SM FS 7000 9000_4

Chapter 4

OPERATIONOVERVIEW

1-1-9FS-7000+/FS-9000

CONTENTS

Chapter 4 OPERATION OVERVIEWElectrophotographics system .................................................................................. 4-1Electrophotographic cycle ........................................................................................... 4-1Amorphous-silicon drum ............................................................................................. 4-2Charging the drum ...................................................................................................... 4-3Toner ........................................................................................................................... 4-4Exposure ..................................................................................................................... 4-5Scanner unit ................................................................................................................ 4-6Laser scanning ............................................................................................................ 4-9Development ............................................................................................................. 4-10Developing roller bias ................................................................................................ 4-11Image transfer ........................................................................................................... 4-13Paper separation ........................................................................................................ 4-13Fusing ....................................................................................................................... 4-14Drum cleaning and erasing static charge .................................................................. 4-16Typical photo process timing chart ............................................................................ 4-17

Paper feeding system ............................................................................................. 4-18Paper control signals ................................................................................................. 4-19Paper feeding components ....................................................................................... 4-20Control devices ......................................................................................................... 4-21Paper feeder PF-30 control devices ......................................................................... 4-22Printing from paper feeder PF-30 cassettes ............................................................. 4-23Printing from the MP tray .......................................................................................... 4-24Printing from the optional envelope feeder ............................................................... 4-25Paper jam detection .................................................................................................. 4-26Message display at a paper jam ............................................................................... 4-28

Print timing charts .................................................................................................. 4-29Signal and symbols .................................................................................................... 4-29Print timing chart ........................................................................................................ 4-30

Basic engine functions ........................................................................................... 4-36

Engine controller system ....................................................................................... 4-37Configuration memory ............................................................................................... 4-37High-voltage generator ............................................................................................. 4-37Laser scanner control ............................................................................................... 4-37Polygon motor control ............................................................................................... 4-37Safety interlock ......................................................................................................... 4-38The engine gate arrays ............................................................................................. 4-39The engine CPU ....................................................................................................... 4-43Power supply ............................................................................................................ 4-44Power distribution ..................................................................................................... 4-46

1-1-10FS-7000+/FS-9000

Logic controller system ......................................................................................... 4-47Main logic controller overview ................................................................................... 4-47Main logic controller block diagram ........................................................................... 4-48Printing data processing ........................................................................................... 4-49Main logic component ............................................................................................... 4-50CPU (U01) ................................................................................................................. 4-50ASIC (U02) ................................................................................................................. 4-50ASIC (U03) ................................................................................................................. 4-50API ROM socket (U09E) ........................................................................................... 4-50API ROM socket pin assignment .............................................................................. 4-51System DIMM (YS01) ............................................................................................... 4-52RAM (U10 and U13) ................................................................................................. 4-52Memory card slot interface (YC6) ............................................................................. 4-52KUIO interface (YC02/YC03) .................................................................................... 4-53Parallel interface ....................................................................................................... 4-54Serial interface .......................................................................................................... 4-54Engine interface ........................................................................................................ 4-55Engine interface connector assignment .................................................................... 4-55Signals used for the engine interface ........................................................................ 4-56Engine interface signals ............................................................................................. 4-57

4-1FS-7000+/FS-9000

Electrophotographics system

Electrophotography is the technology used in laser printing which transfers data representingtexts or graphics objects into a visible image which is developed on the photosensitive drum,finally fusing on paper, using light beam generated by a laser diode.

The key features for the electrophotography system of the printer are:

Real 600 dpi resolution (equivalent to 2400 dpi resolution thanks to KIR smoothingtechnique)

Ultra long life amorphous silicon drum (non-heating) Paper support for up to A3 (Ledger) size Microfine mono component toner

Electrophotographic cycleThe electrophotography system of the printer performs a cyclic action made of seven stepsas follows. Each step is technically explained in the following sections.

2 Exposure

4 Transfer

3 Developing7 Erasing

1 Main Charging

6 Cleaning

5 Fusing

4-2FS-7000+/FS-9000

Amorphous-silicon drum

The printer uses the long lasting amorphous silicon (a-Si) drum. The photoconductive layeris coated over the aluminum cylinder base as shown below. The aluminum base iselectrically grounded to the ground.

