Service SRDF1

SRDF-1 (MCA) S/M

SERVICEMANUAL

Published in Jan. ’993AL70761Revision 1

R

SR

DF

-1

SRDF-1

SERVICEMANUAL

SRDF-1

Safety precautions

This booklet provides safety warnings and precautions for our servicepersonnel to ensure the safety of their customers, their machines as wellas themselves during maintenance activities. Service personnel areadvised to read this booklet carefully to familiarize themselves with thewarnings and precautions described here before engaging inmaintenance activities.

Safety warnings and precautions

Various symbols are used to protect our service personnel andcustomers from physical danger and to prevent damage to theirproperty. These symbols are described below:

DANGER: High risk of serious bodily injury or death may result frominsufficient attention to or incorrect compliance with warningmessages using this symbol.

WARNING: Serious bodily injury or death may result from insufficientattention to or incorrect compliance with warning messagesusing this symbol.

CAUTION: Bodily injury or damage to property may result frominsufficient attention to or incorrect compliance with warningmessages using this symbol.

SymbolsThe triangle ( ) symbol indicates a warning including dangerand caution. The specific point of attention is shown insidethe symbol.

General warning.

Warning of risk of electric shock.

Warning of high temperature.

indicates a prohibited action. The specific prohibition isshown inside the symbol.

General prohibited action.

Disassembly prohibited.

indicates that action is required. The specific actionrequired is shown inside the symbol.

General action required.

Remove the power plug from the wall outlet.

Always ground the copier.

1. Installation Precautions

WARNING

• Do not use a power supply with a voltage other than that specified.Avoid multiple connections to one outlet: they may cause fire or electricshock. When using an extension cable, always check that it isadequate for the rated current. ...............................................................

• Connect the ground wire to a suitable grounding point. Not groundingthe copier may cause fire or electric shock. Connecting the earth wireto an object not approved for the purpose may cause explosion orelectric shock. Never connect the ground cable to any of the following:gas pipes, lightning rods, ground cables for telephone lines and waterpipes or faucets not approved by the proper authorities. ........................

CAUTION:

• Do not place the copier on an infirm or angled surface: the copier maytip over, causing injury. ...........................................................................

• Do not install the copier in a humid or dusty place. This may cause fireor electric shock. .....................................................................................

• Do not install the copier near a radiator, heater, other heat source ornear flammable material. This may cause fire. .......................................

• Allow sufficient space around the copier to allow the ventilation grills tokeep the machine as cool as possible. Insufficient ventilation maycause heat buildup and poor copying performance. ...............................

• Always handle the machine by the correct locations when moving it. ....

• Always use anti-toppling and locking devices on copiers so equipped.Failure to do this may cause the copier to move unexpectedly ortopple, leading to injury. ..........................................................................

• Avoid inhaling toner or developer excessively. Protect the eyes. If toneror developer is accidentally ingested, drink a lot of water to dilute it inthe stomach and obtain medical attention immediately. If it gets into theeyes, rinse immediately with copious amounts of water and obtainmedical attention. ....................................................................................

• Advice customers that they must always follow the safety warnings andprecautions in the copier’s instruction handbook. ...................................

2. Precautions for Maintenance

WARNING

• Always remove the power plug from the wall outlet before startingmachine disassembly. ............................................................................

• Always follow the procedures for maintenance described in the servicemanual and other related brochures. ......................................................

• Under no circumstances attempt to bypass or disable safety featuresincluding safety mechanisms and protective circuits. .............................

• Always use parts having the correct specifications. ...............................

• Always use the thermostat or thermal fuse specified in the servicemanual or other related brochure when replacing them. Using a pieceof wire, for example, could lead to fire or other serious accident. ...........

• When the service manual or other serious brochure specifies adistance or gap for installation of a part, always use the correct scaleand measure carefully. ...........................................................................

• Always check that the copier is correctly connected to an outlet with aground connection. .................................................................................

• Check that the power cable covering is free of damage. Check that thepower plug is dust-free. If it is dirty, clean it to remove the risk of fire orelectric shock. .........................................................................................

• Never attempt to disassemble the optical unit in machines using lasers.Leaking laser light may damage eyesight. ..............................................

• Handle the charger sections with care. They are charged to highpotentials and may cause electric shock if handled improperly. .............

CAUTION

• Wear safe clothing. If wearing loose clothing or accessories such asties, make sure they are safely secured so they will not be caught inrotating sections. .....................................................................................

• Use utmost caution when working on a powered machine. Keep awayfrom chains and belts. .............................................................................

• Handle the fixing section with care to avoid burns as it can beextremely hot. .........................................................................................

• Check that the fixing unit thermistor, heat and press rollers are clean.Dirt on them can cause abnormally high temperatures. .........................

• Do not remove the ozone filter, if any, from the copier except forroutine replacement. ...............................................................................

• Do not pull on the AC power cord or connector wires on high-voltagecomponents when removing them; always hold the plug itself. ..............

• Do not route the power cable where it may be stood on or trapped. Ifnecessary, protect it with a cable cover or other appropriate item. ........

• Treat the ends of the wire carefully when installing a new charger wireto avoid electric leaks. ............................................................................

• Remove toner completely from electronic components. .........................

• Run wire harnesses carefully so that wires will not be trapped ordamaged. ................................................................................................

• After maintenance, always check that all the parts, screws, connectorsand wires that were removed, have been refitted correctly. Specialattention should be paid to any forgotten connector, trapped wire andmissing screws. ......................................................................................

• Check that all the caution labels that should be present on the machineaccording to the instruction handbook are clean and not peeling.Replace with new ones if necessary. ......................................................

• Handle greases and solvents with care by following the instructionsbelow: .....................................................................................................· Use only a small amount of solvent at a time, being careful not to

spill. Wipe spills off completely.· Ventilate the room well while using grease or solvents.· Allow applied solvents to evaporate completely before refitting the

covers or turning the main switch on.· Always wash hands afterwards.

• Never dispose of toner or toner bottles in fire. Toner may causesparks when exposed directly to fire in a furnace, etc. .........................

• Should smoke be seen coming from the copier, remove the powerplug from the wall outlet immediately. ..................................................

3. Miscellaneous

WARNING

• Never attempt to heat the drum or expose it to any organic solventssuch as alcohol, other than the specified refiner; it may generate toxicgas. .........................................................................................................

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CONTENTS

I THEORY AND CONSTRUCTION SECTION1-1 Specifications

1-1-1 Specifications .............................................................................. 1-1-11-2 Mechanical Construction

1-2-1 Part names and their functions .................................................... 1-2-11-2-2 Machine cross section ................................................................. 1-2-21-2-3 Drive system ................................................................................ 1-2-31-2-4 Mechanical construction .............................................................. 1-2-5

II ELECTRICAL SECTION2-1 Electrical Parts Layout

2-1-1 Electrical parts layout .................................................................. 2-1-12-2 Detection of Paper Misfeed

2-2-1 Original misfeed detection ........................................................... 2-2-12-2-2 Original misfeed detection conditions .......................................... 2-2-2

2-3 Operation of the PCBs2-3-1 DF driver PCB ............................................................................. 2-3-1

III SET UP AND ADJUSTMENT SECTION3-1 Installation

3-1-1 Unpacking and installation .......................................................... 3-1-13-2 Assembly and Disassembly

3-2-1 Precautions for assembly and disassembly ................................ 3-2-13-2-2 Procedure for assembly and disassembly ................................... 3-2-2

3-3 Troubleshooting3-3-1 Image formation problems ........................................................... 3-3-13-3-2 Original misfeeds ......................................................................... 3-3-33-3-3 PCB terminal voltages ................................................................. 3-3-73-3-4 Electrical problems .................................................................... 3-3-103-3-5 Mechanical problems ................................................................ 3-3-14

3-4 AppendixesTiming chart No. 1 .................................................................................. 3-4-1Timing chart No. 2 .................................................................................. 3-4-2Timing chart No. 3 .................................................................................. 3-4-3DF driver PCB ......................................................................................... 3-4-4Connection diagram ................................................................................ 3-4-5Wiring diagram ........................................................................................ 3-4-6

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CONTENTS

1-1 Specifications

1-1-1 Specifications..................................................................................... 1-1-1

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1-1-1

1-1-1 Specifications

Original feed system ………… Automatic feedOriginals ……………………… SheetsOriginal weights ……………… Single-sided original mode: 35 – 160 g/m2

Double-sided original mode: 50 – 120 g/m2

Original paper ………………… Plain paper, thermal paper, art paper, colored paperOriginal sizes ………………… A3 – A5R, folio/11" × 17" – 51/2" × 81/2"RNo. of originals ………………… Up to 50 sheets (A3, B4, folio, 11" × 17", 81/2" × 14")

Up to 70 sheets (up to A4/11" × 81/2")Up to 50 sheets in the auto selection modeArt or thermal paper must be fed individually.

