . . . . . . . . . . . . . . Figure 236. Delivery assembly . . . . . . . . . . . . .



List of tables

Table 1. Features and optional accessories by Table 2. Printer performance . . . . . . . . . . . . . Table 3. Electrical specifications. . . . . . . . . . . Table 4. Operating environment specifications

Table 5. Acoustic emissions . . . . . . . . . . . . . . Table 6. Printer dimensions . . . . . . . . . . . . . . Table 7. Consumable storage specifications . Table 8. Media capacity and sizes for input trayTable 9. Media capacity and sizes for the multiTable 10. Ordering information . . . . . . . . . . . . .

Table 11. Technical support websites. . . . . . . . Table 12. Printer control panel menu map overvTable 13. Information Menu . . . . . . . . . . . . . . . Table 14. Proof and Print Menu . . . . . . . . . . . . Table 15. Paper Handling Menu . . . . . . . . . . . . Table 16. Configuration Menu. . . . . . . . . . . . . . Table 17. Printing Menu . . . . . . . . . . . . . . . . . .

Table 18. I/O Menu . . . . . . . . . . . . . . . . . . . . . . Table 19. Resets Menu . . . . . . . . . . . . . . . . . . . Table 20. Color Adjust Menu. . . . . . . . . . . . . . . Table 21. Service Mode Menu . . . . . . . . . . . . . Table 22. Paper handling accessory status LEDTable 23. Replacement frequencies for printer c

Table 24. Subtractive color absorption . . . . . . . Table 25. Subtractive color mixing . . . . . . . . . . Table 26. Additive color mixing . . . . . . . . . . . . . Table 27. Fusing temperatures . . . . . . . . . . . . . Table 28 Printer motor and heater names and d



Table 38. Multi-bin mailbox sensors, switches, mcontroller board PCA. . . . . . . . . . . . .

Table 39. Numbered printer messages. . . . . . . Table 40. Unnumbered printer messages. . . . . Table 41. Sensor monitor test . . . . . . . . . . . . . . Table 42. Media jam detection . . . . . . . . . . . . . Table 43. Streaking. . . . . . . . . . . . . . . . . . . . . . Table 44. Neutral axis adjustments. . . . . . . . . . Table 45. Status LED on the 2,000-sheet input uTable 46. Patterns of LED flashing (2-second pa

each pattern) . . . . . . . . . . . . . . . . . . . .Table 47. DIP switch settings for troubleshooting

procedures . . . . . . . . . . . . . . . . . . . . .Table 48. Status LEDs on the multi-bin mailboxTable 49. Options, accessories, and consumableTable 50. Miscellaneous parts . . . . . . . . . . . . .

Table 51. Printer doors and covers (1 of 3). . . . Table 52. Printer doors and covers (2 of 3). . . . Table 53. Printer covers and doors parts . . . . . Table 54. Internal cover assembly parts . . . . . . Table 55. Internal components parts (1 of 6) . . Table 56. Internal components parts (2 of 6) . . Table 57. Internal components parts (3 of 6) . . Table 58. Internal components parts (4 of 6) . . Table 59. Internal components parts (5 of 6) . . Table 60. Internal components parts (6 of 6) . . Table 61. Drum/cartridge drive assembly parts Table 62. Delivery drive assembly parts . . . . . . Table 63. Tray 3 assembly parts. . . . . . . . . . . .

Table 64. Tray 2 assembly . . . . . . . . . . . . . . . . Table 65. Paper pick-up assembly parts. . . . . . Table 66. Registration frame assembly parts . . Table 67. Registration roller assembly parts . . . T bl 68 F d bl t



Table 79. Multi-bin mailbox component parts (2 Table 80. Multi-bin mailbox component parts (3 Table 81. Numerical parts list . . . . . . . . . . . . . . Table 82. Alphabetical parts list . . . . . . . . . . . .





1Product informat

Chapter contents

Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical specifications . . . . . . . . . . . . . . . .

Operating environment specifications . . . . .

Acoustic emission specifications . . . . . . . .

Printer dimensions. . . . . . . . . . . . . . . . . . . .

Consumable storage specifications. . . . . .

Site requirements . . . . . . . . . . . . . . . . . . . . . . . .

General guidelines. . . . . . . . . . . . . . . . . . .

Space requirements . . . . . . . . . . . . . . . . . .

Media requirements. . . . . . . . . . . . . . . . . . . . . . . .

Selecting media . . . . . . . . . . . . . . . . . . . . .

Storing media . . . . . . . . . . . . . . . . . . . . . .

Media capacity and sizes for input trays . .

Media capacity and sizes for the multi-bin m

Media weights and sizes for duplexer



Identification (model and serial numbers) . . . . . .

Product overview. . . . . . . . . . . . . . . . . . . . . . . . . .

External views . . . . . . . . . . . . . . . . . . . . . . .

Formatter assemblies . . . . . . . . . . . . . . . . Paper handling accessories and options. .

Safety information . . . . . . . . . . . . . . . . . . . . . . . .

FCC regulations. . . . . . . . . . . . . . . . . . . . . .

Canadian DOC regulations . . . . . . . . . . . . .

Declarations of conformity . . . . . . . . . . . . . VCCI statement (Japan) . . . . . . . . . . . . . .

EMI statement (Korea). . . . . . . . . . . . . . . .

Laser safety statement . . . . . . . . . . . . . . .

Laser statement for Finland . . . . . . . . . . . .

Product information sheet . . . . . . . . . . . . . .Toner safety . . . . . . . . . . . . . . . . . . . . . . . . .

Material Safety Data Sheet . . . . . . . . . . . .

Ozone safety . . . . . . . . . . . . . . . . . . . . . . . .



Printer features

Table 1. Features and optional accessories by printer model

8500 8500 N

Features

Standard DIMM memory 32 MB 32 MB

Expandable to 512 MB of DIMM1

memory X XInternal printer hard disk

2,000-sheet input unit

Duplexer

HP JetDirect 600N internal

print server XOptional accessories

External (EIO-compatible) printerhard disk

X X

ROM, or synchronous DRAM DIMMs X X

Duplexer X X

HP JetDirect 600N internalprint server X

Multi-bin mailbox

1 To expand the DIMM memory to 512 MB, install 64-MB DIMMs in all eight DIMM



The approximate print speeds offered by this print

those listed above because the following factors atime:

q complexity and size of graphics

q I/O configuration

Table 2. Printer performance

Print speeds q 24 pages per minute (ppm) black and

q 6 ppm color

Text and graphicsresolution q 600 dpi resolution

Approximate printspeeds

Letter, A4-size q 24 ppm b/w; 6 ppm color

Legal, Executive,11-by-17 inch size q 12 ppm b/w; 3 ppm color

Heavy paper q 3.2 ppm b/w; 2.2 ppm color

Transparencies q 2.6 ppm b/w; 2.0 ppm color

Fontsq

HP LaserJet 45 TrueType™

font setq PostScript ® fonts

Printer personalitysupport

q Automatic personality switching

q PCL1 and PostScript support

User interface and EIO q Standard ECP or bidirectional paralle(IEEE-1284 compliant)

q 2 enhanced input/output (EIO) slotsq Automatic I/O switching

1 Not available at initial product introduction.



Specifications

Electrical specifications

Operating environment specifica

Table 3. Electrical specifications

Item 110-volt models 2

Power requirements 100 to 127 V (+/- 10%)

50/60 Hz (+/- 2 Hz)

220

5Power consumption (typical)During printing (black and

white)During printing (color)During standbyDuring Power Save mode

During Off mode

750 W (average)

375 W (average)190 W (average)

< 45 W

< 2 WMinimum recommended circuitcapacity for typical product

12.0 A at 120 V

Table 4. Operating environment specifications

Item Operating

Temperature

RecommendedAllowed

20 to 26° C (68 to 79° F)15 to 30° C (59 to 86° F)

0 to 3-20 to 6

HumidityRecommended 20 to 50% RH 3



Acoustic emission specifications

Printer dimensions

Table 5. Acoustic emissions

Operation position (per ISO 9296, DIN 45635, T.19)

Printing LpA 54 dB(A)

Standby LpA 49 dB(A)

Bystander 1 meter (per ISO 7779, DIN 45635, T.19)

Printing LpA 50 dB(A)

Standby LpA 45 dB(A)

Sound power (per ISO 9296)

Printing 6.7 B (A)

Standby 6.1 B (A)

Table 6. Printer dimensions

Printer Printer with stand

Psh

m

Height

750 mm30 in

1111 mm44 in

Width

566 mm22 in

566 mm22 in

Depth

625 mm25 in

625 mm25 in

Weight (with 87 kg 100 kg



Consumable storage specificatio

The life of consumables is greatly affected by theienvironment. Use the following table to determine

consumables.For consumable replacement specifications, see p

Table 7. Consumable storage specifications

Temperature

Normal (maximum of 2.5 years) 0 to 35° C (3

Severe (maximum of 18 days) High 35 to 4Low 0 to -20

Maximum

temperature

change rate

40 to 15° C (104 to 59° F) within 3 minutes-20 to 25° C (-4 to 77° F) within 3 minutes

Humidity

Normal (maximum of 2.5 years) 35 to 85% R

Severe (maximum of 18 days) High 85 to 9Low 10 to 3

Atmospheric

pressure460 to 760 mm Hg



Site requirements

General guidelinesLocating and placing the printer correctly are impothe performance level that has been set at the facbe sure to adhere to the environmental specificatichapter. The following are recommendations for lothe printer:

q Install in a well-ventilated, dust-free area.q Install on a hard, level surface.

q Install where the temperature and humidity doabruptly. Do not install near water sources, huconditioners, refrigerators, or other major app

q Do not expose the printer to direct sunlight, du

ammonia fumes.q Install the printer away from walls or other obje

enough space around the printer for proper aventilation (see figure 1 on page 25).

q Install the printer away from the direct flow of ventilation systems.



Space requirements

Figure 1. Space requirements

1 Top view (with optional multi-bin mailbox and

unit)2 Front view (with optional multi-bin mailbox and

unit)

1

2





Storing media

Follow these guidelines when stacking and storing

q Store paper in its ream wrapper until you are

q Rewrap partially used packages of media bef

q Stack each carton upright and squarely on top

q Store envelopes in a protective box to avoid denvelope edges.

q Keep stored media away from temperature an

extremes.q Do not store cartons or reams directly on the f

absorb humidity. Instead, place cartons on a p

q Do not store individual reams in any manner tcurl or warp along the edges.

q Do not stack more than six cartons on top of e

q Do not place anything on top of media, regardmedia is packaged or unpackaged.

q Do not store printed documents in vinyl folderdocuments to petroleum-based solvents.



Media capacity and sizes for inpu

The following table lists the types and sizes of meeach input tray. For best results, use HP LaserJet

conventional white copier paper. The media shouland free of cuts, nicks, tears, spots, loose particlevoids, perforations, and curled or bent edges. For media specifications, see the HP LaserJet PrinterSpecification Guide .

Table 8. Media capacity and sizes for input trays

Media type

Media size and

orientation Media weight

Tray 1

PaperPlain

PreprintedLetterheadPrepunchedBondRecycledColorCard stockHeavy (more

than 28 lb,105 g/m2)Glossy

11 by 17 in (portrait)JIS B4 (portrait)

A3 (portrait)A4 (portrait)A5 (portrait)Custom min. (99 by190 mm, 3.90 by 7.49 in)(portrait)

Custom max. (304 by469 mm, 11.98 by 18.48

in) (portrait)Executive (portrait)ISO B5 (portrait)JIS B4 (portrait)JIS B5 (portrait)Letter (landscape)Legal (landscape)

16 to 58 lb(60 to 216 g/m2) bond

12

Lth

Envelopes B5 (portrait)C5 (portrait)Commercial #10 (Com10)

(portrait)DL (portrait)Double Post Card

(JPOSTD)

Maximum 24 lb (90 g/m2)bond

A

Lth



Tray 2

PaperPlainPreprintedLetterheadPrepunchedBondRecycled

ColorGlossy

A4 (landscape)JIS B4 (portrait)Letter (landscape)Legal (portrait)

16 to 28 lb(60 to 105 g/m2) bond

52

Lth

Transparency A4 (portrait)Letter (portrait)

4 to 5 mils (0.10 to 0.13mm) thick*

Lth

Tray 3

Paper

PlainPreprintedLetterheadPrepunchedBondRecycledColorGlossy

11 by 17 in (portrait)

A3 (portrait)A4 (landscape)JIS B4 (portrait)Legal (portrait)Letter (landscape)

16 to 28 lb

(60 to 105 g/m2

) bond

5

2

Lth

Transparency A4 (portrait)Letter (portrait)


Lth

2,000-sheet input unit (only available on 8500 DN model)

PaperPlainPreprintedLetterheadPrepunchedBondRecycledColorGlossy

11 by 17 in (portrait)A4 (landscape)JIS B4 (portrait)Legal (portrait)Letter (landscape)

16 to 28 lb(60 to 105 g/m2) bond

22

Lth

Table 8. Media capacity and sizes for input trays (continued)

Media type

Media size and

orientation Media weight

M di i d i f h



Media capacity and sizes for the

mailbox

The following table lists the types and sizes of memulti-bin mailbox output bins.

Table 9. Media capacity and sizes for the multi-bin mailbox

Media type Media size Media weight

Mailboxes

PaperPlainPreprintedLetterheadPrepunchedBondRecycledColor

11 by 17 in3A4JIS B4LegalLetter

16 to 28 lb (60 to105 g/m2) bond 2(7

Left (face-up) output bin

PaperPlainPreprintedLetterheadPrepunchedBond

RecycledColorCard StockHeavy (more

than 28 lb,105 g/m2)

Glossy

11 by 17 inA3A4A5Custom min. (99 by 190

mm, 3.90 by 7.49 in)

Custom max. (304 by 469mm, 11.98 by 18.48 in)ExecutiveJIS B4JIS B5LegalLetter

16 to 58 lb (60 to216 g/m2) bond

1(7

Labels A4

Letter

— —

Transparency A4Letter


—

Envelopes B5C5

Maximum 24 lb (90 g/m2)b d

3

M di i ht d i f d l



Media weights and sizes for dupl

The duplexer accepts media up to 28 lb (105 g/m2

as A3 size.

Envelopes

q The Envelope media type setting in the printeoptimized for the best print adhesion for most

q The Heavy Paper mode might also work well

envelopes, especially if the printing environmeq Output envelopes to the left (face-up) output b

CAUTION To prevent severe printer damage, envelopes withstrip or with more than one flap must use adhesivthe printer’s fusing temperatures (approximately 19Extra flaps or strips can result in wrinkling or creas jamming.

Transparencies

q The printer’s internal color settings are optimicolor quality if Transparency is selected as th

printer driver. Using other media type settingsaccurate colors.

CAUTION Use only transparencies supported for use in this transparencies that do not meet the specificationscause poor print quality, media jams, and printer dunder warranty.

q Although this printer supports transparencies mils (0.10 to 0.13 mm) thick, HP recommendstransparencies that are 5 mil (0.13 mm) thick.

Gl di



Glossy media

If you want the effect of glossy media, use only Hmedia in this printer. For ordering information, see

Heavy paper stock

Heavy paper stock is any paper heavier than 28 lb216 g/m2) bond. Always print heavy paper stock fprinter driver, select Heavy Paper or Cardstock athe paper tab to ensure the correct finish on the mleft (face-up) output bin to prevent media jams. Foon changing the printer driver settings, see the on

Do not use extremely heavy paper stock (greater 216 g/m2 bond). Misfeeds, mis-stacking, media jafusing, poor print quality, and excessive mechanic

Colored media

Colored media should be of the same high qualityxerographic paper. Pigments used must be able toprinter’s fusing temperature (approximately 190° Cuse media with a colored coating that was added

produced.The printer cannot detect the color of media you athe shade or color of the media can change the shcolors.

Media to avoid



Media to avoid

To avoid poor print quality or damage to the printethe following:

q media that is coated or embossed

q media with cutouts or perforations (except pre

q multi-part forms

q media with irregularities, such as tabs or stap

q preprinted media that contains thermography

vaporize, or release hazardous emissions whfusing temperature (approximately 190° C or 3

q media that produces hazardous emissions, mdiscolors when heated to the printer’s fusing t(approximately 190° C or 374° F)

q media that has already been through a photoc

printer, even if there is no printing on the pageq media with a watermark if solid fill areas are t

q transparencies designed for ink jet printers

Identification (model and serial numbe



Identification (model and serial numbe

To identify the model number and serial number, f

located on the rear of the printer similar to the one

Figure 2. Example of printer model number and serial n(110 V and 220 V)

Product overview



Product overview

External views

Figure 3. Front view

1 Printer control panel (seepage 66)

2 Left (face up) output bin

7 Top (face-

8 Flip-up me

1

2

3

4

5

6



Figure 4. Rear view

1 Air filter door

2 Formatter board

3 Left upper cover

4 Left lower cover5 Power connector

2

1

Formatter assemblies



Formatter assemblies

Figure 5. Formatter assemblies

1 Formatter board

2 DIMM slots

3 Printer hard disk location (factory installed)

4 EIO slot 2 (shown with HP JetDirect internal p

5 Parallel IEEE-1284 interface port (C-size)

6 EIO slot 1

7 C-link connector

Note Either EIO slot can have a hard disk installed if th

32

1

Paper handling accessories and



Paper handling accessories and

Figure 6. Paper handling accessories and options

1 Multi-bin mailbox

2 Duplexer (internal)3 2,000-sheet input unit (only available on 8500

1

2

3

Safety information



Safety information

FCC regulations

This equipment has been tested and found to comfor a Class B digital device, pursuant to Part 15 ofThese limits are designed to provide reasonable pharmful interference in a residential installation. Tgenerates, uses, and can radiate radio frequency installed and used in accordance with the instruct

harmful interference to radio communications. Hoguarantee that interference will not occur in a partthis equipment does cause harmful interference toreception, which can be determined by turning theon, the user is encouraged to try to correct the intmore of the following measures:

q Reorient or relocate the receiving antenna.q Increase separation between equipment and

q Connect equipment to an outlet on a circuit diwhich the receiver is located.

q Consult your dealer or an experienced radio/t

Note Any changes or modifications to the printer not expHP could void the user’s authority to operate this

Use of a shielded interface cable is required to comB limits in Part 15 of FCC rules.

Canadian DOC regulationsComplies with Canadian EMC Class B requireme

«Conforme á la classe B des normes canadienne

Declarations of conformity



yDECLARATION OF CONFORMITY

according to ISO/IEC Guide 22 and EN 45014

Manufacturer’s Name:

Manufacturer’s Address:

Hewlett-Packard Company

11311 Chinden BoulevardBoise, Idaho 83714-1021, U

declares, that the product

Product Name:

Model Number:

Product Options:

HP Color LaserJet 8500, 85C3983A, C3984A, C3985AALL

conforms to the following Product Specifications:

Safety: IEC 950:1991+A1+A2+A3+A4 / EN 60950:1992+A1+A2+A3+A4IEC 825-1:1993 / EN 60825-1:1994 Class 1 (Laser/LED)

EMC: CISPR 22:1993+A1 / EN 55022:1994 Class B1

CISPR 22:1993+A1 / EN 55022:1994 Class A*EN 5081-1:1992EN 50082-1:1992IEC 801-2:1991 / prEN 55024-2:1992 -4 kV CD, 8 kV AD

IEC 801-3:1984 / prEN 55024-3:1991 -3 V/mIEC 801-4:1988 / prEN 55024-4:1992 -0.5 kV Signal Lines

1.0 kV Power LinesFCC Title 47 CFR, Part 15 Class B2 /ICES-003, Issue 2/VCCI-21

AS / NZS 3548:1992 / CISPR 22:1993 Class1

Supplementary Information:

The product herewith complies with the requirements of the following Directives anmarking accordingly:- the EMC directive 89/336/EEC- the Low Voltage Directive 73/23/EEC

1 The product was tested in a typical configuration with Hewlett-Packard Personal 2 This Device complies with Part 15 of the FCC rules. Operation is subject to the f(1) this device may not cause harmful interference, and (2) this device must accepreceived, including interference that may cause undesired operation.

* This printer contains Local Area Network (LAN) options. When the interface cablthe IEEE 802.3 connectors, the printer meets the requirements of EN55022 Class

February 12, 1997

DECLARATION OF CONFORMITY






Hewlett-Packard CompanyMontemorelos 299

Guadalajara Jalisco, 45060México


Product Name:

Model Number:

Product Options:

DuplexerC4782AN/A



CISPR 22:1993+A1 / EN 55022:1994EN 50081-1:1992EN 50082-1:1992IEC 801-2:1991 / prEN 55024-2:1992 -4 kV CD, 8 kV ADIEC 801-3:1984 / prEN 55024-3:1991 -3 V/mIEC 801-4:1988 / prEN 55024-4:1992 -0.5 kV Signal Lines

1.0 kV PFCC Title 47 CFR, Part 15 Class B2 /ICES-003, Issue 2/VCCI-21

AS / NZS 3548:1992 / CISPR 22:1993 Class B1


The product herewith complies with the requirements of the following Directives anmarking accordingly:- the EMC directive 89/336/EEC- the Low Voltage Directive 73/23/EEC

1 The product was tested in a typical configuration with Hewlett-Packard Personal 2 This Device complies with Part 15 of the FCC rules. Operation is subject to the fo(1) this device may not cause harmful interference, and (2) this device must accepreceived, including interference that may cause undesired operation.

July 16, 1997

For Compliance Information ONLY, contact:

Australia Contact: Product Regulations Manager, Hewlett-Packard AustralStreet, Blackburn, Victoria 3130, Australia

Europe Contact: A Local Hewlett-Packard Sales and Service Office or HDepartment HQ-TRE / Standards Europe, HerrenbergeBöblingen (Fax: +49-7031-14-3143)

DECLARATION OF CONFORMITY

di t ISO/IEC G id 22 d EN 45014






Hewlett-Packard CompanyMontemorelos 299

Guadalajara Jalisco, 45060México


Product Name:

Model Number:

Product Options:

2,000-Sheet Input TrayC4781AN/A


Safety: IEC 950:1991+A1+A2+A3+A4 / EN 60950:1992+A1+A2+A3+A4IEC 825-1:1993 / EN 60825-1:1994 Class 1 (Laser/LED)


CISPR 22:1993+A1 / EN 55022:1994EN 50081-1:1992EN 50082-1:1992IEC 801-2:1991 / prEN 55024-2:1992 -4 kV CD, 8 kV ADIEC 801-3:1984 / prEN 55024-3:1991 -3 V/mIEC 801-4:1988 / prEN 55024-4:1992 -0.5 kV Signal Lines

1.0 kV Power LinesFCC Title 47 CFR, Part 15 Class B2 /ICES-003, Issue 2/VCCI-21

AS / NZS 3548:1992 / CISPR 22:1993 Class B1


The product herewith complies with the requirements of the following Directives anmarking accordingly:

- the EMC directive 89/336/EEC- the Low Voltage Directive 73/23/EEC

1 The product was tested in a typical configuration with Hewlett-Packard Personal 2 This Device complies with Part 15 of the FCC rules. Operation is subject to the f(1) this device may not cause harmful interference, and (2) this device must accepreceived, including interference that may cause undesired operation.

July 16, 1997For Compliance Information ONLY, contact:

Australia Contact: Product Regulations Manager, Hewlett-Packard AustraliaStreet Blackburn Victoria 3130 Australia

VCCI statement (Japan)



EMI statement (Korea)

Laser safety statement

The Center for Devices and Radiological Health (CFood and Drug Administration has implemented rproducts manufactured since August 1, 1976. Commandatory for products marketed in the United Stcertified as a “Class 1” laser product under the U.Health and Human Services (DHHS) Radiation PStandard according to the Radiation Control for He

of 1968. Since radiation emitted inside this printerconfined within protective housings and external cbeam cannot escape during any phase of normal

Laser statement for Finland



Luokan 1 laserlaite

Klass 1 Laser Apparat

HP LaserJet 8500, 8500 N, 8500 DN laserkirjoitin on käyttäjänluokan 1 laserlaite. Normaalissa käytössä kirjoittimen suojakotpääsyn laitteen ulkopuolelle. Laitteen turvallisuusluokka on mä60825-1 (1994) mukaisesti.

Varoitus!Laitteen käyttäminen muulla kuin käyttöohjeessa mainitulla tavkäyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle laser

Varning!

Om apparaten används på annat sätt än i bruksanvisning spe

användaren utsättas för osynlig laserstrålning, som överskride1.

HUOLTOHP LaserJet 8500, 8500 N, 8500 DN -kirjoittimen sisällä ei oleolevia kohteita. Laitteen saa avata ja huoltaa ainoastaan sen hhenkilö. Tällaiseksi huoltotoimenpiteeksi ei katsota väriainekapaperiradan puhdistusta tai muita käyttäjän käsikirjassa luetelttarkoitettuja ylläpitotoimia, jotka voidaan suorittaa ilman erikoi

Varo!

Mikäli kirjoittimen suojakotelo avataan, olet alttiina näkymättömlaitteen ollessa toiminnassa. Älä katso säteeseen.

Varning!

Om laserprinterns skyddshölje öppnas då apparaten är i funktför osynlig laserstrålning. Betrakta ej strålen.

Product information sheet



The Toner Product Information Sheet can be obtaHP FIRST (Fax Information Retrieval Support Tec

(800) 231-9300. International customers should sappropriate phone numbers and information.

Toner safety

Toner is composed of plastic and a small amount breathing toner particles; toner might be harmful to

can also stain clothing. Skin and clothing are bestremoving as much toner as possible with a dry tiswith cold water. Hot water causes toner to melt aninto clothing.

Material Safety Data Sheet

The Toner Cartridge/Drum MSDS can be obtainedHP FIRST (Fax Information Retrieval Support Tec(800) 231-9300. Use Index number 7 for a listing Cartridge/Drum Material/Chemical Safety Data Shcustomers should see page 52 for appropriate phinformation.

Ozone safety



Ozone emission

The corona assemblies found in laser printers andgenerate ozone gas (O3) as a by-product of the eprocess. Ozone is generated only while the printethe coronas are energized).

This HP LaserJet printer contains an charcoal filteair quality. See page 105 for suggested replaceme

Ozone standards

Standards for exposure to ozone have been estabDepartment of Labor - Occupational Safety and He(DOL-OSHA) and the American Conference of GoIndustrial Hygienists (ACGIH). These standards a

million as a time-weighted average and a ceiling lHP LaserJet family printers meet these standardsthe factory.

Recommendations for minimizing ozon

Some people are extremely sensitive to ozone. In

advisable to position the printer away from the semore frequent filter replacement might be necess

Almost all ozone concerns arise from abnormal siconditions. The following conditions might generacomplaint:

q installation of multiple laser printers in a confi

q extremely low relative humidity

q poor room ventilation

q the exhaust port of the printer is directed towa

2



2Service approac

Chapter contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts and supplies. . . . . . . . . . . . . . . . . . . . . . . . .

Ordering information . . . . . . . . . . . . . . . . . .Obtaining related documentation and softw

List server . . . . . . . . . . . . . . . . . . . . . . . . . .

Ordering consumables. . . . . . . . . . . . . . . .

Ordering field replaceable units . . . . . . . . .

Parts exchange program . . . . . . . . . . . . . . Technical assistance . . . . . . . . . . . . . . . . . . . . . . .

HP ASAP . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dealer Response Line . . . . . . . . . . . . . . . .

HP Software Distribution Center . . . . . . . .

HP Direct . . . . . . . . . . . . . . . . . . . . . . . . . . .Customer Support Sales Center . . . . . . . . .

Parts identification . . . . . . . . . . . . . . . . . . .

Customer Information Centers



Introduction



Repair normally begins with using the printer inte

conjunction with the troubleshooting procedures infaulty part is located, repair is generally accomplislevel replacement of the field replaceable units. Soassemblies can be repaired at the subassembly lecomponent replacement is not supported by Hew

Parts and supplies

Field replaceable and accessory part numbers areof this manual. Use only accessories specifically dprinter. Accessories can be ordered from an authosupport provider. For a list of available accessorie

numbers, see page 445. Replacement parts can bHP’s Service Materials Organization (SMO) or SuEurope (SME).

Ordering information

The following table lists information for ordering froHP Distribution Center (HPD).

Table 10. Ordering information

Organization Address Phone

SMO (Service MaterialsOrganization) Hewlett-Packard CompanySupport Materials Organization8050 Foothills Blvd.Roseville, CA 95678

(1) (80(U.S. o

SME (Support Materials Hewlett-Packard Company (49 703

Obtaining related documentation

software



software

To order related documentation and software, con

at the numbers listed on the previous page. Part ndocumentation are listed beginning on page 448.

For information through the World Wide Web, visiwebsites:

List server

A list server is a mail program that allows users tounsubscribe to certain mail lists by sending e-mailsubscribed, a user receives all messages sent to following list server will allow HP LaserJet technicmake the support community aware of new or urgpushing the information out to those who subscrib

To subscribe to the HP LaserJet hardware externe-mail to: [email protected] with th(no quotes), the list name (lj-hardware-external), athe text of the message

Table 11. Technical support websites

HP Customer Care Online

Software drivers, supportdocumentation, and answers tofrequently asked questions.

http://www.hp.com

HP Technical Training

(North America)

Classes and schedules

http://www.hp.com

Parts

Parts informationhttp://outfield.extewelcom.htm

Ordering consumables

C bl t d i il bl



Consumable parts and accessories are available Hewlett-Packard at the following numbers:

q U.S.: (1) (800) 538-8787q Canada: (1) (800) 387-3154

(in Toronto: (416) 671-8383)

q United Kingdom: 0734-441212

q Contact your local HP Parts Coordinator for onumbers.

To find a dealer near you (or if the local dealer is tstock), call the HP Customer Information Center a0900.

Ordering field replaceable units

This printer is designed to be repaired by replacinunits. Part numbers are located in chapter 8 of thibe ordered from SMO or SME (see page 49).

Parts exchange program

HP offers remanufactured assemblies for some seare identified in chapter 8 and can be ordered thro(see page 49).

Technical assistance



HP ASAP

HP ASAP (Automated Support Access Program) technical support information 24 hours a day, 7 daASAP system includes HP FIRST, explained beloservice at (1) (800) 333-1917 (U.S.) requires a tou

HP FIRST

HP FIRST (Fax Information Retrieval Support Tecphone-in fax service providing technical informatioend-users as well as service personnel. Receivingtype 3 facsimile machine or fax card. Service-relaincludes:

q

service notes (HP Authorized Dealers)q Product Data Sheets

q Material Safety Data Sheets (MSDSs)

q typeface and accessory information

q printer support software information

q toner information

q driver request form and Software Matrix

HP FIRST, U.S.

Call the HP ASAP system at (1) (800) 333-1917 aprompts to enter HP FIRST.

HP FIRST, Europe

Call HP FIRST at one of the following numbers:

Dealer Response Line

For further technical assistance on pre/post sales



For further technical assistance on pre/post salessupport, HP dealer service-authorized personnel Dealer Response Line.

(1) (800) 544-9976 U.S. only(1) (800) 363-6584 Canada

HP Software Distribution Center

For printer drivers and application note orders:(805) 257-5565

HP Direct

For supplies and accessories orders:

(1) (800) 538-8787 U.S. only

Customer Support Sales Center

For existing hardware and software service agree

(1) (800) 386-1115 U.S. only

For quotes on or purchase of new hardware or so

(1) (800) 743-8305 U.S. only

Parts identification

For service part number identification:(1) (916) 783-0804

C t I f ti C t

HP Customer Care Centers (CCC

HP representatives are available to answer techn



HP representatives are available to answer techncharge for a period equivalent to the original HP hperiod.

Questions regarding operating systems such as Mor network configuration operating systems cannothe Customer Care Center, and should be referre

Note Each time you call the HP Customer Care Center

to provide the printer serial number and the origin

U.S. Customer Care Center (CCC)

The CCC can be reached at (208) 323-2551 and weekdays from 6:00 am to 6:00 pm Mountain Sta

European Customer Care Center (ECC

The ECCC can be reached at 31-0-20-605-0505 aweekdays from 8:30 am until 6:00 pm Central EurMultilingual customer support representatives are questions.

Canadian Customer Care Center (CCC

The CCCC at (905) 206-4663 is available weekdauntil 8:00 pm Eastern Standard Time. French- andcustomer support representatives are available to

Warranty



The warranty outlines specific legal rights. There

rights which vary from area to area. Refer to the ufurther warranty information.

Installation

Installation by service personnel is optional with thLaserJet 8500 and 8500 N models, and is includemodel. Installation can be arranged through the s

Toner cartridge information

The toner cartridge is designed to simplify replace“consumable” parts. The toner cartridge contains

mechanism and a supply of toner.

Note For best results, always use a toner cartridge beforstamped on the toner cartridge box.

Refilled toner cartridges

While HP does not prohibit the use of refilled tonethe warranty period or while the printer is under a contract, it is not recommended for the following r

q Repairs resulting from the use of refilled tonecovered under HP warranty or maintenance c

q HP has no control or process to ensure that acartridge functions at the high level of reliabiliHP LaserJet toner cartridge. HP also cannot long-term reliability effect on the printer is fromtoner formulations found in refilled cartridges



3



3Operational over

Chapter contents

Verifying package contents . . . . . . . . . . . . . . . . .

Verifying the cables are installed. . . . . . . . . . . . .

Printer with stand. . . . . . . . . . . . . . . . . . . . .Printer with a 2,000-sheet input unit . . . . .

Connecting the printer to the network . . . . . . . . .

Connecting to a 10Base-T or 100Base-TX n

Connecting to a 10Base2 network. . . . . . .

Connecting to a LocalTalk network . . . . . . Connecting a parallel cable . . . . . . . . . . . .

Changing the printer control panel overlay . . . . .

Printer control panel layout . . . . . . . . . . . . . . . . . .

Menu maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Information Menu. . . . . . . . . . . . . . . . . . . . Proof and Print Menu. . . . . . . . . . . . . . . . .

Paper Handling Menu . . . . . . . . . . . . . . . . .

Configuration Menu

Selecting the display language . . . . . . . . . . . . . . .

Installing the consumables . . . . . . . . . . . . . . . . .

C fi i i



Configuring input trays . . . . . . . . . . . . . . . . . . . . .

Selecting the mode for tray 1 . . . . . . . . . . .

Configuring media type and size . . . . . . . .

Verifying the printer is installed correctly . . . . . . .

Verifying DIMM installation . . . . . . . . . . . . . . . . .

Paper handling accessory status LEDs. . . . . . . .

Verifying package contents



Verify the following items were included from the f

Figure 7. Contents of printer box

1 Four toner cartridges: black, cyan, magenta, a

2 Power cord

3 Software on CD-ROM

4 Manuals: getting started guide and quick refe

1

2

3

4

5

6

Verifying the cables are installed



Verify that the cables are connected to the printer

Printer with stand

Figure 8. Power cord connection

WARNING! An unstable printer can tip over and cause injury; vis secured properly and the printer wheels are loc

� The power cord plugs into the connector on thethe printer and into a surge protector or other gsource.

Printer with a 2,000-sheet input u



Figure 9. C-link and power cables connections

� The interface cable attaches to the printer aboconnector and to the connector on the 2,000-s

� The power pack attaches to the back of the pri

� The shorter of the two cables from the power p

connector on the back left corner of the printer� The longer of the two cables from the power p

connector on the back left corner of the 2,000-

� The power cord plugs into the bottom of the posurge protector or other grounded power sourc

Power pack

Power cords

Int

Connecting the printer to the network



If the printer was shipped with an optional HP Jet

server, one of two types is installed:z HP JetDirect Ethernet print server supports u

network interface cables—RJ-45 (unshielded 10Base-T networks, BNC (coaxial) for 10BaseDIN-8 for LocalTalk networks. This print serveEthernet connection at a time—RJ-45 or BNC

z

HP JetDirect 10/100TX print server supports twisted pair) for 10Base-T or 100Base-TX net

A

Connecting to a 10Base-T or 100

network



� The connector of the unshielded twisted pair n

into the RJ-45 port.

Connecting to a 10Base2 networ

� Attach one section of the ThinLAN (coaxial) caconnector.

� Attach another ThinLAN cable section, or (if it network) a 50-ohm terminator on the other sidconnector.

� Plug the BNC “T” connector into the BNC port

Connecting to a LocalTalk netwo

� Plug the end of the DIN-8 cable into the LocalT

Note The printer can be connected to a LocalTalk netwoEthernet or 10Base2 network.

If you use only the LocalTalk port, EIO 1 INITIALIZtime you turn the printer on if you have an HP Jetserver installed in EIO port 1. The message shounormal printing through LocalTalk. If it does not clapproximately five minutes, there is a problem witthe network. To prevent the message from appearoperation, connect a BNC “T” connector with two 5to the BNC port.

Connecting a parallel cable



Figure 11. Parallel cable connection

� To print through the parallel port, the printer remale/micro 36-pin male (“C-size”) parallel cablcompliant. The cable is included with the base only. It must be purchased separately for other

Changing the printer control panel ove

Replace the printer control panel overlay with the



Replace the printer control panel overlay with the

your language, if applicable. Then configure the pto show printer messages in your language (see p

Figure 12. Changing the printer control panel overlay

1 Insert a thin, rigid object under the two edges the printer control panel and pull up evenly on

overlay until it comes off.

2 Place the new overlay over the printer controlinto place.

Printer control panel layout



Figure 13. Location of printer control panel features

GoMenu

LCD display – Value

C

Item

Ready

Data

Attention

Selec

Go Brings the printer online or offline, exits menus, antray messages to print on the default media size a

Menu Accesses the printer control panel menus to set thThis key permits both forward and backward movelist of available menus.