The photoconductive layer is charged evenly over its surface by positive high voltagecharging (corona charging) given by the main charger unit (the wire and grid). The area onthe charged drum surface which is exposed to the laser beam, as the print image isstatistically drawn over the drum, loses the charge as it is escaped through the ground. Theresultant electrostatic latent (negative) image is then developed by toner and transfer to themedium like paper.

The amorphous silicon photo conductor is extremely hard, non-toxic, and highly resistiveagainst chemical substances. These characteristics of the amorphous material make itselfup to a most durable, stable photoconductor for the electrophotography printer.

Aluminum base cylinder

Photoconductive layer

4-3FS-7000+/FS-9000

Charging the drum

Figure below is a simplified diagram of the electrophotographics components. Charging thedrum is done by the main charger unit marked A in the diagram.

As the drum B rotates in a clean (neutral) state, its photoconductive layer is given auniform, positive (+) corona charge dispersed by the main charger wire A.Due to high-voltage scorotron charging, the charging wire can get contaminated byoxidization and therefore must be cleaned periodically from time to time using the methodexplained in chapter 3. Cleaning the charging wire prevents print quality problems such asblack streaks caused by the oxide ac-cumulated around the charging wire.

AB

4-4FS-7000+/FS-9000

Toner

The toner is fed from toner kit TK-30 or TK-30H. The toner is of dry mono component typeand comprised of the following substances as depicted below.

Single component toner TK-30 or TK-30H

A ResinB FerriteC SilicaD Polisher

AB

C

D

4-5FS-7000+/FS-9000

Exposure

The charged surface of the drum B is then scanned by the laser beam from the scannerunit A.

A

B

+ + + + +

LASER BEAM

a-Si LAYER

250 V

20 V

0 V

+ + + +

+ + + +

LASER BEAM

ALUMINUM

The laser beam is switched on for a black dot and off for a white (blank) dot according tothe print data. Whenever it is illuminated by the laser beam, the electrical resistance of thephotoconductor is reduced, the potential on the photoconductor is also lowered fromapproximately 250 V to 20 V, effectively driving the charge through the a-Si layer down tothe aluminum base.

4-6FS-7000+/FS-9000

Scanner unit

The 600 dpi scanner unit includes the laser diode that produces the 670 nm wavelengthlaser beam. This wavelength is specifically designed to match the photoconductiveresponse of amorphous silicon.The diagrams below show the components inside the scanner unit in two viewshorizontaland vertical. The function of each component is described in the following pages. Note thatthe directive arrows indicate the laser beam paths.

TOP VIEW

0

1

74

5

3

6

2

9

4-7FS-7000+/FS-9000

SIDE VIEW

1 Laser diode ...................................... emits diffused, visible laser.2 Collimeter lens ................................. aligns the laser beam to the cylindrical lens.3 Cylindrical lens ................................. compensates the slant angle at which the laser

beam hits a polygon mirror segment.4 Polygon mirror (motor) ..................... has ten mirror segments around its octagonal

circumference; each mirror corresponding to onescanned line width on the drum when laser beamscans on it.

5 Primary f-theta lens .......................... See below.6 Secondary f-theta lens ..................... The primary (above) and secondary f-theta lenses

equalize focusing distortion on the drum edges.The effective length of line (A, B below) thelaser beam draws on the drum becomes longer asthe laser beam hits closer to the drum edges. Inthe figure below, distances represented by Aand B are not the same (A > B) until the f-thetalenses are provided between the polygon mirrorand the drum (A = B).

Drum

8

4-8FS-7000+/FS-9000

7 Diversion mirror ................................ diverts the laser beam vertically onto the drum.Note the diffused laser beam finally pin-points onthe drum.

8 Protective glass ................................ prevents dust, debris, etc., from entering thescanner assembly.

9 Sensor mirror ................................... bends the very first shot of a laser scan towardsthe beam detection sensor (See next.).