Power source ………………… Electrically connected to the copierMachine dimensions ………… 553 (W) × 478 (D) × 121 (H) mm

213/4" (W) × 1813/16" (D) × 43/4" (H)Weight ………………………… Approx. 10.5 kg/23.1 lbs

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CONTENTS

1-2 Mechanical Construction

1-2-1 Part names and their functions .......................................................... 1-2-11-2-2 Machine cross section ....................................................................... 1-2-21-2-3 Drive system ...................................................................................... 1-2-31-2-4 Mechanical construction .................................................................... 1-2-5

(1) Original feed section ................................................................. 1-2-5Original feed timing ................................................................... 1-2-7

(2) Original switchback section ...................................................... 1-2-8Operation of original switchback ............................................. 1-2-10

(3) Original conveying section ...................................................... 1-2-11Original switchback/conveying timing ..................................... 1-2-13

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1-2-1

1-2-1 Part names and their functions

Figure 1-2-1

1 Original table2 Original insert guides3 Left cover4 Top cover

5 Eject guide6 SRDF open lever7 Slit glass8 Original set indicator

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1-2-2

1-2-2 Machine cross section

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1-2-3

1-2-3 Drive system

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(As viewed from machine rear)

Figure 1-2-3 Drive system (inside rear of machine)

1 Original feed motor pulley2 Pulley 35/22/223 Idle gear 264 Original feed clutch gear5 DF original feed pulley 286 DF forwarding pulley 207 Tension pulley8 Original feed drive belt9 DF forwarding belt

0 DF registration pulley 28/18! Idle gear 15@ Idle gear 20# Switchback gear 18$ DF registration drive belt% Gear 22/35^ Original conveying motor pulley& Gear 28* Original conveying drive belt 1

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1-2-4

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8

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91

0 3

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(As viewed from machine front)

Figure 1-2-4 Drive system (inside front of machine)

1 Lower original conveying pulley 25/182 Gear 18/253 Eject gear 184 Middle original conveying pulley 185 Upper original conveying pulley 186 JAM release gear 24

7 Joint gear 148 JAM release gear 149 Tension pulley0 Eject drive belt! Conveying drive belt 2

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1-2-5

1-2-4 Mechanical construction

(1) Original feed sectionThe original feed section consists of the parts shown in Figure 1-2-5. An original placed onthe original table is conveyed to the original switchback section or the original conveyingsection.

Figure 1-2-5 Original feed section

1 Original table2 DF forwarding pulleys3 DF original feed pulley4 DF separation pulley5 DF original feed upper guide6 DF original feed lower guide7 Original stopper

8 DF registration pulley9 DF registration roller0 DF registration guide! Original set switch (OSSW)@ Original feed switch (OFSW)# Original feed clutch (OFCL)$ Original feed solenoid (OFSOL)

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1-2-6

Figure 1-2-6 Original feed section block diagram

OFSW

OFSOL

OFCL

OFM

DFDPCB

CN

6-B

5

CN

5-B

12 –

C

N5-

B13

CN

5-A

5

CN

6-B

2

CN

5-B

1 –

CN

5-B

6

OSSW

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1-2-7

Original feed timing

Timing chart 1-2-1 Original feed (in double-sided original mode)

A The OFSOL A signal turns on for 200 ms and then the original feed solenoid (OFSOL)turns on, lowering the DF forwarding pulleys and releasing the original stopper toconvey the original forward. The original feed clutch (OFCL) simultaneously turns on,rotating the DF original feed pulley to start primary original feed. The original feedmotor (OFM) rotates forward during this operation.

B 556 OFM pulses after the leading edge of the original turns the original feed switch(OFSW) on, the original feed motor (OFM) turns off. 20 ms later, the rotation of themotor switches to the reverse direction and secondary original feed is performed byrotation of the DF registration roller.

C When the leading edge of the original turns the original switchback switch (OSBSW)on, the original feed clutch (OFCL) turns off.

D 288 OFM pulses plus 30 ms after the leading edge of the original turns the DF timingswitch (DFTSW) on, the original feed motor (OFM) turns off.

E After ejection of the original, as the original conveying motor (OCM) turns off, theOFSOL R signal turns on for 200 ms and the original feed solenoid (OFSOL) turns off.

OFSOL A

OFSOL R

OFCL

Fwd. rotation

Rev. rotation

OFSW

OSBSW

OCM

DFTSW

OffOFM

200 ms

200 ms

556 P* 20 ms

B C D EA

* Burst of OFM pulses

288 P* + 30 ms

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1-2-8

(2) Original switchback sectionThe original switchback section consists of the parts shown in Figure 1-2-7. The originalfrom the original feed section or original conveying section is reversed and conveyed tothe original conveying section.

Figure 1-2-7 Original switchback section

1 Switchback pulley2 Switchback roller3 Switchback feedshift guide4 Left switchback guide

5 Switchback guide6 Original switchback switch (OSBSW)7 Switchback feedshift solenoid (SBFSSOL)8 Switchback pressure solenoid (SBPSOL)

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5

6

2 7

3

4

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1-2-9

Figure 1-2-8 Original switchback section block diagram

DFDPCB

CN

6-A

5

CN

5-B

8

CN

5-A

2 –

CN

5-A

3

OSBSW

SBPSOL SBFSSOL

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1-2-10

Figure 1-2-9

Switchback pulley

Switchback feedshift guide

Operation of original switchback

In the double-sided original mode, the switchback feedshift solenoid (SBFSSOL) turns on,changing the position of the switchback feedshift guide. This switches the path of theoriginal to the original switchback section to where the original is fed.The switchback feedshift solenoid (SBFSSOL) then turns off, allowing the switchbackfeedshift guide to return to the original position by which the path of the original is switchedback to the original conveying section. The now reversed original is carried to the originalconveying section and the switchback pressure solenoid (SBPSOL) turns off, releasingthe switchback pulley to prevent an original jam in the original switchback section.

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1-2-11

(3) Original conveying sectionThe original conveying section consists of the parts shown in Figure 1-2-10. Synchronizedwith the copier scanning operation, the original is conveyed across the slit glass andejected when scanning is complete.In the double-sided original mode, the eject feedshift solenoid (EFSSOL) turns on, movingthe eject feedshift guide to switch the path of the original. When the scanning of the firstface (reverse face) of the original is complete, the original is conveyed to the originalswitchback section again.

Figure 1-2-10 Original conveying section

1 Upper original conveying pulley2 Upper original conveying roller3 Lower original conveying roller4 Front scanning pulley5 Middle original conveying roller6 Middle original conveying pulley7 Eject pulley8 Eject roller

9 Original conveying guide0 Eject feedshift guide! Upper eject guide@ Lower eject guide# Slit glass (copier)$ DF timing switch (DFTSW)% Eject feedshift solenoid (EFSSOL)

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1-2-12

Figure 1-2-11 Original conveying section block diagram

DFTSW

DFDPCB

CN

6-A

14

CN

5-A

7

CN

5-A

8 –

CN

5-A

13

EFSSOL

OCM

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1-2-13

Original switchback/conveying timing

Timing chart 1-2-2 Reversing the first face of the original

A During primary original feed, when the original feed switch (OFSW) turns on, theswitchback feedshift solenoid (SBFSSOL) also turns on, changing the position of theswitchback feedshift guide. This switches the path of the original to the originalswitchback section.

B 556 OFM pulses plus 20 ms after the original feed switch (OFSW) turns on, the rotationof the original feed motor (OFM) switches to the reverse direction and the original isconveyed to the switchback section by the rotation of the switchback roller. Theswitchback pressure solenoid (SBPSOL) simultaneously turns on to operate theswitchback pulley.

C 115 OFM pulses after the trailing edge of the original turns the original switchbackswitch (OSBSW) off, the switchback feedshift solenoid (SBFSSOL) turns off, theswitchback feedshift guide returns to the original position and the original feed motor(OFM) turns off simultaneously. 100 ms later, the original feed motor (OFM) rotatesforward, switching the rotational direction of the switchback roller. The original in theoriginal switchback section is then reversed and conveyed to the original conveyingsection.

D Simultaneously as the original feed motor (OFM) starts rotating forward, the originalconveying motor (OCM) turns on to convey the original onto the slit glass. The ejectfeedshift solenoid (EFSSOL) simultaneously turns on, changing the position of theeject feedshift guide. This switches the path of the original to the original switchbacksection.

E When the original is conveyed onto the slit glass, the DF timing switch (DFTSW) turnson. 288 OFM pulses later, the switchback pressure solenoid (SBPSOL) and the origi-nal feed motor (OFM) turn off simultaneously.

A B C D E

Fwd. rotationOff

556 P*

100 ms

288 P*115 P*

OFMRev. rotation

OFSW

SBFSSOL

SBPSOL

OSBSW

OCM

EFSSOL

DFTSW


20 ms

Scanning speed

Scanning speed

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1-2-14

Timing chart 1-2-3 Reversing of the second face of the original and ejection

A 564 OFM pulses after the scanning of the first face (reverse face) of the originalcompletes and the DF timing switch (DFTSW) turns off, the switchback pressuresolenoid (SBPSOL) turns on, operationg the switchback pulley.

B When the trailing edge of the original turns the original switchback switch (OSBSW)off, the eject feedshift solenoid (EFSSOL) turns off and the eject feedshift guide returnsto the original position, switching the path of the original to the eject section. Simulta-neously, the original conveying motor (OCM) turns off.

C 115 OFM pulses after the original switchback switch (OSBSW) turns off, theswitchback feedshift solenoid (SBFSSOL) turns off and the switchback feedshift guidereturns to the original position. Simultaneously, the original feed motor (OFM) turns off.