LCD display Presents data about the printer (such as printer st

actions, or data and print errors) in one or two line

– Value + Steps through the value choices for a particular mThis key permits both forward and backward m

ReadyIndicator (green)

z On—The printer is online and able to accept a

z Off—The printer is offline and unable to accep

Fl hi Th i t i i f li t



(g )z Flashing—The printer is going from online to

offline to online.

Data Indicator(green)

z On—Data is in the printer buffer, or the printedata.

z Off—The printer buffer is empty.

z Flashing—The printer is receiving or processi

AttentionIndicator (amber)

z On—An error has occurred in the printer.

z Off—The printer does not require attention.

z Flashing—The printer requires attention.

Select Selects the item or value currently shown on the pdisplay. An asterisk (*) is displayed when an item

Menu maps

Press MENU to cycle through the printer control pa



Press MENU to cycle through the printer control pamenu is described in a separate table in this sectidisplayed only if their associated option or functioactivated.

All menus and their associated items are accessibis online. In a menu mode, if no keys are pressed 30 seconds, the system automatically returns to thdisplays one of the following:

z READY if the printer was online

z OFFLINE if the printer was offline

z an existing error or service message

Making selections in the printer contro

1 Press MENU until the menu you want appearscontrol panel display.

2 Press ITEM until the item you want appears on

3 Press – VALUE + until the value you want appe

4 Press SELECT to save the selection. An asteris

right of the selection.

5 Repeat steps 1 through 4 until all of your chan

6 Press GO to bring the printer online.

Note Changes in the printer control panel will not take e

data in the print buffer prints or until the next print

Table 12. Printer control panel menu map overview

INFORMATION PROOF AND PAPER HANDLING CONFIGURATIO



MENU PRINT MENU MENU MENU

PRINT MENU MAP

PRINT CONFIGPAGE

PRINT PCL FONTLIST

PRINT PS FONT LIST

PRINT LASERJETDEMONSTRATION

PRINT FILEDIRECTORY

PRINT EIO PAGE

PRINT CONTINUOUSCONFIG PAGES

PRINT EVENT LOG

<job name><job owner>

TRAY 1 MODE=

TRAY 1 TYPE= 1

TRAY 1 SIZE= 1

TRAY 2 TYPE=

TRAY 3 TYPE=

TRAY 4 TYPE=

PAPER DEST=

DUPLEX=

BINDING=

MANUAL FEED=

OVERRIDE A4WITH LETTER=

AUTO PAPER

OVERRIDE=

POWERSAVE=

PERSONALITY=

CLEARABLEWARNINGS=

TONER LOW=

PRINT PSERRORS=

INITIALIZE DISK

1 Appears only if TRAY 1 MODE = CASSETTE.2 Shows PAPER for sizes that are normally sheets of paper, and shows ENVELO

normally envelopes.

I/O MENU RESETS MENU COLOR ADJUST

MENU

SERVICE MODE

MENU 3

I/O TIMEOUT FACTORY PRINT TEST PAGE NVRAM SETTIN

Table 12. Printer control panel menu map overview (continue



I/O TIMEOUT=

PARALLEL ADVFUNCTIONS=

FACTORY

DEFAULTRESET

RESET ACTIVEI/O

RESET ALL I/O

RESETTRANSFERLIFE COUNT

RESET FUSERLIFE COUNT

PRINT TEST PAGE

BLACK SMOOTHVALUE=

CYAN SMOOTHVALUE=

MAGENTA

SMOOTH VALUE=

YELLOWSMOOTH VALUE=

BLACK DETAILVALUE=

CYAN DETAILVALUE=

MAGENTA DETAILVALUE=

YELLOW DETAILVALUE=

NVRAM SETTIN

FORMATTERDIAGNOSTICS

PAPER PATH

DEVELOPERMOTOR

DRUM MOTOR

SENSORMONITOR

EXIT SERVICEMODE

3 The Service Mode Menu can only be entered by pressing – VALUE and – ITEM keat the same time. The menu items will not be visible until the Service Mode Meis entered.

Information Menu

Press SELECT to print.

The printer displays READY when finished.



The printer displays READY when finished.

Table 13. Information Menu

Item Value Description / action

PRINT MENU MAP None Shows current settin

PRINT CONFIG PAGE None Shows the configura

including installed opnumbers.

PRINT PCL FONTLIST

None Shows installed PCLfonts.

PRINT PS FONTLIST

None Shows installed Pos

PRINT LASERJETDEMONSTRATION

None Prints a demonstratipurposes.

PRINT FILE DIRECTORY None Appears only if the pinstalled.

PRINT EIO PAGE None Appears only if an Ethat supports EIO pa

PRINT CONTINUOUS CONFIG

PAGES

None Used for testing prin

PRINT EVENT LOG None Shows printer events

Proof and Print Menu

This menu appears only if the printer has a hard d



Paper Handling Menu

Table 14. Proof and Print Menu



<nn> SELECTED<nn> PRINTED

<nn> = Number of c

To cancel a proof an

1 Press ITEM to d

job owner.2 Press – VALUE

of copies to be

3 Press SELECT tcopies.- Or -Press CANCEL Jcopies to zero tcopies.



<ob name><job owner>






Table 15. Paper Handling Menu


TRAY 1 MODE= FIRST*CASSETTE

TRAY 1 TYPE= PLAIN*PREPRINTDLTRHEAD

TRNSPRNCYPREPUNCHEDLABELSBONDRECYCLED

Appears only if TRA

TRAY 1 SIZE= LETTER*LEGAL

Appears only if TRA

Table 15. Paper Handling Menu (continued)




LEGAL

A4A511X17A3EXECJIS B4JIS B5JPOSTD

COM10MONARCHC5DLB5CUSTOM

TRAY 2 TYPE=TRAY 3 TYPE=

TRAY 4 TYPE=

PLAIN*PREPRINTD

LTRHEADTRNSPRNCY (trays 2

and 3 only)PREPUNCHEDBONDRECYCLEDCOLORGLOSSY

28# TYPE 128# TYPE 2

The TRAY 4 TYPE=the 2,000-sheet inpu

installed.

PAPER DEST= TOP OUTPUT BIN*LEFT OUTPUT BINSTACKER OUTBINSEPARATOR BINMAILBOX 1MAILBOX 2MAILBOX 3MAILBOX 4MAILBOX 5MAILBOX 6

The STACKER OUTand MAILBOX optiomulti-bin mailbox is ifor the appropriate m

MANUAL FEED= OFF*ON

Allows the user to feby hand rather than

Table 15. Paper Handling Menu (continued)




ON by hand rather than

input tray. The user cinstead of automaticfor the paper source.and an input tray is nmanual feed is selec

OVERRIDE A4 WITHLETTER=

NO*YES

Enabling this option documents on letterthe default size), or i

documents on A4-sidefault size). Howevconfigured for the sizthen the printer printmedia regardless of

AUTO PAPER OVERRIDE= OFF*ON

Selects the media threquested media is n

If ON is selected, the<x> LOAD <type> <printer automaticallythe default media sizbe changed through

If OFF is selected, th

<x> LOAD <type> <requested media typpressed.

* Default setting.

Configuration Menu

Table 16. Configuration Menu




POWERSAVE= 30 MIN1 HOUR*2 HOURS3 HOURS10 SEC

The 10-second settipersonnel use.

PERSONALITY= AUTO*

PCLPS

Allows the user to de

personality will be thWhen AUTO is selecdetermine which perprint job.Note: PCL support iproduct introduction

CLEARABLE WARNINGS= ON*JOB

Determines the amoclearable warning is

control panel. If set twarnings are displayset to JOB, then cleadisplayed until the en

TONER LOW= CONTINUE*STOP

Determines the printconsumable low and(including TONER LOUT, FUSER LIFE OLOW).

If set to CONTINUEpressing GO. If set tomessage by replacin

PRINT PS ERRORS= OFF*ON

If the PostScript intecommands, the job i

error page prints. If Oindication that an err

INITIALIZE DISK None Appears only if the adisk is installed.

Printing Menu

Table 17. Printing Menu

It V l D i ti / ti




COPIES= 1* ... 999 Sets the number of usent if the number ofthe print job.

PAPER= LETTER*LEGALA4EXECA511X17A3JIS B4JIS B5JPOSTD

Sets the default medmedia size is used foinclude media size crequested media sizprinter.

ENVELOPE= COM10

MONARCHC5DLB5

ENVELOPE is not a

printer control panel - VALUE + gets to en

ORIENTATION= PORTRAIT*LANDSCAPE

FORM LENGTH= 5 ... 60* ... 128 LINES

PCL FONT SOURCE= SOFTINTERNAL*SLOT n (n = 1,2,3,4)

Sets the default font the requested fonts. first, DIMM fonts secthird if all are installe

PCL FONT NUMBER= 0 (Courier)* ... 999

PCL PITCH= 0.44 ... 10* ...

99.99

Appears only if the s

spaced contour fontPCL POINT SIZE= 4.00 ... 12* ...

999.75Appears only if the sproportional-spaced

* Default setting

PCL SYMBOL SET= PC-8*ROMAN-8

Default symbol set m jobs that do not inclu

Table 17. Printing Menu (continued)




ISO L1ISO L2ISO L5ISO L6PC-775PC-8 DNPC-850PC-852

PC-8TKPC-1004WIN L1WIN L2WIN L5WINBALTDESKTOPPS TEXTLEGALISO-4ISO-6ISO-11ISO-15ISO-16ISO-17ISO-21ISO-60ISO-69WIN 3.0MC TEXT

commands.

COURIER= REGULAR*DARK

DARK emulates the the HP LaserJet III plighter and more accsince the HP LaserJ

and magazines.WIDE A4= NO*

YESAllows the user to chof A4-sized media socharacters can be p

I/O Menu

If an EIO card is installed, an additional EIO menu



Resets Menu

Table 18. I/O Menu


I/O TIMEOUT= 5 ... 30* ... 300 Period of time that thseeing data before ccomplete and printineffect for jobs with e

PARALLEL ADVFUNCTIONS= ON*OFF Forces parallel port twhich can be more rbut will not allow theto the host computer

* Default setting.

Table 19. Resets Menu


FACTORY DEFAULT RESET None Resets menus to theMenu and Color Adjchange.

RESET ACTIVE I/O None Resets I/O to known

RESET ALL I/O None Used to clear I/O pro

RESET TRANSFER LIFECOUNT

None Used to indicate thabeen installed.

RESET FUSER LIFE COUNT None Used to indicate thabeen installed.

Color Adjust Menu

Table 20. Color Adjust Menu





PRINT TEST PAGE None See page 414 for infmenu.

BLACK SMOOTH VALUE= -6 ... 0 ... +6

CYAN SMOOTH VALUE= -6 ... 0 ... +6

MAGENTA SMOOTH VALUE= -6 ... 0 ... +6

YELLOW SMOOTH VALUE= -6 ... 0 ... +6

BLACK DETAIL VALUE= -6 ... 0 ... +6

CYAN DETAIL VALUE= -6 ... 0 ... +6

MAGENTA DETAIL VALUE= -6 ... 0 ... +6

YELLOW DETAIL VALUE= -6 ... 0 ... +6

Service Mode Menu

The Service Mode Menu can be entered only by pof the – ITEM and the – VALUE keys at the same timinformation on using the Service Mode Menu, see



z NVRAM SETTING menu is provided to replacbe lost when a formatter board or control boarfield.

z FORMATTER DIAGNOSTICS menu is providmanufacturing and field service personnel to diagnostic tests on the formatter board and its

components.• Service personnel can pinpoint problem are

board for replacement or for tracking defec

• The operator can choose which tests are edisabled during execution, whether the tescontinuously, and whether the test sequenc

failure or continues despite failure.• A fault log is implemented within formatter

record errors for review.

• Because many of the formatter diagnostic tmemory tests, a special key sequence is umode. A message warns service personne

about to perform destructive memory tests

Table 21. Service Mode Menu

Service Mode Menu Item Value Descri

NVRAM SETTING SERIAL NUMBER <xxxxxxxxxx> This nunumbe

Press –value oPress S

DUPLEX COUNT <xxxxxxxxxxxx> Numbeprocess

Table 21. Service Mode Menu (continued)




TRANSFER LIFE LEFT <xxxx> Remainpercent

FUSER LIFE LEFT <xxxx> Remainpercent

ENGINE SETTING 1 <xxxxxxxxxxxx> The regengine color pllisted ofront ofthe printhe righthese vreplacinEnter oeach e

F). Theengine after sechecksdifferen

ENGINE SETTING 2 <xxxxxxxxxxxx> See EN

CR PAPER SIZE LETTER*

A4

The co

is the dcountrylocalizeSETTINchangethe PAPPrintingmake th

the def

CLEAR EVENT LOG NO*YES

Clears

REPEAT= NO*YES





ON FAULT= BREAK*CONTPAUSE

z What come

z Whdoerrfau

z What comecoals

ROM CRC= YES*

NO

Firmwa

DRAM DIMM= YES*NO

Installeensureby the ffunction

IDE ASIC= YES*NO

This teswrite in

IDE AS

DISK= YES*NO

Used tothe prininterfachard distest alsprinter caching

VX ASIC= YES*NO

This teswrite inVX ASI

POWER OFF TO EXIT Turn thexit the





and resPAPER PATH EXECUTE TEST Press S

REPETITIONS 1*...10

TRAY 1= ON*OFF

TRAY 2= ON*

OFFTRAY 3= ON*

OFF

OUTPUT = TOP OUTPUT BIN*

LEFT OUTPUT BIN

DEVELOPER MOTOR REPETITIONS 1* ...10

EXECUTE TEST

DRUM MOTOR REPETITIONS 1* ...10

EXECUTE TEST

SENSOR MONITOR EXECUTE TEST 0123456789AB000000000000

Once Eselecte1) of eashown lower lidisplay as an id

See paon perfexplana

each dthe disp

EXIT SERVICE MODE

Selecting the display language

Use the printer control panel to set the printer to dmessages and print configuration pages in a varie



languages.

1 To enter configure language mode, hold downturning the printer on. When CONFIG LANGUappears on the printer control panel display foone second, release SELECT. Once the printe

LANGUAGE = ENGLISH appears on the disp

Note Only – VALUE +, SELECT, and GO are active while this being configured. All other keys are ignored.

If you press GO without selecting a language, the online and all subsequent messages are displayeHowever, since no display language was selectedENGLISH message reappears (after the power-onprinter is turned on again. This message displays eis turned on until you select a language through themode.

2 Press – VALUE + until the language you want display.

3 Press SELECT to save the selection. An asterisright of the selection. The language selected ilanguage until another selection is made by rein the configure language mode.

4 Press GO.5 Turn the printer off and back on.

Installing the consumables

When installing a new printer, install the consumathis order:



Figure 14. Consumable installation order

1 Imaging drum2 Black toner cartridge

3 Color toner cartridges

1

2

3

To install the im1



1 Open the front do(A). Swing the upthe right (B). Preon the lower (grethe lever to the ri

CAUTIONThere is a cover procylinder. Do not remthe drum might be dcome off during the

2 Push the drum inprotective cover sdrum enters the

3 Swing the lower to the left, makinplace.

NoteIf the lever does not position, make sure drum is all the way i

3

2

A B

C

To install the bl

cartridge

1



cartridge

1 Remove the blacfrom its packaginthe cartridge sevdistribute the ton

CAUTIONDo not lift or removethe cartridge.

2 Align the arrow ocartridge with the

the slot in the pricartridge into the

3 Place one hand ouse the other hanring and remove the seal.

NoteIf toner gets on fabriwith a dry cloth and clothing in cold watetoner into fabric.

4 Swing the upper the left.

Note

4

3

2

A

To install the co

cartridges

1



cartridges1 With the printer o

button beneath thturn the carouselslot.

NoteThe carousel will nothe following conditioof these actions engswitch, which allowsto receive power):

z

the carousel dooz the imaging drum

completely

z the black toner ccompletely

z the orange seal i

black toner cartriz the upper left lev

z the right upper d

2 Open the carousthe (blue) locking

3 Remove the tonepackage that mathe sticker in the its packaging and

2

3

4 Align the arrows cartridge and at tSlide the cartridg

4



Slide the cartridg

NoteIf the cartridge doescompletely into the pthat the color of tone

matches the colored

5 Place one hand ouse the other hanring and remove the seal.

6 Push the blue locthe left and close

NoteIf toner gets on fabriwith a dry cloth and clothing in cold wate

into fabric.

NoteIf the carousel door make sure that the band that the seal hasremoved from the to

7 Rotate the carouremaining slots (

5

6

Configuring input trays

When input trays are configured correctly, the prinmedia type and size and automatically uses the c



Note Setting the media type is necessary for best print qpaper greater than 24 up to 28 lb (90 to 105 g/m2paper greater than 28 lb (105 g/m2) bond.

For example, tray 2 could contain letterhead; tray paper; and the 2,000-sheet input unit, plain letter-trays are configured correctly, when you set up a pchoose the media type and size in the printer drivautomatically prints from the correct input tray.

Selecting the mode for tray 1

Tray 1 has two modes: FIRST mode and CASSET

FIRST mode is the default mode for tray 1. In FIRfunctions as a multipurpose tray. When tray 1 is inspecify the media type and size in the printer drivefirst for media loaded in tray 1. If the correct width

in tray 1, the printer prints from tray 1. If the printemedia in tray 1 is a different size than the media sprinter driver, then the printer does not feed the mtoner residue on subsequent pages).

In CASSETTE mode, tray 1 functions as a regulatray 1 is in CASSETTE mode, load media in tray 1media type and size in the printer control panel.

1 Press MENU until PAPER HANDLING MENU i l l di l

Configuring media type and size

Configuring the media type is beneficial for severa

z Configuring the media type prevents printing opossibly more expensive) media.

z If a user changes the type of media in an inpu



z If a user changes the type of media in an inpucan still print on the correct media.

z The printer automatically adjusts its print speespecial media (such as card stock, labels, andThese adjustments give the highest quality ouand resources.

Note If the media type is not set correctly, then the printethe correct media or at the correct speed for the meresult in poor print quality or excessively slow prin

1 Press MENU until PAPER HANDLING MENU printer control panel display.

2 Press ITEM until TRAY <number> TYPE = app

3 Press – VALUE + until the correct media type adisplay.

4Press S

ELECTto save the selection. An asterisright of the selection.

Note Tray 2, tray 3, and the optional 2,000-sheet input usense the media size. To configure the media sizeCASSETTE mode, continue with step 5. Otherwis

5 Press ITEM until TRAY 1 SIZE = appears on thpanel display.

6 Press VALUE until the media size appears

Verifying the printer is installed correc

Use the printer control panel to print a configuratiothat the printer was installed correctly. Configurati

the following information:



the following information:z general information about the printer (such as

number of pages since most recent maintena

z installed languages

z last three printer events

z memory available and installed dual inline me(DIMMs)

z printer control panel and printer hard disk sec

z installed optional equipment (such as a 2,000multi-bin mailbox, or duplexer)

z tray configuration

z network configuration

1 Press MENU until INFORMATION MENU appecontrol panel display.

2 Press ITEM until PRINT CONFIG PAGE appea

3 Press SELECT to print the configuration page.

Verifying DIMM installation

The printer comes with the following amounts of mslots 1 and 2:

z 16-MB DIMMs in the base and N models



z 16 MB DIMMs in the base and N models

z 32-MB DIMMs in the DN model

In all printer models, slots 3 through 8 are availabDIMMs.

The printer supports ROM and synchronous DRA

inline memory modules). EDO (extended data outMode DRAM DIMMs are not supported.

Figure 15. DIMM slot configuration

� DRAM DIMMs must be installed in synchronizewith the same amount of DRAM are installed iright slots (such as slots 5 and 6).

1

3

5

7

2

4

6

Paper handling accessory status LEDs



Figure 16. Paper handling accessory status LEDs

1 Multi-bin mailbox status LED

2 2,000-sheet input unit status LED

Use table 22 on page 95 to interpret the status LEsheet input unit and the multi-bin mailbox.

1

2

Table 22. Paper handling accessory status LEDs

LED 2,000-sheet input unit Multi-bin m

Solid green The accessory is on and ready. The accesso

Solid amber The accessory is experiencing a The accesso



Solid amber The accessory is experiencing ahardware malfunction.

The accessohardware m

Flashing amber The accessory has a media jam or apage needs to be removed from the2,000-sheet input unit, even if thepage is not jammed.

The vertical transfer unit (VTU)might be open.

The accessoor a page nefrom the muthe page is

The accessoattached to

Off The printer might be in Power Savemode. Press GO.

The accessory is not receiving

power. Check both the powersupply and the power cables.

The printer mSave mode.

The accesso

power. Checsupply and t



4 Printer maintena



Chapter contents

Cleaning procedures . . . . . . . . . . . . . . . . . . . . . .

Cleaning the post charger unit. . . . . . . . . .

Cleaning the density sensor . . . . . . . . . . .

Cleaning the transfer charger . . . . . . . . . .

Cleaning the waste toner tray . . . . . . . . . .

Printer consumables . . . . . . . . . . . . . . . . . . . . . . .

Replacement frequencies . . . . . . . . . . . . .

Installing consumables . . . . . . . . . . . . . . . . . . . .

Toner cartridges. . . . . . . . . . . . . . . . . . . . . .

Transfer kit . . . . . . . . . . . . . . . . . . . . . . . . . .

Drum kit . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fuser kit . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Cleaning procedures

Cleaning the post charger unit

Clean the post charger unit on the transfer drum istreaks in halftone areas.



1 Open the front door.

2 On the lower (green) lever, push the white butlever to the right.

3 Open the right upper door.

4 Pull the transfer drum out until it stops.

5 Locate the post charger unit cleaner by the tra

Figure 17. Cleaning the post charger unit

6 Slid h h i l h

Cleaning the density sensor

Clean the density sensor after replacing the imagprinter colors are inaccurate, and when the messaSENSOR ERROR CYCLE POWER appears on th

panel display.




2 Use the brush located next to the sensor to reparticles from the sensor.

Figure 18. Cleaning the density sensor

Note You can also use a hand wipe to clean the densityscratches on the sensor, do not use any paper prodor paper towels) to clean the sensor.

3 Close the right upper door

Cleaning the transfer charger

Clean the transfer charger when irregular wavy pasolid backgrounds.


P ll h k b d h i b k i



2 Pull the knob out and push it back in.

Figure 19. Cleaning the transfer charger

Cleaning the waste toner tray

The waste toner tray will not normally have much twaste toner tray before moving the printer to anothperforming routine maintenance at the customer s





2 Remove the waste toner tray cover by releasiright side of the cover with a small screwdrive

Figure 20. Removing the waste toner tray cover

3 Remove the waste toner tray.

4 Vacuum toner out of the tray, or use a hand wif there is a small amount of toner in the tray.

WARNING! Do not use a regular vacuum to clean up toner. Thethe vacuum bag, and toner might be harmful if inh



Figure 21. Cleaning the waste toner tray

5 Reinstall the waste toner tray and cover, and

Printer consumables

1 2 3 4 5 6 7



Figure 22. Location of consumables in printer

8 10

9

1 Color toner cartridges 7 Air filters

2 Black toner cartridge 8 Transfer ch3 Imaging drum 9 Pick-up/fe4 Cleaning roller 10 Charcoal f5 T f b l 11 F

Replacement frequencies

Table 23 lists the approximate schedule for replacand the printer messages that appear when each be replaced. Part numbers for each consumable c

page 447. For best print quality output, use HP cohave been designed to work together in this printe



For an explanation of printer control panel messag

HP encourages responsible disposal of HP printethrough its printing supplies recycling program. Allisted above can be disposed of through the printi

recycling program.Table 23. Replacement frequencies for printer consumables

Consumable Printer message Page count

Black toner cartridge TONER LOWREPLACE BLACK

17,000 pages2

Color toner cartridgesCyanMagentaYellow

TONER LOWREPLACE [color]

8,500 pages2

Drum kitImaging drumAir filters (2)Hand wipe

DRUM LIFE LOWREPLACE DRUM KIT

40,000 black-and-whiteonly pages, or 10,000color pages

Transfer kitTransfer drumTransfer beltTransfer chargerCleaning rollerCharcoal filter

Hand wipe

TRANSFER KIT LOWREPLACE KIT

150,000 black-and-whiteonly pages, or 75,000color pages

Fuser kit (110 Volt)FuserPaper rollers (6)

FUSER LIFE LOWREPLACE KIT

100,000 pages

Installing consumables

Toner cartridges

For information on replacing the black and color topage 87 and page 88.



Transfer kit

Replace the parts in the transfer kit when the prindisplays:

TRANSFER KIT LOW / REPLACE KITTRANSFER KIT OUT / REPLACE KIT

Figure 23. Contents of transfer kit

1 Transfer drum

2 Transfer belt

1

2

4

3

6

5

To replace the tr

1 Open the front do2 Push the white b

3



2 Push the white b(green) lever andthe right.

3 Open the upper dside of the printetransfer drum.

4 On the right, bacopening, firmly prelease the right roller. Lift the rollthe right to releas

CAUTIONDo not touch the rolleonly by the blue knobavoid print quality pro

5 While holding theblue knob, insert hole in the left sid

6 Push the right enuntil it snaps into

7 Rotate the transf

blue lever on theof the printer ope

8 Using the blue ha

4

7

8

9 Replace the belt of the new belt inthe printer. Placenotch first to mes

9



10 Rotate the belt d

NoteDamage to the drum

quality problems. Hothe handles.

11 Remove the protcovering the newpulling the tab. D

Reinstall the tran12 Remove the tran

Remove the newfrom its packaginthe new transfer clip, slide the newinto the printer uncharger clicks int

13 On the inside of tblue filter cover adirection of the a

14 Pull the old filter

11

13

12

15 Hold the new filtehandles, and rem

from its packagin16 Slide the filter in

16



the opening and door, making sur

17 Close the upper door does not clo

not be all the way18 In the front of the

lower (green) levmaking sure it cli

19 Close the front dprinter on. The p

should display thSELECT IF TRAit displays the me20. If it does not,

20 When the printerdisplays the mesto bring the printethe transfer drumto step 22.

21 If the printer contdisplay the mess

a. Press MENU un

appears on thepanel display.

b. Press ITEM unt

22

Drum kit

Replace the parts in the imaging drum kit when thpanel displays either of the following messages:

DRUM LIFE LOW / REPLACE DRUM KIT

DRUM LIFE OUT / REPLACE DRUM KITDRUM ERROR / REPLACE DRUM KIT



Figure 24. Contents of drum kit

1 Two air filters

2 Hand wipe

3 Imaging drum cartridge

3

1 2

To replace the im

and air filters1 Open the front do

2



2 Swing the upper right. Then, preson the lower (greit to the right.

3 Pull the drum parblue handle on thand remove the i

CAUTIONA gray cover protects

drum. Do not removecome off during the n

4 Line up the guideslide the new druThe cover will slienters the printer

5 Swing the upper left. Then swing tlever to the left, minto place.

6 Close the front d

upper door on thprinter.

7 On the inside of t

3

4

5

8 On the back of ththe two latches o

lower the door.

9 Remove both filte

8



10 Insert the new filrespective locatio

11 Close the filter do

does not close, mare in place. Useremove toner fro

12 Place the used ppackaging from tthe included recy

recycling informa

9

10

12

Fuser kit

Replace the parts in the fuser kit when the printerdisplays:

FUSER LIFE LOW / REPLACE KITFUSER LIFE OUT / REPLACE KIT



Figure 25. Contents of fuser kit

1 Fuser

2 Hand wipe

3 Six paper rollers

Note The paper rollers are all the same; any of the rolleany of the replacement locations.

If you do not have an optional 2,000-sheet input un

2

1

3

To replace the fu

WARNING!The fuser is very hot

3



burns. Turn the printeprinter to cool for at lbefore beginning this

1 If an optional muattached to the pmailbox away fro

2 Open the lower dof the printer.

3 If the printer contduplexer, press tright side of the dduplexer out of th

4 To unlock the fuslevers down.

5 On the right sidelarge green leversprings.

6 On the left side othe blue gear dowtimes to release

4

5

6

7 Firmly pull the futabs on both end

fuser out.

8 Use the blue tabsf i t th i

7



fuser into the pringuides. On the lerotate the blue getimes until the fus

CAUTIONUse only the blue tabinto the printer.

9 On the right side

the green lever d10 Rotate the blue le

snap into place.

11 If an optional dupfrom the printer, sback into the prin

place.12 Close the lower l

13 If an optional muattached to the pmailbox back tow

8

9

10

To replace the ro

1 Remove trays 2 a2 On the inside rig

locate the two pa

2



locate the two pablue on the ends

Note

The separation rolleron the end will not be

3 On the end of eatogether the releahandle between slide the roller ofthe rollers aside.

4 While holding thehandle, slide the spindle until it clicRepeat this procthree rollers.

5 Replace trays 3 a

NoteTrays 2 and 3 are no

6 If an optional 2,0is not attached toproceed to step 9input unit is attac

3

4

7 Locate the two rorollers (upper roll

them (lower rolle

Note

7



Note

Press down on the loreplacing the upper o

8 Close the verticaturn the printer o

9 The printer contrdisplay the messSELECT IF FUSdisplays the mes

If it does not, go 10 When the printer

displays the mesto bring the printethe fuser life cou12.

11 If the printer contdisplay the mess

a. Press MENU unappears on thepanel display.

b. Press ITEM unt

LIFE COUNT c. Press SELECT

life count

12



5 Theory of operat



Chapter contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Color theory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Subtractive color theory . . . . . . . . . . . . . . .

Subtractive color absorption . . . . . . Subtractive color mixing. . . . . . . . . .

Half-toning . . . . . . . . . . . . . . . . . . . . .

Process colors . . . . . . . . . . . . . . . . . .

Additive color theory . . . . . . . . . . . . . . . . .

Image formation . . . . . . . . . . . . . . . . . . . . . . . . . .Electrostatic latent image formation block .

1. Preconditioning exposure . . . . . .

2. Primary charging. . . . . . . . . . . . .

3. Laser beam exposure . . . . . . . . .

Developing block . . . . . . . . . . . . . . . . . . . . 4. Development . . . . . . . . . . . . . . . .

Transfer block

Imaging drum cleaning block . . . . . . . . . . .

11. Imaging drum cleaning . . . . . . .

Fusing block. . . . . . . . . . . . . . . . . . . . . . . .

12. Fusing . . . . . . . . . . . . . . . . . . . .

Consumable detection mechanisms . . . . . . . . . . Drum kit life detection . . . . . . . . . . . . . . . .

Waste toner level detection . . . . . . .



Transfer kit life detection . . . . . . . . . . . . . .

Fuser kit life detection . . . . . . . . . . . . . . . .

Color toner level detection . . . . . . . . . . . . . Color cartridge sensor . . . . . . . . . . . . . . . .

Color toner lever detection. . . . . . . . . . . . .

Black toner level detection and cartridge de

Environment change control . . . . . . . . . . .

Color calibration density sensor. . . . . . . . . Transfer belt control . . . . . . . . . . . . . . . . . . .

Cleaning roller control . . . . . . . . . . . . . . . . .

Carousel control . . . . . . . . . . . . . . . . . . . . .

Carousel stop solenoid . . . . . . . . . .

Electrical systems . . . . . . . . . . . . . . . . . . . . . . . . .

Power distribution . . . . . . . . . . . . . . . . . . .

Fuser control . . . . . . . . . . . . . . . . . . . . . . .

High-voltage power supply circuit . . . . . . .

Mechanical systems . . . . . . . . . . . . . . . . . . . . . . .

Laser/scanner . . . . . . . . . . . . . . . . . . . . . . .

Motors and heaters . . . . . . . . . . . . . . . . . .

Carousel motor (M1) . . . . . . . . . . . .

Paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pick-up/feed. . . . . . . . . . . . . . . . . . . . . . . . .

Automatic overhead transparency det

Paper pick-up. . . . . . . . . . . . . . . . . . .

Sensors, switches, clutches, and solenoidsSwitch functionality . . . . . . . . . . . . .

Fusing and delivery unit. . . . . . . . . . . . . . .



Media jam detection . . . . . . . . . . . . . . . . . .

EPH controller board . . . . . . . . . . . . . . . . . . . . . . .

2,000-sheet input unit . . . . . . . . . . . . . . . . . . . . . .Power supply . . . . . . . . . . . . . . . . . . . . . . .

Sensors, switches, clutches, and motors. . .

Pick-up and feed system . . . . . . . . . . . . . .

Switch functionality . . . . . . . . . . . . . . . . . .

Lifter operation. . . . . . . . . . . . . . . . . . . . . . Paper path . . . . . . . . . . . . . . . . . . . . . . . . .

Multi-bin mailbox . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating modes . . . . . . . . . . . . . . . . . . . .

Configuring operating modes . . . . . . . . . .

Power-on sequence. . . . . . . . . . . . . . . . . . .

Communication link (C-link) cables . . . . . .

Sensors, switches, motors, and controller b

Receiving paper. . . . . . . . . . . . . . . . . . . . .

Delivering paper. . . . . . . . . . . . . . . . . . . . .

Paper path . . . . . . . . . . . . . . . . . . . . . . . . .

Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Printer timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Introduction

This chapter presents the theory of operation andoverview for the printer. It provides the service rep

understanding of the printing process required to This chapter discusses the following:

q Color theory

I f ti



q Image formation

q Paper path

q Mechanical drive system

q Control board system

q Formatter system

q Power distribution system

q 2,000-sheet input unit

q Multi-bin mailbox



1 Black toner cartridge

2 Imaging drum

3 Charging roller

4 Imaging drum cartridge

5 Laser/scanner

6 Preconditioning exposure LED

17 Registration

18 Transfer cha

19 Upper fusing

20 Lower fusing

21 Tray 2

22 Tray 3



6 Preconditioning exposure LED

7 Post charging unit

8 Transfer drum9 Transfer belt

10 Tray 1

11 Tray 1 pick-up roller

12 Separation pad

13 Feed roller 1

14 Feed roller 2

15 Separation rollers

16 Pick-up rollers

22 Tray 3

23 Duplexer de

24 Left (face-updeflector

25 Left (face-updelivery rolle

26 Cleaning rol

27 Left (face-up

28 Color toner c

29 Color toner c

30 Delivery rolle

Color theory

There are two methods used to create color. The (which is used in this printer) and the additive procin monitors and television).

Subtractive color theory



The subtractive color theory deals with mixing colas those found in toner, ink, and paint) to producesubtractive primary colors are cyan, yellow, and m

colors will produce any color in the spectrum whecertain proportions. The subtractive process beginwhite light reflected from a white surface (for instacolor components of the light are reflected or absoand toner.

Subtractive color absorptionTable 24 describes how colors are mixed to producolors.

Table 24. Subtractive color absorption

Pigment colorColor ofabsorbed light

Colors ofreflected light P

Magenta Green BlueRed

M

Yellow Blue RedGreen

Y

Cyan Red GreenBlue

C

N N R d W

Subtractive color mixing

Table 25 describes how mixing equal amounts of produces other colors.

Table 25. Subtractive color mixing

Mix equal amounts of... To produce...

Cyan + Yellow + Magenta Black



Half-toning

Half-toning (also called dithering) is a method usepigment to create a full spectrum of color. Becausdots of toner on a page to create an image rather mixing the color (like paint), the dots are distributepatterns. Although they are not physically combineye integrates the dots and the viewer perceives tcolor.

Process colors

The printer does not use half-toning for every appfour basic colors (cyan, magenta, yellow, or black)a solid color. Since red, green, and blue are formebase colors, they are called process colors. See pexplanation of how the process colors are createddrum.

Cyan + Yellow Green

Yellow + Magenta Red

Magenta + Cyan Blue

Additive color theory

The additive color theory deals with colors that arlight sources are mixed. The primary additive coloand green. Adding various levels of these colors, generated by a light source (such as a color moni

other colors. Mixing equal amounts of the additiveproduces the colors indicated in table 26.



Table 26. Additive color mixing

Mix equal amounts of... To produce...

Red + Green + Blue White

Red + Blue Magenta

Green + Blue Cyan

Red + Green Yellow

Image formation

Figure 27 and figure 28 give an overview of the improcess.



Figure 27. Image formation

Figure 28 shows the simultaneous processes of impaper pick-up that occur during the electrostatic laformation block.



Figure 28. Electrostatic latent image formation block

Electrostatic latent image formati

One of the differences between color and black-aimaging is that the color image is created with muprinter contains four toner cartridges (cyan, mageblack).

The electrostatic latent image formation block confor forming the image on the imaging drum. At thestep, the negative charge on the unexposed area negative charge on the exposed area is decrease



negative charge on the exposed area is decreaseimage on the drum is invisible to the human eye aelectrostatic latent image.

1. Preconditioning exposure

To prepare for primary charging, the preconditioniunit removes the residual charge on the imaging dhelps prevent uneven surface charge on the imag

2. Primary charging

In preparation for the latent image formation, the isurface is charged so that it has a uniform negativDC bias are applied to the primary charging rollernegative potential charge on the drum surface.



Figure 30. Primary charging of imaging drum

3. Laser beam exposure

When the laser beam scans the imaging drum surthe exposed area is decreased. This area then forlatent image.

Developing block

The black toner used in the printer is magnetic sintoner composed of magnetite and resin. The colomagnetic single-component toner composed of regiven a negative charge when they rub against th

cylinder and the blade.

4. Development

The developing cylinder is biased to create a pote



The developing cylinder is biased to create a potethe imaging drum. This bias consists of AC and DAC component breaks the toner free from the dev

creating a toner cloud. The DC component drivesto the imaged region on the imaging drum.