0 Beam detector sensor ...................... when shone by the sensor mirror above, thisphotosensor generates a trigger signal for theengine controller to start activating the paperfeeding system.

A A

B

Secondary f-theta lens

Primary f-theta lens Polygon mirror

Laser diode

q

q

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Laser scanning

The laser beam hits one of ten polygonal mirrors. As the mirror revolves (at the nominalrevolution of 17,700 rpm*1 or 24,000 rpm*2), the laser beam reflects off of it and reaches thecharged drum surface in a lengthwise manner.A pair of (plastic) lenses provides focusing the horizontally sweeping laser beam onto thedrum. As the drum rotates, the laser beam sweeps the entire length of the drum so that thedrums entire circumference is exposed to the laser beam. The revolution of the polygonmirror motor and the drum itself is timing-controlled so that each successive sweeping ofthe laser beam produces a 1/600 inch offset. The printers controller system continuouslyturns the laser beam on and off to put a dot at every 1/600 inch distance horizontally.Synchronizing the output data with one scanning line is achieved by the photo sensorprovided next to the first mirror. At the beginning of each laser sweeping, the beam hits thephoto sensor which in turn sends a command to the logic controller for synchronization.

*1: FS-7000+ model*2: FS-9000 model

4-10FS-7000+/FS-9000

Development

The latent image constituted on the drum is developed into a visible image. The developingroller contains a magnet core and an aluminum cylinder rotating around the magnet coreat a speed twice faster than that of the drum. Toner attracts to the developing roller sinceit is magnetic. A magnetized blade above the developing roller constitutes a smooth layerof toner in accordance with the roller revolution.

Magnetism

0.3 0.4 mm0.1 mm

Developing roller

Blade

Drum Magnet

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Developing roller bias

The developing bias is adjusted so that the toner, charged positive while each particle isrubbing each other in the developer, is selectively developed onto the area of low potentialby adhering. The bias is AC weighted, positive DC power source.Since the gap between the developing roller and the drum is wider than the averagediameter of the toner, the toner should fly over to the drum surface to accomplishdevelopment. This method is known as the non-contact development method.

Drum

Toner

Develop. rollerDrum

Toner

AC + DC

Toner sensor

Blade

Develop. roller

4-12FS-7000+/FS-9000

A toner replenishment sensor is provided within the developer. As the toner supply from thetoner container dwindles and the toner level lowers in the reservoir, the sensor translatesit through its sensing plate, urging the toner motor to feed more toner.

20 V

Surfacepotential =

250 V

Developing roller bias

Developing

160 V DC + 1.8 kV AC

Area exposed by laser

Area not exposed by laser

Toner+ + + + + + +

Toner

Toner sensor

Developer unit

Sensing plate

Sensable level

4-13FS-7000+/FS-9000

Image transfer

The image developed by toner on the drum (A below) is transferred onto the paper usingthe electric charge attraction given by the toner itself and the transfer roller (B below). Thetransfer roller is negatively biased so that the positively charged toner is attracted onto thepaper while it is pinched by the drum and the transfer roller.

The nominal transfer bias is set to approximately 1.7 kV*1/2.1 kV*2 (limit) with the 55 A*1/80 A*2 current. Since the ideal potential of the transfer bias varies depending on thethickness of paper, the bias is raised to approximately 2.2 kV*1/2.8 kV*2/55 A*1/80 A*2for thicker paper (91 to 200 g/m2). Double-sided printing using a DU-30*3/DU-31 duplexerautomatically increases the transfer bias to the above value. On the other hand, the biascurrent is reduced to 55 A*1/60 A*2 (1.7 kV*1/2.1 kV*2) for thin paper. The bias isswitched automatically as the printer detects the thickness of the paper, and also switchablemanually on the printers control panel. For details on switching the transfer bias, refer tothe printers users manual.

Paper separationAfter the image transfer process, the paper is forcibly peeled off the drum by means of theseparation electrode. The separation electrode is located next to the transfer roller, givingthe positive charge to attract paper downwards.

*1: FS-7000+ model*2: FS-9000 model*3: Optional for FS-7000+ model only.