D 100 ms after the original feed motor (OFM) turns off, the motor starts rotating forward,switching the rotational direction of the switchback roller. The original in the originalswitchback section is then reversed and conveyed to the original conveying section.

E 327 OFM pulses plus 100 ms after the original feed motor (OFM) starts rotatingforward, the motor starts rotating forward again and the original conveying motor(OCM) turns on simultaneously, conveying the original onto the slit glass.

F 288 OFM pulses after the original is conveyed onto the slit glass and the DF timingswitch (DFTSW) turns on, the switchback pressure solenoid (SBPSOL) turns off.Simultaneously, the original feed motor (OFM) turns off.

G When the scanning request signal turns on, scanning of the second face (front face) ofthe original starts.

H 2337 OCM pulses plus 30 ms after scanning of the second face (front face) of theoriginal completes and the DF timing switch (DFTSW) turns off, the original conveyingmotor (OCM) turns off, completing the ejection of the original.

A B DC E F G H

Fwd. rotationOff

564 P*1 2337 P*2 + 30 ms

100 ms

Scanning request signal: On

115 P*1

Scanning speed

OFMRev. rotation

OFSW

SBFSSOL

SBPSOL

OSBSW

OCM

EFSSOL

DFTSW

*1 Burst of OFM pulses*2 Burst of OCM pulses

288 P*1

Scanning speed

327 P*1 + 100 ms

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CONTENTS

2-1 Electrical Parts Layout

2-1-1 Electrical parts layout ......................................................................... 2-1-1

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2-1-1

2-1-1 Electrical parts layout

Machine front Machine inside Machine rear

2

1

Figure 2-1-1 PCBs

1. DF driver PCB (DFDPCB) ................................... Controls electrical components ofSRDF.

2. Original set LED PCB (OSLEDPCB) ................... Indicates presence of originals onthe SRDF or an original jam.

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2-1-2

Figure 2-1-2 Switches and sensors

1. DF safety switch 1 (DFSSW1) ............................ Breaks the safety circuit when theSRDF is opened; resets originaljam detection.

2. DF safety switch 2 (DFSSW2) ............................ Breaks the safety circuit when theleft cover is opened; resetsoriginal jam detection.

3. Original set switch (OSSW) ................................. Detects the presence of anoriginal.

4. Original feed switch (OFSW) ............................... Detects primary original feed endtiming.

5. Original switchback switch (OSBSW) ................. Detects a paper jam in the originalswitchback section.

6. DF timing switch (DFTSW) .................................. Detects the original scanningtiming.

7. Original size length switch (OSLSW) .................. Detects the length of the original.8. Original size width switch (OSWSW) .................. Detects the width of the original.


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35

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6

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2-1-3

Figure 2-1-3 Motors

1. Original feed motor (OFM) .................................. Drives the original feed andswitchback sections.

2. Original conveying motor (OCM) ......................... Drives the original conveyingsection.


2

1

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2-1-4

Figure 2-1-4 Clutches and solenoids

1. Original feed solenoid (OFSOL) .......................... Moves the DF forwarding pulleysvertically.

2. Switchback feedshift solenoid (SBFSSOL) ......... Moves the switchback feedshiftguide.

3. Eject feedshift solenoid (EFSSOL) ...................... Moves the eject feedshift guide.4. Switchback pressure solenoid (SBPSOL) ........... Moves the switchback pulley.5. Original feed clutch (OFCL) ................................. Controls the drive of the DF

original feed pulley.


5 1

4

2

3

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CONTENTS

2-2 Detection of Paper Misfeed

2-2-1 Original misfeed detection ................................................................. 2-2-12-2-2 Original misfeed detection conditions ................................................ 2-2-2

(1) Initial movement confirmation JAM ........................................... 2-2-2(2) No paper feed ........................................................................... 2-2-2(3) An original jam in the original feed section ............................... 2-2-2(4) An original jam in the original conveying section ...................... 2-2-3(5) An original jam in the original switchback section ..................... 2-2-4

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2-2-1

2-2-1 Original misfeed detection

When an original jams, the machine immediately stops operation and a message isshown on the copier operation panel. The SRDF original set indicator also flashes red.To remove the jammed original, open the SRDF or the left cover.To reset the original misfeed detection, open and close the SRDF or left cover to turn DFsafety switch 1 or 2 off and on.

OCM

OSBSW

DFTSW

OFSW OFM

Figure 2-2-1 Original misfeed detection

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2-2-2

2-2-2 Original misfeed detection conditions

(1) Initial movement confirmation JAM• When the DF START signal is received, switches other than the original set switch

(OSSW) and the original size length switch (OSLSW) on the original table are on.

(2) No paper feed• During the primary feed of the second or later original in the single-sided or double-sided

original mode, the original feed switch (OFSW) does not turn on within 3150 originalfeed motor (OFM) pulses from the start of forward rotation of the original feed motor(OFM).

OFM

3150 P*

On (Fwd.)

Off

On

OffOFSW


Timing chart 2-2-1

(3) An original jam in the original feed section• During the secondary original feed in the single-sided original mode, the DF timing

switch (DFTSW) does not turn on within 3425 original feed motor (OFM) pulses from thestart of reverse rotation of the original feed motor (OFM). Alternatively, during continu-ous original feed in the single-sided original mode, the DF timing switch (DFTSW) doesnot turn on for the second time under the above conditions.

OFM

3425 P*

On (Rev.)

Off

On

OffDFTSW


Timing chart 2-2-2

• During the secondary original feed in the single-sided original mode, the original feedswitch (OFSW) has not turned off before the DF timing switch (DFTSW) turns off.

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2-2-3

• During original switchback operation in the double-sided original mode, the original feedswitch (OFSW) remains on when the original switchback switch (OSBSW) turns off.

OSBSWOn

Off

On

OffOFSW

Timing chart 2-2-3

(4) An original jam in the original conveying section• During the secondary original feed in the single-sided or double-sided original mode, the

DF timing switch (DFTSW) does not turn on within 10200 original conveying motor(OCM) pulses from the DF timing switch (DFTSW) turning on.

10200 P*On

OffDFTSW

* Burst of OCM pulses

Timing chart 2-2-4

• In the single-sided or double-sided original mode, the DF timing switch (DFTSW) turnsoff within 2016 original conveying motor (OCM) pulses from the DF timing switch(DFTSW) turning on.

2016 P*On

OffDFTSW


Timing chart 2-2-5

• While scanning the first face (reverse face) of an original in the double-sided originalmode, the original switchback switch (OSBSW) does not turn on within 3591 originalconveying motor (OCM) pulses from the DF timing switch (DFTSW) turning on.

DFTSW

3591 P*

On

Off

On

OffOSBSW


Timing chart 2-2-6

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2-2-4

(5) An original jam in the original switchback section• During the switchback operation of an original in the double-sided original mode, the

original switchback switch (OSBSW) does not turn on within 2520 original feed motor(OFM) pulses from the start of reverse rotation of the original feed motor (OFM).

OFM

2520 P*

On (Rev.)

Off

On

OffOSBSW


Timing chart 2-2-7

• During switchback operation of an original in the double-sided original mode, the originalswitchback switch (OSBSW) does not turn off within 5100 original feed motor (OFM)pulses from the original switchback switch (OSBSW) turning on.

5100 P*On

OffOSBSW


Timing chart 2-2-8

• During the secondary original feed in the double-sided original mode, the DF timingswitch (DFTSW) does not turn on within 1528 original conveying motor (OCM) pulsesfrom the original conveying motor (OCM) turning on.

Timing chart 2-2-9

OCM

1528 P*

On

Off

On

OffDFTSW


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CONTENTS

2-3 Operation of the PCBs

2-3-1 DF driver PCB.................................................................................... 2-3-1

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2-3-1

Figure 2-3-1 DF driver PCB block diagram

The DF driver PCB consists of the motor driver ICs. It mainly drives the original feed motor(OFM) and original conveying motor (OCM) in response to control signals from the copier.It also drives and routes the input and output signals and routes the 24 V DC supply toclutches and solenoids in the SRDF and the 5 V DC supply to switches.

Copier

24 V DC

24 V DC

24 V DC

OCM A

OCMMotordriver

IC

Motordriver

IC

OFM

OCM BOCM AOCM B

OFM A

Switches

Clutches, solenoids

OFM BOFM AOFM B

24 V DC

2-3-1 DF driver PCB

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CONTENTS

3-1 Installation

3-1-1 Unpacking and installation ................................................................. 3-1-1

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3-1-1

3-1-1 Unpacking and installation

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4

6

Figure 3-1-1

1 Bottom pads2 Top pad3 Plastic bag

• Installation manual• Instruction handbook

4 Outer case5 Machine cover6 Bar-code labels7 SRDF

3AL

CONTENTS

3-2 Assembly and Disassembly

3-2-1 Precautions for assembly and disassembly ....................................... 3-2-1(1) Precautions ............................................................................... 3-2-1

3-2-2 Procedure for assembly and disassembly ......................................... 3-2-2(1) Detaching and refitting the DF original feed pulley and

the DF forwarding pulleys ......................................................... 3-2-2(2) Detaching and refitting the DF separation pulley ...................... 3-2-5(3) Adjusting the DF center line ...................................................... 3-2-8(4) Adjusting the DF original scanning start position ...................... 3-2-9(5) Adjusting the DF original scanning end position ..................... 3-2-10(6) Adjusting magnification for copying using the DF ................... 3-2-11

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3-2-1

3-2-1 Precautions for assembly and disassembly

(1) Precautions• Be sure to turn the main switch off and disconnect the power plug before starting

disassembly.