The three color cartridges are brought into contacdrum when the carousel rotates. The black toner cseparately, and is always in contact with the imagiarea on the imaging drum exposed by the laser be

developing cylinder, the charged toner particles mdeveloper to the image surface because of the pobetween the developing cylinder and the exposed

Transfer block

The image is built up on the transfer drum in layertoner is then transferred to the paper. The transfetransfer of the toner from the imaging drum to the from the transfer drum to the paper.

5. Primary transfer

A positive DC bias is applied to the transfer drum transfer the toner that is on the imaging drum to th



transfer the toner that is on the imaging drum to thThis process occurs in sequence for the four colorcyan, black).

For full-color printing, as the transfer steps proceecolors, the amount of toner with negative charge itransfer drum. As a result, the DC bias must incretoner on top of the toner that is already on the tra

6. Post charging

AC and DC bias are applied to the post charging appropriate bias to the toner that is on the transfeincrease the efficiency of the secondary transfer.

The post charging unit is turned on during the yeltransfer as well as after the entire image is formedtoner transfer, the negative charge is decreased. Aapplied for the black toner transfer to increase thesecondary transfer (the transfer of the toner from tth )



the paper).

Figure 33. Post charging

7. Secondary transfer

The paper is pressed against the transfer drum whpress clutch (CL4) pushes the transfer belt up to tPositive DC bias is applied to the transfer belt to tthat is on the transfer drum surface to the paper. T

value changes according to the paper type (such overhead transparency) and environmental condittransfer belt is highly resistive, the potential bias ispages to eliminate excessive charge build up on t

After a jam negati e DC bias is applied to the tran



After a jam, negative DC bias is applied to the tranany residual toner from the transfer belt. The resid

back to the transfer drum, and is then collected incase in the imaging drum.

8. Separation

The paper is separated from the transfer drum becelasticity. When duplex printing or overhead transprinting is performed, an AC bias is applied to the high temperature/high humidity conditions, the AC

since excessive charge does not build up in high hThe AC bias is applied to the transfer charger to pbetween the paper and the transfer belt, which ca



Figure 35. Separation

Transfer drum cleaning block

This block follows two steps to clean the transfer dmost of the toner is transferred to the paper duringtransfer, some toner particles remain on the transThis residual toner on the transfer drum is returne

drum, where it will be moved to the waste toner ca

9. Cleaning roller charging

Bias is applied to the cleaning roller so that the re



pp gtransfer drum surface is charged positive. The cleusually separated from the transfer drum. Howeve

roller can be brought into contact with the transfercleaning roller press cam which is activated by thepress solenoid (SL1). When contact is made, posto the cleaning roller to charge the toner on the trapositive.

After the charging is complete, the bias is turned o

roller press cam separates the cleaning roller fromAfter printing is complete, negative bias is appliedroller to remove the residual toner.

10. Transfer drum cleaning

The bias on the imaging drum is negative, and thetransfer drum is positive. Since the charge on the made positive by the transfer drum cleaning rollerfrom the transfer drum to the imaging drum, wher

during imaging drum cleaning.



Imaging drum cleaning block

In the primary transfer, not all of the toner on the itransferred to the transfer drum, leaving some tondrum surface. Also, additional toner is placed on tsurface when the transfer drum is cleaned.

11. Imaging drum cleaning

To prepare for the next printing operation, the cleathe residual toner off the imaging drum surface. T



particles are trapped with the sweeper strip and cwaste toner case.

Fusing block

The toner image placed on the paper during transpaper by static electricity, and a light touch will smDuring fusing, the four toner colors are melted on a permanent image.

12. Fusing

The surfaces of the upper and lower fusing rollerssilicone, which has excellent offset prevention per



upper fusing roller is charged with a negative DC toner and help prevent the toner on the paper from

roller.

Figure 39. Fusing the toner

Consumable detection mechanisms

For information on resetting the consumable life con page 78.

Drum kit life detection

The imaging drum cartridge contains a memory dof images printed is written to the imaging drum cThe controller board senses the imaging drum life



The controller board senses the imaging drum lifeon the data from the imaging drum cartridge mem

image count reaches approximately 35,000 imageLOW / REPLACE DRUM KIT is displayed on the pThis error is also written into the imaging drum carcannot be erased.

The printer is still able to print after the imaging drwarning. The controller board counts the number

after notification occurs. When the number reache40,000 images, the controller board stops the prinDRUM LIFE OUT / REPLACE DRUM KIT. Printinguntil a new imaging drum is installed.

Note An image is one layer of toner (cyan, magenta, yecolor page is counted as four images.

Waste toner level detection

The waste toner detection unit in the printer senselevel by emitting light into the detection window anthrough the imaging drum cartridge when the stirri

removes the waste toner around the detection winboard detects the toner level by timing from the mdetection window is cleared, to the time the waste

i d If h i i h h d l

controller board stops the printer and signals DRUREPLACE DRUM KIT. Printing cannot continue wimaging drum being installed.

Note If the imaging drum cartridge memory fails, a warnon the printer control panel. Printing can continue usensor indicates full.



Figure 40. Waste toner level detection

Transfer kit life detection

The transfer kit life is determined by both the pageThe number of images printed is stored in the formcontroller board senses the transfer kit life expiratdata. When the life data reaches 149,000 pages o

total, TRANSFER KIT LOW / REPLACE KIT is disprinter control panel. The printer is still able to prinkit low warning.

The formatter counts the number of printed imagekit low warning occurs. When the number reaches



g300,000 images, the controller board signals TRA

REPLACE KIT. End of life behavior is determined LOW setting on the printer control panel (see pagcontinue after the transfer kit out signal, however be degraded and the number of jams might increa

Because there is not a memory mechanism in theis necessary for users and service personnel to recount when a new transfer kit is installed. Also if tis replaced, the transfer count must be reset in the

Fuser kit life detection

The controller board senses the fuser kit life expirpage count stored in the formatter. When the pag

99,000 pages, FUSER LIFE LOW / REPLACE KITprinter control panel. The printer is still able to prinlife expiration warning. The formatter counts the nimages after notification occurs. When the numbe100,000 pages, the controller board signals FUSEREPLACE KIT. End of life behavior is determined LOW setting on the printer control panel (see pag

continue after the fuser life out signal, but print qudegraded.

around the detection window. The light receiver oftoner. After PS621 detects light, the controller boauntil light can no longer pass through the detectio

The controller board signals the formatter that thecartridge has no toner if the time the light passes detection window exceeds the fixed time. The printoner level when the printer is turned on, or while rotating.



Figure 41. Color toner level detections

Color cartridge sensor

The color cartridge sensor (PS1901C) detects thecartridge. PS1901C consists of a light emitter and

Color toner lever detection

The printer has a color toner lever sensor (PS190cartridge setup failure. This sensor consists of a llight emitter. If the color toner lever is set incorrectlight emitter is reflected by the color toner lever an

light receiver. The controller board monitors the secarousel door is closed. If the color toner lever is LOCK TONER LEVER is displayed on the printer the carousel will not rotate.



Black toner level detection and c

detection

The toner antenna in the black toner cartridge detlevel. The controller board monitors the toner leveoutput from the toner antenna via high-voltage PCboard checks the signal at the moment that the blbias is applied to the black developing cylinder. If less than specified, the controller board signals thblack toner cartridge has no toner. The black tonedetected by the black toner cartridge switch (SW6



Environment change controlThe controller board judges the temperature/humbased on temperature/humidity sensor signals frohumidity sensors on the temperature/humidity senexecutes the following controls to obtain the appro

q

Controls the value of the secondary transfer bdrum cleaning bias, and the transfer charger b

q Performs a color calibration if the environmenenough.

The controller board checks for an environment cstarting image density control, after the power is t

30 minutes after the image density control is com



Transfer belt control

During secondary transfer, the controller board acbelt press clutch (CL4). The transfer belt is normatransfer drum, except while pushed against the trasecondary transfer. When the secondary transfer

transfer belt is removed from the transfer drum whboard sets the CL4 to off.



Figure 44. Transfer belt control

Cleaning roller control

The controller board activates the cleaning roller p(SL1). SL1 presses the cleaning roller to the transthe secondary transfer begins. When the SL1 signroller press cam presses the cleaning roller, and t

presses against the transfer drum. When the transand secondary transfer are complete, the controllSL1 off to detach the cleaning roller from the trans



Figure 45. Cleaning roller control

Carousel control

cartridge stop position flag); the yellow, magenta, stop position flags (three flags); and the fetch (remreplacement) flags (four flags).

When the controller board receives the print signathe carousel motor (M1) is turned on at normal spcontroller board detects that the carousel rotation slow down position, the controller board reduces tuntil the controller board senses that the carouselreached the stop position.

Figure 46 shows an example of the carousel in thstop position where the printer is ready for yellow



yellow toner cartridge is facing the imaging drum.

Electrical systems

Power distribution

The low-voltage power distribution circuit transform

voltage to supply the DC power sources, +24VB athe printer operates. The +24V source feeds the vsolenoids, and exhaust fans within the printer, whfeeds the controller board and image processor.



When the printer receives the Power Save commaformatter board, the controller board turns off the main relay PCA and stops the supply of +24 UH. sensors, carousel motor, and toner cartridge motoAfter the fuser cools down, all fans are also turnedprinter receives the “wake up” command from the f

printer leaves Power Save mode and resumes no



Fuser control

The fuser controller directly interfaces with both thcontroller board. As the surface temperature of thfusing rollers rises, the resistance of the thermistovoltage of the fusing temperature detection signal

Table 27 shows the temperature the formatter setsbased on the type of media being used.

Table 27. Fusing temperatures

Fusing m



Problems in the fuser can be detected in the follow

q Controller board. If the fuser is heated abnormreach the specified temperature for some reaboard interrupts power to the fuser heaters. Fformatter assesses the fusing heater failure aprinter control panel.

q Fusing heater safety circuit (in the power suppfusing heater safety circuit detects an upper o

Color

mode

Number of

sheets

Fusing m

Plain

paper OHT

H

g

Target

temperature

Full color1st sheet

175° C347° F

175° C347° F

2nd and after

165° C

329° F

170° C

338° F

Black-and-white

1st sheet180° C356° F

175° C347° F

2nd and after165° C329° F

170° C338° F

High-voltage power supply circui

The printer contains three high-voltage PCAs (shothat are directly controlled by the controller board

q High-voltage converter 1 PCA which controls:

• cartridge motor (M3)• imaging drum bias

• black developing bias

• color developing bias

q High-voltage converter 2 PCA which controls:



• transfer drum

• cleaning roller

• transfer belt

• post charging unit

• upper fusing roller

q Separation discharge high-voltage converter

• transfer charger







Motors and heaters

The following section describes the motors and he



Figure 51. Printer motors and heaters

Carousel motor (M1)

The carousel motor (M1) is a two-phase stepping the carousel. The motor operates at low and normdepending on the printer function (such as sensingprinting).



Figure 52. Carousel motor (M1)

Drum motor (M2)

The drum motor (M2) is a two-phase stepping motransfer drum and the imaging drum.

For overhead transparencies and glossy or heavyrotates at low speed (OHT mode: 1/4 speed rotati

heavy media: 1/3 speed rotation). The speed of ththe fuser is identical to the speed at which the methe image transfer process.



Figure 53. Drum motor (M2)

Cartridge motor (M3)

The cartridge motor (M3) is a two-phase steppingthe black and color toner cartridge developing cyl

The motor rotates in the normal direction for color then the motor reverses for black toner developme

gear drive assembly and its associated clutches edeveloper drive gear based on the direction of therotation.



Figure 54. Cartridge motor (M3)

Main motor (M4)

The main motor (M4) is a three-phase, eight-poleThis motor drives the rollers related to pick-up, feedelivery. This motor also drives the transfer belt pcleaning roller press drive cam.

The controller board switches the motor speed bespeed, 1/4 speed for OHT mode, and 1/3 speed fomedia by combining the M4 speed change signals



Figure 55. Main motor (M4)

Pick-up motor (M5)

The pick-up motor (M5) is a two-phase stepping mthe paper, drives tray 2 and 3 tray lifts, and activatrollers for trays 2 and 3. During tray 2 paper pick-unormal speed. During tray 3 pick-up, normal speeused.



Figure 56. Pick-up motor (M5)

Fan motors (FM1, FM2, and FM3)

The printer contains three exhaust fans, all of whibrushless motors. Table 29 describes when each oand at what speed they operate.

Table 29. Fan operation

Turnprinter on Standby Printing

Power Saor power<30 minu

FM11 Full speed On On On



FM2 Full speed Full speed Full speed Full spee

FM3 Off Off Full speed Off

1 FM1 contains a thermistor, and the fan speed changes according to the temper

Paper path

Figure 57 shows the printer paper path.



Figure 57. Paper path

Pick-up/feed

For cassette paper pick-up, the paper is sent into pick-up roller, then fed by the feed roller. After the corrects the skew of the paper, the paper stops. Trefed so that its leading edge will match the top of

transfer drum. After that, the paper is fed through separation, and fusing/delivery units to the top (fa(face-up) output bin. The printer switches the spepaper is fed for different media types as indicated

Table 30. Feed speeds based on media type



The controller board switches the feed speed wheroller paper sensor detects the paper. The printer transparency sensors (PS1801 and PS1802, see172), and the controller board always monitors the

Automatic overhead transparency dete

The printer enters overhead transparency (OHT) mselects to print on transparencies through the prinselecting OHT as the media type in the printer conOHT sensors (PS1801 and PS1802, see figure 60installed in front of the registration roller to detect even if the media type has not been set at the printhe user. The controller board monitors these senautomatic overhead transparency detection.

PS1801 and PS1802 consist of light emission andunits. When a transparency is used, the light emit

Modes Plain paper Glossy or heavy media

Feed speed Normal speed 1/3 of normal speed 1

Paper pick-up

Paper pick-up begins when the print signal is sentis lowered to the paper level, and the main motor roller. This process feeds the paper into the printetrays.

q Tray pick-up — When the pick-up motor is in tray 2 pick-up roller, feed roller 1, and separatiThe paper is then picked up from the tray 2 picase of reverse rotation, the tray 3 pick-up roland separation roller are driven. The paper is the tray 3 pick-up roller.

• Multi-feed prevention mechanism — Du



from tray 2 or 3, the separation roller preve

• Tray 2 last page detection — The last paconsists of a light emitter and light receiverpresent in tray 2, the light from the light emthe paper and received by the light receivethe last page is picked up, the light from th

transmitted inside the printer and does notreceiver. The controller board signals the fois no paper in tray 2 and stops formation ofThe tray 2 last page detection prevents thethe transfer drum from getting dirty by deteis available before the next image is written



q Tray 1 pick-up — One sheet of paper is prespurpose pick-up roller by the paper lifting platby the rotation of the pick-up roller. Any extra sby the separation pad then sent inside the printransmission is the same as for tray pick-up exlifting plate solenoid is re-set on to lower the p

right after registration roller rotation.• Tray 1 paper width sensor — The tray 1 (PS1701) detects the paper width when thmedia width guides, which moves the slideconnected with the size-control plate. Whetray 1, the controller board detects the pappaper width is not the width specified by th



controller board notifies a paper size failureand stops the printer.

• Tray 1 last page detection — The tray 1 l(PS19) monitors the rotation of the last pagtray 1 and detects the last page. If the tray pages, the last page detection roller does n

When the last page is picked up, the last protates by the page and PS19 and sends acontroller board. The controller board then formatter that no pages are in tray 1 and stformation. The PS19 detects no page befowritten and prevents the imaging drum andfrom getting dirty.



Figure 59. Tray 1 pick-up

1 Registration roller clutch drive signal

2 Main motor drive signal

3 Registration roller paper detection

signal4 Tray 1 pick-up clutch drive signal

SL4 Lifting

CL1 Regist

CL3 Tray 1

PS1 Registsensor

Sensors, switches, clutches, and

The following figures and tables illustrate and desswitches, clutches, and solenoids in the printer pa



Figure 60 Printer sensors

Table 31. Printer sensor names and descriptions

Name Description

PS1 Registration roller paper sensor

PS3 Carousel position sensor

PS5 Separation sensor

PS10 Top (face-down) output bin paper full sensor

PS11 Top (face-down) output bin delivery sensor

PS17 Pick-up unit paper sensor

PS18 Pick up unit cover sensor



PS18 Pick-up unit cover sensorPS19 Tray 1 last page sensor

PS29 Tray 2 last page sensor

PS30 Left cover sensor

PS1201 Tray 3 sensor

PS1202 Tray 2 sensorPS1203 Tray 3 paper level sensor 2

PS1204 Tray 3 paper level sensor 1



PS1207 Tray 3 paper out sensor

PS1208 Tray 2 paper out sensor

PS1301 Tray 1 paper sensor

PS1302 Lifting plate position sensor

PS1801 OHT sensor 1

PS1802 OHT sensor 2



Figure 61. Printer switches

Table 32. Printer switch names and descriptions

Name Description

SW1 Power switch

SW201 Test print switch

SW202 Reset switch

SW641 Right cover switch

SW642 Imaging drum switch

SW644 Black toner cartridge switch

SW671 Delivery cover / front cover switch



SW671 Delivery cover / front cover switchSW672 Toner cartridge cover switch

SW673 Carousel button switch

SW1601 Tray 3 paper size detection switch


SW1603 Tray 3 paper size detection switchSW1604 Tray 3 paper size detection switch





Switch functionality

The following table describes the functionality of tswitches in the printer.

Table 33. Tray 2 and Tray 3 paper size detection

Paper size detection swit

Paper size SW1601 SW1602 SW160

A3 Off On Off

A4 (horizontal) Off Off On

A4 (landscape) On Off Off



A4 (landscape) On Off OffA5 Off Off On

B4 On Off Off

B5 Off On Off

Ledger Off Off Off

Legal On On OffLetter (horizontal) Off Off Off



Figure 62. Printer clutches and solenoids

Table 34. Printer clutch and solenoid names and descriptions

Fusing and delivery unit

The upper and lower rollers in the fuser and the fadown delivery rollers are driven by the main motoseparated from the transfer drum is fed into the fufrom the unit via the fusing roller and the fusing defusing delivery sensor detects paper delivered fro

The printer has a left (face-up) output bin and a tooutput bin, and diverts the media to the output binflapper. When the face-up output bin solenoid drivthe face-up solenoid moves the face-up flapper tooutput bin. From there, the paper is delivered to thbin. When the face-up solenoid drive signal turns

delivered to the face-down output bin. Paper delivd bi i d d b h f d



a p b apdown output bin is detected by the face-down outpsensor. When paper fills the face-down output binthe face-down output bin paper full sensor.



Figure 63. Fusing and delivery unit

1 Left (face-up) output bin solenoidd i i l

PS10 Top (facef l

Media jam detection

The controller board checks if paper is at the appthe proper time. If the controller board detects a mprinter stops printing and signals a jam condition tboard.

EPH controller board

The external paper-handling (EPH) controller boacommunication from the printer to the input and oEPH controller board PCA is integrated onto the p

PCA.




The 2,000-sheet input unit is a multi-speed high-c

feeds paper to the printer. The 2,000-sheet input uautomatically senses the paper size.

Power supply

The 2,000-sheet input unit has an internal power sactivated when the printer power switch is turned controller board on the printer sends a power-on ssupply on the 2,000-sheet input unit. When the sigpower supply provides both +24V and +5V to the The +24V drives the motors, clutches, and solenofeed, and pick-up systems. The +5V drives the seelectronics.

Sensors, switches, clutches, and

Figure 64 and table 35 illustrate and describe the clutches, and motors on the 2,000-sheet input uni

9 10

4

3

2

1



Figure 64. 2,000-sheet input unit sensors, switches, clutc

7

8

6

5

Table 35. 2,000-sheet input unit sensors, switcand motors

Ref. Control device Description

1 PS32 Paper exit sensor

2 PS31 Paper entry sensor

3 CL32 Main drive clutch

4 PS35 Vertical transfer unit (VT

5 CL31 VTU clutch

6 MT31 Main motor

7 SW601 - SW602 Paper quantity switches



Pick-up and feed system

When the 2,000-sheet input unit is loaded with patray is closed the paper stack lifts into position un

8 SW701 - SW704 Paper size switches

9 PS34 Paper tray raised senso

10 PS33 Paper tray empty senso

11 Feed roller

12 Pick-up roller

13 Separation roller

14 Controller board PCA

15 Diagnostic LEDs

16 Normal/diagnostic mode17 Power supply

feed, and separation rollers. As the pick-up roller feeds into the vertical transfer unit (VTU) and pasPS31 and PS32 sensors.

If the paper fails to reach the PS31 and PS32 senwithin the allotted time, the controller board PCA oinput unit assumes that a paper jam has occurred

input unit stops operating and reports a paper jamcontroller board on the printer. A paper jam messprinter control panel.

Switch functionality

The following tables describe the functionality of tand paper size switches in the 2,000-sheet input u



Table 36. Paper quantity detection switches

SW601 SW602 Rem

Off OffOn Off

On On

Off On

Table 37. Paper size detection switches

Paper size SW701 SW702 SW703

A3 (portrait) On On Off

A4 (landscape) On On Off

B4 (portrait) Off Off OnLedger (portrait) Off On Off

Lifter operation

The lifting plate in the 2,000-sheet input unit is heare wound on four pulleys by the lifter motor. Wheopen, the pulley gears disengage from the lifter mlifting plate is lowered by its own weight. The presthe tray is detected by switches SW701 through S

paper/tray size switch assembly.

After the paper tray is closed, the lifter motor raiseinto position; this action is detected by the PS34 ssensor also maintains the height of the paper stacpicked up by the rollers, the number of sheets decpaper stack decreases to a certain level, the PS34

low condition. Then the paper deck driver turns onagain and lifts the paper stack until the PS34 sens



again and lifts the paper stack until the PS34 senssufficient paper in the tray.

Paper path

Figure 65 illustrates the paper path components ininput unit.

2

3 4

5

6

7



Figure 65. 2,000-sheet input unit paper path

81

1 Lifting plate 5 Upper VTU2 Paper stack 6 Vertical tra

3 Pick-up roller 7 Lower VTU4 Feed roller 8 Separation

Multi-bin mailbox

The multi-bin mailbox is an output unit designed fofrom 6 to 32 ppm. The multi-bin mailbox holds up distributed in eight 250-sheet face-down bins andface-up bin.

Operating modes

The multi-bin mailbox features four intelligent and operating modes.

q

Mailbox mode — The network administrator bin as an output destination with a name assii t d i t j b t th l t d bi If



printer sends a print job to the selected bin. Iffull, the printer stops printing.

q Job separator mode — Each print job (or comultiple original copies) is placed in a separatmailbox bins are used for this purpose, startin

down bin (at the top). If a multi-bin mailbox binautomatically sends the job to the next availabmore jobs than bins, the extra jobs will start adown bin. This process is seen in the printer slogical bin.

q Virtual stacker mode — Printed sheets are s

in the bins from the lowest bin to the top bin, ra print job begins or ends. All printed sheets abottom bin until it is full; subsequent sheets aupward bin until it is full. This mode of operatioof the total capacity of the multi-bin mailbox bthe software sees the multi-bin mailbox as onthe multi-bin mailbox is full, the printer stops s

all the bins are emptied.

Configuring operating modesThe network administrator chooses the mode of oHP network configuration utility, such as the HP Jethe HP LaserJet utility for the Macintosh. Additionworkstations that print to the printer, the printer drbe set up to reflect the chosen operating mode.

q Bidirectional environment — The printer authe mode established by the network adminis

q Unidirectional environment — The mode ofchanged in the driver to reflect the current musettings. The method for changing the mode vand type of operating system. For additional i

online help for the printer software.



Power-on sequence

During the power-on sequence, the delivery headfirst to the top “home” position at the face-up bin.

the delivery head moves down, scanning to deterbin mailbox bins are installed, if they contain papefull. Then the delivery head proceeds upward agaposition and remains there for about 7 seconds. Fhead assembly moves to the bottom bin, where it command from the EPH controller board.

Note If one of the bins has been removed or is not seatdelivery head assembly will not complete the scanerror message to the printer control panel.

Communication link (C-link) cablCommunication with the multi-bin mailbox is handEPH controller board on the printer. The informatiEPH controller board is carried by the C-link cableEPH controller board PCA to all the devices that sprotocol. Figure 66 shows the C-link connections.



Figure 66. Multi-bin mailbox cabling

Sensors, switches, motors, and cboard PCA

Figure 67 and table 38 illustrate and describe the sensors, switches, motors, and controller board P

1

2



3

4

5

9

6

7

8

Table 38. Multi-bin mailbox sensors, switches, motors, and cPCA

Ref. Control device Description

1 M2 Flipper roller motor with encoder

2 M1 Delivery head motor

3 PSEject Delivery rollers extended sensor

4 SW1 Interlock switch

5 M3 Delivery head roller motor

6 PSBinFull/Head Position Paper bin (below) is full sensor

7 PSBinEmpty Paper bin empty sensor

PSE i P d li d bi



Receiving paper

The printer delivers paper to the multi-bin mailboxup delivery slot (input paper guide) at a rate of 10Paper arrival is sensed by the PSEntry sensor, whflipper roller motor (M2), causing the paper to movbin mailbox transport and delivery system.

8 PSExit2 Paper delivered to bin sensor

9 M5 Transport belt motor

10 PSFaceUp Reverse stepper motor sensor

11 PSFaceFull Left (face-up) output bin full sensor

12 PSEntry Paper entry sensor

13 PSExit1 Paper delivered to head sensor

14 M4 Ejector motor


Delivering paperThe delivery head assembly on the multi-bin mailbin the indicated bin according to the commands cocontroller board on the printer. If paper is designabin, the multi-bin mailbox feeds it through the flipppaper is designated for one of the face-down outp

bin mailbox feeds it through the flipper assembly uis sensed by the PSFaceUp sensor. Then the flippreverses and feeds the paper down between the tthe metal tape until it reaches the delivery head a

Paper path

Figure 68 illustrates the components of the multi-bpath



path.

6

4

2

5

3

1

9

10

1112

13

14

8

1 Face-up bin

2 Delivery head motor

3 Blind cover

4 Bin 1

5 Face-down bins

6 Bin 8


8 Flipper assembly

9 Input paper guide10 Home position

11 Delivery h

12 Metal tape

13 Delivery h

14 Eject rolle

15 Metal tape

16 Transport

17 Paper

18 Magnetic s

19 Transport



Duplexer

The duplexer is installed, below the fusing assemof the paper is printed first. Then the paper is turnback through the paper path to print on the front ssupports variable engine input speeds.

Printer timing

The formatter PCA and controller board PCA shaduring the printer operation. This information consstatus, command, and dot-image data. Figures 69the timing of different printer events.













6 Removal andreplacement

Chapter contentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Removal and replacement strategy . . . . . .

Repair notices . . . . . . . . . . . . . . . . . . . . . .

Electrostatic discharge (ESD) . . . . . . . . . . .

Required tools . . . . . . . . . . . . . . . . . . . . . . .Maintenance units . . . . . . . . . . . . . . . . . . . . . . . .

Doors and covers . . . . . . . . . . . . . . . . . . . . . . . .

Front covers and panels . . . . . . . . . . . . . .

Top cover assembly . . . . . . . . . . . . . . . . . .

Left covers and doors . . . . . . . . . . . . . . . . Right covers and doors . . . . . . . . . . . . . . . .

Rear cover . . . . . . . . . . . . . . . . . . . . . . . . .

Top assemblies . . . . . . . . . . . . . . . . . . . . . . . . . .

Control panel . . . . . . . . . . . . . . . . . . . . . . . .

Laser/scanner unit . . . . . . . . . . . . . . . . . . . Face down output assembly

Left assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . .Multi-bin mailbox . . . . . . . . . . . . . . . . . . . . .

Formatter board. . . . . . . . . . . . . . . . . . . . . .

Internal printer hard disk (DN model) . . . .

Feeder assembly . . . . . . . . . . . . . . . . . . . .

Face-up solenoid . . . . . . . . . . . . . . . . . . . . Face-up exit assembly . . . . . . . . . . . . . . . .

Right assemblies . . . . . . . . . . . . . . . . . . . . . . . . . .

Tray 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pick-up roller . . . . . . . . . . . . . . . . . . . . . . .

Registration roller assembly . . . . . . . . . . . Paper photo (OHT) sensors. . . . . . . . . . . . .

Density sensor. . . . . . . . . . . . . . . . . . . . . . .



Density sensor. . . . . . . . . . . . . . . . . . . . . . .

Paper pick-up assembly. . . . . . . . . . . . . . .

Tray 1 pick-up assembly . . . . . . . . . . . . . .

Rear assemblies . . . . . . . . . . . . . . . . . . . . . . . . . .

Formatter pan . . . . . . . . . . . . . . . . . . . . . .

Fan 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fan 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power supply . . . . . . . . . . . . . . . . . . . . . . .

Controller board. . . . . . . . . . . . . . . . . . . . . .

Cartridge motor (M3) . . . . . . . . . . . . . . . . .

Main motor (M4) . . . . . . . . . . . . . . . . . . . . .

Carousel motor PCA . . . . . . . . . . . . . . . . . .

Carousel motor (M1) . . . . . . . . . . . . . . . . . .

Delivery drive assembly. . . . . . . . . . . . . . .

Main gear assembly (not shown). . . . . . . .

2,000-sheet input unit . . . . . . . . . . . . . . . . . . . . . .Front cover. . . . . . . . . . . . . . . . . . . . . . . . .

Back cover . . . . . . . . . . . . . . . . . . . . . . . . . .

Left cover . . . . . . . . . . . . . . . . . . . . . . . . . . .

Vertical transfer unit (VTU) . . . . . . . . . . . .

Right cover. . . . . . . . . . . . . . . . . . . . . . . . . Tray 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paper pick-up assembly. . . . . . . . . . . . . . .

Controller PCA. . . . . . . . . . . . . . . . . . . . . .

Front LED PCA assembly . . . . . . . . . . . . .

Power supply . . . . . . . . . . . . . . . . . . . . . . . Main drive assembly . . . . . . . . . . . . . . . . .

Paper size sensor assemblies . . . . . . . . . .



p

Tension springs . . . . . . . . . . . . . . . . . . . . .

Multi-bin mailbox . . . . . . . . . . . . . . . . . . . . . . . . . .

Front and back covers . . . . . . . . . . . . . . . .

Top cover . . . . . . . . . . . . . . . . . . . . . . . . . .

Power supply . . . . . . . . . . . . . . . . . . . . . . .

Paper bins and blind cover . . . . . . . . . . . .

Flipper assembly . . . . . . . . . . . . . . . . . . . .

Delivery head position motor . . . . . . . . . . .

Transport belt motor. . . . . . . . . . . . . . . . . .

Input paper guide. . . . . . . . . . . . . . . . . . . . .

Metallic tape and housing assembly . . . . .

Controller PCA. . . . . . . . . . . . . . . . . . . . . .

Anti-curl strings . . . . . . . . . . . . . . . . . . . . . .

Delivery head assembly. . . . . . . . . . . . . . .



Introduction

Removal and replacement strateg

This chapter explains how to remove and replace components.

Replacement is generally the reverse of removal. directions for difficult or critical replacement proce

Repair notices

WARNING! Turn the printer off and disconnect the power cord printer. Failure to follow this instruction could resu

Never operate or service the printer with the protec



Never operate or service the printer with the protecfrom the scanner assembly. The reflected beam, acan damage your eyes.

The sheet-metal parts can have sharp edges. Be yourself when handling sheet-metal parts.

CAUTION Always protect the imaging drum from light and phremoved from the printer. HP recommends reinstacover whenever the drum is removed from the prin

Electrostatic discharge (ESD)

The printer contains parts that are sensitive to ele(ESD). Watch for the ESD reminder shown at the printer parts. Protect the parts that are sensitive toESD wrist strap and protective ESD pouches.

Required toolsThe following tools are needed to service the prin

q Phillips #1 magnetized screwdriver, 6-inch (15

q Phillips #2 magnetized screwdriver, 6-inch (15

q T-10, T-15, and T-20 Torx driver, 6-inch (152-m

q Flat-blade #2 screwdriver

q Small pair of needle-nose pliers

q ESD strap

q Penlight

q Can of compressed air

If you are using a multi-speed screwdriver, ensuretorque limiter. Ensure that you have a Phillips screPosidriv screwdriver.



CAUTION To install a self-tapping screw, first turn it countercwith the existing thread pattern. Then carefully tur

tighten it. Do not over-tighten. If a self-tapping scrstripped, either repair the screw hole or replace th

Maintenance units

The user replaces the following maintenance unitsmaintenance. Chapter 4 explains the maintenanc

The printer keeps track of use on some of its userBecause maintenance unit life is tracked by the fo

q Color toner cartridges q Transfer cha

q Black toner cartridge q Cleaning rol

q Imaging drum q Charcoal filt

q Air filters q Fuser

q Transfer drum q Paper rollers

q

Transfer belt



page count, swapping maintenance units betweencause a misrepresentation of maintenance unit lif

Doors and covers

The following figures show the orientation of the phandling accessories as they are referred to in thi

1

2

3



Figure 75. Orientation of printer and accessories: top, fro

1 Top cover assembly

2 Front cover

3 Front right cover

Front

Right

3

1

2

3

4

5



Figure 76. Orientation of printer and accessories: rear an

1 Exhaust fan cover

2 Rear cover

3 Left upper cover (includes the left upper door)

4 Left rear cover

5 Left lower cover

LeftRear

Front covers and panels

Removing the front cover

1 Open the front cover.

2 Remove 1 screw holding the strap in place (ca

2



Figure 77. Removing the front cover

1

Removing the front right cover1 Open the front door.

2 Remove 1 screw in the upper right-hand side right cover on (callout 1).



Figure 78. Front right cover

3 Pull the cover off.

Removing the inside left panel1 Remove the front cover (see page 208).

2 Remove the top cover assembly (see page 21

3 Remove 8 screws on the inside panel (callout

1

4



Figure 79. Inside left panel

1

1

3

2

4 Remove the waste toner tray cover (callout 2)tab on the right side of the cover with a small

5 Remove the waste toner tray.

6 Open the left lower door to disengage the inte

7 Swing both the lower green lever (callout 3) alever (callout 4) to the right.

8 Pull the panel off.

Notes on reinstalling:

q When replacing the inside left panel, the lowetoner carousel door must be open so that the

Top cover assembly

1 Remove the front right cover (see page 209). door open



door open.

2 Open the left door and loosen the 2 screws (c

1

3 Open the right door and loosen the 2 screws

Figure 81. Screws behind right door

2



g g

4 Open the front cover.

5 Lift the cover up and unplug the connector (caof the cover.

3

Left covers and doors

Removing the left rear cover

1 Open the left upper door.

2 Support the door and squeeze the prong with

to unhook the strap holding the door to the lef(callout 1).

1



Figure 83. Left door and strap

3 Remove 11 screws (callout 2).

2



Figure 84. Screws on left rear cover

4 Pull the cover to the left and off.

2

Removing the left upper cover1 Remove the left rear cover (see page 213).

2 Remove 2 screws on the rail (callout 1, one scside of the cover and the other is located insid

1



Figure 85. Screws on upper left door

3 Remove the door.

Removing the left lower cover1 Open the left lower cover.

2 Push the spring-loaded stopper hinges (callouprinter and down to release them.



Figure 86. Stopper hinges on lower left cover

3 Move the cover to a 45-degree angle and lift t

1

Right covers and doors

Removing the right upper cover assem

Tray 1 is part of the right upper door. Take the trayyou are replacing the whole assembly (see page assembly does not include the tray.

1 Remove the rear cover (see page 222).


3 On the right side of the door, unplug 4 connecthrough the printer frame to the right upper co

Note Two connectors are plugged into the controller boconnectors are inline connectors. It might be easieconnectors from the rear of the printer and pull theprinter frame than to unplug the connectors from t



Figure 87 Connectors on the right upper door

1

5 With needle-nose pliers, remove the e-ring fro2) on the left side of the door.

2



Figure 88. E-ring

6 Remove the front right cover (see page 209).

7 Rotate the plastic tab (located on the left hinge

angle.8 Lift th d li htl t th l ft d ll it

Removing the right cover subassembly

Note Use this procedure if you want to separate the rightfrom the right upper cover.

1 Open the right upper cover assembly slightly.

2 Pull the right side of the subassembly slightly outward on the right side to snap it out of plac

3 Move the subassembly slightly to the left and

Note There is a small spring on the left side of the subasit does not fall off.


q If the spring falls off the subassembly, slide it through the slot on the left side of the subass



g

Figure 89 Spring on right cover subassembly

Removing the right rear cover1 If you have a 2,000-sheet input unit, open the

(VTU).

2 Remove one screw (callout 1).



Figure 90. Right rear cover

3 Pull the bottom of the cover out and then dow

Removing the right lower cover assem1 Remove the front right cover (see page 209).

2 If you have a 2,000-sheet input unit, open the

3 Remove the right rear cover (see page 220).

4 Remove 4 screws on the right lower cover in p



Figure 91. Screws on the right lower cover

1

Rear cover1 Remove the rear lower left cover (1 screw) (ca

2



Figure 92. Rear cover

2 Remove the left rear cover (see page 213).


4 Remove 3 screws on the right in the sheet me

3

1

Top assemblies

The following assemblies are accessed from the t

q control panel

q laser/scanner unit

q face-down output assembly

Control panel1 Remove the top cover assembly (see page 21

2 Turn the cover upside down.

3 Remove 4 screws attaching the control panel (callout 1).



2

4 Remove 3 screws from the bar on the bottom that is holding the wires in place (callout 2).

5 Release the cable stays.

6 Remove the assembly.

Laser/scanner unit1 Remove the top cover assembly (see page 21




1

Face-down output assembly1 Remove the top cover assembly (see page 21

2 Remove the left rear cover (see page 213).

3 Remove the left upper cover (see page 215)

4 On the top of the printer, remove the black air

releasing the cut tab (callout 1) and lifting the

1



Figure 95. Upper airflow vent

5 Remove 2 screws on the face-down exit sens

3

6 Unplug the sensor connector on the left side orelease 1 cable stay (callout 3).

7 Pull the rail away from the chassis.


4



Figure 97. Face-down output assembly

9 Lift the right side of the assembly, slide the asand lift it out of the chassis.

Front assemblies

The following assemblies can be accessed from tprinter:

q toner lock sensor

q

color cartridge sensorq subrelay PCA

Toner lock sensor and color cartr1 Remove the inside left panel (see page 210).