+

A

B

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Fusing

The toner on the paper is permanently fused onto the paper as it passes between the florin-finished heat roller (A below) and the pressure roller (B below) in the fuser unit. The toneris molten and pressed into the paper.

The heat roller has two halogen lamps, turning alternatively on depending on the size of thepaper passing through to maintain the preheat temperature at approximately 185C/365F.This ensures the even temperature dispersal over the long heat roller. See the picture belowand table in the next page.

A

B

Thermo-cutThermistor

EngineController

Heat distribution

4-15FS-7000+/FS-9000

Heater(s) activatedPaper size Middle heater Edge heater

Idle Off OnA3, A4 landscape On+ OnB4 On+ OnLetter landscape On+ OnLetter, A4, A5 On OffLedger On+ On

The heat roller temperature is constantly monitored by the engine control circuit using thea thermistor. In the above table, each heater is turned On as commanded by thethermistor. The On+ status for paper sizes of B4 and letter (landscape) mean that theheater is turned on a couple of seconds longer than that commanded by the thermistor.

4-16FS-7000+/FS-9000

Drum cleaning and erasing static charge

The drum needs to be physically cleaned of toner which is remaining on its surface in thedevelopment process. The cleaning blade (A below) is constantly pressed against thedrum and scrapes the residual toner on the drum off to the refresher roller (B below). Therefresher roller drives the toner to the spiral (fins) roller (C below). The waste toner iscollected at the output end of the spiral roller and sent back to the toner container, into thewaste toner reservoir.

D

A

C B

After the drum is physically cleaned, it then must be cleaned to an electrically neutral state.This is necessary to erase any residual positive charges, ready to accept the next uniformcharge. The residual charge is canceled by exposing the drum to the light emitted from theeraser LED (D above). This lowers the electrical conductivity of the drum surface makingthe residual charge on the drum surface escape to the ground.

4-17FS-7000+/FS-9000

Typical photo process timing chart

The following chart shows the signals used for photo processing. These signals activate thecorresponding device in the following timing sequences. A simple description for thesesignals follow.

MHVDR (Main High Voltage Drive) turns on the main charger bias for charging the toner. This signal is kept on during the job is being processed.

ERASER turns on the eraser (LED array) as soon as the motor begins to rotate revolving.

BIAS turns on the developer bias on the magnet roller. The duration of this signal isdependent on the current paper size. The bias is reduced to approx. 100 V between paperA. This avoids gray background effect by attracting excessive toner on the magnet rolleronto the drum (which will subsequently be collected back in the drum unit by means of thecleaning blade).

THVDR (Transfer High Voltage Drive) turns on the transfer bias. Note that the transferbias is weakened (from 12 kV to 600 V*1/+400 V*2) while paper is not present betweenthe transfer roller and the drum unit. This avoids contamination on the back side of paperB.

SHVDR (Separation-charger High Voltage Drive) turns on the separator to scrape thepaper off of the drum unit.


MOTOR

PAPER

MHVDR

ERASER

BIAS

THVDR

Page 1 Page 2

SHVDR

B

A

4-18FS-7000+/FS-9000

Paper feeding system

The paper feeder providing two paper cassettes is fitted to the printer externally at thebottom of the printer. The printer can be installed with up to 6 cassettes by adding up to twomore paper feeder options (PF-30 basically the same paper feeder fitted as the standardpaper feeder).The paper feeding system picks up paper from the cassette or the MP tray. At a precisetiming, it feeds it to the electrophotography system. It finally delivers the printed page toeither the face-down or face-up tray, or to the optional stacker/finisher.The figure below shows the components in the paper path within the printer. The sensors,solenoids, etc., are also described in the following pages.

PAPER FEEDING DIAGRAM

6 4

5 3

7

2

21

1 Paper cassette(PF-30 Paper feeder)2 Paper feed rollers3 Registration rollers+clutch4 Drum5 Transfer roller6 Fuser rollers7 Manual feed roller

4-19FS-7000+/FS-9000

Paper control signals

The following diagram shows the control signals that control the sensors and the rollers forguiding paper. The engine controller provides these signals in conjunction with theelectrophotography process that is driven by the main controller system.