3AL

3-2-2

Stop ring

Stop ring

Bushing

Bushing

Original feed pulley assembly

3-2-2 Procedure for assembly and disassembly

(1) Detaching and refitting the DF original feed pulley and the DF forwardingpulleys

Clean or replace the DF original feed pulley and the DF forwarding pulleys as follows.

Procedure1. Open the left cover.2. Remove the upper original feed section cover (two screws).3. Remove the two stop rings and then the original feed pulley assembly by sliding out

the bushings.

Figure 3-2-1

3AL

3-2-3

DF forwarding pulleys

DF forwarding belt

DF original feed pulley gear 28

DF original feed pulley

Original feed front shaft

Stop rings

One-way clutch

• Detaching the DF original feed pulley4. Remove the two stop rings and then the DF original feed pulley from the original feed

front shaft.

Figure 3-2-2 Detaching the DF original feed pulley

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3-2-4

• Detaching the DF forwarding pulleys5. Remove the stop ring and the DF forwarding belt on the DF forwarding pulley 20, and

then remove the DF forwarding pulleys from the forwarding shaft.6. Clean or replace the DF original feed pulley and the DF forwarding pulleys.7. Refit all removed parts.

• When fitting the DF original feed pulley and the DF forwarding pulleys, ensure thatthe side having the one-way clutch faces the machine rear.

Figure 3-2-3 Detaching the DF forwarding pulleys

DF forwarding pulleys

DF forwarding belt

DF forwarding pulley 20

Forwarding shaft

Stop ring

Bushing

One-way clutch

3AL

3-2-5

(2) Detaching and refitting the DF separation pulleyClean or replace the DF separation pulley as follows.

Procedure1. Open the left cover.2. Remove the upper original feed section cover (two screws).3. Remove the rear cover (two screws).4. Remove the fulcrum pin (one screw) and detach the 6-pin connector at the machine

rear to remove the original table.

Figure 3-2-4

Fulcrum pin

6-pin connector

Original table

3AL

3-2-6

5. Remove the two screws securing the DF original feed lower guide and the two screwssecuring the DF original feed upper guide.

6. Loosen the other two screws on the DF original feed lower guide. While lifting the DForiginal feed upper guide and pressing the original set switch actuator, remove the DForiginal feed lower guide.

Figure 3-2-5

7. Detach the original set switch 3-pin connector and remove the two screws securingthe separation pulley retainer to remove the retainer.

Figure 3-2-6

DF original feed upper guide

DF original feed lower guide

Original set switch

Screws (To be loosened only)

Separation pulley retainer

3-pin connector

3AL

3-2-7

8. Remove the two stop rings and pin to remove the DF separation pulley from theseparation shaft.

9. Clean or replace the DF separation pulley.10. Refit all removed parts.

• When fitting the DF separation pulley, ensure that the side having the one-wayclutch faces the machine rear.

Figure 3-2-7 Detaching the DF separation pulley

DF separation pulley

Stop rings

One-way clutch

Separation shaft

Pin

3AL

3-2-8

(3) Adjusting the DF center linePerform the following adjustment if there is a regular error between the centers of theoriginal and the copy image when the SRDF is used.

Note: Use an original with a reference line drawn down the center.

Procedure

Enter maintenance mode.

Place an original on the SRDF and make a test copy.

Perform the DF center line adjustment.

Yes

No

Start

End

Exit maintenance mode.

Is the image correct?

Change the setting.• For copy example 1, increase

the value.• For copy example 2, decrease

the value.

Original Copy example 1

Copy example 2

Reference line

Figure 3-2-8

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3-2-9

(4) Adjusting the DF original scanning start positionPerform the following adjustment if there is a regular error between the leading edges ofthe original and the copy image when the SRDF is used.

Note: Use an original with a reference line drawn 10 mm from the leading edge.

Procedure



Perform adjustment of the DF original scanning start position.

Yes

No

Start

End


Is the image correct?Change the setting.• For copy example 1, increase

the value.• For copy example 2, decrease

the value.


Copy example 2

Reference line

10 mm

Figure 3-2-9

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3-2-10

(5) Adjusting the DF original scanning end positionPerform the following adjustment if there is a regular error between the trailing edges ofthe original and the copy image when the SRDF is used.

Procedure



Perform adjustment of the DF original scanning end position.

Yes

No

Start

End


Is the image correct?Change the setting.• For copy example 1, decrease

the value.• For copy example 2, increase

the value.


Copy example 2

Figure 3-2-10

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3-2-11

(6) Adjusting magnification for copying using the DFPerform the following adjustment if magnification is incorrect when SRDF is used.

Procedure



Yes

No

Start

End


Is the image correct?Change the setting.Increasing the value makes the copy image longer/wider and decreasing the value makes it shorter/narrower.

Perform magnification adjustment for copying using the DF (in the main or auxiliary scanning direction).

Main scanning direction

Auxiliary scanning direction

Figure 3-2-11

3AL

CONTENTS

3-3 Troubleshooting

3-3-1 Image formation problems ................................................................. 3-3-1(1) There is a regular error between the centers of the original

and copy image when the SRDF is used. ................................. 3-3-2(2) There is a regular error between the leading edges of the

original and copy image when the SRDF is used. .................... 3-3-23-3-2 Original misfeeds ............................................................................... 3-3-3

(1) An original jams when the main switch is turned on. ................ 3-3-3(2) An original jams during continuous copying of multiple

originals. ................................................................................... 3-3-3(3) An original jams in the original feed section during copying

(a jam in the original feed section). ........................................... 3-3-4(4) An original jams in the original conveying section during

copying (a jam in the original conveying section). .................... 3-3-5(5) An original jams in the original switchback section during

copying (a jam in the original switchback section). ................... 3-3-5(6) Original jams frequently. ........................................................... 3-3-6

3-3-3 PCB terminal voltages ....................................................................... 3-3-7(1) DF driver PCB ........................................................................... 3-3-7

3-3-4 Electrical problems .......................................................................... 3-3-10(1) The original feed motor does not operate. .............................. 3-3-10(2) The original conveying motor does not operate. ..................... 3-3-10(3) The original feed solenoid does not operate. .......................... 3-3-10(4) The switchback feedshift solenoid does not operate. ............. 3-3-11(5) The eject feedshift solenoid does not operate. ....................... 3-3-11(6) The switchback pressure solenoid does not operate. ............. 3-3-11(7) The original feed clutch does not operate. .............................. 3-3-12(8) “Close feeder cover firmly” is displayed when the SRDF

is closed correctly. .................................................................. 3-3-12(9) An original jams when the main switch is turned on. .............. 3-3-12

3-3-5 Mechanical problems ....................................................................... 3-3-14(1) No primary original feed. ......................................................... 3-3-14(2) No secondary original feed. .................................................... 3-3-14(3) Originals jam. .......................................................................... 3-3-14

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3-3-1

3-3-1 Image formation problems

(2) There is a regularerror between theleading edges of theoriginal and copyimage when theSRDF is used.

See page 3-3-2.

(1) There is a regularerror between thecenters of the originaland copy image whenthe SRDF is used.

See page 3-3-2.

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3-3-2

(2) There is a regularerror between theleading edges of theoriginal and copyimage when theSRDF is used.

Causes1. Misadjusted DF original scanning start position.

Check procedures/corrective measuresReadjust the DF original scanning startposition (see page 3-2-9).

Causes1. Misadjusted DF original scanning

start position.

(1) There is a regularerror between thecenters of the originaland copy image whenthe SRDF is used.

Causes1. Misadjusted DF center line.

Check procedures/corrective measuresReadjust the DF center line (see page 3-2-8).

Causes1. Misadjusted DF center line.

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3-3-3

Problem Causes/check procedures Corrective measures

3-3-2 Original misfeeds

(1)An originaljams when themain switch isturned on.

(2)An originaljams duringcontinuouscopying ofmultiple origi-nals.

A piece of paper torn from anoriginal is caught around theoriginal feed switch.

Defective original feed switch.

A piece of paper torn from anoriginal is caught around theoriginal switchback switch.

Defective original switchbackswitch.

A piece of paper torn from anoriginal is caught around the DFtiming switch.

Defective DF timing switch.


Check if the original feed motoror the original conveying motormalfunction.

Remove any found.

With 5 V DC present at CN6-B4on the DF driver PCB, check ifCN6-B5 on the DF driver PCBremains low when the originalfeed switch is turned on and off.If it does, replace the originalfeed switch.

Remove any found.

With 5 V DC present at CN6-A6on the DF driver PCB, check ifCN6-A5 on the DF driver PCBremains low when the originalswitchback switch is turned onand off. If it does, replace theoriginal switchback switch.

Remove any found.

With 5 V DC present at CN6-A15on the DF driver PCB, check ifCN6-A14 on the DF driver PCBremains low when the DF timingswitch is turned on and off. If itdoes, replace the DF timingswitch.


Check and remedy.


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3-3-4

(3)An originaljams in theoriginal feedsection duringcopying (a jamin the originalfeed section).




Check and remedy.

Check visually and replace thedeformed pulley.






Check if the original feed motormalfunctions.