2 Remove 1 screw on the toner lock sensor (ca



1

5 Remove 1 connector (callout 4).

Subrelay PCA1 Remove the inside left panel (see page 210).

2 Remove the 5 connectors on the subrelay PC

3 Remove 4 screws on the subrelay PCA (callo



Figure 99 Subrelay PCA

2

1

Left assemblies


q formatter board

q

internal printer hard diskq feeder assembly

q face-up solenoid

q face-up exit assembly

Multi-bin mailboxRemove the optional multi-bin mailbox before begthe left side of the printer.

1 Turn the printer off and unplug the power cab

U l h l i bi ilb bl f



2 Unplug the multi-bin mailbox power cable from

3 Unplug the multi-bin mailbox interface cable f4 Holding the multi-bin mailbox by the handle on

main body towards the bottom, pull the mailboprinter.

5 Push down on the end of the guide rail until it bracket on the 2,000-sheet input unit.

6 Raise the guide rail.

Formatter boardIf the formatter board needs to be repaired or rephard drive and retain it to reattach to the formatter

1 Print a configuration page if the printer is able(see page 361). Use this page to reset the NVwill be lost if the formatter board is replaced.

2 Loosen the 2 finger screws (callout 1).



1


q After reinstalling the formatter board, print a cocompare with the configuration page printed bboard was removed. Look at the following NVreset the NVRAM values to match those on thpage that was printed before the formatter bo

• Serial number

• Formatter number

• Page counts (if the controller board is bein

• Transfer kit count (percentage of life remai

• Fuser kit count (percentage of life remainin

• Engine settings

Note The last two digits of the engine settings might vaon the sticker inside the front cover. This differencsum variation and is acceptable.



For information on setting each of these valuepage 80.

Internal printer hard disk (DN moIf the internal printer hard disk needs to be repairedata stored on the hard disk will be lost. Downloainformation as necessary.

1 Remove the formatter board from the printer (

2 Unplug 1 connector (callout 1).

1



Figure 101. Connector on formatter board

3 On the back side of the formatter board, releayour fingers (callout 2).

2

CAUTION Take care not to damage the plastic retaining clips

Feeder assembly

The feeder assembly is located inside the left upp

1 Open the front door, and the left lower cover.2 Remove the left rear cover (see page 213).

3 Remove the left upper cover (see page 215).




1


q Verify that the gears on the left mesh togetheand the bottom of the assembly.

q Replace the screw inside the front door for thebar.

Face-up solenoidThe face-up solenoid is below the carousel stop.

1 Remove the feeder assembly (see page 233)

2 Remove the face-up output bin.

3 Remove the formatter board and formatter paand page 248).

4 Remove 1 screw inside the back of the printer



3

5 Lift the face-up solenoid up to release the tab

remove the solenoid (callout 2).

2



Figure 105. Face-up solenoid


q Ensure that the plastic arm from the solenoid the delivery drive swing arm (callout 3, figure

Face-up exit assembly

The face-up exit assembly is located on the left lo

1 Remove the left lower cover (see page 216).




Figure 106. Screws on the face-up exit assembly

3 Remove the stopper hinges by popping the pe

1

Right assemblies


Tray 1

Tray 1 is part of the right upper door. Take the trayyou are replacing the whole assembly. The new ainclude the tray.

1 Open the tray about 45-degrees out.

q tray 1

q

pick-up rollerq registration roller assembly

q paper photo sensors

q density se

q

paper pickq tray 1 pick



1

Pick-up roller

The pick-up roller is located on the tray 1 pick-up a


2 Rotate the roller cover back off of the roller.

3 Squeeze the tabs on the roller and pull to the

roller (callout 1).



1

Registration roller assemblyThe registration roller assembly is located inside tunder the transfer belt.

1 Open the front door and the right upper door.

2 Remove the transfer drum.

3 Remove the transfer belt.

4 Lift the paper diverter and remove 2 screws (c

1



5 Remove 2 screws on the back of the assemb

Hint You might need to use a shorter screwdriver to get

2



Figure 110. Registration roller assembly (back)

6 Release and remove the cover over the conne

side of the registration roller assembly.7 Unplug the innermost connector on the right s

Figure 111. Connectors on registration roller assembly

3



8 Remove 1 screw from the green knob on the and remove the knob.

9 Pull the registration roller assembly out.


q When you replace the registration roller assemgears mesh or you could cause scarring.

Paper photo (OHT) sensors

The paper photo sensors are located under the reassembly and are used to sense overhead transp

1 Remove the registration roller assembly (see

Density sensor

The density sensor is located on the right upper d


2 With a flat screwdriver release the 6 tabs on t(callout 1).

2



Figure 112. Density sensor

1

Paper pick-up assemblyThe paper pick-up assembly is located inside the assembly.

1 Remove trays 2 and 3.

2 Remove the right upper cover assembly (see

3 Remove the right lower cover assembly (see

4 Remove 4 screws, one in each corner of the passembly (callout 1) and pull the assembly oucm (2 in).



Figure 113 Paper pick-up assembly

1

Tray 1 pick-up assembly

The tray 1 pick-up assembly is located on the righ


2 Remove the screw on the right side of the ass

.

1

2



Figure 114. Paper pick-up assembly

3 Remove the cover on the right side of the ass

1

4 Unplug the 4 connectors on the right side (cal

Note Two connectors are plugged into the controller boconnectors are inline connectors. It might be easieconnectors from the rear of the printer and pull theprinter frame than to unplug the connectors from t

.

4



Figure 115. Paper pick-up assembly


6 Release 2 clips and lift the assembly off.



1

2

3



Figure 117. Rear of printer with formatter pan removed

1 Delivery drive assembly

2 Lower air duct

3 Main motor (M4)

4 Separationvoltage co

5 Separationvoltage co

Formatter pan1 Remove the rear cover (see page 222).

2 Remove the formatter board from the formattepage 230).

3 On the back of the printer, remove 2 screws othe bottom of the pan (callout 1).

1



Figure 118 Formatter pan

4 Remove 5 screws on the left side of the printe

2



Figure 119. Formatter pan (left side)

5 Pull the formatter pan off.

Fan 1

Fan 1 is located on the middle right side of the reainformation on removing the fan 1 housing, see pathrough 6).


2 Unplug the fan connector from the PCA (callo



Figure 120 Fan 1

2



Power supplyThe power supply is located on the lower right sidprinter.



3 Unplug the 5 connectors.4 Release 1 cable stay.

5 Remove 5 screws (2 in the top, 1 on the left, 2(callout 1).



1

Controller boardThe controller board is located on the lower left siprinter.

1 Print a configuration page if the printer is able(see page 361). This page can be used to resvalues that will be lost if the controller board is

2 Remove the rear cover (see page 222).3 Remove the formatter board and formatter pa

and page 248).

4 Unplug 25 connectors.

Hint All 25 connectors are keyed. Also, it is easier to unbefore removing the screws from the PCA.




1

2

Cartridge motor (M3)

This motor is located to the left of fan 1.



1



Figure 124. Cartridge motor

2

Main motor (M4)This motor is located to the right of the controller formatter pan.



3 Unplug 1 connector.4 Remove 4 screws (callout 1), and pull the mo

chassis.



1

Carousel motor PCAThis PCA is located on the upper right side of the


2 Unplug 6 connectors.

3 Remove 1 screw (callout 1).

2



Figure 126. Carousel motor PCA

2

1

Carousel motor (M1)

The carousel motor is located behind the fan 1 ho




4 Remove the 5 screws from the sheet metal cooff.

5 Remove 4 screws from the fan 1 assembly (c

3



1

8 Release 1 cable stay and unplug 1 connector

assembly (callout 4) to remove the housing.9 On the right side of the carousel motor, unplu

(callout 5).

6



Figure 128. Carousel motor

10 Remove 4 screws from the motor and lift it ou

Delivery drive assembly

The delivery drive assembly is located behind thethe formatter pan.

1 Remove the carousel motor PCA (see page 2

2 Remove fan 1 housing (see page 257, steps 4

3 Remove 2 screws (callout 1) from the lower athe lower air duct (callout 2).



1



Main gear assembly (not shown)

1 Open the left lower cover and remove the fuse

2 Open the right upper door and remove the tra

3 Remove the registration roller assembly (see

4 Remove the paper pick-up assembly (see pag

5 Remove the main motor (M4) (see page 255)6 Remove the lower air duct (see figure 129 on

7 Remove the lowest gear (callout 1) on the delassembly (3 screws and 1 e-ring).

1



Figure 131. Access to main gear assembly

8 R t 2 d t 3 f th i t

2

1

High-voltage converter 1 assemb

The high-voltage converter 1 assemblies are locaupper of the rear of the printer.

Removing high-voltage converter 1 PC


2 Remove the rear cover (see page 222).3 Remove 5 screws from the sheet metal cover

4 Unplug 4 connectors (callout 1).

2

3

1



1

2

Removing high-voltage converter 1

1 Remove the high-voltage converter 2 PCA (se

2 Remove 1 screw to release the wire from the (callout 1, screw is hidden from view).



Figure 133. High-voltage converter 1

3 R l 2 bl

1

High-voltage converter 2 assemb

The high-voltage converter 2 includes two PCAs seach other and is located on the upper left side wof the printer.

Removing high-voltage converter 2 PC



3 Remove the controller board (see page 253).

4 Unplug 6 connectors from the PCA (callout 1)

1



1

2


q Seat the bottom of the PCA first by placing thcorresponding holes.

q When putting the PCA back in, be sure you docaught behind it.

Removing high-voltage converter 2






2

1

Main relay PCA

This PCA is located behind the high-voltage conv


2 Remove 5 screws from the sheet metal cover

3 Remove the high-voltage converter 1 PCA (se


1

2



Figure 136. High-voltage converter 2

3

Drum/cartridge drive assembly

This assembly is behind the high-voltage converte

1 Remove the high-voltage converter 1 (see pa

2 Remove the high-voltage converter 2 and the converter 2 PCA (see page 262).

3 Remove the fan 1 housing (see page 257, ste

4 Release 3 cable stays.




1

Separation discharge high-voltag

converter assemblies

The separation discharge high-voltage converter alocated in the bottom right corner of the rear of th

Removing separation discharge high-v

converter PCA1 Remove the rear cover (see page 222).

2 Remove the formatter board and formatter papage 248).




Fi 138 S ti di h hi h lt t

1

Removing separation discharge high-v

converter1 Remove the high-voltage converter 3 PCA (se

2 Unplug 1 connector.

3 Pull the converter toward you and lift out.

Tray 2 and tray 3 media size sens1 Remove the rear cover (see page 222).


3 Remove the power supply (see page 252).

4 Release 1 cable stay.

5 Remove 1 screw (callout 1) from the plate and



1

6 Open the corresponding tray.

7 Remove 3 screws (callout 2) and unplug 1 coPCA to remove.

2



Figure 140. Media size sensing PCAs

Note The two PCAs and wire-sensing finger assemblie


You do not need to detach the 2,000-sheet input uto service any of the units. The replaceable units

q front, back, left, and rightcovers

q vertical transfer unit (VTU)q tray 4

q paper pick-up assembly

q controller PCA

q front LED

q power sup

q main driveq paper size

assemblie

q tension sp



Front cover

1 Open tray 4 to the stops.

2 Remove the paper limit-back plate from the tr

.

2

3

1



Figure 141. Front cover of the 2,000-sheet input unit


4

Back cover

1 Unplug the power cord and the C-link interfac2,000-sheet input unit.


1



Figure 142. Back cover removal

3

Left cover



1

2



Figure 143. Left cover removal

2

Vertical transfer unit (VTU)

Remove the VTU to access the left side of the unitmechanisms.


2 Open the VTU.

3 Rotate the 2 plastic safety catches on the VTUthe unit to the “open” position (callout 1).

2



1

6 Pull the door halfway closed, then lift the unit

the metal locating tabs on the chassis.Notes on reinstalling:

q Before tightening the screws, ensure that the are in place.

WARNING! Release the safety catches only after tightening the

the VTU to the chassis.

Right cover

1 Remove the vertical transfer unit (VTU) (see p

2 Remove the 2 screws near the middle of the r1).



2

the upper-left corner of the cover (callout 2).

4 Carefully pull out on the top of the cover whileclear the retaining tabs that are along the cov


q Make sure the retaining tabs that are along thedge are placed over the chassis rail.

Tray 4

1 Open tray 4 and remove any paper.

2 Remove the vertical transfer unit (VTU) (see p

3 Remove the left and right covers (see page 2

4 Remove 1 screw and 1 metal retaining tab frochassis (callout 1).



1

Paper pick-up assembly

The paper pick-up assembly is located on the righ

1 Remove the VTU (see page 275).

2 Remove the right cover (see page 276).



2



Controller PCA

The controller PCA is located on the back of the u

1 Remove the back and left covers (see page 2


1 24

5



Figure 148. Controller PCA


q Ensure that the DIP switches on the PCA are Setting (off) (callout 5). For information on DIPsee page 430.

Front LED PCA assembly

1 Open tray 4 halfway to the stops.2 On the upper-left corner of the front of the cha

screw (callout 1).

1



Figure 149. Screw on front LED PCA assembly

Figure 150. Front LED PCA

5 Unplug the LED PCA from the connector.

Power supply

1 Unplug the power cord and the C-link interfac

2,000-sheet input unit.2 Remove the back and left covers (see page 2

2




2

1


5 Lift the power supply upward to clear the locaunderneath, and then slide it to the left to free

Main drive assembly

1 Remove the back cover (see page 273).

2 Unplug 1 connector from the controller PCA (

1

2



Figure 152. Main drive assembly

3 Release 2 cable stays.

Paper size sensor assemblies

There are two paper size sensor assemblies: the assembly and the paper size switch assembly.

Removing the quantity switch assemb



1

2

3



Removing the paper size switch assem

1 Remove the back cover (see page 273).2 Unplug 1 connector from the controller PCA (

3

1

2



Figure 154. Paper size switch assembly

3 Remove 1 screw (callout 2) and the metal reta3) that hold the assembly in place.

Tension springs

1 Remove the left cover (see page 274).


3 Inside the tray, remove 1 spring on the left runthe right runner (callout 1).



Figure 155. Tension springs

Multi-bin mailbox

The following covers and assemblies can be remobin mailbox:

Hint Place the multi-bin mailbox on a table for ease in

q front, back, and top covers

q power supply

q paper bins and blind coverq flipper assembly

q delivery head position motor

q transport belt motor

q input paper guide

q metallic tape and housingassembly

q controller

q anti-curl st

q delivery heq interlock s

q diagnostic

q user statu

q attachmen



Front and back covers

1 Remove the multi-bin mailbox from the printer

2 For each cover, use a small flat-blade screwd3 retaining tabs that secure the cover to the fr

1



Figure 156. Front and back covers

3 Rotate the cover outward to release it from th

Top cover

1 Remove the front and back covers (see page

2 Disconnect the cable from the LED PCA (callofront side of the frame).

3

2



Figure 157. Top cover

3 Remove 1 screw that secures the LED PCA t(callout 2).

4 Remove 2 screws close to the upper-right sid

5 Slide the top cover to the left side of the unit, t

Power supply


2

1



Figure 158. Power supply

2 Press the plastic retaining tabs on each side o

to remove it (callout 2).

Paper bins and blind cover

The procedure for removing the paper bins and thsame. Each bin rests in its labeled slot.

1 Remove the face-up bin first. Lift the outer edgthe retaining notch in the frame, and then pullthe frame.

2 Remove the blind cover.



Figure 159. Paper bins

3 Remove each face-down bin, starting at the todown in sequence.

Flipper assembly

1 Remove all paper bins and the blind cover (se

2 Remove the front, back, and top covers (see ppage 288).

3 Remove 2 screws closest to the upper-left sid

1

2



Figure 160. Flipper assembly (1 of 3)

4 Hold down the jam access door and unplug th(callout 2) that runs from the input paper guidmotor.

Figure 161. Flipper assembly (2 of 3)

5 Unplug 3 connectors (figure 160, callout 3).

6 Use a flat-blade screwdriver to release the plathat secures the assembly to the top of the fra

3



5

CAUTION Do not over-tighten the screws that secure the flip

multi-bin mailbox frame. The nuts in the flipper asstheir slots.

Delivery head position motor

1 Remove the back cover (see page 287).2 Unplug 1 connector (callout 1).

2



Figure 163. Delivery head motor

3 Remove 2 screws from the motor (callout 2).

1

Transport belt motor



3 Release the controller PCA assembly from thframe (see page 299, steps 1 through 7).

4 Unplug the J8 connector on the multi-bin mai(callout 1).

2

1



Figure 164. Transport belt motor

5 Remove 2 screws (and washers) on the trans


q Reroute the cable on the transport belt motor cable, and connect it to the J8 connector on thcontroller PCA (callout 1).

q Replace the internal drive belt onto the gear omotor before replacing the screws that secureframe.

Input paper guide

1 Remove the multi-bin mailbox from the printer

2 Remove the face-up bin and the blind cover (s

3 Hold down the jam access door while unplugg(callout 1).

2



4 Use a flat-blade screwdriver to release the rettop of the input paper guide (callout 2).

Figure 166. Input paper guide (2 of 2)

2



5 Pull the input paper guide free of the frame wground wire through the wire access hole (ca

Metallic tape and housing assem


WARNING! The sharp edges of the metal tape can cause serrewinding the metal tape into its housing, hold therewind it slowly.

2 With the delivery head assembly at the top of mailbox, hold the metal tape near the end, anthe retainer tab that secures the end of the taframe (callout 1). Then let the tape slowly rew

1



2

5 Use a flat-blade screwdriver to release the plalocated on each side of the tape housing (call

Figure 168. Metallic tape and housing assembly (2 of 2)

6 G tl ll th d li h d bl t

4

3



6 Gently pull on the delivery head assembly to rthe tape from behind the rollers (callout 4).

7 Pull the tape housing toward you to remove itNotes on reinstalling:

q Thread the end of the metal tape behind the rand then pull the end of the tape to the top of mailbox and reinsert it into place (callout 1).

q Use the guide pins to reinstall the tape housin

Controller PCA

1 Disconnect the power cable (callout 1).

Figure 169 Controller PCA (1 of 2)

3

2 1



Figure 169. Controller PCA (1 of 2)

2 Disconnect the C-link cable (callout 2).


4 Carefully lay the multi-bin mailbox on its front

5 Loosen 1 grounding screw and 2 self-tapping side of the PCA cover (callout 3).

6 Remove 2 self-tapping screws and the ground

8 Unplug 8 connectors (callout 5) and remove t

Figure 170. Controller PCA (2 of 2)

5



Anti-curl strings


2 Remove all the paper bins and the blind cove

3 On the lower-left side of the frame, remove 2 stension springs (callout 1).

2

1



Figure 171. Anti-curl strings (1 of 2)

4 Remove the anti-curl strings from the lower p

5 Remove the delivery head assembly (see pag

2

6 Release the upper ends of the anti-curl stringaccess door by pushing the retaining tabs tha

to the door (callout 3).

Figure 172. Anti-curl strings (2 of 2)

3



Delivery head assembly



WARNING! The sharp edges of the metal tape can cause serrewinding the metal tape into its housing, hold the

rewind it slowly.

3 With the delivery head assembly at the top of mailbox, hold the metal tape near the end, anretainer tab that secures the end of the tape tframe (callout 1). Then let the tape slowly rew

1



Figure 173. Delivery head assembly (1 of 4)

4 Remove the anticurl strings (see page 301).

5 Release the flat ribbon cable from the cable cgently disconnect the cable (callout 3).


6 Raise the assembly to the top of the frame.

2 3



y p

7 Hold up the assembly and remove 2 screws (

4

Note The screw that secures the back end is captive.

8 Rotate the assembly clockwise while guiding its access opening (see figure 176).

9 Release the anti-curl strings from the pulleys assembly (callout 5).

5





q When reinstalling the assembly onto its elevathat the locating pins are in place.

Interlock switch


CAUTION Before removing the wires from the multi-bin mailbnote the location of each wire. Replacing the wiredamage the interlock switch.

2 Disconnect 2 wires from the switch (callout 1)

Fi 177 I l k i h

2 1



Figure 177. Interlock switch

3 Press the 2 retaining tabs together to remove(callout 2).

Diagnostic LED PCA



1 2



Figure 178. Diagnostic LED PCA


4 Pull the PCA away from the frame.

User status LED PCA

1 Remove the front cover (see page 287).

2 Disconnect the cable from the PCA (callout 1)

Figure 179. User status LED PCA


4 Pull the PCA away from the frame.



Attachment assembly

1 Remove the controller PCA, but leave cables page 299).

2 Set the controller PCA on top of the unit (callo

1



Figure 180. Attachment assembly

3 Remove the e-ring (callout 2).

4 Release the pivot pin that holds the attachmethe frame.

5 Remove the assembly.



7 Troubleshooting

Chapter contents

Pre-troubleshooting checklist . . . . . . . . . . . . . . . Printer message troubleshooting. . . . . . . . . . . . . .

Aids to troubleshooting . . . . . . . . . . . . . . . . . . . . .

Configuration page . . . . . . . . . . . . . . . . . .

Continuous configuration page . . . . . . . . .

Demonstration page . . . . . . . . . . . . . . . . . Event log . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service mode engine diagnostics . . . . . . .

Disabling interlocks . . . . . . . . . . . . . . . . . . .

S i d f tt di ti



Service mode formatter diagnostics . . . . .

Cold reset . . . . . . . . . . . . . . . . . . . . . . . . .

Fault log. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paper path troubleshooting . . . . . . . . . . . . . . . . .

General paper path checklist . . . . . . . . . . .

Wrinkled pages . . . . . . . . . . . . . . . . . . . . . .

Sealed envelopes

Image defects troubleshooting . . . . . . . . . . . . . .

Image orientation. . . . . . . . . . . . . . . . . . . . .

Image defect examples . . . . . . . . . . . . . . .

Incorrect registration (late and early print).

Image skew . . . . . . . . . . . . . . . . . . . . . . . .

Blank or partially blank page . . . . . . . . . . .

Horizontal streaks (in one color) . . . . . . . .

Horizontal streaks (in all colors, CMYK) . .

Rain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Speckled print . . . . . . . . . . . . . . . . . . . . . . .

Smeared print . . . . . . . . . . . . . . . . . . . . . .

Print on back of page (non-duplexed page)

Poor fusing. . . . . . . . . . . . . . . . . . . . . . . . . .

Ghosting . . . . . . . . . . . . . . . . . . . . . . . . . . .

Black, brown, or orange bands . . . . . . . . .

Background toner scatter. . . . . . . . . . . . . .

Yellow or black streaks. . . . . . . . . . . . . . . . .

Mottled process colors or poor transfer . . . Faint print. . . . . . . . . . . . . . . . . . . . . . . . . .

Stray toner . . . . . . . . . . . . . . . . . . . . . . . . .

Banding (less than 10 mm) . . . . . . . . . . . . .



Banding (14 mm) . . . . . . . . . . . . . . . . . . . .

Overhead transparency defects. . . . . . . . . Dark yellow print or contaminated print . . .

Color balance adjustment . . . . . . . . . . . . . . . . . . .

Repetitive defects troubleshooting . . . . . . . . . . .

Color developer roller . . . . . . . . . . . . . . . .

Charging roller . . . . . . . . . . . . . . . . . . . . . .

Black developer roller . . . . . . . . . . . . . . . .

Cleaning roller . . . . . . . . . . . . . . . . . . . . . . .

Developer DSD wheels . . . . . . . . . . . . . . . .

Transfer roller . . . . . . . . . . . . . . . . . . . . . . . .

Transfer drum. . . . . . . . . . . . . . . . . . . . . . .

Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Imaging drum. . . . . . . . . . . . . . . . . . . . . . .

Transfer belt . . . . . . . . . . . . . . . . . . . . . . . . .

2,000-sheet input unit troubleshooting . . . . . . . .

Ways to troubleshoot the unit . . . . . . . . . .

Status LED descriptions . . . . . . . . . . . . . .

Service LED descriptions . . . . . . . . . . . . . .

Standalone running test. . . . . . . . . . . . . . .

Motor test. . . . . . . . . . . . . . . . . . . . . . . . . .

Sensor test . . . . . . . . . . . . . . . . . . . . . . . . Multi-bin mailbox troubleshooting . . . . . . . . . . . .

Switching the multi-bin mailbox to test mode

Power-up sequence test . . . . . . . . . . . . . .



Paper path test . . . . . . . . . . . . . . . . . . . . . .

Multi-bin mailbox LED descriptions . . . . . . Communications troubleshooting . . . . . . . . . . . .

HP network interface support . . . . . . . . . .

Third-party network interface support . . . .

Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Pre-troubleshooting checklist

Before troubleshooting any specific printer proble

z The failure is associated with the printer befortroubleshooting by removing the printer from t

z The printer is being powered off with the poweunplugging the printer to ensure the cooling fa

entire cycle.z Any overdue maintenance is performed.

z The maintenance units are within their rated l

Note The customer is responsible for ensuring that the itconsumable kits are in good condition.

z The printer has been maintained on a regularin chapter 4. Note the location of spilled or acbefore troubleshooting. Toner contamination mventilation or printer environment problems.

z The customer is using supported media.

z The operating environment is within the specilisted in chapter 1 of this manual.

z The printer is not exposed to ammonia gas suby diazo copiers or office cleaning materials.

Th i t i d t di t li ht



z The printer is never exposed to direct sunlight

z The media is stored correctly and within envirz The printer is installed on a solid, level surfac

z The line voltage does not vary more than 20%rated value specified on the Power Rating Labproblem if large motors are used near the prinmight cause temporary voltage changes.

Printer message troubleshooting

This section contains explanations and recommenmessages that appear on the printer control pane

z Numbered messages — Table 39 (beginning

z Unnumbered messages (in alphabetical or(beginning on page 334)

Note The action field for each control panel message deresolve the message. Each step is a self-containemessage; however, the steps should be followed i

Table 39. Numbered printer messages

**************** Event log message: None

Description:

Displayed during startup as the individual tasksbegin initializing and during a low-level self-test.A character other than (*) indicates an error hasoccurred.

Action:

No action is required.

20 INSUFFICIENT MEMORY Event log message: 20.00.

Description:

More data has been received from the computerthan fits in the printer’s internal memory.

Action:

No action is required. Only tfits in the printer’s internal m



p y pIf this error occurs frequently

print jobs are often sent to thmemory to the printer.

22 EIO <n> BUFFEROVERFLOW

Event log message: 22.00.

Description:

The EIO buffer has overflowed during a busy state.This might happen if several complex jobs are sent

Action:

No action is required. The cubuffer will be lost

22 PARALLEL I/OBUFFER OVERFLOW


Description:

Indicates the parallel buffer has overflowed. Thismight happen if several complex jobs are sentsimultaneously via the parallel port and are largerthan the overflow will allow.

Action:

No action is required. The cubuffer will be lost.

40.<n> HP EIO ERROR Event log message: 40.00.

Description:

An EIO accessory connection has been abnormallybroken while transferring data from the computer tothe printer.

<n> = EIO slot number

1 = Bottom EIO slot2 = Top EIO slot

Action:

1 Print an EIO configuratthe EIO accessories ar

2 Check that all cables arports and that the EIO properly.

3 Turn the printer off and

4 If possible, print to anoverify the network is wo

All data in the print buffer wi

41.2 PRINTER ERROR Event log message: 41.00.

Description:Indicates that a beam detect laser scanner errorhas occurred on the previous page. The page willreprint and continue.

Action:1 Open and close the fro

remove any remaining


3 Reconnect connector JPCA and connector J2

Table 39. Numbered printer messages (continued)



C a d co ecto Jboard.

4 Reconnect connector Jrelay connector J40, anthe controller board.

5 Measure the voltage ac(+5 V) and J211-3 (GNboard after the printer ivoltage is 5 V, replace

41.3 UNEXPECTEDPAPER SIZELOAD TRAY 1<width> <length>


Description:

Tray 1 is configured for a specific media size, butthe printer detects a different size being fed from

tray 1. For example, the printer was expecting aletter-sized page but detected that an 11-by-17inch-sized page was fed instead.

<width> = Media width specified in the printer driveror application<length> = Media length specified in the printerdriver or application

Action:

1 Verify the correct size pis loaded in tray 1.

2 Verify the paper guides

3 Load the requested sizpress GO to print on the

4 Verify that the media wpaper guides are worki

5 Reconnect connector Jwidth detection PCA, reconnector J208 on the

6 Replace the tray 1 pick

41.5 UNEXPECTEDPAPER TYPELOAD TRAY <x><type> <size>


Description:

The printer was expecting one type of media to befed from an input tray and a different type was fed.For example, the printer was expectingtransparencies and plain paper was fed.

Action:

1 Open and close the fropage from the printer.

2 Verify that the correct minput tray and the printe

fi d tl




<x> = Input tray number (2, 3, or 4)

<type> = Media type specified in the printer driver orapplication<size> = Media size specified in the printer driver orapplication

Note: The size error in this message applies only totray 1.

configured correctly.

3 Clean the detection win1 and 2.

4 Reconnect connectors OHT sensors 1 and 2, controller board, and re

5 Replace OHT sensors

6 Replace the controller

50.1 FUSER ERRORCYCLE POWER


Description:

Indicates that a low temperature error has occurredin the fuser.

Action:

1 Verify the fuser is compprinter.


3 Turn the printer off andMeasure the resistanceconnectors J26F-A4 (F(GND). If it is not in the600 kOhms (room tempwiring from the conneccontroller board up to tthe wiring is normal, re

4 Reconnect connector Jboard and connector J2

5 Replace the fuser kit.

6 Replace the power sup



Description:Indicates that a warmup error has occurred in thefuser.

Action:



3 Check for media jams i

4 Replace the fuser kit







Description:

Indicates that a high temperature error has occurredin the fuser. This error is saved in the controllerboard by an electrical charge in capacitor C259.

Action:


2 Turn the printer off andblade of a screwdriver



Description:

Indicates that a fuser drive or power unit error hasoccurred in the fuser.

Action:







Description:

Indicates that a heater error has occurred in thefuser.

Action:



3 Reconnect connector Jboard, connector J26 oconnector J101 on the




51 LASER ERRORCYCLE POWER


Description:

Indicates that a laser malfunction has occurred.Action:






2 Reconnect connector JPCA and connector J2board.

3 Reconnect connector JPCA, relay connector Jon the controller board

4 Replace the laser/scan

52 SCANNER ERRORCYCLE POWER


Description:

Indicates that the scanner motor is not turningproperly.

Action:


2 Reconnect connector Jmotor PCA, relay connconnector J211 on the

3 Measure the voltage acB11 (+24UH) and J647relay PCA after the prinvoltage is not 24 V, rep

4 Measure the voltage ac(SCND) and J211-6 (Gboard after the printer i

voltage changes from 0replace the laser/scann

5 Replace the laser/scan





53.<x><y>.<zz> ERRORDIMM SLOT <n>

Event log message: 53.<x>

Description:

Indicates that a memory error occurred during theconfiguration and validation of DIMM memory.

<x> = Hardware type:

0 = ROM

1 = RAM2 = Font DIMM

<y> = Hardware device:

0 = Onboard ROM/RAM1 = DIMM slot 12 = DIMM slot 23 = DIMM slot 3

4 = DIMM slot 45 = DIMM slot 56 = DIMM slot 67 = DIMM slot 78 = DIMM slot 8

Action:

1 Verify that the DIMM bocorrectly and the DIMMcorrectly. DRAM DIMMsynchronous pairs in adsame size and speed inSDRAM is supported.


3 Remove and replace ththe error.

For more information about page 93.

<zz> = Error:

00 = Unsupported memory01 = Unrecognized memory02 = Unsupported memory size03 = Failed RAM test04 = Exceeded maximum RAM size05 = Exceeded maximum ROM size06 = Invalid DIMM speed, check DRAM07 = DIMM is reporting incorrect checksums10 = DIMM address




10 DIMM address11 = PDC XROM out of bounds12 = Could not make temporary mapping13 = Invalid RAM type14 = DIMM not paired properly15 = Bad firmware upgrade DIMM checksum16 = More than one set of firmware upgrade DIMMs17 = Not enough DRAM to run

EIO l t b

54.1 TEMPERATURESENSOR ERRORCYCLE POWER


Description:

Indicates that the temperature/humidity sensor inthe printer has malfunctioned. The temperature/ humidity sensor is located below tray 2.

Action:

1 Reconnect connector Jconnector J55 on the tesensor, and connector

board.2 Replace the cassette c

which includes the temsensor.


54.2 CAROUSEL ERRORCYCLE POWER


Description:

Indicates that the color toner carousel is not workingcorrectly. This could be caused by an obstruction inthe carousel path, such as a loose shutter ordisengaged toner cartridge.

Action:


2 Open the carousel dooLook for an obstructioncartridge shutter catchitray. Verify the toner loc

the message does not doors, turn the printer oprinter.

3 Clean the carousel poscompressed air. If the preplace the sensor.

4 Reconnect connector J




PCA; connectors J641

on the main relay PCAsubrelay PCA; and conpower supply.

5 Check operation of theReplace the carousel s

6 Check electrical continJ641-1 (+24 VB) and J

(54.2 CAROUSEL ERRORCYCLE POWER, continued)

8 Check electrical contin

J642-1 (PYMC) and J6subrelay PCA when theis turned on. If there is replace the toner cartrisubrelay PCA.

9 Check electrical continJ642-1 (PYMC) and J6main relay PCA when t(SW642) is turned on. continuity, replace the m

10 Measure the voltage ac(+24 VAR) and J648-3 relay PCA after the prinvoltage is not 24 V, repPCA.

11 Reconnect connectors carousel motor PCA, athe controller board.

12 Reconnect connector Jposition sensor, relay cconnector J207 on the

13 Measure the voltage ac

A6 (RLSROT) and J22controller board after ththe voltage changes to replace the carousel m

14 Replace the carousel m


54 3 DENSITY SENSOR ERROR E l 4 00




54.3 DENSITY SENSOR ERROR

CYCLE POWER


Description:

Indicates a density sensor error, or the printer is notreceiving data back from the density sensor.

Action:


2 Clean the density sens

3 Reconnect connector JPCA i t di

55 PRINTER ERRORCYCLE POWER


Description:

Indicates a printer command error. The commandscannot be exchanged between the printer and itscontroller.

Action:


2 Verify the controller boa

56.1 ERROR

CYCLE POWER


Description:

Indicates an input feed error (such as requesting tofeed transparencies through the duplexer), or theinput tray is not installed.

Action:

1 If the input tray you arenot installed, install the


56.2 ERROR

CYCLE POWER


Description:

Indicates an illegal output error. For example, themulti-bin mailbox is not installed and it was selectedas the output destination, or there aretransparencies in the duplexer.

Action:

1 Open the printer and repaper path.

2 Verify that the media tycontrol panel.





57.1 FAN FAILURE Event log message: 57.00.

Description:

One of the cooling fans failed or is obstructed.

1 = Fan 1 (FM 1)

Action:

Caution: Turn the printer o

the printer in this conditio

seriously damaged.


2 Reconnect connectors carousel motor PCA, athe controller board.

3 Reconnect connector Jmotor PCA, connectorsmain relay PCA, and coDC power supply.


and J701-2 (GND) on tafter the printer is turnechanges from 0 V to 24

5 Measure the voltage ac(+24 VB) and J701-2 (Gmotor PCA after the prvoltage is about 24 V, r

motor.6 Measure the voltage ac

(+24 VB) and J641-4 (GPCA after the printer isvoltage is not 24 V, repPCA.

7 Check the AC power su




8 If the problem is not recturned off and on againactivation of the overcudetection circuit in the pmore than two minutespower back on.



Description:

One of the cooling fans failed or is obstructed.

2 = Fan 2 (FM 2)

Action:



seriously damaged.


2 Reconnect connectors carousel motor PCA anthe controller board.

3 Reconnect connector Jmotor PCA, connector PCA, and connector J1supply.


(FAN2ON) and J703-1 motor PCA after the prvoltage changes from 02.

5 Measure the voltage ac(+24 VB) and J701-2 (Gmotor PCA after the pr

voltage is about 24 V, rmotor.

6 Measure the voltage ac(+24 VB) and J641-4 (GPCA after the printer isvoltage is 24 V, replace





8 If the problem is not recturned off and on againactivation of the overcudetection circuit in the pmore than two minutesprinter back on.



Description:

One of the cooling fans failed.

3 = Fan 3 (FM 3)

Action:



seriously damaged.


2 Reconnect connectors main relay PCA, J18 anconnectors, and connecontroller board.

3 Reconnect connector JPCA, and connector J1supply.


and J645-1 (GND) on ththe printer is turned onfrom 0 V to 24 V, replac

5 Measure the voltage ac(+24 VB) and J641-4 (GPCA after the printer isvoltage is not 24 V, repPCA.

6 Measure the voltage ac(-24 VB) and J641-4 (GPCA after the printer isvoltage is not 24 V, repPCA.





8 If the problem is not recturned off and on againactivation of the overcudetection circuit in the pmore than two minutesprinter back on.


59.<x> MOTOR ERROR

CYCLE POWER


Description:

Indicates that the main motor (M4) is not workingproperly.