Manualfeed

clutch

Regist. clutch

Engine Controller

Clutches

Sensors

Rollers

MP tray

FDW

SD*/F

UPSD

*JA

MFD

*

PAPF

L*

MM

OT*

RH

VDR

*

Face-downpaper-fullsensor

Face-downjam sensor

THVD

R*

REG

CL*

JAM

R*

SUBC

L*

ENVP

ASS*

MFE

ED*

MPF

PAP*

EMO

T*

Heat Roller

Drum

Paper Cassette

PF-30 Paper feeder

Paper Cassette

Transfer rollerRegist roller

Regist.jam

sensor

Papersensor

Papersensor

Envel.pass

sensor MPFpapersensor

Stacksolenoid

Face-upjam sensor

Pressure RollerSeparation

charger

M

M

Sub-clutch

4-20FS-7000+/FS-9000

Paper feeding components

The figure below shows the locations of the sensors, clutches, microswitches, and fans.Each number corresponds to the description in the table on the next page. The board Idsaccompany those parts mounted on the board.

0

54

3 6 2 ! 9 1 @ * ^ &

#$7%(

8

)

fl

fi

4-21FS-7000+/FS-9000

Control devices

Symbol Title Location Board

1 Controller box fan (FAN3) Controller box2 Printer side cover switch Face-down unit KP-5523 Face-down paper-full sensor Face-down unit4 Face-down jam sensor Face-down unit5 Face-up jam sensor Face-down unit6 Face-up/down solenoid Face-down unit7 Toner container switch Rear frame8 Interlock switchfront Front frame9 Drum/fuser fan (FAN1) Rear frame10 Tower sensor Rear frame KP-57411 Power supply fan (FAN2) Shield box12 Main motor Drive unit13 Registration clutch Drive unit14 Intermediate clutch Drive unit15 Registration jam sensor Rear frame16 Interlock switchtop MP feed unit17 Top cover switch MP feed unit18 Toner container sensor MP feed unit KP-60319 MPF paper sensor MP feed unit20 MPF paper size sensors 1 and 2 MP feed unit KP-57621 MPF solenoid MP feed unit22 Envelope feeder sensor MP feed unit

4-22FS-7000+/FS-9000

Paper feeder PF-30 control devices

Symbol Title Location Board

23 Right side cover switch24 Upper cassette paper sensor/bottom limit Upper cassette KP-583

sensor

25 Upper cassette paper size sensors 1/2/3 Upper cassette KP-58126 Upper cassette LED Upper cassette KP-58527 Upper cassette paper level switch Upper cassette28 Lower cassette paper sensor/bottom limit Lower cassette KP-583

sensor

29 Lower cassette paper size sensors 1/2/3 Lower cassette KP-58130 Lower cassette LED Lower cassette KP-58531 Lower cassette paper level switch Lower cassette32 Upper cassette switch Drive plate33 Lower cassette switch Drive plate34 Upper jam sensor35 Lower jam sensor36 Upper cassette base elevation motor Drive plate37 Lower cassette base elevation motor MP feed unit38 Intermediate stepping motor Drive plate39 Feed stepping motor Drive plate

4-23FS-7000+/FS-9000

Printing from paper feeder PF-30 cassettes

At the moment the logic controller finishes data processing, the logic controller passesPRINTN signal to the engine controller. The engine controller then activates the clutch forthe feed roller of the currently selected cassette (in the paper feeder PF-30) and the subclutch in the printer to start feeding paper. As the paper kicks the registration jam sensor,it momentarily stops there before the print data starts laser scanning on the drum.