Check if the DF original feedpulley or the DF separation pul-ley is deformed.

Check if the DF registrationroller or the DF registration pul-ley is deformed.

Check if the lower original con-veying roller or the front scan-ning pulley is deformed.


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3-3-5

(4)An originaljams in theoriginal con-veying sectionduring copying(a jam in theoriginal con-veying sec-tion).

(5)An originaljams in theoriginalswitchbacksection duringcopying (a jamin the originalswitchbacksection).



Check if the original conveyingmotor malfunctions.

Check if the middle original con-veying roller and middle originalconveying pulley contact eachother correctly.



Check if the original feed motormalfunctions.

Check if the original conveyingmotor malfunctions.



Check and remedy.

Check and remedy.



Check and remedy.

Check and remedy.


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3-3-6

(6)Original jamsfrequently.

An original outside the specifi-cations is used.

The DF forwarding pulleys, DForiginal feed pulley or DFswitchback pulley is dirty withpaper powder.

The DF original feed pulley andthe DF separation pulley do notcontact correctly.

Use only originals conforming tothe specifications.

Clean with isopropyl alcohol.

Remedy.

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3-3-7

3-3-3 PCB terminal voltages

Precautions• When handling the circuit boards, do not touch the components with bare hands.• ICs can be damaged by static discharges. If a PCB contains ICs, do not touch the ICs,

cable connectors or edge connectors.• Store the circuit boards wrapped in aluminum foil, conductive sponge rubber, or similar

material.

(1) DF driver PCB

CN2

CN

5B

-13

A-1

B-1

A-1

3

CN

6B

-15

A-1

B-1

CN

4

41

CN

1

91

102

A-1

3

CN32221

21

1413

21

1-1 1-3, -4 24 V DC 24 V DC supply, input




2-1 1-9, -10 5/0 V DC OCM control signal, input (OCM M1)



2-6 1-9, -10 OCM current control voltage, input (OCM

Vref)

2-7 1-9, -10 5/0 V DC OCM rotation direction switching signal,

input (OCM CWB)

2-8 1-9, -10 5/0 V DC (pulse) OCM drive clock pulse, input

2-9 1-9, -10 5/0 V DC OCM control signal, input (OCM RET)

2-10 1-9, -10 5/0 V DC OCM enable signal, input

2-11 1-9, -10 5/0 V DC OFM rotation direction switching signal,

input (OFM CWB)

2-12 1-9, -10 5/0 V DC (pulse) OFM drive clock pulse, input

Terminals (CN) Voltage Remarks


3AL

3-3-8

2-13 1-9, -10 5/0 V DC OFM control signal, input (OFM RET)

2-14 1-9, -10 5/0 V DC OFM enable signal, input

2-15 1-9, -10 5/0 V DC OFSOL on, input (OFSOL A)

2-16 1-9, -10 5/0 V DC OFSOL off, input (OFSOL R)

2-17 1-9, -10 5/0 V DC SBFSSOL off/on, input

2-19 1-9, -10 5/0 V DC EFSSOL off/on, input

2-20 1-9, -10 5/0 V DC OFCL off/on, input

2-21 1-9, -10 5/0 V DC SBPSOL on, input (SBPSOL A)

2-22 1-9, -10 5/0 V DC SBPSOL off, input (SBPSOL R)

3-1 1-9, -10 5/0 V DC OSSW off/on, output

3-2 1-9, -10 5/0 V DC OFSW off/on, output

3-3 1-9, -10 5/0 V DC OSBSW off/on, output

3-4 1-9,-10 5/0 V DC DFTSW off/on, output

3-5 1-9, -10 5/0 V DC OSLSW off/on, output

3-6 1-9, -10 5/0 V DC DFSSW1 off/on, output

3-7 1-9, -10 5/0 V DC DFSSW2 off/on, output

3-8 1-9, -10 OSWSW size detection voltage, output

3-9 1-9, -10 5/0 V DC OSLED (green) off/on, input

3-10 1-9, -10 5/0 V DC OSLED (red) off/on, input

3-11 1-9, -10 0/5 V DC SRDF installed/not installed detection

signal

4-3 4-2 24/0 V DC DFSSW1 off/on

4-4 4-2 24/0 V DC DFSSW2 off/on

5-A1 1-3, -4 24/0 V DC 24 V DC supply for SBPSOL, output

5-A2 1-3, -4 24/0 V DC SBPSOL on, output (SBPSOL A)

5-A3 1-3, -4 24/0 V DC SBPSOL off, output (SBPSOL R)

5-A4 1-3, -4 24 V DC 24 V DC supply for OFCL, output

5-A5 1-3, -4 24/0 V DC OFCL off/on, output

5-A6 1-3, -4 24 V DC 24 V DC supply for EFSSOL, output

5-A7 1-3, -4 24/0 V DC EFSSOL off/on, output

5-A8 1-3, -4 24 V DC 24 V DC supply for OCM, output (A)

5-A9 1-3, -4 24 V DC 24 V DC supply for OCM, output (B)

5-A10 1-3, -4 24/0 V DC (pulse) OCM motor coil energization pulse,

output (A)


output (B)


output (_A)


output (_B)


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3-3-9

5-B1 1-3, -4 24 V DC 24 V DC supply for OFM, output (A)

5-B2 1-3, -4 24 V DC 24 V DC supply for OFM, output (B)

5-B3 1-3, -4 24/0 V DC (pulse) OFM motor coil energization pulse,

output (A)


output (B)


output (_A)


output (_B)

5-B7 1-3, -4 24 V DC 24 V DC supply for SBFSSOL, output

5-B8 1-3, -4 24/0 V DC SBFSSOL off/on, output

5-B11 1-3, -4 24 V DC 24 V DC supply for OFSOL, output

5-B12 1-3, -4 24/0 V DC OFSOL on, output (OFSOL A)

5-B13 1-3, -4 24/0 V DC OFSOL off, output (OFSOL R)

6-A5 6-A4 5/0 V DC OSBSW off/on, input

6-A6 6-A4 5 V DC 5 V DC supply for OSBSW, output

6-A8 6-A7 5/0 V DC OSWSW off/on, input

6-A9 6-A7 5 V DC 5 V DC supply for OSWSW, output

6-A11 6-A10 5/0 V DC OSLSW off/on, input

6-A12 6-A10 5 V DC 5 V DC supply for OSLSW, output

6-A14 6-A13 5/0 V DC DFTSW off/on, input

6-A15 6-A13 5 V DC 5 V DC supply for DFTSW, output

6-B1 6-B3 5 V DC 5 V DC supply for OSSW, output

6-B2 6-B3 5/0 V DC OSSW off/on, input

6-B4 6-B6 5 V DC 5 V DC supply for OFSW, output

6-B5 6-B6 5/0 V DC OFSW off/on, input

6-B7 6-B8 5/0 V DC OSLEDPCB (red) on/off, output

6-B9 6-B8 5/0 V DC OSLEDPCB (green) on/off, output

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3-3-10

(1)The originalfeed motordoes notoperate.

(2)The originalconveyingmotor doesnot operate.

(3)The originalfeed solenoiddoes notoperate.

Defective originalfeed motor coil.

The connector ter-minals of the origi-nal feed motormake poor contact.

Defective DF driverPCB.

Defective originalconveying motorcoil.

The connector ter-minals of the origi-nal conveying mo-tor make poor con-tact.

Defective DF driverPCB

Defective originalfeed solenoid coil.

The connector ter-minals of the origi-nal feed solenoidmake poor contact.


Problem Causes Check procedures/corrective measures

3-3-4 Electrical problems

Check for continuity across the coil. If none,replace the original feed motor.

Check for continuity across the connectorterminals. If none, replace the connector ter-minals.

Check for continuity across the original feedmotor coil and connector terminals. If good,replace the DF driver PCB.

Check for continuity across the coil. If none,replace the original conveying motor.


Check for continuity across the original con-veying motor coil and connector terminals. Ifgood, replace the DF driver PCB.

Check for continuity across the coil. If none,replace the original feed solenoid.


Check if the original feed solenoid operateswhen CN5-B13 or CN5-B12 on the DF driverPCB is low. If it does, replace the DF driverPCB.


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3-3-11

Check for continuity across the coil. If none,replace the switchback feedshift solenoid.


Check if the switchback feedshift solenoidoperates when CN5-B8 on the DF driverPCB is low. If it does, replace the DF driverPCB.

Check for continuity across the coil. If none,replace the eject feedshift solenoid.


Check if the eject feedshift solenoid operateswhen CN5-A7 on the DF driver PCB is low. Ifit does, replace the DF driver PCB.

Check for continuity across the coil. If none,replace the switchback pressure solenoid.


Check if the switchback pressure solenoidoperates when CN5-A2 or CN5-A3 on theDF driver PCB is low. If it does, replace theDF driver PCB.

(4)The switch-back feedshiftsolenoid doesnot operate.

(5)The ejectfeedshift sole-noid does notoperate.

(6)The switch-back pressuresolenoid doesnot operate.

Defective switch-back feedshift sole-noid coil.

The connector ter-minals of theswitchback feed-shift solenoid makepoor contact.


Defective ejectfeedshift solenoidcoil.

The connector ter-minals of the ejectfeedshift solenoidmake poor contact.


Defective switch-back pressure so-lenoid coil.