<x> = Description:

0 = General error

1 = Startup error2 = Rotation error

Action:


2 Reconnect connector Jconnector J1 on the co

3 Replace the main moto

4 Reconnect connectorson the main relay PCAJ673 on the subrelay Pthe power supply, and controller board.

5 Check electrical continJ641-1 (+24 VB) and J

main relay PCA when t(SW641) is turned on. continuity, replace the m

6 Check electrical continJ671-2 (PMP) and J67subrelay PCA when theis turned on. If there is replace the subrelay PC

7 Measure the voltage acB11 (+24 UH) and J647relay PCA after the prinvoltage is not 24 V, repPCA.


Event log message: 62 00




62.<x> SERVICECYCLE POWER


Description:

Indicates that a problem exists with the internalmemory.

<x> = Description:

Action:


2 Perform DRAM DIMM tdiagnostics in the Serv

64 PRINTER ERROR

CYCLE POWER


Description:

Indicates a scan buffer error.Action:

Turn the printer off and on to

65 PRINTER ERRORCYCLE POWER


Description:Indicates a DRAM controller error. Action:1 Turn the printer off and

2 Perform DRAM DIMM tdiagnostics in the Serv

3 If the problem persists,

66.<x>0.<yy> C-LINK

COMM ERRORCHECK CABLESAND CYCLE POWER

Event log message: None

Description:

Indicates a communication error between the2,000-sheet input unit or the multi-bin mailbox andthe printer.

<x> = Device number in the link<yy> = Error code from the optional device

Action:

1 Verify that the C-link anconnected.


66.11.01 INPUTDEVICE FAILURECHECK CABLESAND CYCLE POWER





Description:

Indicates a 2,000-sheet input unit liftingmotor error.

Action:

1 Verify that the c-link anconnected.


3 Verify that there are no in the left side of the tra

66.11.02 INPUT

DEVICE FAILURECHECK CABLESAND CYCLE POWER


Description:

Indicates a 2,000-sheet input unit feedmotor error.

Action:


2 Turn the printer off and3 Verify that there are no

of the tray.

4 Verify that the paper trais working properly (pe

5 Check for proper instalroller.

6 Check the pick-up assedeck drive assembly ca

7 Replace the pick-up as

8 Replace the paper dec

66.11.03 INPUTDEVICE FAILURE

CHECK CABLESAND CYCLE POWER


Description:

Indicates a 2,000-sheet input unit lifting andfeed motor error.

Action:






3 Verify that there are noof the tray.

4 Verify that the lifting plahand.

5 Verify that the paper sizcorrectly, and that they

66.22.08 OUTPUT



Description:

Indicates a multi-bin mailbox flipper motor error.Action:


2 Turn the printer off and3 Check for jams in the f

4 Replace the flipper ass

5 Replace the multi-bin mPCA.

66.22.09 OUTPUT



Description:

Indicates a multi-bin mailbox external memoryerror.

Action:


2 Turn the printer off and3 Replace the multi-bin m

PCA.

66.22.<xx> OUTPUTDEVICE FAILURECHECK CABLESAND CYCLE POWER

Event log message: 66.22




AND CYCLE POWER

Description:

Indicates a multi-bin mailbox error.

<xx> = Error code from the optional device

Action:



3 Replace the C-link cab

68 NVRAM ERROR

SETTINGS CHANGED


Description:

Indicates that a recoverable error has beendetected in the NVRAM (nonvolatile random-accessmemory). Values for some NVRAM settings werefound to be illegitimate in form and were set back totheir default value.

Action:

1 Verify the printer contromore fields have been defaults during the erro

2 Perform a factory defau

3 Perform a cold reset (s

68 NVRAM FULLSETTINGS LOST


Description:

Indicates that the NVRAM is full, and the printer isunable to write new data to the NVRAM.

Action:

Verify the printer control panmore fields might have been

defaults during error recoverprinter is turned off and on, and all factory defaults will b

79 SERVICE <xxxx>CYCLE POWER

Event log message: 79.<xx

Description:

The firmware has detected a hardware failure within

the formatter. This failure can be caused bydefective EIO devices and communication ports

<xxxx> Description

01<xx> = IO ASIC register error02<xx> = Video ASIC register error03<xx> = IDE ASIC register error

Action:

1 Turn the printer off. Discommunication cables the printer back on.

2 Run extended formatteService Mode Menu to

3 If the problem persists communications conneformatter board.




Table 40. Unnumbered printer messages

ACCESS DENIED Event log message: None

Description:

A user has attempted to select a menu value whileprinter control panel locking is enabled.

Action:

See the system administratoprinter control panel. If it is nthe password, perform a colfor information on performin

CALIBRATING Event log message: None

Description:

The printer is adjusting the print density (seepage 148 for more information).

Action:


Note: It might take five to sixto complete the calibration.

CANCELING JOB Event log message: None

Description:

The printer is canceling the current print job.Action:


CHECK CONTROLPANEL SETTINGS


Description:

Indicates that the page might not be printingbecause the control panel setting for media typeand/or size does not match the media in the tray.

Action:

See page 91 for informationtype and size for each input

CHECK TRAY 1PAPER GUIDES


Description:

The width of the paper guides does not match theAction:

Adjust the media width guide



size of the media selected for the print job. page. Ensure the media size job is the same as the size otray 1.

CLEAN DENSITY SENSOR

CYCLE POWER


<x> = Description:

5 = Sensor abnormality6 = Out of range cyan7 = Out of range magenta8 = Out of range yellow9 = Out of range black

Description:

The density sensor values are out of range orinconsistent. The density sensor might be dirty orthe transfer drum might be damaged. A defectivetoner cartridge could cause this error as well.

Action:

1 Verify the right upper dway.

2 Clean the density sens


4 Clean the transfer drumcleaning the printer, se

5 If the problem persists ifaulty toner cartridge.

6 Replace the density se

CLEAR DUPLEX JAMLOWER LEFT DOOR


<x> = Description:

7 = Two-sided turn around p

8 = Two-sided turn around p9 = Two-sided path paper la

Description:

The printer senses a media jam in the duplexer.Action:

1 Open the left lower covduplexer, remove the jathe duplexer, and close

2 The fusing assembly a

Table 40. Unnumbered printer messages (continued)



g ycan also cause duplex Verify their operation.

3 Open the left lower covdelivery cover interlockthe paper exit and entrasensor monitor test froMenu verify sensors 8

CLEAR FUSER JAM

LOWER LEFT DOOR


<x> = Description:

3 = Fusing delivery paper de4 = Fusing delivery stationa

Description:

The printer senses a media jam in the fuser area.The printer expected a page to come through thefuser, but the paper has not toggled PS1903, orPS1903 has been toggled an extended amount oftime.

See table 42 on page 381 for an explanation ofpaper jam detection details.

Action:

WARNING! Do not touch thhot and could cause burns.

1 Open the left lower covmedia, and close the le

2 On the left side of the fexit flag and the reflectthat the sensor (PS190

3 Perform the sensor moMode Menu. Toggle PSmake sure that sensor panel indicates 1 (on) w

CLEAR INPUTDEVICE JAM

Description:There is a jam in the 2,000-sheet input tray.


<x> Description:

1 = Time-out at paper entry

B = Time-out at paper exit s

Action:

1 Open the vertical transremove any media.

2 Verify that the paper enmoves freely.




3 Verify that the feed, seprollers are properly sea

4 If the problem persists,override the VTU closePerform a paper path te2,000-sheet input unit, rollers are advancing th

CLEAR INPUT

DEVICE JAM (continued)


<x> Description:

1 = Page stays too long at p(PS31)

B = Page stays too long at p

Action:

1 Open the vertical trans

remove any media.2 Verify that the paper en

moves freely.

3 Verify that the feed, seprollers are properly sea

4 If the problem persists,override the VTU close

Perform a paper path te2,000-sheet input unit, rollers are advancing thnot rotate, verify the coassembly and the contsheet input unit.

5 If the rollers rotate and advance the paper, rep

separation rollers using6 If the rollers do not rota

replace the pickup asse

7 If the problem persists, includes PS31.





<x> Description:

1 = At power on, paper entryis active

B = At power on, paper exit sactive

Action:

CLEAR INPUT JAM Event log message: None

Description:

The printer senses a media jam in the transfer orregistration area, in an input tray, or in the duplexer.

Action:

1 Open the front door, prthe lower (green) lever,the right. Open the righthe transfer drum, and media from under the mReinstall the transfer d

upper door. Swing the the left, and close the f

2 Open each input tray, rmedia, and close the in

3 Open the left lower covduplexer, remove the jathe duplexer, and close

4 Check the entire paper

CLEARMAILBOX JAM

Description:

The printer senses a media jam in the multi-binmailbox.


Action:

1 Open the jam access dmedia.

2 Verify that the left (facesensor (PSFaceFull) fla

3 Verify that the flipper sh

4 Replace the flipper ass






Action:

1 Check for a jam at the delivery head assembly

2 Ensure free movement belts).

(CLEAR

MAILBOX JAM, continued)


Action:

1 Check for a jam in the d

2 Ensure free movementflags on the delivery he

3 Verify that the delivery the ejector rollers on th

assembly.4 Replace the flat ribbon

the delivery head asseboard PCA.


6 Replace the delivery he


Action:

1 Check for a jam in the d

2 Ensure free movementflags on the delivery he

3 Verify that the delivery the ejector rollers on thassembly.

4 Replace the flat ribbon the delivery head asseboard PCA.





6 Replace the delivery he

CLEAR OUTPUT JAMUPPER LEFT DOOR


<x> = Description:

5 = Delivery paper delay jam6 = Delivery stationary jam

CLEAR PAPER JAM Event log message: 13.00.

Description:

The printer senses a media jam. Since this is ageneric media jam message, the media might be atany point in the paper path.

Action:

1 Open and shut the fronclear any media from thcheck the fuser area bewrapped around the fufind.

2 Check all areas of the pmedia since the printerthe location of the med

3 Perform sensor monitoMode Menu to verify alare functioning properly

jam.

CLEAR TRANSFERJAM


Description:

The printer senses a media jam in the transfer drumarea when media has not reached PS5. In somecases the media might wrap around the transferdrum and become lodged near the imaging drum.

See table 42 on page 381 for an explanation ofpaper jam detection sensors.

Action:

Open the right upper door, rdrum, remove the jammed mtransfer drum, and close the

CLEAR TRAY 4 JAM Event log message: None

Description:

The printer senses a media jam in tray 4.Action:

Open tray 4 and the vertical remove the jammed media,

CLEAR UNEXPECTED Event log message: 13 00




CLEAR UNEXPECTEDPAPER SIZE JAMTHEN LOAD TRAY 1<type> <size>


Description:

The printer senses a media jam in tray 1, or theAction:

1 Open the right upper do

CLEARING PAPER

FROM PRINTER


Description:

The printer is attempting to remove unusable media(such as a misfed page or media damaged in amedia jam).

Action:


CLOSE

<location> DOOR


Description:

The printer senses that one of the doors is notclosed properly.

<location> = A printer door

Action:

1 Close the door indicate

2 Check the function of thpage 370 for interlock l

COLD RESET Event log message: None

Description:

The printer has recognized the key sequence forperforming a cold reset. The printer will reset to thefactory default settings.

Note: Before performing a cold reset, print aconfiguration page as a reference for resetting theprinter settings. See page 361 for information onprinting a configuration page.

Action:

No action is required. For mfactory default settings, see beginning on page 68.

See page 376 for more inforcold reset.

CONFIG LANGUAGE Event log message: None

Description:

The printer has recognized the key sequence forselecting the display language.

Action:

Wait for the display languageselect the appropriate languinformation on selecting the

page 84




page 84.CONTINUOUS TESTPRESS CANCEL JOB


Description:

A continuous configuration page is printing.Action:

Press CANCEL JOB to exit theprintout mode. If the printer

DISK

DEVICE FAILURE


Description:

The printer hard disk’s internal self-test routine hasbeen invoked to read minimum and maximumlogical block addresses (with no retries) and hasdetected a failure. If access to the printer hard diskis not required, printer operation can continue.

Action:

Replace the printer hard dis

DISK FILEOPERATION FAILED


Description:

The printer has received an illogical PJL command(such as download to nonexistent directory).

Action:


DISK IS FULL Event log message: None

Description:

The printer hard disk is full.Action:

1 From the host computeprinter hard disk using disk management appl

2 To clear all data from threformat the printer harcontrol panel. To reform

disk:

a Press MENU until MENU appears on

b Press ITEM until INappears on the dis

c Press SELECT to r

disk




disk.DISK ISWRITE PROTECTED


Description:

A user has attempted to save to the printer harddisk while the printer hard disk is write-protected.

Action:

See the system administratoprinter hard disk.

DRUM LIFE LOW

REPLACE DRUM KIT


Description:

The imaging drum is almost past its specified life.Printing can continue; however, print quality mightbe degraded.

Action:

Although printing can continbe replaced for optimum prin

DRUM LIFE OUT

REPLACE DRUM KIT


Description:

The imaging drum is past its specified life or thewaste toner cartridge in the imaging drum is full.Printing cannot continue until the drum kit has beenreplaced.

Action:

1 Replace the drum kit.

2 Remove the drum cartrand clean the waste toa dry cloth.

3 Reconnect connector Jboard, and connectors connector J71 on the w

4 Reconnect connector Jconnectors J47 and J4board.

5 Replace the drum cartr

6 Replace the waste toneDUPLEX ERRORCHECK DUPLEXER


Description:

The printer has detected an error in the duplexer.Action:

1 Open the left lower covon the right side of the duplexer out of the prinremove any jammed m




remove any jammed mReinstall the duplexer.


3 Replace the duplexer.

EIO <n> Event log message: 40.00.

EIO <n>

NOT FUNCTIONAL

Event log message: 8<n>.

<xxx> = Failure code

Description:

Indicates an EIO card error, but printing cancontinue. The configuration page will indicate thatEIO <n> is not supported.

<n> = EIO slot number:

1 = Bottom EIO slot2 = Top EIO slot

Action:


2 Replace the offending

ENGINE TEST Event log message: None

Description:

The printer is running an internal test to verifyoperation. When the printer is finished, the printerreturns to the ready state but remains offline.

Action:

Press GO to bring the printe

FACE UPOUTPUT BIN FULL


Description:

The top output bin on the multi-bin mailbox is full.Action:

1 Remove all media fromthe multi-bin mailbox to

2 Check the functionalityFUSER LIFE LOWREPLACE KIT


Description:

The fuser and paper rollers are almost past theirspecified life.The fuser kit has approximately 1,000pages until the end-of-life warning will appear.

Action:

Although printing can continbe replaced for optimum prin

Replace the fuser kit and res




Replace the fuser kit and respressing SELECT before attethe RESETS menu on the p

FUSER LIFE OUTREPLACE KIT


D i ti A ti

INCORRECT FUSER

LOWER LEFT DOOR


Description:

The printer has detected that an incompatible fuser(possibly the wrong voltage of fuser for the printer)has been installed.

Action:

1 Remove the fuser and specified for use with thcannot continue until thinstalled in the printer. ordering a fuser kit, see

2 Reconnect connector Jboard and connector J2


INPUT DEVICEPAPER PATH OPEN


Description:

The vertical transfer unit (VTU) on the 2,000-sheetinput unit is open.

Action:

Close the VTU.

INSTALL <color> Event log message: None

Description:

The toner cartridge is either not installed, notcorrectly installed in the printer, or not being

detected by the cartridge sensor.<Color> = Cyan, magenta, yellow, or black

Caution: Use the blue button to rotate the carouselto prevent damage to the printer.

Action:

1 Insert the cartridge or mcartridge is correctly se

Note: The color toner cunless the following co

• The blue toner leve

• The clear door is cl

• The imaging drum i

• The black toner car

completely, includin




p y,seal from the black swinging the upper

• The right upper doo


3 If the cartridge is instal

(INSTALL <color>, continued) 6 Make sure that the blac

installed.• Install the black ton

installed.

• If the black toner cainstalled, turn the pblack toner cartridgon again.

7 Reconnect connectors main relay PCA, and copower supply.

8 Reconnect connector Jboard, and connector JPCA.

9 Check electrical continJ644-1 (PBK) and J644door switch (SW644) iselectrical continuity, repcartridge on/off switch.

10 Check the upper (blue)cartridge lever) on the pto the left. Replace the

11 Replace the black tone

deformed or damaged.12 Replace the remaining


INSTALL FUSERLOWER LEFT DOOR


Description:

The printer has detected that the fuser is notAction:

1 Install the fuser and ve




installed.1 Install the fuser and ve

correctly.

2 Reconnect connector J

3 Reconnect connector Jboard.

4 R l h ll

INSTALL IMAGING

DRUMOPEN FRONT DOOR


Description:

The printer has detected that the imaging drum isnot installed.

Note: All doors must be closed for the printer to

detect the imaging drum.

Action:

1 Install the imaging drumprint. If the condition pedrum out and reinstall i

Note: The imaging druthe upper lever must bethe carousel to rotate.


3 Replace the drum cartr

4 Replace the drum cartrcartridge on/off switch

5 Make sure that the dru

• Install the drum carinstalled.

• If the drum cartridgturn the printer off, cartridge, and turn t

6 Reconnect connectorson the main relay PCAJ673 on the subrelay Pthe power supply, and controller board.

7 Check electrical continJ641-1 (+24 VB) and Jmain relay PCA when t

(SW641) is turned on. continuity replace the r




continuity, replace the rmain relay PCA.

8 Check electrical continJ671-2 (PMP) and J67subrelay PCA when theis turned on. If there is

(INSTALL IMAGING

DRUMOPEN FRONT DOOR, continued)

11 Check the drum cartrid

on the printer. Set the lposition if it is disconneif it is cracked.

12 Reconnect connector Jconnectors J47 and J4board.


INSTALLTRANSFER DRUMOPEN RIGHT DOOR


Description:

The printer has detected that the transfer drum isnot installed.

Note: All doors must be closed for the printer todetect the transfer drum. If the right upper coverinterlock is defeated, this error will occur unless thedensity sensor is covered with paper.

Action:

1 Install the transfer drumprint.

2 Take the transfer drum3 Make sure that the tran

• If the transfer druminstall the transfer d

• If the transfer drum the printer off, verifythe correct position

again.4 Reconnect connector J

sensor PCA, intermediJ46, and connector J20board.

5 Measure the voltage ac(+24 VAR) and GND oPCA after the printer isvoltage is not about 24




sensor PCA.


LANGUAGE = <xxxx> Event log message: None

Description: Action:

LEFT

OUTPUT BIN FULL


Description:

The left (face-up) output bin on the printer is full.

Note: This message appears only if the optionalmulti-bin mailbox is installed.

Action:

Remove all media from the lof the printer to continue pri

LOCK TONER LEVER Event log message: None

Description:

The blue lever inside the clear door is not locked.Action:

1 Open the front door of clear door, and swing ton the carousel to the r

2 Remove the toner cartrit, making sure the cart

the printer.3 Swing the blue toner lo

to the left until it clicks, and front doors.

MAILBOXCOMM ERROR

CHECK CABLES

CYCLE POWER


Description:

Communication with the multi-bin mailbox has beenlost.

Action:

1 Verify all cables are co


MAILBOX <x>

OUTPUT BIN FULL






Description:

A mailbox in the multi-bin mailbox is full.

<x> = Mailbox 1 through 8

Action:

Remove all media from the mcontinue printing.

MAILBOX NOT Event log message: None

MANUALLY FEED

<type> <size>


Description:

The printer is requesting a sheet of media orenvelope to be manually fed.

<type> = Media type specified in the printer driver orapplication<size> = Media size specified in the printer driver orapplication

Action:

Load the requested media tyIf the proper media size is a1, press GO to initiate printin

MEMORY SHORTAGEPAGE SIMPLIFIED


Description:

The printer is compressing the print job so that all ofthe job will fit into the available printer memory. The

print job’s appearance might be altered by thecompression of the data.

Action:

1 If possible, simplify thethe resolution of graphi

2 Install more printer meinformation on printer mpage 445.

NO JOBTO CANCEL


Description:

CANCEL JOB was pressed and there is no job tocancel.

Action:


NO JOBSPENDING


Description:

While in the Proof and Print Menu, ITEM was

pressed and there are no pending proof and print jobs.

Action:





OFFLINE Event log message: None

Description:

The printer is offline.Action:

Press GO to bring the printe

OUT OF MEMORY

JOB CLEARED


Description:

The printer personality for the current job could notbe run in the available memory. The job wascanceled, and no pages were printed.

Action:

1 Reprint the job. If the mturn the printer off and before sending the prin

2 Install more printer meinformation on printer mpage 445.

PCL MEMORY FULLSTORED DATA LOST


Description:

The resource save area for the printer personality isfull. Fonts downloaded to the printer RAM might

have been deleted.

Action:


PJL OPERATIONSFAILED


Description:

The requested PJL operation could not becompleted because the option is unavailable or thePJL data was corrupt.

Action:


PLEASE WAIT Event log message: None

Description:

The printer is in the process of going offline or intothe menus.

Action:


POWERSAVE ON Event log message: None

Description:The printer is in Power Save mode. Power Save

Action:Clear this message by press




settings can be changed on the printer control panelthrough the Configuration Menu (see page 75). Note: This message will als

job is sent to the printer or ifdetected by the printer.

PRESS SELECT IF

FUSER IS NEW


Description:

The printer has detected that a new fuser mighthave been installed.

Note: This message will also occur if the printer isturned off and on and the internal fuser countindicates the fuser is near the end of its life, or thefuser door is opened. The message displays for 10seconds.

Action:

1 If the fuser has been reto reset the internal couclears before pressingbe reset in the RESETS

2 If the fuser has not bee

PRESS SELECT IFTRANSFER IS NEW


Description:

The printer has detected that a new transfer drum

might have been installed.

Note: This message will also occur if the printer isturned off and on and the internal transfer countindicates the transfer drum is near the end of its life,or the transfer door is opened. The messagedisplays for 10 seconds.

Action:

1 If the transfer drum hasSELECT to reset the intemessage clears beforevalue can be reset in th

2 If the transfer drum haspress GO.

PRESS SELECT TOINITIALIZE DISK


Description:

The printer hard disk is new or has been formattedfor another file system.

Action:

1 Press SELECT to reformAll data currently on thebe lost.

2 If you don’t want to initi

disk, wait until the messeconds) or press GO a




) pinitialized. This will rendfunctional, but the confithat the disk is installed

PRESS SELECT TO

LOSE DISK DATAPRESS GO KEYTO CANCEL


Description:

This is a request to confirm initialization of theprinter hard disk (see PRESS SELECT TOINITIALIZE DISK above). Initialization will perform a

high-level check of the disk and register the diskwith the disk manager software.

Action:

1 If you want to proceed SELECT.

2 If you don’t want to initidisk, wait until the messeconds) or press GO ainitialized. This will rendfunctional, but the confithat the disk is installed

PRINTER LANGUAGENOT AVAILABLEJOB CANCELED


Description:

PJL encountered a request for a printer personalitythat does not exist in the printer. The job wascanceled and no pages were printed.

Action:


PRINTING

CONFIGURATION


Description:

The printer is printing the configuration page. Whenthe configuration page is printed, the printer returnsto an online and ready state.

Action:


PRINTING

DEMONSTRATION






p

The printer is printing a demonstration page. Whenthe demonstration page is printed, the printerreturns to an online and ready state.


PRINTING Event log message: None

PRINTING

FILE DIRECTORY


Description:

The printer is printing the disk directory. When thefile directory is printed, the printer returns to anonline and ready state.

Action:


PRINTINGFONT LIST


Description:

The printer is printing the font list. When the font listis printed, the printer returns to an online and readystate.

Action:


PRINTINGMENU MAP


Description:

The printer is printing the menu map. When themenu map is printed, the printer returns to an onlineand ready state.

Action:


PROCESSINGCOPY <x> OF <y>


Description:The printer is processing a proof and print or mopyprint job.

<x> = Number of the copy in process<y> = Total number of copies

Action:No action is required.

PROCESSING JOB Event log message: None

Description:The printer is actively processing a print job.





p y p g p j q

PROCESSING JOBFROM TRAY <x>



PS MEMORY FULL

STORED DATA LOST


Description:

The resource save area for the printer personality isfull. Fonts downloaded to the printer RAM mighthave been deleted.

Action:


READY Event log message: None

Description:The printer is online and ready for data. No status orprinter attention messages are pending.


RESETTINGACTIVE IO


Description:

The printer is resetting active I/O ports.Action:


RESETTINGALL IO


Description:

The printer is resetting all I/O ports.Action:


RESTORING

FACTORY SETTINGS


Description:

The printer is resetting the printer’s factory defaults.The printer is in the process of completing a coldreset. When the reset is completed, the printerreturns to the ready state but remains offline.

Action:

Reset the EIO type and conbringing the printer online. Ffactory defaults and configupanel, see page 68.

SEPARATOR

OUTPUT BIN FULL






Description:

The multi-bin mailbox output bins are full.Action:

Remove all media from the obin mailbox to continue print

STACKEROUTPUT BIN FULL


TONER LOW

REPLACE <color>


Description:

The printer is almost out of the specified toner. Theprinter remains online and ready to print; however,the print quality might be degraded.

<color> = Cyan, magenta, yellow, or black

Action:

Although printing can continshould be replaced for optim

Note: Do not shake the toneto extend the cartridge life.

For more information on conresponse to this message, sthe TONER LOW setting on

TONER OUTREPLACE <color>


Description:

The printer is out of the specified toner and cannotcontinue.

<color> = Cyan, magenta, yellow, or black

Action:

1 Replace the toner cartr

2 Reconnect connector Jboard and connector J5converter 1 PCA.

3 Check the contact for rdetection on the black tcontact for remaining to

printer for deformation • Replace defective p

black toner cartridg

• Check the contactsdisconnected, returpositions.

4 Replace the high-voltag


TOO MANY FILE Event log message: None




TOO MANY FILESTORAGE DEVICESREMOVE EITHERDISK


TOP

OUTPUT BIN FULL


Description:

The top (face-down) output bin of the printer is full.Action:

1 Remove all media fromoutput bin on the printe

2 Verify that PS30, PS10sensors and the surrou

TRANSFER KIT LOWREPLACE KIT


Description:

The transfer drum, transfer belt, cleaning roller, andcharcoal filter are almost past their specified life.The transfer kit has approximately 750 color or1,000 black-and-white images left until the printer

will signal the end of the kit life.

Action:

Although printing can continshould be replaced for optim

Replace the transfer kit and

counter by pressing SELECTprint (or use the RESETS mcontrol panel).

TRANSFER KIT OUTREPLACE KIT


Description:

The transfer drum, transfer belt, cleaning roller, and

charcoal filter are past their specified life. If TONERLOW is set to continue, printing can continue withdegraded print quality; otherwise printing will behalted.

Action:

Replace the transfer kit and

counter by pressing SELECTprint (or use the RESETS mcontrol panel).

For more information on conresponse to this message, sthe TONER LOW setting on

TRAY 1 CONTAINSUNKNOWN MEDIAEvent log message: None




Description:

Media was stacked in tray 1 for continuous manualfeed printing, and the job has been completed.However, there is still media in the input tray. The

i t id th i t t t t b fi d

Action:

Configure the media type foremaining media.

F i f ti

TRAY 1 LOAD

<type> <size>


Description:

A user has requested a media size that is notcurrently installed in tray 1.

<type> = Last media type configured for the inputtray<size> = Last media size configured for the inputtray

Action:

Load the media type and sizprinter control panel display.the printer automatically brin

If the correct media type and1 and the media does not feethat the printer control pane(Cassette mode) match the requested.

TRAY 1 SIZE = <size> Event log message: None

Description:

This message is displayed when media is placed in

tray 1 and the tray is configured for Cassette Mode.

<size> = Last media size configured for the inputtray

Action:

1 Press – VALUE + to view

2 Press SELECT when thedisplayed.

3 Press GO to bring the p

If no key is pressed for 30 seis detected in the input tray, automatically selected, the mprinting begins.

TRAY 4COMM ERRORCHECK CABLESCYCLE POWER


Description:

Communication with the 2,000-sheet input unit has

been lost.

Action:

1 Verify all cables are co





TRAY <x> EMPTY

<type> <size>


Description:

An input tray not currently selected has run out ofmedia.

<x> = Input tray number (2, 3, or 4)<type> = Last media type configured for the inputtray<size> = Last media size configured for the inputtray

Action:

1 Load the media type anprinter control panel dis

2 Replace the upper/lowe(remaining paper sensoor deformed. Also, if the

set it in its correct posit3 Reconnect connector J

PCA and connector J2board.

4 Replace the tray 2 and sensors 1 and 2.

5 Replace the pick-up PC


TRAY <x> LIFTING Event log message: None

Description:

The specified input tray is lifting the media intoposition for printing.


Action:


TRAY <x> LOAD<type> <size>CHECK CONTROLPANEL SETTING


Description:

A user has requested a media size and typecombination that is not currently installed orconfigured in the printer. This message is also

Action:

Load the media type and sizprinter control panel display,media type in the printer con




g p ggenerated when the current input tray runs out ofmedia and no other auto-selectable input trayscontain that size and type of media.

yp prequested input tray is loadeautomatically goes online.

Pressing GO causes the prin

TRAY <x>

NOT FUNCTIONAL


Description:

The installed tray is not supported by the printer.


Action:

Press GO to continue printin

TRAY <x> OPEN Event log message: None

Description:An input tray is open.


Action:Close the input tray before r

TRAY <x> TYPE = <type> Event log message: None

Description:

This message is displayed when media is placed in

an input tray.

<x> = Input tray number (1, 2, 3, or 4)<type> = Last media type configured for the inputtray

Action:

1 Press – VALUE + to view

2 Press SELECT when thedisplayed.

3 Press GO to bring the p

If no key is pressed for 30 seis detected in the input tray, automatically selected, the mprinting begins.

WARMING UP Event log message: None

Description:

The fuser is warming up.Action:





Aids to troubleshooting

This section describes various tools service persodiagnose hardware problems.

In addition to the tools described in this section, thsupport CD (which is included with your service muser documentation. Use this additional informatiothe information found in this manual.

Configuration page

Print a configuration page to verify that the printeror to verify information about the printer’s configurincludes the following information:

q serial numberq formatter board number

q page counts (use if the controller board is bei

q transfer kit count for percentage of life remain

q fuser kit count for percentage of life remaining

q engine settings for verifying that the registratioaccurate (the last two digits of the engine settithose found on the sticker)

Printing a configuration page

1 Press MENU until INFORMATION MENU appe

control panel display.2 Press ITEM until PRINT CONFIG PAGE appea



pp

3 Press SELECT to print the page.

Interpreting a configuration page

Figure 181. Example of a configuration page

1 Printer Information — Lists the following info

• printer product number

• serial number

• PCL firmware date code• PostScript version

1

2

8

5 7

4

3 6



p

• total pages printed during the life of the pri

• number of color pages printed during the li

4 Memory — Shows the total memory installed(including the printer hard disk) and the settinthe memory is used.

5 Paper Tray Configuration — Lists the types configured for each input tray.

6 Security — Shows whether the security featuactivated, such as the printer control panel locpanel password, and printer hard disk lock. Tservice information code for service personne

7 Event Log — Lists the last three printer even jams, service errors, and other printer actions

8 Color Adjust — Lists the number of pages sicolor adjustment.

Continuous configuration pageContinuous configuration pages can be printed toprinting in which two pages are developed on the rotation (two-page mode).

Printing a continuous configuration pa1 Press MENU until INFORMATION MENU appe

control panel display.

2 Press ITEM until PRINT CONTINUOUS CONFon the display.


Note Press CANCEL JOB to stop printing. The printer will p



p p g p pin the buffer before stopping.

Demonstration page

Use this page to simulate printing a color image.

quality is in question, a demonstration page shouassure that the problem is not related to softwareor file quality.

Printing a demonstration page

1 Press MENU until INFORMATION MENU appe

control panel display.2 Press ITEM until PRINT LASERJET DEMONS

on the display.


Event logDetailed service information is noted in the event a list of the types of messages logged in the even

q media jam errors

q disk failures

q EIO errorsq catastrophic errors

The last 50 errors are listed, with the most recent Reoccurring events give indications of failing partswithin the printer. See the printer control panel mebeginning on page 316 for more information on ite

event log.

P i ti th t l



Printing the event log

1 Press MENU until INFORMATION MENU appepanel display

Service mode engine diagnostics

Engine diagnostics can be used to perform mecha

print engine and its related components to help piin the printer that need replacement or repair.

WARNING! Take care when you use engine diagnostics — sominterlocks to be defeated, and defeating interlocks chazards in the engine. High-voltage supplies and down whenever the printer is in diagnostic mode. defeating of interlocks without entering the engineresults in potential exposure to the laser and high

Entering the Service Mode Menu

1 From a READY state, press MENU

until SERVappears.

2 Press ITEM – (the left side of the key) and VAL

simultaneously.

For a menu map of the Service Mode Menu, see

Paper path test

The paper path test simulates a page moving throfrom input trays 1, 2, and 3 to the output bins. Remparts (such as the transfer drum) prevents paper fcompletely. It is possible to select the input and outest by indicating in the Paper Path Menu which in

bins should be accessed (by selecting ON or OFFtrays can be selected, but only a single output canpage is fed from each input tray to the selected ou



p g p yduring the test, the test should continue with the nlist.

The pick-up rollers, feed rollers, registration roller,clutch (CL4), cleaning roller press cam and solenotransfer belt, and output feed roller can be exercis

path test. For safety reasons, the fuser, high-voltascanner are all turned off during testing.

1 From the Service Mode Menu, press MENU unappears.

2 Press ITEM until REPETITIONS appears.

3 Press – VALUE + to display the number of repe4 Press SELECT to choose the number of repetit

5 Press ITEM until the desired input source appe

6 Press – VALUE + until ON or OFF appears on

7 Press SELECT.

Note You can select more than one input source for the

8 Press ITEM until OUTPUT= appears on the di

9 Press – VALUE + until TOP OUTPUT BIN or L

appears on the display.10 Press SELECT to choose an output destination

11 Press ITEM until EXECUTE TEST appears on

12 Press SELECT to perform the paper path test.

Notes To stop the paper path test, press CANCEL JOB.

The transfer drum can be removed with the right u



gthe right cover interlock defeated (see figure 182 oHowever, media might not feed past the transfer arinch or A3-sized media is used.

Developer motor test

Visually and audibly inspect the cartridge motor (M

motor (M1) as they rotate during this test. To viewcomponents, run the test with the right upper dootransfer drum removed and the front cover and riginterlocks defeated (see figure 186 on page 372 apage 370). The engine runs this test for a fixed dustops. Multiple repetitions of the test are allowed.

Notes For safety reasons, the fuser, high-voltage supplieall turned off during testing.

The carousel cannot turn with the imaging drum rsupply voltage to the carousel is cut off to avoid a

1 From the Service Mode Menu, press MENU unMOTOR appears.


3 Press – VALUE + to display the possible numb

4 Press SELECT to choose the number of repetit


6 Press SELECT to perform the developer motor



Drum motor test

This test activates the drum motor (M2), imaging d

and imaging drum waste paddle simultaneously. Tcomponents, run the test with the right upper doodrum and imaging drum removed, and the right updefeated (see figure 182 on page 370). The enginfixed duration and then stops.

Note For safety reasons, the fuser, high-voltage supplieall turned off during testing.

1 From the Service Mode Menu, press MENU unappears.


3 Press – VALUE + to display the possible numb

4 Press SELECT to choose the number of repetit


6 Press SELECT to perform the drum motor test

Sensor monitor test

This test allows service personnel to activate and in the printer to verify that the sensors are working

Note For safety reasons, the fuser, high-voltage supplieall turned off during testing.

1 From the Service Mode Menu, press MENU un



pMONITOR appears.


See fig re 60 on page 172 for more information o

Table 41. Sensor monitor test

Designator Sensor name

0 Registration roller paper sensor

1 Pick-up unit paper sensor (PS17

2 Separation sensor (PS5)

3 Fusing delivery sensor (PS1903

4 Top (face-down) output bin deliv

5 Tray 1 paper sensor (PS1301)

6 Tray 2 sensor (PS1202)

7 Tray 3 sensor (PS1201)

8 Duplex paper sensor (PS24)

Paper sensor in the duplexer in

9 Reverse sensor (PS26)Paper sensor in the duplexer at

A

B

Bit 0 of temperature/humidity se

Bit 1 of temperature/humidity se

The ambient temperature and hare combined into 2 bits showintemperature and humidity.00 = Normal/normal01 = High/high10 = Normal/low11 = Low/low



See figure 60 on page 172 for more information o

Exiting the service mode

Disabling interlocks

Figure 182. Right upper cover detection interlock



Figure 184. Black toner cartridge detection interlock

Figure 185. Toner carousel door detection interlock



Front cover

Left lower door

Left lower door

Delivery cover F

detection interlock

d



Left lower doordetection interlock

Laser shutters



Figure 188. Left upper cover detection

Figure 189. Right lower cover detection



Service mode formatter diagnost

1 From the Service Mode Menu, press MENU un

DIAGNOSTICS appears.2 Press SELECT. WARNING MEMORY LOSS a

printer control panel briefly. Then EXECUTE T

3 Press ITEM until one of the following tests appcontrol panel:

• ROM CRC — The read-only memory cyclicreads the values stored in the firmware ROchecksum variables based on the read infocompares the computed checksums with tROM.