When the laser scanner and the fuser are ready, the engine controller sends VSREQNsignal to the logic controller to verify the readiness of data. When the logic controller finishesdata processing, it sends VSYNCN and VDATA to the engine controller. Now the paper isreleased from the registration rollers and through under the drum unit, starting the imagedevelopment, transferring, and fusing. The paper having passed through the fuser unit kicksthe face-down or face-up paper jam sensor (and the paper-full sensor at the face-downoutlet, if the paper was destined to the face-down stack). When the paper is not detectedby these sensors in the expected time of period, depending on the current paper size, theengine controller halts printing and report the occurrence of a paper jam.The size of the paper currently in the selected cassette is acknowledged to the enginecontroller by means of the on-off status of the photosensors PT1, PT2, and PT3 in the paperfeeder PF-30, at the end of the paper cassette. The table below summarizes the on-offstatus of these photosensors in accordance with the supported paper sizes.

Sensor 1

Sensor 2

Paper

Bottom plate

Pick-up roller

Feed roller One-way clutch

Arm

Torque limiterRetard roller

PF-3

0 Fe

ed m

echa

nism

4-24FS-7000+/FS-9000

PAPER SIZE SENSING

Paper size PT1 PT2 PT3

Ledger (portrait) Off On OnA3 (portrait) On On OnB4 (portrait) Off Off OffLegal (portrait) Off Off OnB5 (portrait) Off On OffLetter (landscape) On On OffA4 (landscape) On Off OnA5 (landscape) On Off OffOff=high/On=low

Printing from the MP tray

The width of paper in the MP tray is detected by the MPF paper sensor (see page Chapter4-20). When the controller is ready to print, the engine controller activates the clutch for themanual feed roller. The manual feed roller pulls the paper on the MP tray and sends itforward to the registration roller after the envelope pass sensor is cleared. The rest of theprinting process is the same as that of the paper feeder PF-30 explained on page Chapter4-23.The size of the paper currently on the MP tray is detected by two sensors (See page Chapter4-20). MPF paper size sensors 1 and 2 (PT1 and PT2) are activated in accordance with thesetting of the paper guides (adjusted manually). The table in the next page summarizes theon-off status of these sensors.

4-25FS-7000+/FS-9000

MP TRAY SIZE SENSING

Paper size PT1 PT2

A3 On OnLedger On OnA4 (landscape) On OnLetter (landscape) On OnB4 Off On8" width Off OnLetter (portrait) Off OffLegal Off OffA4 (portrait) Off Off8" width (portrait) Off OffB5 (portrait) Off OffA5 (portrait) Off OffHagaki Off Off5" width Off Off

Printing from the optional envelope feeder

The envelope feeder EF-1 (or universal feeder UF-1*) is electrically connected to the printervia a connector at the right side panel. This connector provides connection of the paperpresence and the envelope feeder motor to the printers engine system.The envelope feeder motor sends the paper towards the registration roller after theenvelope pass sensor is cleared. The rest of the printing process is the same as that of thepaper feeder PF-30 explained on page Chapter 4-23.

*: Optional for FS-7000+ model only.

4-26FS-7000+/FS-9000

Paper jam detection

The sensors illustrated in the following diagram are used to track the paper while it is movingthrough the printer. More detailed sensor information can be found from the diagrams insection Paper feeding components on page Chapter 4-20.

A

B

C

D

E

1

HI

2

3

4

5

6

G

F

4-27FS-7000+/FS-9000

Each sensor coded above represents the following locations. When a paper jam occurs, thecode(s) is actually indicated on the message display in order for the user to easily knowwhere to remove the jammed paper.

Code Suggested jam locationA Envelope feeder EF-1/UF-1* (optional)B MP trayC Top paper feeder jam doorD Middle paper feeder jam doorE Bottom paper feeder jam doorF Document finisher DF-30*/DF-31,Bulk paper stacker ST-30,

Mailbox/sorter SO-30 (optional)G Face-up stack outlet/Printer side coverH Paper feed unit/Fuser unitI Duplexer DU-30*/DU-31 (optional)1 First paper cassette2 Second paper cassette3 Third paper cassette (optional)4 Fourth paper cassette (optional)5 Fifth paper cassette (optional)6 Sixth paper cassette (optional)

*: Optional for FS-7000+ model only.