The connector ter-minals of theswitchback pres-sure solenoid makepoor contact.



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3-3-12

Defective originalfeed clutch coil.

The connector ter-minals of the origi-nal feed clutchmake poor contact.


The connector ter-minals of DF safetyswitch 1 make poorcontact.

Defective DFsafety switch 1.

A piece of papertorn from an origi-nal is caughtaround the originalfeed switch.

Defective originalfeed switch.

A piece of papertorn from an origi-nal is caughtaround the originalswitchback switch.

Defective originalswitchback switch.

(7)The originalfeed clutchdoes notoperate.

(8)“Close feedercover firmly” isdisplayed whenthe SRDF isclosed cor-rectly.

(9)An originaljams when themain switch isturned on.

Check for continuity across the coil. If none,replace the original feed clutch.


Check if the original feed clutch operateswhen CN5-A5 on the DF driver PCB is low. Ifit does, replace the DF driver PCB.


Check for continuity across the contacts ofthe switch. If none when the switch is on,replace DF safety switch 1.

Remove any found.

With 5 V DC present at CN6-B4 on the DFdriver PCB, check if CN6-B5 of the DF driverPCB remains low when the original feedswitch is turned on and off. If it does, replacethe original feed switch.

Remove any found.

With 5 V DC present at CN6-A6 on the DFdriver PCB, check if CN6-A5 on the DFdriver PCB remains low when the originalswitchback switch is turned on and off. If itdoes, replace the original switchback switch.


3AL

3-3-13

A piece of papertorn from an origi-nal is caughtaround the DF tim-ing switch.

Defective DF tim-ing switch.

(9)An originaljams when themain switch isturned on.(cont.)

Remove any found.

With 5 V DC present at CN6-A15 on the DFdriver PCB, check if CN6-A14 on the DFdriver PCB remains low when the DF timingswitch is turned on and off. If it does, replacethe DF timing switch.

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3-3-14

3-3-5 Mechanical problems


The surfaces of the DF forward-ing pulleys, DF original feedpulley or DF separation pulleyare dirty with paper powder.

Check if the DF original feedpulley or the DF separation pul-ley is deformed.

Check if the DF forwarding pul-leys are deformed.

Electrical problem with the fol-lowing clutch or solenoid:• Original feed solenoid• Original feed clutch

The DF registration pulley andthe DF registration roller do notcontact each other correctly.

Originals outside the specifica-tions are used.

The surfaces of the DF forward-ing pulleys, DF original feedpulley or DF separation pulleyare dirty with paper powder.

The DF original feed pulley andthe DF separation pulley do notcontact each other correctly.

(1)No primaryoriginal feed.

(2)No secondaryoriginal feed.

(3)Originals jam.

Check and clean them with iso-propyl alcohol if they are dirty.

If so, replace (see pages 3-2-2and 5).

If so, replace (see page 3-2-2).

See pages 3-3-10 and 11.

Remedy.

Use only originals conforming tothe specifications.

Check and clean them with iso-propyl alcohol if they are dirty.

Remedy.

3AL

CONTENTS

3-4 Appendixes

Timing chart No. 1 ........................................................................................ 3-4-1Timing chart No. 2 ........................................................................................ 3-4-2Timing chart No. 3 ........................................................................................ 3-4-3DF driver PCB .............................................................................................. 3-4-4Connection diagram ..................................................................................... 3-4-5Wiring diagram ............................................................................................. 3-4-6

AA A

A

AA A

A

E

E E

E

E

E E

E

EA

EA

3AL

3-4-1

SRDF-1 (MCA/MCE) S/M

Timing chart No. 1 Original feed operation 1: single-sided original mode, multiple originals

OSSW CN6-B2

OFSOL A CN5-B12

OFSOL R CN5-B13

OFCL CN5-A5

OFM CN5-B3, B4, B5, B6

OFSW CN6-B5

OSBSW CN6-A5

OCM CN5-A10, A11, A12, A13

DFTSW CN6-A14

Primary original feed

200 ms

556 P*2

20 ms 30 ms + 288 P*2

470 ms*1

556 P*2

60 ms + 1126 P*3

200 ms

Repeats Original ejection

*1 During enlargement copying: (magnification × 10 – 530) ms*2 Burst of OFM pulses*3 Burst of OCM pulses

20 ms 30 ms + 288 P*2

AA A A

A

AA A A

A

E

E E E

E

E

E E E

E


3-4-2

3AL

Timing chart No. 2 Original feed operation 2: double-sided original mode, multiple originals ( 1/2)

OSSW CN6-B2

OFSOL A CN5-B12

OFSOL R CN5-B13

OFCL CN5-A5


OFSW CN6-B5

SBFSSOL CN5-B8

SBPSOL ASBPSOL R

CN5-A2CN5-A3

OSBSW CN6-A5

OCM CN5-A10, A11, A12, A13

EFSSOL CN5-A7

DFTSW CN6-A14

Primary original feed

200 ms

556 P*1

20 ms 115 P*1 100 ms

288 P*1

546 P*2

30 ms

Scanning the first face

Scanning speed


Repeats

Switchback operation

AA A

A

AA A

A

E

E E

E

E

E E

E

EA

EA

3AL

3-4-3


Timing chart No. 3 Original feed operation 2: double-sided original mode, multiple originals ( 2/2)

OSSW CN6-B2

OFSOL A CN5-B12

OFSOL R CN5-B13

OFCL CN5-A5


OFSW CN6-B5

SBFSSOL CN5-B8

SBPSOL ASBPSOL R

CN5-A2CN5-A3

OSBSW CN6-A5

OCM CN5-A10, A11, A12, A13

EFSSOL CN5-A7

DFTSW CN6-A14

Repeats

Switchback operation Primary feed of next original Scanning the image Original ejection


115 P*1

30 ms + 2337 P*2 30 ms + 2337 P*2

200 ms

100 ms 327 P*1 + 100 ms 288 P*1

Scanning speed

100 ms 30 ms

495 P*1

30 ms

AA A A

A

AA A A

A

E

E E E

E

E

E E E

E

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8


3-4-4

3AL-1

DF driver PCB

S

S

S GS G

S

S

S G

CN6-B2

CN6-B5

CN3-15

4

1C

2C

1B

E

2B

1

3

2

CN3-2

S

S

S GS G

S

S

S G

CN6-A5

CN6-A14

CN3-35

4

1C

2C

1B

E

2B

1

3

2

CN3-4

OSSW

OFSW

OSBSW

DFTSW

S

S

S

5

4

1C

2C

1B

E

2B

1

3

2

S S

S GS G

CN6-A11 CN3-5 OSLSW

CN3-9 CN6-B9

CN3-10 CN6-B7

CN6-A8

OSSW

OFSW

OSBSW

OFTSW

OSLSW

OSLEDPCB (GN)

OSLEDPCB (RED)

OSWSW CN3-8

OSLEDPCB (GN)

OSLEDPCB (RED)

OSWSW

CN1-1CN1-2

24 V24 V

CN4-2 24 V

**

* *

*

**

C

E

B

CN1-4CN1-3

PGPG

CN1-6CN1-5

N.C.N.C.

N.C.N.C.

P G

+

CN1-7CN1-8

5 V 5 V

CN1-10CN1-9

SGSG

+

+

S

VIN VOUT

ADJ

G

S G

CN6-A9 5 VCN6-A12 5 VCN6-A15 5 VCN6-B1 5 VCN6-B4 5 VCN6-A6 5 V

CN5-A1 24 VCN4-124 (VEN)CN5-A4 24 VCN5-A6 24 VCN5-B7 24 VCN5-B9 24 VCN5-B11 24 V

CN6-B10 5 VCN6-B13 5 V

CN6-B8 SGCN6-A7 SGCN6-A10 SGCN6-A13 SG

CN6-A1 N.C.

CN3-11CN6-A2 N.C.CN6-A3 N.C.CN3-14 N.C.

CN6-B3 SGCN6-B6 SGCN6-A4 SGCN6-B12 SGCN6-B15 SGS G

S G

CN2-17

*

*

*

*

*

*

CN5-B8

CN2-19 CN5-A7

CN2-20 CN5-A5

CN2-21CN5-A2

S

S5

4

1C

2C

1B

E

2B

1

3

2 P G

CN2-22CN5-A3

P G

CN2-15CN5-B12

P GS G

CN2-16CN5-B13

SBFSSOL

EFSSOL

OFCL

SBPSOL (A)

SBPSOL (B)

OFSOL (A)

OFSOL (B)

P GS G

R

S

S G

S

S

CN4-3

CN4-4

SBFSSOL

EFSSOL

OFCL

SBPSOL (A)

SBPSOL (B)

OFSOL (A)

OFSOL (B)

DFSSW2

DFSS

CN3-75

4

1C

2C

1B

E

2B

1

3

2

CN3-6

DFSSW2

DFSSW1

P G

P G

S

CN2-6

CN2-7

CN2-9

CN2-10

CN2-1CN2-2CN2-3

CN5-A10CN5-A12CN5-A11CN5-A13

CN5-A9CN5-A8

CN2-4CN2-5

N.C.N.C.