• DRAM DIMMS — Installed DIMMs are testhey are supported by the formatter board

properly. The time that this test takes to runon the amount of memory installed. DRAMusing a pattern test, an address test, and a

• IDE ASIC — This test is performed on the formatter board to ensure read and write inwritten to the ASIC registers and then read

• DISK — The disk drive test does the followa instructs the disk drive (if installed) to p

self-test (similar to a power-on test)b enters into sleep mode and wakes up ac seeks and reads sequential sectors ford seeks and reads sequential sectors ba

secondse seeks and reads random sectors for 30f performs read and write tests

VX ASIC Thi t t i f d th V



• VX ASIC — This test is performed on the Vformatter board to ensure read and write in

i h ASIC i d h d

Cold reset

The following are effects of performing a cold rese

q While a cold reset is being performed, all conignored.

q A cold reset changes all user-accessible printin NVRAM to their factory defaults except for

• page counts

• fuser life count

• transfer life count

• multi-bin mailbox mode

• display language

q Color adjust values revert to the factory defau

q User-accessible EIO values are reset to the facold reset.

q None of the service mode variables such as taffected by a cold reset:

• serial numbers

• model name

• model number• registration values

• cold reset paper size

q The event log is not cleared.

Performing a cold reset1 Print a configuration page (see page 361) to r

printer settings.



2 Turn the printer off.

3 Hold down GO while turning the printer on Re

Fault log

The fault log is implemented within the formatter d

error messages. This log provides service personof all errors that occurred while the formatter diagexecuting. This log is completely separate from thentries are made in the event log for any diagnost

Error message logging

When a test in formatter diagnostics detects an eLED is lit and a message describing the error is adThe fault log holds a maximum of 50 entries. Wheand a new message needs to be added, the oldesdiscarded. The contents of the fault log are erasedpowered off or when the fault log is cleared.

Viewing the fault log

The fault log menu appears as an Item selection omore error messages exist in the log. The fault logautomatically at the end of a test run if any error mrecorded. If there are items in the fault log to be vcan be entered by using ITEM to view the fault log

Error message format

Each error message has the form:

mm.NAME_t<description>[<data>]

where:

mm Message number in the faultoldest message

NAME Name of the test that found t



NAME Name of the test that found tt Error number within the test

Paper path troubleshooting

General paper path checklistq Verify the green lever on the fuser is down.

q Check that the post charger cleaner is pushedright. Media jams could occur when it is out o

q Clean the printer. Toner and paper dust in the

free movement of media through the printer asensors.

q Vary the input and output selections of the prithe problem is associated with a particular are

q Worn separation rollers on the input tray causfeeds. Check the condition of the pick-up rollerollers when troubleshooting multi-feeds. Bencause misfeeds and multi-feeds. Replace the

q Defective input tray switches can cause mediathe wrong size media to the formatter board.

q Scraps of paper left in the paper path can caumedia jams. Always check that the paper pathcleaning the printer and when clearing media the fuser and carefully check it for jammed me

q Reduce curl of black-only transparencies by:

• placing the transparencies in a presentatio

• printing to the left (face-up) output bin

q Verify the media requirements starting on pag

Wrinkled pages

q Verify the green fuser lever is down



q Verify the green fuser lever is down.

q Verify the media size and type are set correct

Sealed envelopes

To prevent envelopes from sealing in the printer, s

size in the printer driver as a custom size. Howeveenvelopes as a custom size can cause poor fusin

Media jams

When troubleshooting media jams, remember thaas a result of timing errors. That is, media fails to clear the paper path sensor in the allotted time. This set by the controller board. Stuck or defective spaper path timing to post a jam message at powerpaper caught in the paper path.

Use figure 190 to locate the paper path sensors. Tmessage code identifies the sensor that failed to c

required time.

Note Check that the paper path sensors are free througof travel. All interlock switches must be operationaprinter to clear media jam messages.



Figure 190. Printer paper path

For information on printer and paper handling accechapter 5



chapter 5.

Following are possible media jams:

Table 42. Media jam detection

Location of jam Detected when . . .

Pick-up delay jam 1 The page has not reached the pick-up(PS17) within about:q 1.2 seconds after leaving tray 2

q 1.3 seconds after leaving tray 3

Pick-up delay jam 2 The media does not reach the registra(PS1) within about:q 1.9 seconds after leaving tray 2q 2.0 seconds after leaving tray 3

q 1.8 seconds after leaving tray 1

Transfer jam The separation sensor (PS5) does nothe specified time or longer within 1.5 top of paper signal:q about 0.1 seconds (normal mode

q about 0.4 seconds (overhead tranq about 0.3 seconds (high-gloss mo

Fusing delivery paper delay jam The media has not reached the fusing(PS1903) since the top of paper signaq 3.2 seconds (normal mode)

q 12.8 seconds (overhead transpar

q 9.6 seconds (high-gloss mode)

Fusing delivery stationary jam The media has not passed through th(PS1903) within the specified time aftleading edge of the media within abouq 2.4 seconds (normal mode/letter-

q 9.6 seconds (overhead transparemedia landscape)

q 7.2 seconds (high-gloss mode/let

landscape)q 4.2 seconds (normal mode/11-by

q 17.0 seconds (overhead transparinch-sized media)



q 12.7 seconds (high-gloss mode/1media)

Top (face-down) output bin delivery delaymedia jam The media has not reached the top (fadelivery sensor (PS11) within the spefusing delivery sensor (PS1903) detecq about 4.0 seconds (normal mode

q about 16.0 seconds (overhead tra

q about 12.0 seconds (high-gloss m

Top (face-down) tray delivery stationary

jam

The media has not passed through the

bin delivery sensor (PS11) within the sdetects the media within about:q 2.4 seconds (normal mode/letter-

q 9.6 seconds (overhead transparemedia landscape)

q 7.2 seconds (high-gloss mode/letlandscape)

q 4.2 seconds (normal mode/11-by

q 17.0 seconds (overhead transparinch-sized media)

q 12.7 seconds (high-gloss mode/1media)

Wrong media size feed jam The controller board detects media sizroller paper sensor (PS1), and it stopssize differs more than 15 mm between

size and the actual media size. On thedifference is within +7.5 to 15 mm, or media is automatically delivered.

Door-open jam The sensors listed below detect the mopened or closed:q registration paper roller sensor (P

q pick-up unit paper sensor (PS17)

q separation sensor (PS5)q top (face-down) output bin delive

q fusing delivery sensor (PS1903)

Initial residual jam The sensors listed below detect the m

Table 42. Media jam detection (continued)

Location of jam Detected when . . .



after the power switch is turned ON:q separation sensor (PS5)

Image formation troubleshooting

Before beginning image formation troubleshooting1 Verify the media type is set correctly in the pr

and that the media type selected in the printermedia being printed on.

2 Verify that the media meets the specificationsHP LaserJet Printer Family Paper Specificatio

following media-related items are responsibleformation and print-quality defects:

• rough paper

• heavy paper (heavier than 58 lb, 216 g/m2

• transparencies out of the specified thickne

than 0.5 mil)• paper that has absorbed moisture from the

• room environment (humidity too high or low

3 Print a configuration page. The configuration ability to print each primary and process colorprinting a configuration page, see page 361.

In addition to items listed above, the configurafollowing:

• shows that all colors print

• checks that the room humidity is within spe

• shows varying levels of color

• shows that the formatter board is working p

4 Print a demonstration page to check the follow

• image quality



• image quality

h lf t

Understanding color variations

The printed output might not match the computer

colors printed on successive pages might not matvariations are inherent in this printing method, theindicate changes in the printing environment, princomponents.

Common causes of color variatio

The following list outlines the major causes of colobetween computers, applications, and output dev

q Half-tone patterns produced on monitors and patterns used in the print jobs are different anapparent differences between the printed outp

q Different papers have different color, brightneswill affect the color appearance.

q Printed colors with identical CMYK or RGB vadifferent half-tone (ColorSmart, text, graphic, look different when printed. Select the customdriver (manual color) and change the half-tonthe shading and quality of the colors.

q The printed output differs from the image on ththe monitor and the print media have differentfor black and white. The monitor screen has cblack level, and the white on the monitor screeblue. Black on the print media is limited only bof the printer, and most good-quality paper halevel. In addition, phosphor (used in color mohave entirely different spectra characteristics rendering capabilities. Blues generally match

q The color of the ambient light changes the peFluorescent light lacks emphasizes different c



Fluorescent light lacks emphasizes different cincandescent light and the color range of nat

printer has a humidity sensor that adjusts opeas the humidity changes to minimize the effecchanges.

q All consumable components have a finite life components reach the end of their useful life,produce consistent print quality diminishes.

q When printing on transparencies, OHT must bprinter driver in order for the colors to be treattransparencies.

Color selection process

The user selects the color in the application, but thmight convert or modify some characteristics of thsending the information to the printer driver. The palso modify color characteristics depending upon

mode.Any color characteristics not addressed by the priapplications are set to the printer default. The defmatch the color the user selected.

Some applications (such as Adobe ® PageMaker, PhotoshopTM) bypass the printer driver altogether

is not sent, the printer has no way of knowing the point, and chromaticity assumptions used by the amismatch can cause color differences.

Matching screen colors

Matching input, on-screen, and output colors is a

process. The input device software and output dethe ability to select and produce printed color outpmatching between the printed output and the mon

q Turn off any color matching feature in the soft



y gspecifically mention ColorSync, ICM, or ICC.

Image defects troubleshooting

Image orientationUnless otherwise specified, all references in this sor vertical directions of print quality problems refeon letter- and A4-sized media. These media sizesprinter long edge first.

Because media sizes other than letter or A4 are feshort edge first, the orientations of print quality propposite of those on letter- or A4-sized media. Prthat appear horizontally on a letter- or A4-sized pawith the short edge up run vertically on other medpage is held with the short edge up. The same is tdefect on a letter- or A4- sized page; it will appear

defect on other sizes of media.The following figure shows a print quality problemletter- or A4-sized page and the same defect on aA3-sized page (or any other size of media).

1

3

4



1 Letter- or A4-sized media

2 11-by-17 inch or A3-sized media (or any othe

3 Print quality problem4 Direction media moves through the printer (pr

5 Direction streaking occurs on pages

6 Direction banding occurs on pages

Note PostScript print samples are located on the servic(which is included with your service manual). Princopying them to the parallel port (LPT 1), for examcopy magnta.ps lpt1

Image defect examplesFigures 192 through 202 show examples of imageResolutions for these defects follow the illustration

























Incorrect registration (late and ea

(See figure 192 on page 388 for an example.)

Incorrect registration is when the entire image is oleading edge of the page (the left edge for letter- aand the top of the page for all other media sizes). troubleshooting incorrect registration as an enginethe margins and image placement in the softwaresame file consistently prints in the wrong location suspect a software problem.

If the image is late on the page, the paper is arrivtransfer interface too soon. Check engine settingsService Mode Menu to ensure that the values masticker on the printer (inside the front of the printeprinter control panel); however, the last two digits settings might vary from those printed on the stick

Image skew


The specification for image skew is less than 1.5 span. Image skew might be caused by burrs on th

plate, or paper not feeding from the paper tray corq Check that the media does not stick together

that the media meets the specifications listed Printer Family Paper Specification Guide .

q Ensure the media guides are adjusted properof the media.

q Carefully examine the printed output for signsfolding. These marks might indicate problemspaper path. For instance, imperfections in a pstop the page inside the printer.

q Check the paper pick up rollers for signs of we



Blank or partially blank page


q Print a configuration page and listen for the caleast twice. Open the right upper door and remdrum. If the image does not appear on the traobstructions in the scanner shutters.

q Verify that the media meets the specificationsHP LaserJet Printer Family Paper Specificatio

q Use the continuous configuration page to provpaper reliably. Rough media or light media miprinter to feed multiple pages, which results in

q Check for host communications problems, or network configuration.

q Check for banner pages and form feed comm

software.q Verify that the number of lines per page is cor

lines per page results in “creeping text.” In thisuccessive page begins its print further downeach page is blank.

q If random lines are missing from the page, pripage. If the error still occurs, upgrade the firmfirmware upgrade DIMMs. If the condition performatter board.

q Check for scanner failure. Turn the printer off scanner.



Horizontal streaks (in one color)


q Horizontal lines might occur because of low toprinter control panel display for a TONER LOW<color> or TONER OUT REPLACE <color> m

q Dark or light horizontal lines or streaks appeaoccur because of a defective toner cartridge. Usupport CD to help troubleshoot print quality pslimlt21.ps and vcollt21.ps on letter-sized papand vcola421.ps on A4-sized paper from tray following command at the DOS prompt to princopy <file name> lpt1

q Use the table below to diagnose which toner cthe streaking problems. Replace the toner ca

Table 43. Streaking

If the streak is only in . . . The problem

Red, Yellow, Green Yellow toner car

Red, Magenta, Blue Magenta toner c

Green, Cyan, Blue Cyan toner cartBlack Black toner cart



Horizontal streaks (in all colors, C


q Inspect the paper path and the transfer area fthat might be coming in contact with the unfus

q The post charging unit or transfer charger migcontaminated. Clean both as described on papage 101.

q Check for obstructions and contamination in t

q Use the service and support CD to help troubproblems by printing slimlt21.ps and vcollt21.ppaper or slima421.ps and vcola421.ps on A4-tray 2. Type the following command at the DOthe files:copy <file name> lpt1

q

Look for an imaging drum defect. Replace thenecessary.

q Inspect all fuser rollers for radial lines, and if ffuser.

q Verify the post charging unit is all the way to t

q Clean the paper path rollers with a hand wipe

q Align a page showing the horizontal line defecexit assembly. If the lines align with any of theassembly, replace the face-up exit assembly (

q Align a page showing the horizontal line defecand the output sides of the fuser. If the lines asets of ribs on the fuser, replace the fuser.



Rain

(See also “Speckled print” and figure 197 on page

This defect appears as small specks of toner missmost visible with dark solid colors.

q Check the percentage of life remaining for theconfiguration page. Replace the drum kit if it i

q Check for contamination on the transfer drumnecessary.

q Use the service and support CD to help troubproblems by printing blkftb31.ps on 11-by-17 blka331.ps on A3-sized paper from tray 3. Typcommand at the DOS prompt to print the filescopy <file name> lpt1

q If a new imaging drum has been installed rece

might appear during initial printing but shoulddoes not, replace the imaging drum.

Speckled print

(See also “Rain” and figure 197 on page 393.)

Speckled print (or toner popping) defects are charspeckles caused by missing toner.

q This can be caused by excess moisture in thethe cause of this defect by printing with a proppaper. Check that the media is stored in a dryopened until ready to be used. Also, verify tha

a humid area.q Verify that the green lever on the fuser is lock

green lever is up, the toner does not fuser proflake off the page.

q If the print is speckled on the second side of a



Smeared print

q An undetected jam in the printer can smear prthe front door to allow the printer to clear the j

persists, remove the transfer drum. Look betwdrum surface and the transfer drum handles fmedia. Remove any media, then reinstall the

q If the printer recently had a media jam, open adoor to complete a printer self-cleaning cycle.

q Verify that the green lever on the fuser is lock

check that the fuser does not have toner buildClean any loose toner accumulated around th

q If the waste toner container is full, print might imaging drum life by printing a configuration pis past its rated life, replace the drum kit.

q Perform a paper path test from the Service M

page 365) and look for obstructions in the papq Check that the media meets the specifications

page 26. Rough media is most likely to show is heavier than 28 lb (105 g/m2) bond, you muPaper as the paper type on the paper tab in tensure the correct finish on the media.

q Bent corners on the page can smear print. Duparticularly on rough media, the corner of the If the page retains the bend as it enters the fusof the bend might smear. Ensure that the paploaded in the paper tray. If the defect persistsstack over and end-for-end. Finally, try anothe

q Ensure the transfer belt is installed correctly anotches.



Print on back of page (non-duple

q If the previous page printed was a prepunchewas an image in the location of the prepunche

toner is deposited on the back of the next pageclose the front door to complete a printer self-

q If smears appear on the back of the page, thedirty. Open and close the front door to complecleaning cycle.

q Print a configuration page to check the percen

remaining for the transfer kit. If the transfer kit replace it.


q Inspect the imaging drum for a jammed page.

Poor fusing

Poor fusing is characterized by loose toner on theUnfused or poorly fused toner can be easily wiped

q Verify that the green lever on the fuser is lockcheck that the fuser does not have toner build

area. Clean any loose toner accumulated aroq Verify that the media type is set correctly in th

the printer control panel.

q Check that the media is within the weight andspecifications listed in the HP LaserJet PrinteSpecification Guide.

q Check that the printer does not multi-feed. If menters the fuser, toner on the top sheet might



Ghosting

Ghosting appears as a latent image of previously the page with the currently printed text or graphic.

a repetitive defect, and is generally caused by a totransfer drum, imaging drum, or transfer belt prob

q Open the right upper door and front door, andupper cover detection interlock (see figure 18Place a piece of paper over the density sensoreinstall the imaging drum, and close the fron

engine begins calibrating, verify the red precoLED is lit.

q Print a configuration page (see page 361) andconsumable kits are not past their specified lif

q Print the following files from the service and stroubleshoot print quality problems.

• Print optdtb31.ps on 11-by-17 inch sized paon A3-sized paper from tray 3 to troubleshdrum.

• Print glictb31.ps on 11-by-17 inch sized paon A3-sized paper from tray 3 to troubleshcartridges.

Type the following command at the DOS promcopy <file name> lpt1

q If ghosting is occurring at a frequency of 150 could be a “hot fuser offset.” If the media doespecifications for this printer, such as transpathin, the fuser can lift the toner off of the page

to the fuser roller and be transferred to the nethe appearance of a ghosted image. Verify thespecifications in the HP LaserJet Printer FamSpecification Guide .



Black, brown, or orange bands


Black, brown, or orange stripes (horizontal or vertpage are caused by light leaking into the printer odrum. This happens while the covers are off, suchthe printer. Generally, the imaging drum will recovroom light, but the useful life of the imaging drum This defect is usually gradated along the page, wior stopping point. If the black/brown/orange defec

definite horizontal stripe, it might be necessary to drum. Imaging drum failure is also characterized b

CAUTION Ambient room light can permanently damage the ithe imaging drum in total darkness to protect the pcoating.

Note If the entire page is black/brown/orange, this can voltage power supply problem.

Background toner scatter

(See figure 199 on page 395 for an example.)This defect appears as haze around text and grapwith any color. Thoroughly clean the printer, and epersists before troubleshooting it.

q Ensure media meets the specifications listed Printer Family Paper Specification Guide . Som

especially recycled papers, have specks in thmanufactured. Compare printed and unprinteexisting specks.

q Replace any toner cartridge that is past its ma

q Inspect the charging roller for contamination a



Yellow or black streaks

q The imaging drum is past its maximum life. Ppage and verify the imaging drum is not past

replace the drum kit.q Oxide can build up on the post charging unit.

charging unit (see page 99).

q Look for any fibers or foreign objects that are imaging drum. Clean or remove the objects a

q Replace the imaging drum if this problem pers

Mottled process colors or poor tr


This defect appears as splotchy light areas in dark

q Ensure media meets the specifications listed Printer Family Paper Specification Guide . Roumedia can cause this problem.

q Clean the transfer charger as shown page 10transfer belt. Oxide build-up on the transfer chaffects how the printer transfers the developepage. If the defect persists, replace the transf

q Verify the printer driver and printer control pancorrect for the media type.

q Print on different media to determine whetherrelated to the media.

q Transparencies printed to the left (face-up) ou

this defect because the transparencies stick toprinting in smaller batches.



Faint print

(See also “Mottled process colors or poor transfer

A faint print image is a defect characterized by thedeveloped at a reduced print density in any of the(CMYK).

q Ensure media meets the specifications listed Printer Family Paper Specification Guide .

q The moisture content of the media is uneven

areas of media might reject toner. Try media fsource or from an unopened ream of media. Aprinter is operating within the environmental son page 21.

q Excessively rough paper can cause transfer pa smooth xerographic paper.

q

A toner cartridge might be running out of toneTONER LOW REPLACE <color> or TONER O<color> message on the printer control panel.cartridge indicated on the display.

q If the faint print, or missing print, is on the secopage, the media might be too light for proper specifications, see page 28.

q Print a configuration page and verify the transmaximum life. If necessary, replace the transf

q Verify media type set in the printer driver and pis correct.




Stray toner


q

Check for toner build-up inside the printer, esphorizontal surfaces. Use a hand wipe to remo

q Check the paper weight and smoothness. Rotogether, causing multi-feeds. Heavy media orof multiple sheets of paper can cause poor fustoner on the fuser rollers. This toner comes ofstray toner.

q If a media jam occurred recently, open and clocomplete a printer self-cleaning.

q If the stray toner is on the back of a simplex pcharge to clean the transfer belt is not being anot enough bias to transfer the toner back to tClean the printer by opening and closing the f

q Verify the cleaning roller rotates freely and is necessary.

q Check the event log for fusing errors. If the fusproperly, the unfused toner accumulates aroudeposited on the page as stray toner.

q Clean the waste toner tray (see page 102).

q If contamination is made up of all four toner coimaging drum is not contaminated and that thcartridge is not too full (a full waste toner cartimaging drum much heavier than a new imagcartridge is full, check the waste toner detectioerror message appeared on the printer contro



Banding (less than 10 mm)

Banding is characterized by light or dark lines of cperpendicular to the paper path direction. Banding

old maintenance units, by worn or damaged gearsconsumables that are beyond their rated life. Alsomight appear at the beginning and at the end of th

q Check the imaging drum life by printing a conReplace the drum if necessary.

q Remove the toner cartridges and inspect the

damage. Replace if necessary.q Print the following files from the service and s

troubleshoot print quality problems:

• Print vcoltb31.ps on 11-by-17 inch sized paon A3-sized paper from tray 3 to troubleshcartridge banding.

• Print grastb31.ps on 11-by-17 inch sized paon A3-sized paper from tray 3 to troubleshand main gear train banding.

Type the following command at the DOS promcopy <file name> lpt1

Banding (14 mm)

This defect is characterized by light or dark lines orepetitively at 195 mm (imaging drum repetitive decaused by high or low humidity conditions at the bimaging drum life. The 14-mm band correlates to t

of the imaging drum sealed by the cleaner blade a(see figure 38 on page 140).

q Leave the printer in Power Save mode for 24 drum will rotate periodically.

P f it t t ( 368)



Overhead transparency defects

Overhead transparencies can display any of the imshown in figures 192 through 202 (pages 388 thro

addition, because transparencies are pliable whilethey are subject to being marked by the media-haPrint from tray 1 to the left (face-up) output bin to rof print defects on transparencies.

q Verify that the green lever on the fuser is lock

q Check that the transparencies meet the speci

page 31.q Make sure that Transparency is checked as

the Paper tab in the printer driver. Also, make input tray is correctly configured for transpare

q If transparencies show lines and creases in thprinted output, compare the defect against the

ruler to help isolate the cause to a particular cpage 420).

q If the transparencies have spots or smudges, careful not to touch the surface of the media. can contaminate transparencies, causing spo

q Small-random-dark areas on the trailing edge

might be caused by transparencies sticking to(face-up) output bin. Try printing the job in sm

q Small random spots can be caused by dust osurface.

Note Allow transparencies to cool at least 30 seconds be

Transparencies created on the printer should not btype (portable) transparency projectors. Colors witransmissive projectors.



Dark yellow print or contaminate


This defect can be caused by toner being depositIf the transfer kit is past its maximum life, colors mcontaminated.

q Try to avoid printing black or dark-colored imapreceding yellow or light-colored images.

q The cleaning roller might not be cleaning the t

correctly. Open and close the front door of thea cleaning cycle.

q Print a configuration page to check the life of Replace the transfer kit if it is past its rated life

q Print continuous configuration pages (10 to 20the print quality improves.

q Print a configuration page to check the life of Replace the drum kit if it is past its rated life.

q If contamination is made up of all four toner coimaging drum is not contaminated and that thcartridge is not too full (a full waste toner cartimaging drum much heavier than a new imagcartridge is full, check the waste toner detectioerror message appeared on the printer contro

q Use the service and support CD to help troubproblems. Print clean.ps (found on the CD) onpaper from tray 2 and on 11-by-17 inch or A3tray 3 to troubleshoot the cleaning and contamType the following command at the DOS prom

copy <file name> lpt1



Color balance adjustment

CAUTION Adjusting the color balance changes the printer’s cthis procedure adjusts parameters within the printaffect all print jobs.

The printer automatically recalibrates the color seyou can adjust the color manually from the defaulchanging the densities of the four toners (black, c

yellow). Changing the Detail Half-tone Adjust andAdjust allow you to independently adjust the colorpage that use the smooth and detail half-tones (sugraphics). Any settings you change remain in effethem again or restore the factory defaults.

Do not perform the color balance adjustment proc

following troubleshooting methods have been comq Experiment with the printer driver and applica

adjust the color output. For more information settings, see the online help.

q Clean the density sensor (see page 100).

q Complete the troubleshooting solutions earlie

the color printing problem you are experiencin



Figure 203. Color adjust page

A Smooth Half-tone Adjust section

B Color ramps

B

A

D



1 Print the color adjust page.

a Press GO and – VALUE + at the same timeMENU appears on the printer control panel

b Press ITEM until PRINT TEST PAGE appearc Press SELECT to print the color adjust pag

d Press GO to exit the Color Adjust Menu.

The color adjust page allows you to adjust thetone screens for each of the four colors (black

and yellow) for a total of eight adjustments. Madjustments after examining the color adjust p

The color adjust page consists of two sectionstone Adjust section and the Smooth Half-toneEach section shows the adjustment ramps formagenta, and yellow and a neutral axis check

be used to verify the adjustment after the corrbeen entered for each of the primary colors. Fexample of the color adjust page.

2 Note the numbers beside the red arrows fo

The color adjust page indicates the last set ofsettings with a red arrow next to the saved seteach color is 0 (other possible settings include

3 Determine the color adjustment numbers fthe color ramps.

a Examine the color adjust page from a dist(approximately 2 m).

b Find the circle of each color that most clo

background color. It might be necessary tmatch the colors.

c Record the number in the circle.



4 Enter the color adjustment numbers in thepanel.

a Press GO and – VALUE + at the same timeMENU

appears on the display.b Press ITEM until the option you want appe

The options are listed below:

c Press – VALUE + until the number recordeappears on the display.

d Press SELECT to enter the number into theAn asterisk (*) appears to the right of the

e Repeat steps 4a through 4d to adjust the necessary.

5 Reprint the color adjust page.

6 Examine the new color adjust test page ancolor adjustment is correct.

• Verify that each of the color ramps (black, cyellow) matches the background for each carrow next to the circle. If another circle mabackground more closely, return to step 4 ton the printer control panel to the number s

• Verify that the circles in the neutral axis are

adjust test page are neutral gray (gray withothen verify that one of the circles in the ramclose to the background. If the circles are nadditional corrections to cyan, magenta, ornecessary If there is an overall tint of color

q BLACK SMOOTH VALUE = q CYAN S

q MAGENTA SMOOTH VALUE = q YELLOW

q

BLACK DETAIL VALUE =q

CYAN Dq MAGENTA DETAIL VALUE = q YELLOW



For example, if the circles in the neutral axes showthe circle appears lighter than the background, theshould be examined closely to determine if magenincreased.

Note If the color settings are less accurate when you finadjustment than when you started, reset all color vthe printer control panel and try the adjustment ag

Table 44. Neutral axis adjustments

Overall color of

circles

Correction if all circles are

darker than background

Correction i

lighter than

Cyan tint Reduce cyan Increase mage

Magenta tint Reduce magenta Increase cyan

Yellow tint Reduce yellow Increase mage

Green tint Reduce yellow and cyan Increase mage

Red tint Reduce yellow and magenta Increase cyan

Purple or blue tint Reduce cyan and magenta Increase yellow



Repetitive defects troubleshooting

Repetitive defects are defects that occur in the sa

on the page, but not necessarily on each page. Mdefects are caused by problems with one of the fo

q developer roller (38 mm)

q charging roller (44 mm)

q cleaning roller (56 mm)

q developer DSD wheels (65 mm)q transfer roller (66 mm)

q transfer drum (once per 11-by-17 inch or A3-sother letter- or A4-sized page)

q fuser (150.5 mm)

q

imaging drum (195 mm)q transfer belt (222 mm)



First occurrence of print defect

Color developer roller 38 mm

Charging roller 44 mm

Black developer roller 52 mmCleaning roller 56 mm

Developer DSD wheels 65 mmTransfer roller 66 mm

Transfer drum once per 11-by-17 inchor A3-sized page or every other letter-or A4-sized page



Color developer roller

Symptoms: Print defect occurring every 38 mm.

Cause: Dirty or damaged developer roller.

Actions: Replace the toner cartridge.

Charging roller


Cause: Dirty or damaged charging roller.Actions: Replace the toner cartridge.

Black developer roller


Cause: Dirty or damaged developer roller.

Actions: Replace the toner cartridge.

Cleaning roller

Symptoms: Print defects occurring every 56 mmCause: Dirty or damaged cleaning roller.

Actions: Clean the cleaning roller with a hand wipnot resolve the defect, replace the cleaning roller.

Developer DSD wheelsSymptoms: Print defect occurring every 65 mm.

Cause: Dirty or damaged developer DSD wheelslocated on the outer ends of the color toner cartrid



Transfer roller


Cause: Dirty or damaged transfer roller.

Actions: Clean the transfer roller with isopropyl awipe. If cleaning does not resolve the defect, repla

Transfer drum

Symptoms: Print defect occurring once per pageor A3-sized media, or on every other letter- or A4-

Cause: Dirty or damaged transfer drum.

Actions: Clean the transfer drum (see below). If tresolved by cleaning, replace the transfer drum.

Cleaning the transfer drum

Many, but not all, repetitive defects can be removefollowing procedures. Defects that appear as light of print are more likely to be corrected by this procspots in unprinted areas.

CAUTION If the procedures are performed incorrectly or withtransfer drum can be permanently damaged.

This procedure requires the following items:

q a print sample showing the repetitive defect

q a clean, flat surface to work on

q isopropyl alcohol

q a hand wipe



1 Turn the printer off and open the front door.

2 Press the button and swing the lower lever to

3 Open the right upper door, and remove the tra

4 Using the print sample as a reference, inspecfor a spot or speck that might be causing the

Figure 205. Cleaning the transfer drum

CAUTION Do not clean the transfer drum using force. Do not ucleaners or excessive alcohol. These actions can pethe transfer drum.

5 Gently rub the spot or speck with a hand wipe

Note If necessary, use isopropyl alcohol on a hand wipe drum. If you use isopropyl alcohol, print 50 to 100 residual isopropyl alcohol from the drum



Fuser

Symptoms: Print defects occurring at about 150.will be most visible on overhead transparencies.

Cause: Defect on the upper fuser roller.

Actions:

1 Power the printer off, allow 30 minutes for theremove the fuser.

2 Turn the fuser gears and inspect the surface o

roller. If the roller has surface defects, replaceassembly.

Imaging drum

Symptoms: Print defects occurring every 195 mm

Causes:

q Damage such as scratches or dents on the imusually appear as dark or light marks on the p

q Paper dust adhering to the imaging drum. Theas white marks in the dark printed areas of th

q

Exposure of portions of the imaging drum to ldark sections in the printed output. The life of shortened by exposure to strong light.

Actions:

q Print at least four configuration pages to deterrepeats in the same vertical orientation.

q Inspect the imaging drum for scratches, dentsReplace if needed.

q If the problem is dust, remove the dust with 70applied with a hand wipe. Try this only if the p



Transfer belt

Symptoms: Print defects occurring every 222 mm

Cause: Defects on the transfer belt surface.

Actions: Remove the transfer belt and inspect theUse the transfer belt gears to rotate the belt throu

2 000 h i i bl h i



2,000-sheet input unit troubleshooting

This section provides a systematic approach to ide

of malfunctions and errors in the 2,000-sheet inpu

Ways to troubleshoot the unit

In general, there are three possible sources of ma

q the 2,000-sheet input unit itself

q printer electronics

q C-link cable that connects the unit and the pri

Begin troubleshooting

1 Print or display the error log. Evaluate the erro

specific error trends in the last 10,000 printed2 Print a configuration page to verify the proper

paper-handling accessories.

• If any of the installed accessories are not sconfiguration page, check the correspondinconnections.

• Verify that the C-link cable is correctly connfunctional.

• Verify that DC power is available to the papaccessories.

3 If necessary, use one of the following diagnos

the problem:• Status LED on the front of the unit — Ind

the unit (see page 427).

• Service LED inside the back cover — Th

St t LED d i ti



Status LED descriptions

The status light on the front of the unit provides st

Table 45. Status LED on the 2,000-sheet input

State Description Resolut

Solid green The unit is on and ready. None req

Solid amber The unit is experiencing ahardware malfunction.

Isolate thof the othdescribe

Flashingamber

The unit has a media jam or apage needs to be removedfrom the 2,000-sheet inputunit, even if the page is not

jammed.

The VTU might be open.

Clear thepage.

Close the

Off The printer might be in PowerSave mode.

The unit is not receivingpower.

Press GO

Check ththe powe

S i LED d i ti



Service LED descriptions

Figure 206. Rear view of 2,000-sheet input unit

1 Service LEDs

2 DIP switches

3 Power supply

Note Be sure to turn the power supply off and set all DIPposition when you finish the test or the unit will no

The DIP switch is ON if it is to the right. The DIP sto the left.

1 2

3

Service LED interpretation



Service LED interpretation

If the 2,000-sheet input unit is working properly, it from tray 4 and expel it; the bottom service LED w

every 0.5 seconds.

Table 46. Patterns of LED flashing (2-second pause between

Long(1 sec)

Short(0.3 sec) Description Recomme

3 1 Lifter malfunction Verify that the trayby hand. Verify thaplates are installesame correspondbent. If neither of treplace tray 4.

2 1 Registration sensor delay jam The media does nOpen the VTU do

media. Replace thassembly or the passembly.

2 2 Registration sensor stationary jam/initial jam

Open the VTU domedia. Check the the correspondingunit.

2 3 Jam sensor delay jam The media did notOpen the VTU domedia. Replace thassembly or the passembly.

2 4 Jam sensor stationary jam/ initial jam

Open the VTU domedia.

1 1 VTU door is open Close the door.1 2 Tray 4 is open

Wrong paper size loaded

Close the tray.

Load the correct ssensors

DIP switch settings



DIP switch settings

The following table shows the position of the DIP seach of the 2,000-sheet input unit diagnostic tests

Standalone running test

This test verifies that the 2,000-sheet input unit isproperly. For this test, use the service LEDs. (Seeinterpretation of the service LED patterns.)

CAUTION To prevent excessive media jams during this test, pages.

1 Ensure that paper is in the tray.

2 Set the DIP switches on the 2,000-sheet inpuPCA for the standalone running test. (See pagexplanation of the settings.)

3 Use the switch that is located on the unit’s powto diagnostic mode.

• If the unit does not work, there is no paperlower service LED flashes in a pattern thatproblem (See page 429 for an interpretatio

Table 47. DIP switch settings for troubleshooting test proced

DIP switch Normal setting Motor test

Standalonerunning tes

1 Off On On

2 Off On Off

3 Off Off Off4 Off On On

Motor test



Motor test

This test verifies that the three motors on the 2,00are functioning properly.

1 Remove the back cover from the 2,000-sheet page 273).

2 Open tray 4 and the vertical transfer unit (VTU

3 Set the DIP switches on the 2,000-sheet inpu

PCA for the motor test. (See page 430 for an settings.)


• If the motors are working properly, they rot

• If the motors do not rotate, replace the correplaceable unit: either the paper pick-up aor the paper deck drive assembly.

5 To stop the test, turn the switch on the power operational mode and reset the DIP switches PCA to the off position.

Sensor test



Sensor test

Figure 207. Location of sensors in the 2,000-sheet input u

1 Paper exit sensor (PS32)

2 Paper entry sensor (PS31)

3 VTU closed sensor (PS35)4 Paper tray raised sensor (PS34)

5 Paper tray empty sensor (PS33)

1

2

3

4

5



1 Set the DIP switches on the 2,000-sheet inpuPCA for the sensor test. (See page 430 for ansettings.)

2 For each paper sensor:

a Open the paper tray and the VTU on the unit.

b Remove the metal spring that holds the s(secured by 1 screw) (see figure 153 callo

callout 2).c Pull out the sensor unit.


4 Manually activate the sensor.

• When you activate the sensor, the bottom controller PCA comes on. When you releasLED goes off.

• If the LED does not come on, there is a prosensor. Replace the corresponding field re

5 To stop the test, turn the power supply switch mode and set the DIP switches on the controlposition.

Multi-bin mailbox troubleshooting



Multi bin mailbox troubleshooting

The multi-bin mailbox standalone diagnostic tool i

aid that verifies how the multi-bin mailbox functionare designed to be used without C-link commandscontroller on the printer.

Switching the multi-bin mailbox t

1 Turn the printer off and remove the multi-bin mprinter.

2 Move the multi-bin mailbox power supply swit(callout 1).

Note Reset the power supply switch to normal mode whe

diagnostic tests; otherwise, the multi-bin mailbox

1

Power-up sequence test



p q

1 Push in and hold the multi-bin mailbox interlocbin mailbox begins a power-up test.

• All the motors in the multi-bin mailbox startdelivery head assembly moves up and dowmailbox twice, scanning to determine that abins are properly installed.

• At the end of the power-up test, the flipper working and waiting for feeding paper.

2 Check the user status LED on the front and thLEDs on the back side of the multi-bin mailbotest is successful, the user status LED remainmiddle service LED shows solid red. The otheremain off.

3 If the service LEDs are blinking in a pattern, i

code, a problem exists (table 48 on page 436indicated by the blinking pattern).

Paper path test

Note Use only supported media types for the paper pat

1 Manually feed paper through the input paper g

• The paper passes across the flipper assemdown to the bottom paper bin through the tsystem via the delivery head assembly.