4-28FS-7000+/FS-9000

Message display at a paper jam

When paper jammed within the printer system, the sensor(s) triggers the signal to theengine controller, which indicates the jam position. At the same time, the engine controllercauses the message display to show Open front cover. This urges the user to refer to theinstructions that is affixed at the back side of the front cover of the printer.A sample of the display transition when a jam occurred follows. Read through from top tobottom.

When a paper jam occurs, the display shows:

After opening the front cover, the actual jampositions are indicated:

As the paper is removed in order of the display,the specific position code will go out.

When all jam locations are cleared of jam, thedisplay shows:

Close the front cover. The printer startswarming up.

When the printer reverts to normalcy, theprinting job resumes.

Paper jamOpen front cover

Paper jamC, F, G, H, I, 6

Paper jamF, G, H, I, 6

Front coverOpen

Please wait

ProcessingPAR 600 A4 001

4-29FS-7000+/FS-9000

Print timing chartsSignal and symbols

Signals and symbols DescriptionMMOT Main motorSCANER Polygon motorSCRDY Polygon motor steady rotationLASER LaserREGCL Registration clutchJAMR Registration jam sensorFAMFD Face-down jam sensorPAPFUL Face-down paper-full sensorSUBCL Intermediate clutchFDWSD Face-up/down solenoidSUBM_1 Intermediate stepping motor (Paper feeder PF-30; upper)SUBM_2 Intermediate stepping motor (Optional paper feeder PF-30; middle)SUBM_3 Intermediate stepping motor (Optional paper feeder PF-30; bottom)STML_3 Feed stepping motorPAPSEN1_1 Upper jam sensor (Paper feeder PF-30; upper)PAPSEN2_1 Lower jam sensor (Paper feeder PF-30; upper)PAPSEN1_2 Upper jam sensor (Optional paper feeder PF-30; middle)PAPSEN2_2 Lower jam sensor (Optional paper feeder PF-30; middle)PAPSEN1_3 Upper jam sensor (Optional paper feeder PF-30; bottom)PAPSEN2_3 Lower jam sensor (Optional paper feeder PF-30; bottom)MHVDR Main high voltage drive (Main charger)ERASE Eraser LED (LED array)BIAS Developing roller biasMPFBCL MPF solenoidMPFSIZE MPF paper size sensor 1 and 2

Detecting no presence of paper at this time indicates paper jam.Detecting presence of paper in this period of time indicates paper jam.

4-30FS-7000+/FS-9000

0

MM

OT

SCAN

ER

SCRD

Y

LASE

R

REG

CL

JAM

R

JAM

FD

PAPF

UL

SUBC

L

FD

WSD

SU

BM_1

SU

BM_2

SU

BM_3

ST

ML_

3

PS

EN1_

1

PS

EN2_

1

PS

EN1_

2

PS

EN2_

2

PS

EN1_

3

PS

EN2_

3

M

HVD

R

ER

ASE

BI

AS

16(S

)15

1413

1211

109

87

65

43

21

1251

510

0

8983

3800

2990

2990

845

880

515

2658

1740

3518

8983

8983

4500

6643

6340

8483

1251

5

3883

2988

2870

2505

1875

1510

3653

4513

2735

4878

4648

5843

3730

5013

5448

3720 38

65

3875

5488

8571

6628

8771

5788

7931

7963

1006

8

9513

7548

5820

6443

6443

8983

8488

1041

6 106

11

4300

43

00VS

REQ

4300

6172

6060

64

43VS

REQ

8315

6198

9092 9070

8273

7370

9691

1123

511

213

1000

312

211

1214

6

6343

6428

6353

6353

6353

5133

4293

2150

1155

55 105

2248

6208

4018

3365

3023

2370

1375

100

1000 (m

s)Print timing chart

FS-7000+Line speed=125 mm/s; feed speed=263 mm/s [paper feeder], 125 mm/s [MP tray]