CN2-8

Vref VDD

SG22

7

CWB

M1M2M3

A_AB

_BM4M5CLK

MO2

MO1MO1

EN

_RESRET

PGPG

652

192021

34

1

8

15

91011121314

18

1617S

S G

S G

+

S

S G

S G

S G

S G

C

E

B

P G

S

CN2-14

CN2-12CN2-13CN2-11

OCM Vref

OCM CWB

OCM RET

OCM ENABLE

OCM M1OCM M2OCM M3

OCM CLK

OFM ENABLE

DF SHORT

OFM CLKOFM RET

OFM CWB CN5-B3CN5-B5CN5-B4CN5-B6

CN5-B1CN5-B2

OCM AOCM AOCM BOCM B

OCM BCOM 24 V (VEN)OCM ACOM 24 V (VEN)

OFM AOFM AOFM BOFM B

OFM ACOM 24 V (VEN)OFM BCOM 24 V (VEN)

VDD10

CLKMODECWB A

ABB

BB

RST B

Vref GNDSP

543

111

2

9 8 7 6

12S G

+

SS

S G

S G

S G

C

E

BP G

++

S G

P G

S

S

COM

S G

14

7

S

S G

8

4

S G

P G

F G F G F G F G

R

R

R

R

* * * * * * * *

* Not installed

S G

S G

S G S G

S G

S G

S G

S G

S G

AA A

A

AA A

A

E

E E

E

E

E E

E

EA

EA

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

3AL

3-4-5


Connection diagram

OFM

OF

M B

OF

M A

OF

M B

CO

M 2

4 V

(V

EN

)O

FM

AC

OM

24

V (

VE

N)

OF

M B

OF

M A

CN

5-B

4C

N5-

B3

CN

5-B

2C

N5-

B1

CN

4-1

CN

4-2

CN

4-3

CN

4-4

CN

5-B

6C

N5-

B5

OCM

OC

M B

OC

M A

OC

M B

CO

M 2

4 V

(V

EN

)O

CM

AC

OM

24

V (

VE

N)

OC

M B

OC

M A

CN

5-A

11C

N5-

A10

CN

5-A

9C

N5-

A8

CN

5-A

13C

N5-

A12

OFSOL

24 V

OF

SO

L (R

) O

FS

OL

(A)

CN

5-B

11

CN

5-B

13C

N5-

B12

SBFS

SOL

SB

FS

SO

L24

VC

N5-

B8

CN

5-B

7

OFCL

OF

CL

24 V

CN

5-A

5C

N5-

A4

EFSSOL

EF

SS

OL

24 V

CN

5-A

7C

N5-

A6

SBPSOL

24 V

SB

PS

OL

(R)

SB

PS

OL

(A)

CN

5-A

1

CN

5-A

3C

N5-

A2

SG

5 V

OS

LSW

CN

6-A

10

CN

6-A

12C

N6-

A11

3

2

1

3

2

1DF

SS

W2

DF

SS

W2

DF

SS

W1

24 V

(V

EN

)

24 V

DF

SS

W1

OSL SW

SG

5 V

OS

WS

W

CN

6-A

7

CN

6-A

9C

N6-

A8

OSW SW

OS

LED

PC

B (

RE

D)

OS

LED

PC

B (

GN

)S

G

OS

LED

PC

B (

RE

D)

SB

PS

OL

(R)

OS

LED

PC

B (

GN

)

SB

PS

OL

(A)

EF

SS

OL

OF

CL

SB

FS

SO

L

OF

SO

L (A

)O

FS

OL

(R)

OF

M E

NA

BLE

OF

M C

LKO

FM

RE

T

OF

M C

WB

OC

M R

ET

OC

M E

NA

BLE

OC

M C

LK

OC

M V

ref

OC

M C

WB

OC

M M

3

OC

M M

1O

CM

M2

CN

A-2

1C

N A

-22

CN

A-1

9C

N A

-20

CN

A-1

8

CN

A-1

6C

N A

-17

CN

A-1

5

CN

A-1

3C

N A

-14

CN

A-1

2

CN

A-1

0C

N A

-11

CN

A-9

CN

A-7

CN

A-8

CN

A-6

CN

A-4

CN

A-5

CN

A-3

CN

A-1

CN

A-2

CN

B-1

9C

N B

-20

CN

B-1

7C

N B

-18

CN

B-1

6

CN

B-1

4C

N B

-15

CN

B-2

2C

N B

-23

CN

B-2

1

CN

B-1

3

CN

B-1

1C

N B

-12

CN

B-1

0

CN

B-8

CN

B-9

CN

B-7

CN

B-5

CN

B-6

CN

B-4

CN

B-2

CN

B-3

CN

B-1

CN

A-2

3

OS

BS

WO

FS

WO

SS

W

OS

WS

WD

FS

SW

2

OS

LSW

DF

SS

W1

DF

TS

W

FG

FG

SG

SG

5 V

PG

5 V

PG

24 V

24 V

CN

6-B

7

CN

6-B

9C

N6-

B8

CN

1-3

CN

1-1

CN

1-2

CN

1-8

CN

1-4

CN

1-7

CN

2-4

CN

1-5

CN

1-6

CN

2-5

CN

3-14

CN

6-A

3

CN

6-A

1C

N6-

A2

CN

1-9

CN

1-10

CN

3-4

FG

FG

CN

3-7

CN

3-5

CN

3-6

CN

3-8

CN

3-11

CN

3-1

CN

3-12

CN

3-13

CN

2-1

CN

3-2

CN

3-3

CN

2-8

CN

2-6

CN

2-7

CN

2-11

CN

2-9

CN

2-10

CN

2-12

CN

2-13

CN

2-16

CN

2-14

CN

2-15

CN

2-17

CN

2-18

CN

2-19

CN

2-20

CN

2-21

CN

3-10

CN

2-22

CN

3-9

CN

2-2

CN

2-3

OSLEDPCB

SG

5 V

OS

SW

CN

6-B

3

CN

6-B

1C

N6-

B2

SG

5 V

OF

SW

CN

6-B

6

CN

6-B

4C

N6-

B5

OFSW OSSW

SG

5 V

OS

BS

W

CN

6-A

4

CN

6-A

6C

N6-

A5

OSB SW

SG

5 V

DF

TS

W

CN

6-A

13

CN

6-A

15C

N6-

A14

DFT SW

1110 9 8 7 6 5 4 3 2 1 111012 9 8 7 6 5 4 3 2 1 1110 9 8 7 6 5 4 3 2 1 111012 9 8 7 6 5 4 3 2 1Mi2 (11P) White Mi2 (12P) White Mi2 (11P) Red Mi2 (11P) Red

Unu

sed

pins

DFDPCB

AA A A

A

AA A A

A

E

E E E

E

E

E E E

E

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8


3-4-6

3AL

Wiring diagram

DFTSW

OCM

OFSOL

OFM

C10

M1

C3(CN3)C1

(CN1)

C4(CN4)

C2(CN2)C6

(CN6)

C5(CN5)

DFDPCB

P1 DFSW1

C7C8

C10 C9

OSLSWOriginal table

OSWSW

Mi2 (12P) RED

C7-1 GN

C7-2 GN

C7-4

C7-5

C7-6

C7-7

C7-8

C7-9

C7-10

C7-11

C19-3 GY

C19-2 GY

C19-1 GY

C10-6 GY

C10-5 GY

C10-4 GY

C10-3 GY

C10-2 GY

C10-1 GY

C20-3 GY

C20-2 GY

C20-1 RD

C15-3 GY

C15-2 GY

C15-1 GY

C13-2 GY

C13-1 GY

C26-2 GY

C26-1 GY

C17-6 GY

C17-5 GY

C17-4 GY

C17-3 GY

C17-2 GY

C17-1 RD

C22-1 GY

C22-2 GY

C-22-3 GY

C28-1 GY

C28-2 GY

C11-1 GY

C11-2 GY

C11-3 GY

C11-4 GY

C11-5 GY

C11-6 RD

C32-1 GY

C32-2 GY

C32-3 GY

C30-1 GY

C30-2 GY

C30-3 GY

C24-1 GY

C24-2 GY

C24-3 RD

A-1

A-2

A-3

A-4

A-5

A-6

A-7

A-8

A-9

A-10

A-11

A-12

A-13

A-14

A-15

B-15

B-14

B-13

B-12

B-11

B-10

B-9

B-8

B-7

B-6

B-5

B-4

B-3

B-2

B-1

A-1

A-2

A-3

A-4

A-5

A-6

A-7

A-8

A-9

A-10

A-11

A-12

A-13

B-13

B-12

B-11

B-10

B-9

B-8

B-7

B-6

B-5

B-4

B-3

B-2

B-1

1

2

3

24 V

24 V (VEN)

DFSW1

1

2

3

5 V

OSLSW

SG

1

2

3

5 V

OSWSW

SG

C9-6 OE

C9-5 GY

C9-4 BE

C9-3 OE

C9-2 YW

C9-1 BE

C6-A12 GY

C6-A11 GY

C6-A10 GY

C6-A9 GY

C6-A8 GY

C6-A7 GY

C7-1 OE

C7-2 GY

C7-3 BE

C8-1 OE

C8-2 YW

C8-3 BE

1

2

3

4

5

6

5 V

OSLSW

SG

5 V

OSWSW

SG

6

5

4

3

2

1 OE

YW

BE

P2-2 RD

C4-1 RD

C4-4 RD

24 V

SBPSOL (A)

SBPSOL (R)

24 V

OFCL

24 V

EFSSOL

OCM ACOM 24 V (VEN)