2 Feed several pages, one at a time, through theIf the paper path test is successful, reinstall th

3 If a problem exists, the service LEDs blink in aan error code (table 48 on page 436 lists the eindicated by the blinking pattern)

Multi-bin mailbox LED descriptio



p

The multi-bin mailbox features a user status LED LEDs.

q The user status LED is a single LED that is locover of the multi-bin mailbox at the top. The information about the power-on status and abto and alignment of the accessory with the pri

q The three service LEDs are near the center omailbox back cover. The service LEDs blink in

each other, indicating the status of the multi-b

LED status interpretation

Solid green

Solid red

Blinking redSolid amberBlinking amberBlank

Table 48. Status LEDs on the multi-bin mailbox

User

LED

Service

LEDs Message description Recom

Multi-bin mailbox ready

The multi-bin mailbox wassuccessfully connected and initializedby the printer.

q No action

Power Save mode

The multi-bin mailbox is in PowerSave mode.

q No action

Table 48. Status LEDs on the multi-bin mailbox (continued)



Multi-bin mailbox unlatched fromthe printer

The multi-bin mailbox is not properlyattached to the printer.

q

Check alimailbox.

q Check the

q Check ad

q Check the

Flipper error

During the flipper calibration, an

abnormal reference voltage wasencountered.

q Check foassembly

q Check caq Replace f

q Replace tcontroller

Face-up bin is too full

The face-up bin is too full.q Remove

bin.

q Check fo

q Replace tq Check for

connectio

Jam in flipper area

Time-out condition at the entry area.q Open jam

for mediaflipper as

q Check for

q Replace tq Replace t

controller

Jam in belt

Time-out condition in the transportbelt.

q Check fortransport head ass

q Ensure fr

transport q Ensure th

the transp

q Check thplace and

User

LED

Service


Table 48. Status LEDs on the multi-bin mailbox (continued)



External memory errorMulti-bin mailbox nonvolatile RAM(NVRAM) damaged.

q

Replace tcontroller

Jam in delivery head assembly

Time-out condition in the PSExit1sensor.

q Check fodelivery h

q Check forPSExit1 athe delive

q Check thathe ejectohead ass

q Replace tconnects

assemblyq Replace t

assembly

q Replace tcontroller

Jam in the delivery head position

system

The elevator motor detects an invalidwindow when scanning.

q Check thascan bar

q Check fodelivery h

q Check fordelivery h

q Check thaseated co

q Check tha

cover areq Replace t

q Replace tassembly

q Replace t

User

LED

Service


Communications troubleshooting



HP network interface support

Unless you are experienced with the particular neseek the help of a qualified network professional bnetwork configuration settings.

If the printer is configured with an HP network intean HP JetDirect product), the Response Center is

with any problems. Additional information is availaHP JetDirect Printer Software Installation Guide (ordering information).

CAUTION Network interface cards are not directly interchanexchange interface cards without understanding aconfiguration process for each of the exchanged c

network.

Third-party network interface sup

If a problem is associated with a third-party networefer to the documentation that came with the card

support organization for help in troubleshooting.

Diagrams



This section contains general circuit (wiring) diagr

Figure 209. Connectors on the controller board





8



8Parts and diagra

Chapter contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ordering parts . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consumables, options, and accessories . . Miscellaneous parts. . . . . . . . . . . . . . . . . . .

Illustrations and parts lists . . . . . . . . . . . . . . . . . . .

Major assembly locations . . . . . . . . . . . . .

Printer covers and doors . . . . . . . . . . . . . .

Internal cover assembly. . . . . . . . . . . . . . . .Internal components . . . . . . . . . . . . . . . . .

Drum/cartridge drive assembly . . . . . . . . .

Delivery drive assembly. . . . . . . . . . . . . . .

Tray 3 assembly . . . . . . . . . . . . . . . . . . . . . .

Tray 2 assembly . . . . . . . . . . . . . . . . . . . . . .Paper pick-up assembly. . . . . . . . . . . . . . .

Registration frame assembly . . . . . . . . . . .

Registration roller assembly

2,000-sheet input unit covers and doors . .

Multi-bin mailbox components



Multi-bin mailbox components . . . . . . . . . .

Numerical parts list . . . . . . . . . . . . . . . . . . . . . . .

Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . .

Overview



The figures in this chapter illustrate the major ass

printer and their component parts. A table (materiaexploded assembly diagram. Each table lists a refthe illustration, part number, quantity, and descrip

Note When looking for a part number, pay careful attenlisted in the description column (if there is one) to number selected is for the correct printer model.

Ordering parts

All standard part numbers are stocked and can beSupport Materials Organization (SMO) or Suppor

(SME). For information on contacting SMO or SM

Note Parts that have no reference number or part numbreplaceable and cannot be ordered.

Consumables, options, and acceThe items listed in table 49 are available through yauthorized HP dealer. To find a dealer near you (odealer is temporarily out of stock), call the HP CusCenter at (1) (800) 752-0900.

Note Order two sets of DIMMs if upgrading the printer mset of DIMMs if replacing memory.

Table 49. Options, accessories, and consumables



Table 49. Options, accessories, and consumables

Part number Description

Memory

C2986-60001 Hard disk, internal

C4140A 4-MB synchronous DIMMNOTE: For all DIMM products, you must install DRAsynchronized pairs—for example, two 4-MB DIMMs.

C4141A 8-MB synchronous DIMMC4142A 16-MB synchronous DIMM

C4143A 32-MB synchronous DIMM

C3913A 64-MB synchronous DIMM

EIO accessories

C2985A EIO hard diskJ3110A Ethernet 10Base-T

J3111A Ethernet combo (10Base-T, BNC, and LocalTalk)

J3112A Token Ring

J3113A 10/100Base-TX

Paper handling accessories

C4782-60501 Duplexer (product number C4782A)

C4782-69501 Exchange duplexer

C4785-60500 Multi-bin mailbox (product number C4785A)NOTE: You must have a 2,000-sheet input unit in ord

bin mailbox.C4785A-69501 Exchange multi-bin mailbox

Table 49. Options, accessories, and consumables (continued




Consumables

C4149A Black toner cartridge

C4150A Cyan toner cartridge

C4151A Magenta toner cartridge

C4152A Yellow toner cartridge

C4153A Drum kit

Imaging drum2 air filtersHand wipe

C4154A Transfer kitTransfer drumTransfer beltCleaning roller

Charcoal filterHand wipe

C4155A 110-volt fuser kitFuser6 paper rollersHand wipe


Cables

92215S Macintosh DIN-8 printer cable

92215N HP LocalTalk cable kit

C2946A IEEE-1284 compliant parallel cable of 3 m (approximamale/micro 36-pin male “C” size connector

C3763 60502 C li k bl (f f tt b d t th 2 000 h t


Table 49. Options, accessories, and consumables (continued




Miscellaneous parts

Reference materials

5021-8956 HP LaserJet Printer Family Paper Specification Guide

5021-0337 PCL/PJL Technical Reference Package

5091-6456 HP Peripherals Connectivity Solutions Guide

5966-5171 HP JetDirect Software Installation Guide (English)

C3989-60115 HP Color LaserJet 8500, 8500N, 8500 DN Service an

C3983-67902 HP Color LaserJet 8500, 8500N, 8500 DN Self-Paced

C3893-67903 HP Color LaserJet 8500, 8500N, 8500 DN Self-Paced

C3983-90919 HP Color LaserJet 8500, 8500 N, 8500 DN Quick Ref

(English)

C3989-90901 HP Color LaserJet 8500, 8500 N, 8500 DN Getting St

C3989-90937 HP Color LaserJet 8500, 8500 N, 8500 DN User’s Gu


Table 50. Miscellaneous parts


C3983-40001 Control panel overlay, English

C3983-40002 Control panel overlay, Traditional Chinese

C3983-40003 Control panel overlay, Korean

C3983-40004 Control panel overlay, Simplified Chinese

C3983-40005 Control panel overlay, Portuguese

C3983-40006 Control panel overlay French

Table 50. Miscellaneous parts (continued)




Illustrations and parts lists

The following illustrations and their assorted parts

replaceable units (FRUs) for this printer. At the enthere are two cross-reference tables of all of the pchapter: table 81 lists the parts in numerical orderand table 82 lists the parts in alphabetical order. B

C3983-40014 Control panel overlay, Italian

C3983-40015 Control panel overlay, Russian

C3983-40016 Control panel overlay, Czech

C3983-67905 Formatter assembly

C4781-60500 Power box

C4785-60513 Multi-bin mailbox, repackaging kit

C4785-70001 Multi-bin mailbox, short C-link cable adapter

C4787-60503 Multi-bin mailbox, shipping lock kit

J3113-61003 PCA, 10/100Base-T

RY7-5044-000CN Screw kit (2,000-sheet input unit)

XA9-0836-000CN Screw, TP, M3 x 6, quantity 10


XA9-0940-000CN Screw, w/washer, M4 x 12, quantity 4



Major assembly locations



Left coverfeeder assembly

Registration roller

Transfer belt

assembly

assembly

Delivery assembly



Solenoid assembly

Tray 2

Delivery frame

Tray 3

assembly

Fuserassembly

ImColor toner cartridge Black toner cartridge

Printer covers and doors



Table 51. Printer doors and covers (1 of 3)



Ref. Description Part numb

3 Cover assembly, front RG0-0112-03B Lever, shutter RA0-0008-0

3D Strap, front door support RB1-4497-0

3E Latch, roller action RB1-5153-0

4 Cover assembly, left upper RG0-0113-0

4B Lever, left upper door RB1-6485-0

4C Spring, left upper door lever RB1-6486-0

8 Cover, hinge RA0-0068-0

9 Cover, front right RA0-0069-0

10 Cover, left lower RB1-6480-0

11 Tray, face-up RB1-6491-0

12 Cover, power switch RB1-6492-0



Table 52. Printer doors and covers (2 of 3)




1 Filter, large air RB1-9807-02 Cover assembly, top RG0-0111-0

2D Stop, flip-up media RA0-0073-0

5 Cover assembly, rear RG0-0115-0

6 Cover, left rear RA0-0065-0

6A Stopper, open/close RB1-6484-0

19 Filter, small air RB1-9808-0

20 Cover, auxiliary RA0-0078-0

39 Cover, fan RF0-0012-0

51 Cover, rear fan housing RG0-0017-0

51A Support, cover RA0-0079-0

51B Spring, compression RS5-2719-0



Table 53. Printer covers and doors parts




7 Cover, right rear RA0-0067-0

16 Cover assembly, right lower RG5-3096-0

16C Stopper, open/close RB1-6484-0

16D Lever, right lower cover RB1-6485-0

16E Spring, compression RB1-6486-0

16G Roller, paper RB1-6488-0

17 Lever, right upper door RB1-6485-0

22 Spring, right lower door lever RB1-6486-0

26 Spring, torsion RB1-9798-0

31 Cover, right subassembly RF5-1995-0

32 Cover, density sensor RB1-9537-0

35 Density sensor assembly RG5-3057-0

35A Brush, cleaning RB1-9617-0

36 Preconditioning exposure LED assembly RG5-3980-0

41 Filter, charcoal RB1-9836-042 Fan 3 (FM3) RH7-1393-0

46 Cover, tray 1 side gear RB1-9547-0

54 Hinge, stopper (tray 1 delivery assembly) RG5-3962-0

Internal cover assembly



Table 54. Internal cover assembly parts

Ref Description Part numb




1 Cover assembly, inner left RG0-0104-02 Cover, inner 2 RA0-0026-0

3 Cover, inner 3 RA0-0027-0

4 Cover, inner 4 RF0-0013-0

4A Label, “CAUTION” RS5-8380-0

5 Waste toner tray RB1-9804-0

6 Latch, roller action RF0-0003-0

7 Media jam knob RB1-9928-0

10 Cover, waste toner tray RA0-0083-0

Internal components



Table 55. Internal components parts (1 of 6)

Ref Description Part numb




2 PCA, photosensor RG5-3080-03 Plate, duct mount RF5-2036-0

4 Duct, rear lower air RB1-9401-0

6 Carousel stop assembly RG5-3053-0

8 PCA, fusing delivery sensor RG5-3992-0

11 Cover, carousel stop RB1-9789-0

15 Connector holder assembly RG5-3031-0

16 Cable, main RG5-3097-0

18 Cable, sensor RG5-3144-0

19 Cable, DC power RG5-3921-0

20 Cable, power signal RG5-3922-0

21 PCA, cartridge release lever RG5-3961-0

25 Power supply assembly (110V)Power supply assembly (220V)

RH3-2185-0RH3-2187-0

30 Switch, toner cartridge cover (SW672) WC4-5150-

140 Face-up solenoid assembly RG5-3022-0








6 Lever assembly, transfer drum RG5-3046-07 Lever assembly, pressure RG5-3045-0

8 Bushing RS5-1119-0

10 Lever assembly, black cartridge RG5-3087-0

22 Switch, black toner cartridge (SW644) WC4-5136-

23 Photo-interrupter, IC, TLP1240 WG8-5210-



501 Ring, E XD2-1100-6







1 Cover, right rear lower corner RA0-0074-02 Transfer drum contact assembly RG5-3044-0

4 Spring, compression RB1-9675-0

5 Rod, power switch RB1-6463-0

6 Spring, leaf RB1-6909-0

7 Gear, 11T RB1-9424-0

8 Sensor assembly, color toner RG5-3034-0

9 Cover, cable RB1-9805-0

15 Mount, clutch RB1-9828-0

20 PCA, high-voltage converter 1 RG5-3026-0

21 PCA, high-voltage converter 2 RG5-3943-0

24 High-voltage converter 1 RH3-0211-0

25 High-voltage converter 2 RH3-0228-0

26 Motor, carousel (M1) RH7-1325-0

27 Clutch, transfer belt press (CL4) RH7-5168-0

28 Spring, tension RS5-2465-0

30 Separation discharge high-voltage converterPCA

RG5-3966-0

39 Separation discharge high-voltage converter RH3-0234-0

501 Ring, E XD2-1100-5







3 Tray rail assembly RG5-1851-05 Cable, main motor RG5-3942-0

6 Cable, carousel RG5-3923-0

7 Cover, gear RB1-9403-0

10 Transfer swing assembly RG5-3010-0

12 Cable, delivery connector RG5-3147-013 Lever, registration roller RB1-9580-0

18 Main drive assembly RG5-3066-0

20 Cable, delivery RG5-3104-0

21 Motor, main (M4) RH7-1323-0

24 Photo-interrupter, IC, TLP1241 WG8-5362-

26 Screw, RS, M3 x 6 XA9-0849-0







3 Cover, cable RB1-9948-07 Shield case assembly RG5-3023-0

7D Rail, PCA RB2-0005-0

14 Gear, 14T RB1-9955-0

15 Gear, 14T RB1-9956-0

17 Transfer drum RG5-3039-018 Laser/scanner unit RG5-3936-0

24 Sensor assembly, toner waste RG5-3934-0

37 Screw, w/washer, M4 x 12 XA9-0940-0







3 Holder, fan RF5-2025-04 Duct RB1-9682-0

7 Fan 2 (FM2) RH7-1373-0

8 Fan 1 (FM1) RH7-1330-0

14 Static charge eliminator assembly RG5-3973-0

15 Cleaning roller assembly RG5-3975-016 Spring, torsion RS5-2698-0


20 Spring, torsion RS5-2697-0

21 Transfer drum cleaner holder assembly RG5-3111-0

30 Cassette crossmember assembly RG5-3089-0

32 Rail, tray 3 RF5-1396-0

36 Transfer mount assembly RG5-3008-0

37 Sensor slider assembly RG5-3131-0

Drum/cartridge drive assembly



Figure 224. Drum/cartridge drive assembly

Delivery drive assembly



Tray 3 assembly



Tray 2 assembly



Paper pick-up assembly







Table 65. Paper pick-up assembly parts


— Paper pick-up assembly RG5-3132-0



p p p y

20 Roller, feed RF5-1834-0

21 Roller, pick-up RF5-1835-0

48 Flag, paper sensing RB1-6557-0


51 Arm, sensor RG5-1859-052 Photo-interrupter, IC, TLP1230 WG8-0291-

87 Motor, pick-up (M5) RH7-1350-0

103 PCA, paper pick-up RG5-1860-0

501 Screw, tapping, pan head, M4 x 10 XB4-7401-0

Registration frame assembly



Figure 231. Registration frame assembly

Table 66. Registration frame assembly parts


— Registration frame assembly RG5-3007-00


3 Arm, sensor RB1-6417-0

Registration roller assembly



Fi 232 R i i ll bl

Feeder assembly



Tray 1 pick-up assembly



Tray 1 assembly



Delivery assembly



Delivery cover assembly



Figure 237 Delivery cover assembly

Transfer belt assembly



Figure 238 Transfer belt assembly

Fuser assembly





Table 74. Fuser assembly parts


— Fuser assembly (120V)

Fuser assembly (220V)

RG5-3060-0

RG5-3061-0



y ( )

8 Lever, holding, right RB1-9704-0

9 Lever, holding, left RB1-9705-0

25 Lever, release RB1-9748-0

PCA assembly location diagram



Figure 241. PCA assembly location diagram

Table 75. PCA assembly parts

2,000-sheet input unit covers and



Figure 242. 2,000-sheet input unit covers and doors

Table 76. 2,000-sheet input unit cover and door parts


71 Cover, back RB2-2519-0

72 Cassette size labels RS5-8611-0



73 Cassette size plate RB1-6894-0

74 Casters XZ9-0442-0

75 Feed and separation rollers RF5-1834-0

76 Cover, front (with LED window) RF5-2568-077 Cover, left RF5-2646-0

78 Locating pin, metal (positioning) RF5-2556-0

79 Tray 4 RG5-3845-0

80 Paper deck drive assembly RG5-3851-0

81 Paper deck drive bushing RS5-1399-082 Paper pick-up assembly RG5-3843-0

83 Roller, pick-up RF5-1835-0

84 Plate paper limit back RG5-4201-0

85 Plate paper limit middle RG5-3849-0

86 Plate paper reference front RF5-3850-0

87 Cover, rIght RB1-7832-0

88 Cover, top (label included) RG5-2644-0

89 Vertical transfer unit (VTU) RG5-3854-0

Kit 1 Screws kit (2,000-sheet input unit) RY7-5044-0



Table 77. 2,000-sheet input unit internal component parts


91 Front LED PCA with holder and cable RG5-4204-0

92 Cable, main RG5-3919-0



93 Metallic retaining spring (spring leaf) RB1-7835-0

94 Metallic retaining tab (plate stop) RB1-7677-0

95 Outriggers RG5-4205-0

96 Paper deck PCA RG5-3908-097 Paper quantity sensor PCA assembly RG5-2166-0

98 Paper size sensor PCA assembly RG5-2168-0

99 Power supply cable RG5-3909-0

100 Power supply fuse 250V/3.15A VD7-1893-1

101 Spring, tension RS5-2561-0102 Universal power supply assembly RG5-4021-0

Kit 1 Screws kit (2,000-sheet input unit) RY7-5044-0

Multi-bin mailbox components



Table 78. Multi-bin mailbox component parts (1 of 3)


20 User LED PCA (with cable) C4785-6051

21 Adjustable fixed caster C4785-6051



22 Attachment assembly (rod, bracket, cables) C4785-6051

23 Blind cover C4785-6050

24 Face-down bin C4785-6050

25 Face-up bin C3764-6050

26 Cover, front C4785-6050

27 Exchange multi-bin mailbox assemblyNote: You must have a 2,000-sheet inputunit in order to install a multi-bin mailbox.

C4785-6950

28 Multi-bin mailbox assembly

(product number C4785A)Note: You must have a 2,000-sheet inputunit in order to install a multi-bin mailbox.

C4785-6050

29 Multi-bin mailbox controller (with metal box) C4785-6050

30 Caster, fixed C4785-6051

31 Cover, top C3764-6055

Kit 1 Plastic parts1G Spacer plastic

C4785-6051

Kit 3 Hardware3A Screw, Torx3B Screw, Torx, T20, M4 x 103D Screw, Torx, T20, M4 x 12

C4785-6052





32 Flipper assembly (with cable “request”) C4785-6050

33 Head assembly (with metallic tape) C4785-6050



34 Metallic tape and housing assembly C4785-6050

Kit 1 Plastic parts1A Anti-curl string1B Spring for anti-curl string1C Pulley, small bottom

C4785-6051

Kit 3 Hardware3C Screw, Torx, Tapping T20, M4 x 103D Screw, Torx, T20, M4 x 123E Screw, Torx, Tapping T103F Screw, Caster

C4785-6052





35 Diagnostic LED PCA (with cable) C4785-6051

36 Attachment clip C4785-6051



37 Back cover C4785-6050

38 Delivery head position motor C3764-6050

39 Input paper guide (nosepiece) C3764-6056

40 Power supply C4785-6050

41 Transport belt motor (with fan) C4785-6051

Kit 1 Plastic parts1D Cable holder round gasket1E Flat cable holder edge1F Flat cable holder

C4785-6051

Kit 2 Cables2A Switch, interlock2B Delivery head motor cable2C Flipper sensor controller cable2D Flipper encoder controller2E Flipper motor controller2F ESD cable2G Delivery head assembly, flat cable

C4785-6052

Kit 3 Hardware3C Screw, Torx, Tapping T20, M4 x 10

C4785-6052

Numerical parts list

Table 81. Numerical parts list




5021-0337 PCL/PJL Technical Reference Package

5021-8956 HP LaserJet Printer Family Paper Specification

Guide

5091-6456 HP Peripherals Connectivity Solutions Guide

5966-5171 HP JetDirect Software Installation Guide (English)

92215N HP LocalTalk cable kit

92215S Macintosh DIN-8 printer cable

C2934A HP Color LaserJet transparencies (letter-sized),

50 sheets

C2936A HP Color LaserJet transparencies (A4-sized), 50sheets

C2946A IEEE-1284 compliant parallel cable of 3 m(approximately 10 ft) with 25-pin male/micro36-pin male “C” size connector

C2985A EIO hard disk

C2986-60001 Hard disk, internal

C3763-60502 C-link cable (from formatter board to the 2,000-sheet input unit)

C3764-60505 Face-up bin

C3764-60507 Delivery head position motor

C3764-60555 Cover, top

C3764 60561 Input paper guide (nosepiece)

C3983-40007 Control panel overlay, German

C3983-40008 Control panel overlay, Spanish

C3983-40009 Control panel overlay, Dutch

C3983 40010 C t l l l N i

Table 81. Numerical parts list (continued)




C3983-40010 Control panel overlay, Norwegian

C3983-40011 Control panel overlay, Swedish

C3983-40012 Control panel overlay, Finnish

C3983-40013 Control panel overlay, Danish

C3983-40014 Control panel overlay, Italian

C3983-40015 Control panel overlay, Russian

C3983-40016 Control panel overlay, Czech

C3989-60115 HP Color LaserJet 8500, 8500N, 8500 DN

Service and Support CD-ROM

C3983-67902 HP Color LaserJet 8500, 8500N, 8500 DN Self-

Paced Training Kit (NTSC)

C3893-67903 HP Color LaserJet 8500, 8500N, 8500 DN Self-

Paced Training Kit (PAL)

C3983-67905 Formatter assembly

C3983-90919 HP Color LaserJet 8500, 8500 N, 8500 DN Quick Reference Guide (English)

C3989-90901 HP Color LaserJet 8500, 8500 N, 8500 DN Getting Started Guide (English)

C3989-90937 HP Color LaserJet 8500, 8500 N, 8500 DN

User’s Guide (English)

C4140A 4-MB synchronous DIMMNOTE: For all DIMM products, you must installDRAM DIMMs in synchronized pairs—for

l t 4 MB DIMM

C4153A Drum kitImaging drum

2 air filtersHand wipe

C4154A Transfer kit





C4154A Transfer kitTransfer drumTransfer beltCleaning rollerCharcoal filter

Hand wipe



C4179A HP Color LaserJet soft gloss paper (letter-sized),200 sheets

C4179B HP Color LaserJet soft gloss paper (A4-sized),200 sheets

C4781-60500 Power box

C4782-60501 Duplexer (product number C4782A)

C4782-69501 Exchange duplexer

C4785-60500 Multi-bin mailbox assembly(product number C4785A)

Note: You must have a 2,000-sheet input trayin order to install a multi-bin mailbox.

C4785-60501 Power supply

C4785-60510 Fixed casters

C4785-60511 Adjustable fixed caster

C4785-60512 Attachment clip

C4785 60513 Multi bin mailbox repackaging kit





C4785-60513 Multi-bin mailbox, repackaging kit

C4785-60514 Diagnostic LED PCA (with cable)

C4785-60515 User LED PCA (with cable)

C4785-60516 Attachment assembly (rod, bracket, cables)

C4785-60518 Transport belt motor (with fan)

C4785-60519 Plastic parts1A Anti-curl string1B Spring for anti-curl string1C Pulley, small bottom1D Cable holder round gasket

1E Flat cable holder edge1F Flat cable holder1G Spacer plastic

C4785-60520 Cables2A Switch, interlock2B Delivery head motor cable2C Flipper sensor controller cable2D Flipper encoder controller2E Flipper motor controller2F ESD cable2G Delivery head assembly, flat cable

C4785-60521 Hardware3A Screw, Torx3B Screw, Torx, T20, M4 x 103C Screw, Torx, Tapping T20, M4 x 103D Screw, Torx, T20, M4 x 123E Screw, Torx, Tapping T10

J3112A Token Ring

J3113-61003 PCA, 10/100Base-T

J3113A 10/100Base-TX

RA0-0008-000CN Lever shutter





RA0 0008 000CN Lever, shutter

RA0-0026-000CN Cover, inner 2

RA0-0027-000CN Cover, inner 3

RA0-0065-000CN Cover, left rear

RA0-0067-000CN Cover, right rear

RA0-0068-000CN Cover, hinge

RA0-0069-000CN Cover, front right

RA0-0073-000CN Stop, flip-up media

RA0-0074-000CN Cover, right rear lower cornerRA0-0078-000CN Cover, auxiliary

RA0-0079-000CN Support, cover

RA0-0083-000CN Cover, waste toner tray

RA0-0112-000CN Lever, paper height

RB1-4497-000CN Strap, front door support

RB1-5153-000CN Latch, roller action

RB1-6409-000CN Spring, torsion

RB1-6417-000CN Arm, sensor

RB1-6463-000CN Rod, power switch

RB1-6480-000CN Cover, left lower

RB1-6484-000CN Stopper, open/close

RB1-6492-000CN Cover, power switch

RB1-6557-000CN Flag, paper sensing

RB1-6558-020CN Spring, torsion

RB1-6692-000CN Lever paper sensing





RB1 6692 000CN Lever, paper sensing

RB1-6894-000CN Cassette size plate

RB1-6909-000CN Spring, leaf

RB1-7677-000CN Metallic retaining tab (plate stop)

RB1-7832-020CN Cover, right

RB1-7835-000CN Metallic retaining spring (spring leaf)

RB1-9401-000CN Duct, rear lower air

RB1-9403-000CN Cover, gear

RB1-9424-000CN Gear, 11TRB1-9526-000CN Roller, tray 1 pick-up

RB1-9537-000CN Cover, density sensor

RB1-9547-000CN Cover, tray 1 side gear

RB1-9580-000CN Lever, registration roller

RB1-9586-000CN Cover, sensor

RB1-9617-000CN Brush, cleaning

RB1-9675-000CN Spring, compression

RB1-9682-000CN Duct

RB1-9704-000CN Lever, holding, right

RB1-9705-000CN Lever, holding, left

RB1-9748-000CN Lever, release

RB1-9836-000CN Filter, charcoal

RB1-9928-000CN Media jam knob

RB1-9948-000CN Cover, cable

RB1-9955-000CN Gear, 14T





9955 000C Gea ,

RB1-9956-000CN Gear, 14T

RB2-0005-000CN Rail, PCA

RB2-0057-000CN Cover, left upper

RB2-2519-000CN Cover, back

RF0-0003-000CN Latch, roller action

RF0-0012-000CN Cover, fan

RF0-0013-000CN Cover, inner 4

RF5-1396-000CN Rail, tray 3RF5-1484-000CN Plate, end

RF5-1834-000CN Feed and separation rollers

RF5-1834-000CN Roller, feed

RF5-1835-000CN Roller, pick-up

RF5-1995-000CN Cover, right subassemblyRF5-2025-000CN Holder, fan

RF5-2036-000CN Plate, duct mount

RF5-2556-000CN Locating pin, metal (positioning)

RF5-2568-000CN Cover, front (with LED window)

RF5-2646-000CN Left cover

RF5-2701-000CN Hinge, stopper (delivery)

RG5-1845-000CN PCA, cassette-size sensing

RG5-1851-000CN Tray rail assembly

RG5-1859-000CN Arm, sensor

RG5-1860-000CN PCA, paper pick-up





p p p p

RG5-1884-000CN PCA, tray 1

RG5-2166-000CN Paper quantity sensor PCA assembly

RG5-2168-000CN Paper size sensor PCA assembly

RG5-2644-000CN Cover, top (label included)

RG5-3007-000CN Registration frame assembly

RG5-3008-000CN Transfer mount assembly

RG5-3009-000CN Registration roller assembly

RG5-3010-000CN Transfer swing assemblyRG5-3022-000CN Face-up solenoid assembly

RG5-3023-000CN Shield case assembly

RG5-3026-000CN PCA, high-voltage converter 1

RG5-3031-000CN Connector holder assembly

RG5-3032-000CN PCA, photosensorRG5-3033-000CN Developing rotary

RG5-3034-000CN Sensor assembly, color toner

RG5-3036-000CN PCA, main relay

RG5-3037-000CN PCA, controller board

RG5-3039-000CN Transfer drum

RG5-3044-000CN Transfer drum contact assembly

RG5-3061-000CN Fuser assembly (220V)

RG5-3065-000CN Drum/cartridge drive assembly

RG5-3066-000CN Main drive assembly

RG5-3067-000CN Delivery drive assembly





RG5-3079-000CN PCA, photosensor

RG5-3080-000CN PCA, photosensor

RG5-3084-000CN PCA, carousel motor (M1)

RG5-3085-000CN PCA, subrelay

RG5-3087-000CN Lever assembly, black cartridge

RG5-3089-000CN Cassette crossmember assembly

RG5-3096-000CN Cover assembly, right lower

RG5-3097-000CN Cable, mainRG5-3104-000CN Cable, delivery

RG5-3108-000CN Delivery cover assembly

RG5-3111-000CN Transfer drum cleaner holder assembly

RG5-3131-000CN Sensor slider assembly

RG5-3132-000CN Paper pick-up assemblyRG5-3134-000CN Tray 1 assembly

RG5-3144-000CN Cable, sensor

RG5-3147-000CN Cable, delivery connector

RG5-3843-000CN Paper pick-up assembly

RG5-3845-000CN Tray 4

RG5-3849-000CN Plate paper limit middle

RG5-3934-000CN Sensor assembly, toner waste

RG5-3936-000CN Laser/scanner unit

RG5-3942-000CN Cable, main motor

RG5-3943-000CN PCA, high-voltage converter 2





RG5-3961-000CN PCA, cartridge release lever

RG5-3962-000CN Hinge, stopper (tray 1 delivery assembly)

RG5-3966-000CN Separation discharge high-voltage converterPCA

RG5-3973-000CN Static charge eliminator assembly

RG5-3975-000CN Cleaning roller assembly

RG5-3980-000CN Preconditioning exposure LED assembly

RG5-3992-000CN PCA, fusing delivery sensor

RG5-4021-000CN Universal power supply assembly

RG5-4201-000CN Plate paper limit back

RG5-4204-000CN Front LED PCA with holder and cable

RG5-4205-000CN Outriggers

RH3-0211-000CN High-voltage converter 1

RH3-0228-000CN High-voltage converter 2

RH3-0234-000CN Separation discharge high-voltage converter

RH3-2185-000CN Power supply assembly (110V)

RH3-2187-000CN Power supply assembly (220V)

RH7-1323-000CN Motor, main (M4)RH7-1325-000CN Motor, carousel (M1)

RH7-1328-000CN Motor cartridge (M3)

RS5-1319-000CN Bushing

RS5-1399-000CN Bushing, paper deck drive

RS5-2465-000CN Spring, tension

RS5-2561-000CN Spring, tension





RS5-2697-000CN Spring, torsion

RS5-2698-000CN Spring, torsion

RS5-2719-000CN Spring, compression

RS5-8380-000CN Label, “CAUTION”

RS5-8611-000CN Cassette size labels

RY7-5044-000CN Screw kit (2,000-sheet input unit)

VD7-1893-151CN Power supply fuse 250V/3.15A

WC4-5136-000CN Switch, black toner cartridge (SW644)WC4-5150-000CN Switch, toner cartridge cover (SW672)

WG8-0291-000CN Photo-interrupter, IC, TLP1230




XA9-0849-000CN Screw, RS, M3 x 6



XA9-0951-000CN Screw, w/washer, M3 x 8, quantity 10XB4-7401-007CN Screw, tapping, pan head, M4 x 10

XD2-1100-502CN Ring E

Alphabetical parts list

Table 82. Alphabetical parts list

Description Part number

10/100Base-TX J3113A



110-volt fuser kitFuser6 paper rollersHand wipe

C4155A

220-volt fuser kitFuser6 paper rollersHand wipe

C4156A

4-MB synchronous DIMMNOTE: For all DIMM products, you must install

DRAM DIMMs in synchronized pairs—forexample, two 4-MB DIMMs.

C4140A

8-MB synchronous DIMM C4141A



64-MB synchronous DIMM C3913AAdjustable fixed caster C4785-60511

Arm, sensor RB1-6417-000CN

RG5-1859-000CN

Attachment assembly (rod, bracket, cables) C4785-60516

Attachment clip C4785-60512

Black toner cartridge C4149A

Cable, DC power RG5-3921-000CN

Cable, delivery RG5-3104-000CN

Cable, delivery connector RG5-3147-000CN

Cable, main RG5-3097-000CN

Table 82. Alphabetical parts list (continued)




RG5-3919-000CN

Cable, main motor RG5-3942-000CN

Cable, power signal RG5-3922-000CN

Cable, sensor RG5-3144-000CN

Cables2A Switch, interlock2B Delivery head motor cable2C Flipper sensor controller cable2D Flipper encoder controller

2E Flipper motor controller2F ESD cable2G Delivery head assembly, flat cable

C4785-60520

Carousel stop assembly RG5-3053-000CN

Cassette crossmember assembly RG5-3089-000CN

Cassette size labels RS5-8611-000CN

Cassette size plate RB1-6894-000CN

Casters XZ9-0442-000CN

Casters, fixed C4785-60510

Cleaning roller assembly RG5-3975-000CN

Clutch, transfer belt press (CL4) RH7-5168-000CNConnector holder assembly RG5-3031-000CN

Control panel overlay, Czech C3983-40016

Control panel overlay, Korean C3983-40003

Control panel overlay, Norwegian C3983-40010

Control panel overlay, Portuguese C3983-40005

Control panel overlay, Russian C3983-40015





Control panel overlay, Simplified Chinese C3983-40004

Control panel overlay, Spanish C3983-40008

Control panel overlay, Swedish C3983-40011

Control panel overlay, Traditional Chinese C3983-40002

Cover assembly, front RG0-0112-000CN

Cover assembly, inner left RG0-0104-000CN

Cover assembly, left upper RG0-0113-000CN

Cover assembly, rear RG0-0115-000CNCover assembly, right lower RG5-3096-000CN

Cover assembly, top RG0-0111-000CN

Cover, auxiliary RA0-0078-000CN

Cover, back C4785-60505

RB2-2519-000CNCover, cable RB1-9805-000CN

RB1-9948-000CN

Cover, carousel stop RB1-9789-000CN

Cover, density sensor RB1-9537-000CN

Cover, fan RF0-0012-000CN

Cover, front C4785-60504

Cover, left lower RB1-6480-000CN

Cover, left rear RA0-0065-000CN

Cover, left upper RB2-0057-000CN

Cover, power switch RB1-6492-000CN





Cover, rear fan housing RG0-0017-000CN

Cover, right RB1-7832-020CN

Cover, right rear RA0-0067-000CN

Cover, right rear lower corner RA0-0074-000CN

Cover, right subassembly RF5-1995-000CN

Cover, sensor RB1-9586-000CN

Cover, top C3764-60555

Cover, top (label included) RG5-2644-000CNCover, tray 1 side gear RB1-9547-000CN

Cover, waste toner tray RA0-0083-000CN

Cyan toner cartridge C4150A

Delivery assembly RG0-0110-000CN

Delivery cover assembly RG5-3108-000CNDelivery drive assembly RG5-3067-000CN

Delivery head position motor C3764-60507

Density sensor assembly RG5-3057-000CN

Developing rotary RG5-3033-000CN

Diagnostic LED PCA (with cable) C4785-60514

Drum kitImaging drum

C4153A

Ethernet combo (10Base-T, BNC, andLocalTalk)

J3111A

Exchange duplexer C4782-69501Exchange multi-bin mailbox assembly C4785-69500

Face-down bin C4785-60502





Face down bin C4785 60502

Face-up bin C3764-60505

Face-up solenoid assembly RG5-3022-000CN

Fan 1 (FM1) RH7-1330-000CN

Fan 2 (FM2) RH7-1373-000CN

Fan 3 (FM3) RH7-1393-000CN

Feed and separation rollers RF5-1834-000CN

Feeder assembly RG5-3059-000CN

Filter, charcoal RB1-9836-000CN

Filter, large air RB1-9807-000CN

Filter, small air RB1-9808-000CN

Flag, paper sensing RB1-6557-000CN

Flipper assembly (with cable “request”) C4785-60509

Formatter assembly C3983-67905

Front LED PCA with holder and cable RG5-4204-000CN

Fuser assembly (120V) RG5-3060-000CN

Fuser assembly (220V) RG5-3061-000CN

Gear, 11T RB1-9424-000CNGear, 14T RB1-9955-000CN

RB1-9956-000CN

High-voltage converter 1 RH3-0211-000CN

High-voltage converter 2 RH3-0228-000CN

Hinge, stopper (delivery) RF5-2701-000CN

Hinge, stopper (tray 1 delivery assembly) RG5-3962-000CN

H ld f RF5 2025 000CN





Holder, fan RF5-2025-000CN

Holder, flapper RB1-9751-000CN

HP Color LaserJet 8500, 8500 N, 8500 DN

Getting Started Guide (English)

C3989-90901


Quick Reference Guide (English)C3983-90919

HP Color LaserJet 8500, 8500N, 8500 DN

Self-Paced Training Kit (NTSC)

C3983-67902


Self-Paced Training Kit (PAL)

C3893-67903


Service and Support CD-ROM

C3989-60115


User’s Guide (English)C3989-90937

HP Color LaserJet soft gloss paper (A4-sized),200 sheets C4179B

HP Color LaserJet soft gloss paper (letter-sized),200 sheets

C4179A

HP Color LaserJet transparencies (A4-sized),50 sheets

C2936A

HP Color LaserJet transparencies (letter-sized),50 sheets

C2934A

HP JetDirect Software Installation Guide 5966-5171

Label, “CAUTION” RS5-8380-000CN

Laser/scanner unit RG5-3936-000CN

Latch, roller action RB1-5153-000CN

RF0-0003-000CN

Lever assembly black cartridge RG5 3087 000CN





Lever assembly, black cartridge RG5-3087-000CN

Lever assembly, pressure RG5-3045-000CN

Lever assembly, transfer drum RG5-3046-000CN

Lever, holding, left RB1-9705-000CN

Lever, holding, right RB1-9704-000CN

Lever, left upper door RB1-6485-000CN

Lever, paper height RA0-0112-000CN

Lever, paper sensing RB1-6692-000CN

Lever, registration roller RB1-9580-000CN

Lever, release RB1-9748-000CN

Lever, right lower cover RB1-6485-000CN

Lever, right upper door RB1-6485-000CN

Lever, shutter RA0-0008-000CNLocating pin, metal (positioning) RF5-2556-000CN

Macintosh DIN-8 printer cable 92215S

Magenta toner cartridge C4151A

Main drive assembly RG5-3066-000CN

Media jam knob RB1-9928-000CN

Metallic retaining spring (spring leaf) RB1-7835-000CN

Multi-bin mailbox assembly(product number C4785A)NOTE: You must have a 2,000-sheet input unit

in order to install a multi-bin mailbox.