OCM BCOM 24 V (VEN)

OCM A

OCM B

OCM A

OCM B

OFSOL (R)

OFSOL (A)

24 V

24 V

SBSFSOL

24 V

OFM B

OFM A

OFM B

OFM A

OFM BCOM 24 V (VEM)

OFM ACOM 24 V (VEN)

SG

DSBSW

5 V

SG

OSWSW

5 V

SG

OSLSW

5 V

SG

DFTSW

5 V

SG

5 V

SG

5 V

OSLEDPCB (GN)

SG

OSLEDPCB (RED)

SG

OFSW

5 V

SG

OSSW

5 V

10

9

8

7

6

5

4

3

2

1

SG

SG

5 V

5 V

PG

PG

24 V

24 V

P1-3 RD

P2-3 RD

P2-1 RD

P1-2 RD

4

3

2

1

DFSW1

DFSW2

24 V

24 V (VEN)

C9 Mi2 (11P) RED C8 Mi2 (12P) WHITE C7 Mi2 (11P) WHITE

SBPSOL

OFCL

BE

LB OE

C19

C21

C20

C17

C18

C15

C16

C13

C14

C11

C12

OS

BS

W

C6-

A6

GY

C6-

A5

GY

C6-

A4

GY

5 V

OS

BS

W

SG

1 2 3

1 2 3 4 5 6 1 2 3

6 5 4 3 2 1

1 2 3 4 5 6

6 5 4 3 2 13 2 1

1 2

2 1

BK

WE

RD

BE

YW

OE

_ _ _ _

C5-

A8

RD

C5-

A9

GY

C5-

A10

GY

C5-

A11

GY

C5-

A12

GY

C5-

A13

RD

OC

M A

CO

M 2

4 V

(V

EN

)

OC

M B

CO

M 2

4 V

(V

EN

)

OC

M A

OC

M B

OC

M A

OC

M B

BK

WE

RD

BE

YW

OE

C5-

B1

RD

C5-

B2

GY

C5-

B3

GY

C5-

B4

GY

C5-

B5

GY

C5-

B6

GY

B-2

3

B-2

2

B-2

1

B-2

0

B-1

9

B-1

8

B-1

7

B-1

6

B-1

5

B-1

4

B-1

3

B-1

2

B-1

1

B-1

0

B-9

B-8

B-7

B-6

B-5

B-4

B-3

B-2

B-1

A-2

3

A-2

2

A-2

1

A-2

0

A-1

9

A-1

8

A-1

7

A-1

6

A-1

5

A-1

4

A-1

3

A-1

2

A-1

1

A-1

0

A-9

A-8

A-7

A-6

A-5

A-4

A-3

A-2

A-1

C3-

10

C3-

9

C2-

22

C2-

21

C2-

20

C2-

19

C2-

18

C2-

17

C2-

16

C2-

15

C2-

14

C2-

13

C2-

12

C2-

11

C2-

10

C2-

9

C2-

8

C2-

7

C2-

6

C2-

3

C2-

2

C2-

1

C3-

3

C3-

2

C3-

1

C3-

13

C3-

12

C3-

11

C3-

8

C3-

7

C3-

6

C3-

5

C3-

4

M1

GN

M1

GN

C1-

10

C1-

9

C1-

8

C1-

7

C1-

4

C1-

3

C1-

2

C1-

1

C8-

4

C8-

3

C8-

2

C8-

12

C8-

11

C8-

10

C8-

9

C8-

8

C10

-3

C10

-2

C8-

7

C8-

6

C8-

5

C9-

11

C9-

10

C9-

9

C9-

8

C9-

7

C9-

6

C9-

5

C9-

4

C9-

3

C9-

2

C9-

1

C10

-12

C10

-11

C10

-10

C10

-9

C10

-8

C10

-7

C10

-6

C10

-5

C10

-4

1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11

1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

OS

SW

OF

SW

OS

BS

W

DF

TS

W

OS

LSW

DF

SW

1

DF

SW

2

OS

WS

W

OS

LED

PC

B (

GN

)

OS

LED

PC

B (R

ED

)

OC

M M

1

OC

M M

2

OC

M M

3

OC

M V

ref

OC

M C

WB

OC

M C

LK

OC

M R

ET

OC

M E

NA

BLE

OF

M C

WB

OF

M C

LK

OF

M R

ET

OF

M E

NA

BLE

OF

SO

L (A

)

OF

SO

L (R

)

SB

SF

SO

L

EF

SS

OL

OF

CL

SB

PS

OL

(A)

SB

PS

OL

(R)

OS

LED

PC

B (

RE

D)

OS

LED

PC

B (

GN

)

SB

PS

OL

(R)

SB

PS

OL

(A)

OF

CL

EF

SS

OL

SB

SF

SO

L

OF

SO

L (R

)

OF

SO

L (A

)

OF

M E

NA

BLE

OF

M R

ET

OF

M C

LK

OF

M C

WB

OC

M E

NA

BLE

OC

M R

ET

OC

M C

LK

OC

M C

WB

OC

M V

ref

OC

M M

3

OC

M M

2

OC

M M

1

OS

BS

W

OF

SW

OS

SW

OS

WS

W

DF

SW

2

DF

SW

1

OS

LSW

DF

TS

W

FG

FG

SG

SG

5 V

5 V

PG

PG

24 V

24 V

OF

M A

CO

M 2

4 V

(V

EN

)

OF

M B

CO

M 2

4 V

(V

EN

)

OF

M A

OF

M B

OF

M A

OF

M B

RD

BN

GN

RD

BN

GN

C5-B11 GY

C5-B12 GY

C5-B13 GY

24 V

OFSOL (A)

OFSOL (R)

1

2

3

3

2

1

OFSW

OSLEDPCB

OE

YW

BE

C6-B4 GY

C6-B5 GY

C6-B6 GY

C6-B9 GY

C6-B8 GY

C6-B7 GY

5 V

OFSW

SG

OSLEDPCB (GN)

SG

OSLEDPCB (RED)

1

2

3

1

2

3

DFSW2C4-2 RD

P1-1 RD

C4-3 RD

24 V

24 V (VEN)

DFSW2

1

2

3

3

2

1

OSSWOE

LB

BE

C6-B1 RD

C6-B2 GY

C6-B3 GY

5 V

OSSW

SG

1

2

3

3

2

1

EFSSOL C27 C26

C25 C24

C31 C30

C23 C22

P2

C32

C29 C28

BE

BE

C5-A6 GY

C5-A7 GY24 V

EFSSOL

1

2

2

1

SBSFSOLBE

BE

C5-B7 GY

C5-B8 GY24 V

SBSFSOL

1

2

2

1

C5-

A1

GY

C5-

A2

GY

C5-

A3

GY

24 V

SB

PS

OL

(A)

SB

PS

OL

(R)

BK

BK

C5-

A4

GY

C5-

A5

GY

24 V

OF

CL

3 2 1

1 2 3

C6-

A13

GY

C6-

A14

GY

C6-

A15

RD

SG

DF

TS

W

5 V

Wire color Mark

BlackBrownYellowGreenBlueWhitePinkRedOrangeLight bluePurpleGrayGreen/yellow

BKBNYWGNBEWEPKRDOELBPEGY

GN/YW

_

_

_

_

©1998 MITA INDUSTRIAL CO., LTD.MITA and are registered trademarks of MITA INDUSTRIAL CO., LTD.

MITA COPYSTAR AMERICA, INC.Headquarters:225 Sand Road, P.O. Box 40008Fairfield, New Jersey 07004-0008TEL : (973) 808-8444FAX : (973) 882-6000

New York Show Room:149 West 51st street,New York, NY 10019TEL : (212) 554-2679FAX : (212) 554-2625

Northeastern Region:225 Sand Road, P.O. Box 40008Fairfield, New Jersey 07004-0008TEL : (973) 808-8444FAX : (973) 882-4401

Midwestern Region:225 Spring Lake Drive,Itasca, Illinois 60143TEL : (630) 250-7447FAX : (630) 250-8787

Western Region:14101 Alton Parkway,P.O.Box 57006, Irvine,California 92618-7006TEL : (714) 457-9000FAX : (714) 457-9119

Southeastern Region:1500 Oakbrook Drive,Norcross, Georgia 30093TEL : (770) 729-9786FAX : (770) 729-9873

Southwestern Region:2825 West Story Road,Irving, Texas 75038-5299TEL : (972) 550-8987FAX : (972) 570-4704

Dallas Parts Distribution Center& National Training Center:2825 West Story Road,Irving, Texas 75038-5299TEL : (972) 659-0055FAX : (972) 570-5816

MITA COPYSTAR CANADA, LTD.6120 Kestrel Road,Mississauga, Ontario L5T 1S8TEL : (905) 670-4425FAX : (905) 670-8116

MITA COPYSTAR MEXICO, S.A. DE C.V.Av. 16 de Septiembre #407Col. Santa Inés,Delegación AzcapotzalcoMéxico, D.F. C.P. 02130TEL : 3-83-27-41FAX : 3-83-78-04

MITA COPYSTAR SOUTH AMERICA S.A.Av. Mitre 1345 Florida (1602)Pcia, Buenos Aires, Argentina.TEL : (54) 1-730-1070FAX : (54) 1-760-2071

Printed in U.S.A.

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