C4785-60500

Multi-bin mailbox controller (with metal box) C4785-60508

Multi-bin mailbox repackaging kit C4785-60513





Multi bin mailbox, repackaging kit C4785 60513

Multi-bin mailbox, shipping lock kit C4787-60503

Multi-bin mailbox, short C-link cable adapter C4785-70001

Outriggers RG5-4205-000CN

Paper deck drive assembly RG5-3851-000CN

Paper deck drive bushing RS5-1399-000CN

Paper deck PCA RG5-3908-000CN

Paper pick-up assembly RG5-3132-000CN

RG5-3843-000CN

Paper quantity sensor PCA assembly RG5-2166-000CN

Paper size sensor PCA assembly RG5-2168-000CN

PCA, 10/100Base-T J3113-61003

PCA, carousel motor (M1) RG5-3084-000CNPCA, cartridge release lever RG5-3961-000CN

PCA, cassette-size sensing RG5-1845-000CN

PCA, controller board RG5-3037-000CN

PCA, fusing delivery sensor RG5-3992-000CN

PCA, high-voltage converter 1 RG5-3026-000CN

PCA, high-voltage converter 2 RG5-3943-000CN

PCL/PJL Technical Reference Package 5021-0337

Photo-interrupter, IC, TLP1230 WG8-0291-000CN



Plastic parts C4785-60519





Plastic parts1A Anti-curl string1B Spring for anti-curl string1C Pulley, small bottom

1D Cable holder round gasket1E Flat cable holder edge1F Flat cable holder1G Spacer plastic

C4785 60519

Plate paper limit back RG5-4201-000CN

Plate paper limit middle RG5-3849-000CN

Plate paper reference front RF5-3850-000CN

Plate, duct mount RF5-2036-000CN

Plate, end RF5-1484-000CN

Power box C4781-60500

Power supply C4785-60501

Power supply assembly (110V) RH3-2185-000CN

Power supply assembly (220V) RH3-2187-000CN

Power supply cable RG5-3909-000CN

Power supply fuse 250V/3.15A VD7-1893-151CN

Preconditioning exposure LED assembly RG5-3980-000CN

Rail, PCA RB2-0005-000CN

Rail, tray 3 RF5-1396-000CN

Roller, pick-up RF5-1835-000CN

Roller, tray 1 pick-up RB1-9526-000CN

Screw kit (2,000-sheet input unit) RY7-5044-000CN

Screw, RS, M3 x 6 XA9-0849-000CN

Screw, tapping, pan head, M4 x 10 XB4-7401-007CN





Screw, tapping, pan head, M4 x 10 XB4 7401 007CN

Screw, TP, M3 x 6, quantity 10 XA9-0836-000CN

Screw, TP, M4 x 8, quantity 10 XA9-0926-000CN

Screw, w/washer, M3 x 8, quantity 10 XA9-0951-000CN

Screw, w/washer, M4 x 12, quantity 4 XA9-0940-000CN

Sensor assembly, color toner RG5-3034-000CN

Sensor assembly, toner waste RG5-3934-000CN

Sensor slider assembly RG5-3131-000CN

Separation discharge high-voltage converter RH3-0234-000CN

Separation discharge high-voltage converterPCA

RG5-3966-000CN

Shield case assembly RG5-3023-000CN

Spring, compression RB1-6486-000CN

RB1-9675-000CN

RS5-2719-000CN

Spring, leaf RB1-6909-000CN

Spring, left upper door lever RB1-6486-000CN

Spring, right lower door lever RB1-6486-000CNSpring, tension RS5-2465-000CN

RS5-2561-000CN

Stopper, open/close RB1-6484-000CN

Strap, front door support RB1-4497-000CN

Support, cover RA0-0079-000CN

Switch, black toner cartridge (SW644) WC4-5136-000CN

Switch, toner cartridge cover (SW672) WC4-5150-000CN





, g ( )

Token Ring J3112A

Transfer belt assembly RG5-3047-000CN

Transfer drum RG5-3039-000CN

Transfer drum cleaner holder assembly RG5-3111-000CN

Transfer drum contact assembly RG5-3044-000CN

Transfer kitTransfer drum

Transfer beltCleaning rollerCharcoal filterHand wipe

C4154A

Transfer mount assembly RG5-3008-000CN

Transfer swing assembly RG5-3010-000CN

Transport belt motor (with fan) C4785-60518

Tray 1 assembly RG5-3134-000CN

Tray 1 pick-up assembly RG5-3054-000CN

Tray 4 RG5-3845-000CN

Tray rail assembly RG5-1851-000CN

Tray, face-up RB1-6491-000CN

Universal power supply assembly RG5-4021-000CN



Index

Symbols- Value + key 66

Numbers

AA3-sized media

paper size detepaper size dete

sheet input



100Base-TX networks 62, 44610Base2 networks 6310Base-T networks 62, 446

11-by-17-inch sized media. See media12-by-18.5-inch sized media. See media2,000-sheet input unit

back cover 273cable connections 61communication error 330components 271controller board 182

controller PCA 279covers and doors 492description 180DIP switches 430error 330, 331front cover 272front LED PCA assembly 280LEDs 182, 427, 429left cover 274location 38main drive assembly 282motor test 431normal/diagnostic mode switch 182paper path 185paper pick-up assembly 278paper size sensor assemblies 283paper size switch assembly 284pick-up and feed system 182power supply 180, 182, 281, 428printer model included with 19

sheet inputSee also media

A4-sized mediaoverriding with paper size detepaper size dete

sheet inputsetting for wideSee also media

A5-sized mediapaper size deteSee also media

absorption of coloaccess denied 3accessories

available 19information fromordering 49, 5paper handlingparts list 446

acoustic emissionadditive color proadjusting

color balance 4colors 415neutral axis 41

Adobe PostScripair filter door 36

air filters. See filtealphabetical partsaltitude specificaanti-curl strings (

(assemblies, continued)delivery frame 451drum/cartridge drive 267, 451, 472face-down output 225face-up exit 236feeder 233, 482formatter 37

front 227fuser 451, 488high-voltage converter 1 262high-voltage converter 2 264illustration of major 450

BB4-sized media

paper size detepaper size dete

sheet inputB5-sized media

paper size deteSee also media

back cover2,000-sheet inpmulti-bin mailb

background tone



jleft 229left cover feeder 450main gear 261

paper pick-up 243, 450PCA 491rear 246registration frame 450registration roller 239, 450, 481right 237separation discharge converter 268solenoid 451

top 223transfer belt 450, 487tray 1 450, 484tray 1 pick-up 244, 450, 483tray 2 475tray 3 474

assemblies (2,000-sheet input unit)front LED PCA 280

main drive 282paper pick-up 278paper size sensor 283paper size switch 284quantity switch 283

assemblies (multi-bin mailbox)attachment 309delivery head 192, 303flipper 192, 291metallic tape and housing 297

assistance. See supportatmospheric pressure 23

background tonebanding

14 mm 411black, brown, o

less than 10 mbelts

jams 437replace frequetransport 192See also transf

bidirectional modbinding 73

bins. See left (facbins; top (fa

blackdetail value 79smooth value 7streaks 408stripes 407

black and white p

black toner cartridcam assembly guide assemblillustration 124installing 87location 104replace frequeswitch 175

toner level deteblank page 400blind cover (multBNC

bufferEIO overflow 316parallel I/O overflow 317scan error 330

bumps on printed page 410buttons. See keys on control panel

CC5-sized media. See mediacables

C-link 61, 188coaxial 63

(cartridges, contininstalling color location 104replace frequentoner not instal

CASSETTE modCCC (Customer C

54CCCC (Canadian

Assist Linecharcoal filter

installing 106



coaxial 63connection 60interface 61parallel 64

parts list 447ThinLAN 63

calibrationcolor density 148flipper 437message 334

Canadian Customer Care Center (CCCC)Assist Line 54

Canadian DOC regulations 39Cancel Job key 66canceling

job 334proof and print jobs 72

capacitycircuit 21input trays 28

media in multi-bin mailbox 30media in printer 28

card stock. See mediacarousel

color toner error 323control process 150position sensor 150stop solenoid 151

carousel button switch 175carousel motor

description and illustration 160location 159

location 104replace frequen

charging roller

illustration 124repetitive defeccharts, timing. Se

checklistspaper path 378pretroubleshoo

circles on page 4circuits

capacity 21fuser abnormafusing heater shigh-voltage polaser/scanner mpower distributPower Save 15

cleaning

density sensorimages 138imaging drum post charger 9toner from fabrtransfer chargetransfer drum waste toner tra

cleaning rollercharging procecontrol processillustration 124

(clearing, continued)top output bin jams 339transfer drum jams 340unexpected paper size jams 340

C-link cableconnection 37, 61description 188

clutchesfeed roller 177names and locations 177registration roller 177transfer belt press 177

commandscarriage return line feed 77

Commercial #10-communications Configuration Meconfiguration pag

printing 71, 35printing continuunderstanding using to verify

configuring



tray 1 pick-up roller 177clutches (2,000-sheet input unit)

main drive 182

names and locations 181VTU 182CLx. See clutches; clutches (2,000-sheet

input unit)coaxial cables 63cold reset (CR)

message 341paper size 81

Color Adjust Menu 79color adjust page 415color cartridge sensor 227color page count 80color toner carousel 124color toner cartridges

illustration 124installing 88

lever sensor 146location 104replace frequency 105sensor 145, 173toner level detection 145

color toner lever sensor 173colored media

using 32See also media

colorsadjustment 414, 415density calibration 148

Append CR to binding 73clearable warn

color values 79control panel 6default orientatdefault paper sduplex printingform length 76I/O timeout 78input trays 72,

low and out memanual feed 7media sizes 91media types 9number of copipaper destinatparallel advancPCL font inform

PCL symbol sePower Save moprinter personawide A4 77

conformity, declaconnecting

cables 60printer to netwo

consumablesinstalling 85location 104low and out me

control paneldisplay language 84illustration and description 66LEDs 66location 35menu maps 68messages 316

removing 223control panel overlay

changing 65parts list 448

controllerl i 332

Customer Care C54

Customer Care OCustomer InformCustomer Suppocyan

detail value 79

smooth value 7cyan toner cartrid

installing 88location 104replace freque



electronic error 332RAM error 330

controller boards

2,000-sheet input unit 182, 279EPH (external paper-handling) 180,188

multi-bin mailbox 190, 192, 299printer 253

copies, configuring 76corona wire. See transfer chargercounts

total color pages printed 80total pages duplexed 81total pages printed 80

Courier default settings 77covers

front 208front right 209left lower 216

left rear 213left upper 215location 206parts list 452, 457rear 222right lower assembly 221right rear 220right upper assembly 217right upper subassembly 219top 211

covers (2,000-sheet input unit)back 273

Ddamaged

media 341transfer drum 3

dark transparencData Indicator ligdata, corrupt PJLDealer Responsedealer, finding 44declarations of co

defaultsCourier setting factory 355fonts 76number of copiorientation 76paper size 76PCL symbol se

resetting factordefects

input tray switcrepetitive 419repetitive ruler sensors 379

deleted fonts 35delivery assembl

delivery coverassembly 486switch 175

delivery drive ass

delivery rollers 124extended sensor (multi-bin mailbox)

190demonstration page, printing 353denied access 334density sensor

cleaning 100, 335

description 148error 324removing 242

depth of printer 22detail color value 79de eloper DSD heels repetiti e defects

DPI (dots per incDRAM (dynamic

installing 93test 82

Driver Distributiodrivers. See printdrum

imaging error 3imaging life outimaging not insimaging problenew transfer 3transfer damag



developer DSD wheels, repetitive defects421

developer motor test 83

developer roller repetitive defects 421diagnostic LED (multi-bin mailbox) 307diagnostic LEDs (2,000-sheet input unit)

182diagnostics

2,000-sheet input unit 431formatter board 81multi-bin mailbox 434

switch 182diagrams, circuit 440DIMMs (dual inline memory modules)

accessories 19errors 322expanding memory 19installing 93ordering 445

parts list 446removing 356slot locations 37test 82

DIN-8 connection 62DIP switches (2,000-sheet input unit) 428,

430directories, printing file 71disk. See hard diskdithering 127diverter for paper out of position 328DL-sized media. See media

transfer damagtransfer jams 3transfer not ins

transfer probledrum kitlow and out meparts list 447replace freque

drum motor 159description andtest 83

Drum MSDS 45drum/cartridge drillustration 451illustration and removing 267

drumscleaning transfillustration 124

installing imagiinstalling translocation 104replace freque

dual inline memorDIMMs (dumodules)

dull transparenciduplex printing

configuring 73process 192total page coun

EECCC (European Customer Care Center)

Assist Line 54EIO (enhanced input/output)

accessories parts list 446buffer overflow 316connection broken 317

features 20initializing 343not functional 344printing page 71slot locations 37

EIO h d di k

(errors, continuedillegal output 3input feed 325internal 329laser 320laser scanner messages 316

motor 329multi-bin mailbNVRAM 333,PostScript printpower-on self-tRAM 329 330



EIO hard diskparts list 446

eject rollers (multi-bin mailbox) 192

ejector motor (multi-bin mailbox) 190electrical

schematics 440specifications 21systems 152

electrostatic discharge (ESD) 203electrostatic latent image 131, 132embossed media 33

EMI statement, Korea 43emissionsacoustic 22ozone 46

empty tray 359engine

settings 81test 344

enhanced input/output (EIO). See EIO(enhanced input/output)envelopes

cautions for printing 31sealed 379See also media

environmentalautomatic change control 147

operating requirements 24specifications 21EP process. See image formationEPH (external paper-handling) controller

RAM 329, 330scan buffer 33

ESD (electrostati

Ethernetaccessories 44network conne

European CustomAssist Line

event log 353clearing 81description 364

printing 71exchanging partsExecutive-sized mexpanding memoexpired

fuser and papeimaging drum

external paper-ha

board 180

Fface-down bins (face-down outputface-down output

output binface-down tray d

face-up bin (multface-up exit asseface-up output bi

output bin

fan 3motor location 159operation 165

fansleft output failure 328rear input failure 327rear output failure 326

thermistor 165fault log 82Fax Information Retrieval Support

Technology (HP FIRST)Europe 52U S 52

fixing. See fusingflipper

assembly 192,calibration 437error 437

jam 437roller motor 19

flip-up media stopFMx. See fan 1; ffonts

configuring PCconfiguring PCconfiguring PC



U.S. 52FCC regulations 39features

control panel 66EIO 20fonts 20model differences 19personality 20print speeds 20resolution 20user interface 20

feed roller clutch 177feed rollers2,000-sheet input unit 182, 185printer 124

feeder assembly 233, 482feeding

error 325manual 350process 167speeds 167

field replaceable units (FRUs)2,000-sheet input unit 271ordering 51parts list 449

filesoperation failed 342printing directories 71

filtersinstalling air 110installing charcoal 106

configuring PCconfiguring PCCourier setting

deleted 351deleted downloPostscript (PS)printing list 354standard 20support 52TrueType 20

form length, conf

formatter assembformatter board 2diagnostics 81location 36, 3parts list 449serial number video test (VX

formatter pan 24

frequency for repfront assemblies front cover

2,000-sheet inpmulti-bin mailbremoving 208switch 175

front door 35front LED PCA as

input unit) front right cover FRUs (field repla

(fuser, continued)location 104new 352not installed 346repetitive defects 424temperatures 154

fuser kit

installing 113life detection 144low and out messages 75parts list 447percentage life remaining 81replace frequency 105

heavy mediausing 32See also media

height of printer Hewlett-Packard

ordering inhigh capacity out

mailboxhigh-voltage conv

assemblies 26removing 263removing PCA

high-voltage conv



replace frequency 105resetting life count 78

fusing

and delivery process 179delivery sensor 166, 173, 178, 179heater safety circuit 154process 141rollers 124, 141

Gghosting 406

glossyprint speeds 20using 32See also media

Go key 66graphics resolution 20guide, input paper. See input paper guide

(multi-bin mailbox)

Hhalf-toning 127handling

media 26toner 45

hard diskaccessories 19

failure 342full 342initializing 75, 353

high voltage convassemblies 26removing 265

removing PCAhigh-voltage convdischarge h

high-voltage powhorizontal

lines (all colorslines (one colorlines (yellow or

HP ASAP (AutomProgram) HP Automated S

(ASAP) 52HP Customer CaHP dealer, findingHP Direct 53HP Distribution oHP Driver DistribHP Fax Informati

TechnologyEurope 52U.S. 52

HP FIRST (Fax InSupport Te

Europe 52U.S. 52

HP JetDirect inteprint serve

HP LaserJet prin

II/O (input/output)

parallel advanced functions 78resetting 78resetting ports 355switching 20timeout 78

I/O Menu 78identification of printer 34illegal output error 325image formation

cleaning 138cleaning roller charging 138

inside left panel installing

air filters 110black toner carcables 60, 61charcoal filter consumables 8

DIMMs 93fuser kit 113imaging drum imaging drum kparts 199printer on netw



cleaning roller charging 138fusing 141imaging drum cleaning 140

laser beam exposure 132post charging 135preconditioning exposure 131primary charging 132process 129secondary transfer 136troubleshooting 383

images

early or late on page 399printed repeatedly 406resolution 20skewed 399troubleshooting defects 386

imaging drumcartridge 124cleaning process 140

detecting expiration 142error 342illustration 124installing 110kit 110laser beam exposure 132life out 343location 104

not installed 347preconditioning exposure 131primary charging 132repetitive defects 424

prollers 113safety 203

transfer belt 10transfer chargetransfer drum transfer kit 106verifying printe

insufficient memointerface

cable 61

features 20interlock switch (306

internal componeinternal print servISO B5-sized meITD (intermediate

transfer druItem key 66

J jams

delivery head adelivery head pdetection proceduplexer 335

flipper area 43fuser 336general media input tray 338

job separator mode (multi-bin mailbox)186

jobscanceling 334canceling proof and print 72cleared because memory out 351processing 354

JPOSTD (Double Post Card) sized media.See media

Kkeys on control panel

description 66

LEDs2,000-sheet inpcontrol panel 6multi-bin mailbpreconditioningstatus 94

left (face-up) outp

delivery roller full 349, 437full sensor 190illustration 124location 35paper path test



description 66See also individual keys

kits

drum parts list 447fuser parts list 447replace frequency 105transfer life low 357transfer life out 357transfer parts list 447

Korean EMI statement 43

Llabels. See medialanguage

control panel overlay 65not available 353selecting display 84

lasererror 320

illustration 124motor lock detection circuit 158process 157removing 224safety statement 43scanner error 317statement for Finland 44

laser beam

exposure on imaging drum 132process 157

LaserJet printing demonstration 71

p p psolenoid 177,

left assemblies 2

left coverfeeder assembsensor 173

left cover (2,000-left lower cover 3left rear cover 21left upper cover legal-sized media

paper size detepaper size detesheet input

See also medialength, configurinletterhead. See mletter-sized media

overriding with paper size detepaper size dete

sheet inputSee also media

lever, unlocked tolife

drum kit low 34drum kit out 34fuser and papefuser and papetransfer kit low transfer kit out

line feed command 77lines

horizontal (all colors) 402horizontal (one color) 401horizontal (yellow or black) 408

list server 50lists

font 71parts 443LocalTalk

accessories 446networks 62parts list 447

(maintenance, costrategy 203user-replaceab

maintenance unitmanual feed 74,manuals, orderinmatching colors

Material Safety D52maximum media MBM. See multi-media

capacities (mul



port 62lock detection for laser/scanner motor 158

logserror 426event 71, 81, 353, 364fault 82

loose toner 405low toner 356lower

fuser heater 159

fusing roller 124, 141VTU rollers 185

MM1. See carousel motorM2. See drum motorM3. See cartridge motorM4. See main motor

M5. See pick-up motorMacintosh cable parts list 447magenta

detail value 79smooth value 79

magenta toner cartridgeinstalling 88location 104

replace frequency 105mailbox mode (multi-bin mailbox) 186mailbox. See multi-bin mailboxmain drive (2 000 sheet input unit)

capacities (princautions for pri

configuring defconfiguring desconfiguring sizeconfiguring typduplexer specierror feeding frhandling 26input tray capa

jams 340overriding typeparts list 447print speeds 2requirements 2selecting 26specifications storing 27to avoid 33trays. See tray

traysSee also envel

paper; tranmedia size sensimemory

accessories 19expanding 19external error (full 355installing DIMM

menusColor Adjust 79Configuration 75control panel 68I/O 78Information 71Paper Handling 72

Printing 76Proof and Print 72Resets 78Service Mode 80

messagescold reset 341

motors (multi-bindelivery head delivery head pdelivery head rejector 190flipper roller witnames and loc

transport belt 1mottled print 408MSDS (Material S

52multi-bin mailbox

accessories 19



control panel 316language used 84

low and out 75multi-bin mailbox 436numbered 316unnumbered 334

metallic tape and housing assembly (multi-bin mailbox) 297

minimum media sizes 28misfed paper 341

model numbers 34models of printer, different features 19modes

CASSETTE 90FIRST 90OHT 167Power Save 75, 153, 351service 80tray 1 72, 90

modes (multi-bin mailbox)bidirectional 187

job separator 186self-test 436unidirectional 187virtual stacker 186

Monarch-sized media. See mediamotors

carousel 159, 160, 257cartridge 159, 162, 254developer 83

anti-curl stringsattachment ass

back cover 287blind cover 29capacities 30clearing jams 3communicationcommunicationcomponents 2controller board

controller PCA delivery head adelivery head pdescription 18diagnostic LEDdiagnostic testserror 332flipper assembfront cover 287full 349input paper guiinterlock switchlocation 38messages 436metallic tape an

297not attached cooperating modeoutput bin full 3overflow 186

(multi-bin mailbox, continued)troubleshooting 434unlatched 437user status LED PCA 308

multipart forms 33multipurpose tray. See tray 1

Nnetworks

100Base-TX 6210Base2 6310Base-T 62accessories parts list 446

orientationconfiguring defmedia in input

output binsconfiguring desfull 349, 355,

jams 339

multi-bin mailboverflow 186See also left (fa

(face-downoverflow bin (muoverhead transpa

t



pconnections 62printer connection 62

troubleshooting 439non-volatile random access memory

(NVRAM). See NVRAM (non-volatile random access memory)

numberformatter board serial 80printer model 34printer serial 80

numerical parts lists 502NVRAM (non-volatile random access

memory)damaged 438recoverable error 333settings 80unrecoverable error 333

OOHT (overhead transparency). See

transparenciesOHT mode 167online

indicator 67support 50

operating

environment requirements 24environment specifications 21specifications 21

transparenoverriding

A4 with letter 7letter with A4 7media type/siz

ozonefilter 46safety 46

P

package contentspages

blank 400configuration 3demonstration image early or printing color terings (circles) o

simplified 350total color printtotal count 80wrinkled 378wrong request

panel, inside left paper

clearing 341

cold reset size configuring defconfiguring desdiverter out of p

paper delivered to bin sensor (multi-binmailbox) 190

paper delivered to head sensor (multi-binmailbox) 190

paper entry sensor2,000-sheet input unit 182multi-bin mailbox 190

paper exit sensor (2,000-sheet input unit)182paper guide. See input paper guide (multi-

bin mailbox)paper handling accessories

location 38model differences 19

parallel cableconnection 64parts list 447

parallel I/O (input317

parallel port 37,part numbers. Se

partsexchanging 51HP Direct 53ordering 49, 4phone number removing and iuser replaceab



model differences 19Paper Handling Menu 72

paper jams. See jamspaper path2,000-sheet input unit 185carousel obstruction 323checklist 378door open 345illustration 166

jams 340multi-bin mailbox 191tests 83, 365tests (multi-bin mailbox) 435troubleshooting 378

paper photo sensors 241paper pick-up

assembly 450illustration 169, 171process 167, 168

paper pick-up (2,000-sheet input unit) 182paper pick-up assembly

illustration and parts list 476location 450removing 243

paper quantity switches (2,000-sheet inputunit) 182, 183

paper size detection switches

2,000-sheet input unit 183printer 176

paper size sensors (2,000-sheet input

user-replaceabwebsite inform

parts listsalphabetical 51by part 449cables 447consumables, o

446control panel ocovers and doo

unit) 492covers and doodelivery assemdelivery cover adelivery drive aDIMMs 446drum kit 447drum/cartridge EIO 446EIO hard disk feeder assembfixing assemblyformatter boardfuser kits 447internal compointernal hard dilower cassette

media 447memory 446multi-bin mailbo

(parts lists, continued)toner cartridges 447transfer assembly 487transfer kits 447upper cassette assembly 475

PCAsassemblies 491

carousel motor 256high-voltage converter 1 262high-voltage converter 2 264main relay 266power supply circuit 155separation discharge high-voltage

converter 268

portsBNC 62LocalTalk 62parallel 37, 64resetting I/O 3

post chargercleaning 99

post charging unillustration 124process 135

POST error 333PostScript (PS)

configuring 75errors 75



converter 268subrelay 228

tray 2 and tray 3 media size sensing269PCAs (2,000-sheet input unit)

controller 279front LED 280

PCAs (multi-bin mailbox)controller 299diagnostic LED 307user status LED 308

PCBs. See PCAs; PCAs (2,000-sheetinput unit); PCAs (multibin mailbox)

PCL (printer command language)configuring 75configuring font information 76memory full 351personality support 20printing font list 71symbol sets 77

personalitiesconfiguring 75supported 20

photo sensors 241pick-up motor

description and illustration 164location 159

pick-up process. See paper pick-uppick-up rollers

2,000-sheet input unit 182, 185

errors 75font list 71

fonts 20memory full 35personality sup

powerbutton 35connection 36consumption 2cord connectiodistribution circpack 61requirements 2switch 175

Power Save modcircuit 153configuring 75electrical specifan operation 1on 351signal process

power supplycircuit 155removing 252

power supply (2,0description 180illustration 428

removing 281power supply (mpower-on self-tes

(print, continued)smeared 404speckled 403speeds 20

print serveraccessories 19connecting to network 62

model included with 19network connection 62printer

covers and doors 452dimensions 22front view 35messages 316

Proof and Print MPS. See PostScrPSx. See sensor

Qquantity switch as

input unit)

Rradio frequency rraised spots on pRAM (random ac

controller error



messages 316model and serial numbers 34

personality could not be run 351personality does not exist 353rear view 36serial number 80stand 35supplies 447verifying installation 92weight 22

printer command language (PCL). See PCL (printer command language)

printer control language (PCL). See PCL(printer command language)

printer control panel. See control panelprinter drivers

color selection 385handled by HP Driver Distribution

Center 53obtaining 50request form 52

printer hard disk. See hard diskprinting

color test pages 79configuration page 71, 353continuous configuration pages 71demonstration page 353

EIO pages 71event log 71, 353file directories 71

internal error 3random access m

(random acread only memory

only memoReady Indicator lrear assemblies rear cover 222rear left cover 21recycling

consumables 1toner cartridges

reference materiarefilling toner cartregistration

area jams 338color values 8incorrect 399

plate 399registration frame

illustration and location 450

registration rollerassembly 239,clutch 177location 124

paper sensor 1removing 239

regulations

replacing. See installing; removingrequirements

media 26power 21site 24space around printer 25ventilation 24

resetcold 81, 341, 376switch 175

Resets Menu 78resetting

factory defaults 78fuser life count 78

rollers (2,000-shefeed 182, 185lower and uppepick-up 182, 1separation 182

rollers (multi-bin meject 192

ROM (read only mfirmware test 8installing 93

ruler, repetitive d

Ssafety



fuser life count 78I/O 78

I/O ports 355transfer life count 78residual toner 136, 138, 140resolution 20resource save

area full 351data full 355

restoring factory settings 355reverse stepper motor sensor (multi-bin

mailbox) 190right assemblies 237right cover

subassembly 219switch 175

right cover (2,000-sheet input unit) 276right front cover 209right lower cover 35right lower cover assembly 221right rear cover 220right upper cover 35right upper cover assembly 217rings on page 403RJ-45 connection 62roller, cleaning

charging process 138

control process 150rollers

illustration 124

safetylaser statemen

ozone 46removal and retoner 45

scan buffer error scanner

illustration 124motor lock detemotor not turnin

process 157removing 224sealed envelopesSelect key 66selecting

binding 73color 385display langua

media 26self-test mode 43sensors

carousel positiocleaning densicolor cartridge color toner cartcolor toner leve

color toner levedefective or studensity 148, 2density error 3

(sensors, continued)paper out (tray 2) 173paper out (tray 3) 173photo paper 241pick-up unit cover 173pick-up unit paper 166, 173registration roller paper 166, 167, 171,

173reverse stepper motor (multi-binmailbox) 190

separation 173temperature error 323temperature/humidity 147test 83

server, list 50service agreemeservice LEDs (2,0Service Materials

ordering inService Mode Meservice notes

HP FIRST 52ordering 50service tool requisetting

color registratiocolor values 79

settings



thermistor 173

thermo switch 173toner lock 227top (face-down) output bin delivery 173,

178, 179top (face-down) output bin paper full

173, 179tray 1 paper 171tray 1 paper width 170tray 2 173tray 3 173

sensors (2,000-sheet input unit)names and locations 181paper entry 182paper exit 182paper size 182paper tray empty 182paper tray raised 182test 432vertical transfer unit (VTU) closed 182

sensors (multi-bin mailbox)delivery rollers extended 190left (face-up) output bin full 190names and locations 189paper bin empty 190paper bin full 190

paper delivered to bin 190paper delivered to head 190paper entry 190

gfactory 355

NVRAM 80shutter loose 323simplified page 3site requirementssizes

cold reset papeconfiguring defconfiguring meconfiguring PCconfiguring traymedia in duplexmedia in input overriding medprinter 22

skewed images sliders problem 4SLx. See solenoiSME (Support Ma

from 49smeared print 40SMO (Service Ma

ordering frosmooth color valusoftware

matrix 52

ordering 50support from H

solenoids

specificationsacoustic emissions 22altitude 21atmospheric pressure 23consumable storage 23electrical 21humidity 21

image skew 399media 26media storage 27operating environment 21printer dimensions 22temperature 21, 23

speckled print 403

(support, continutechnical 52third-party 439websites 50

Support Materialsinformation

switches

black toner carcarousel buttondefective 378delivery cover/fimaging drum names and locpaper size dete



speeds

factors affecting 20paper feed 167print 20

splotchy print 408spots

background toner scatter 407springs, tension (2,000-sheet input unit)

285stacker output bin full 355statements

Finland laser 44Korean EMI 43laser safety 43VCCI (Japan) 43warranty 55

status LEDs. See LEDsstatus lights. See LEDs

storageconsumable specifications 23media 27printer specifications 21too many devices 356

stray toner 410streaks (yellow or black) 408stripes (black, brown, or orange) 407

subrelay PCA 228subscribing to list server 50subtractive color process 126

paper size dete

paper size detepower 175reset 175right cover 175test print 175thermo 173toner cartridge

switches (2,000-sDIP 428, 430names and locnormal/diagnospaper quantity paper quantity paper size assepaper size dete

switches (multi-binterlock 190,

names and locswitching I/O 20SWx. See switche

input unit); mailbox)

symbol sets for P

Ttechnical assistantechnical trainingtemperature

(tests, continued)DIMM 82drum motor 83engine 344firmware ROM 82formatter video 82hard disk 82

input trays 83installation 92output bins 83paper path 83, 365printing color pages 79sensor 83

tests (2,000-sheet input unit)

(toner, continuedwaste 140waste level 14

Toner Cartridge Mtoner cartridges

cover switch 1installing black

installing color location 104recycling 55refilling 55replace frequewarranty 55

toner lock sensor



motor 431sensor 432standalone 430

tests (multi-bin mailbox)paper path 435power-up sequence 435standalone 434

text resolution 20thermistor

fan 165sensors 173

thermo switches 173thermographic inks 33ThinLAN cables, using 63third-party support 439timeout for I/O 78timing charts

description 192

full color 11-by-17-inch sized page 197full color letter-sized page 195WAIT period 193

Token Ring 446toner

background scatter 407black level detection 147cartridge not installed 345

cartridges parts lists 447cleaning from fabric 87cleaning from waste tray 102

tools required fortop (face-down) o

delivery sensorlocation 35paper full sensopaper path test

top assemblies 2top cover (multi-btop cover assembtop output bin

full 357 jams 339multi-bin mailbo

totalcolor pages priduplex page copage count 80

training 50

transfer beltassembly 450,control processillustration 124installing 106

jams 437location 104press clutch 17

repetitive defecreplace freque

transfer charger

(transfer drum, continued)not installed 348repetitive defects 422replace frequency 105

transfer jams 338transfer kit

installing 106

life detection 144life low 357life out 357low and out messages 75parts list 447percentage life remaining 81replace frequency 105

i lif 78

tray 2assembly 475configuring 73illustration 124last page sensolocation 35media size sen

paper level senpaper out senspaper path testpaper pick-up paper size detepick-up solenosensor 173S l



resetting life count 78transfer roller repetitive defects 422transparencies

automatic detection 167defects 412dull or dark 412for ink jet printers 33parts list 447print speeds 20process 167reducing curl 378sensors 167, 171, 173using 31See also media

transport belt (multi-bin mailbox) 192transport belt motor (multi-bin mailbox)

190, 192, 294tray 1

assembly 450, 484configuring 72error feeding media from 328illustration 124last page sensor 171, 173location 35paper path test 83paper pick-up 170, 171

paper sensor 171, 173paper width sensor 170pick-up assembly 244, 450, 483

See also traystray 3

assembly 474configuring 73illustration 124location 35media size senpaper level senpaper out senspaper path testpaper pick-up paper size detesensor 173See also trays

tray 4configuring 73

jams 340removing 277See also 2,000

tray pick-up solentrays

capacities 28configuring 72defective switcempty 359

jams 338

media specificawaste toner 10See also tray 1

(troubleshooting, continued)registration plate 399repetitive defects 419transparencies 412See also diagnostics; errors

TrueType fonts 20typeface support 52

types, configuring media 90, 91

Uunexpected

paper size jams 340paper size/type 318

unidirectional mode (multi-bin mailbox)

waste tonercleaning 102collection 140feed roller 140level detection tray 102

watermarks 33

wavypatterns 101websites for suppweight

media in duplexmedia in input printer 22t di 403



( )187

unknown media 357unlatched multi-bin mailbox 437unlocked toner lever 349unrecoverable error 333upper

fuser heater 159fusing roller 124, 141VTU rollers 185

user guide parts list 448user interface features 20user-replaceable parts 205

VValue key 66VCCI statement (Japan) 43ventilation requirements 24

vertical transfer unit (VTU). See VTU(vertical transfer unit)

virtual stacker mode (multi-bin mailbox)186

VTU (vertical transfer unit)closed sensor 182clutch 182door open 345

illustration 185process 183removing 275

wet media 403wheels, developewidth of printer 2wiring diagrams wrinkled pages 3write protected hwrong page requ

Y

yellowdark print 413detail value 79smooth value 7streaks 408

yellow toner cartrinstalling 88location 104

replace freque







Documents

CLJ 8500 Service Manual