A4 landscape feed [210 mm]/28 ppm/Cass 6

4-31FS-7000+/FS-9000

0

MM

OT

SCAN

ER

SCRD

Y

LASE

R

REG

CL

JAM

R

JAM

FD

PAPF

UL

SUBC

L

FD

WSD

SU

BM_1

SU

BM_2

SU

BM_3

ST

ML_

3

PS

EN1_

1

PS

EN2_

1

PS

EN1_

2

PS

EN2_

2

PS

EN1_

3

PS

EN2_

3

M

HVD

R

ER

ASE

BI

AS

16(S

)15

1413

1211

109

87

65

43

21

1587

510

0

3800

2990

2990

3928

845

880

515

4703

2538

5996

4500

8323

1184

3

1587

5

4668

2870

2505

1875

1510

53335

698

3533

7691

4528

8686

6693

3720 38

65

3875

6813

6813

5973

6628

1045

1

7468

1077

210

750

1174

411

883

1557

115

506

1459

514

573

7548

7500

7878

7852

7740

1187

5

8468

1137

1

1229

1

81

23VS

REQ

1234

3

1234

380

208321

7326

6361

4338

4163

6328

8033

3168

2173

100

100

105

55

1155

2150

6428

7148

7148

8033

8033

8023

7128

4300

7370

827381

23

8123

43

00VS

REQ

1025

1

1129

111

323

1119

3

1209

6

1234

3

1234

3

4300

0 (m

s)

A3 [420 mm]/16 ppm/Cass 6

4-32FS-7000+/FS-9000

0

MM

OT

SCAN

ER

SCRD

Y

LASE

R

REG

CL

JAM

R

JAM

FD

PAPF

UL

SUBC

L

FD

WSD

M

PFBC

L

M

PSIZ

E

M

HVD

R

ER

ASE

BI

AS

16(S

)15

1413

1211

109

87

65

43

21

1274

9

5788

7548

6677

1497

500

525

6577 66

28

5580

5605

7589

8717

6877

4500

1274

9

8805 9

005

8468

1006

810

650

1274

9

1000

3

9747

5820

6677

3800

43

00VS

REQ

6677

100

175

175 0 100

6340

9217

4300

6428

5080

1084

512

445

1144

711

469

9925

9070

9092

8197

8165

7370

6270

4300

4300

6172

66

77VS

REQ

8549

9217

9217

0(ms)

100

5212

9217

1190

6060

8273

1238

0

A4 [210 mm]/26 ppm/MP tray [Cassette mode]

4-33FS-7000+/FS-9000

FS-9000Line speed=169 mm/s; feed speed=263 mm/s [paper feeder], 169 mm/s [MP tray]

A4 landscape feed [210 mm]/36 ppm/Cass 6

01

23

45

67

89

1011

1213

14(S

)

MM

OT

SCAN

ER

SCRD

Y

LASE

R

REG

CL

JAM

R

JAM

FD

PAPF

UL

SUBC

L

FDW

SD

SUBM

_1

SUBM

_2

SUBM

_3

STM

L_3

PSEN

1_1

PSEN

2_1

PSEN

1_2

PSEN

2_2

PSEN

1_3

PSEN

2_3

MH

VDR

ERAS

E

BIAS

0(ms)

1096

111

883

3339

4383

3347

9664

0362

1678

2548

1264

2061

3177

4135

5862

2059

6575

7470

8086

9272

2383

6588

3699

7477

7393

7979

0391

0895

1610

685

3007

5594

3659

6325 63

9580

0865

9682

0922

7356

6445

9863

3011

3163

3159

6334

115

1719

796

2385

2849

4454

3574

6232

2497

4100

3338

5997

1867

3470

2722

4323

1514

3115

2392

3991

886

2486

1741

3341

529

2124

1409

3009

189

8333

187

1096

149

6065

6861

6177

71

4-34FS-7000+/FS-9000

A3 [420 mm]/20 ppm/Cass 6

01

23

45

67

89

1011

1213

14(S

)

MM

OT

SCAN

ER

SCRD

Y

LASE

R

REG

CL

JAM

R

JAM

FD

PAPF

UL

SUBC

L

FDW

SD

SUBM

_1

SUBM

_2

SUBM

_3

STM

L_3

PSEN

1_1

PSEN

2_1

PSEN

1_2

PSEN

2_2

PSEN

1_3

PSEN

2_3

MH

VDR

ERAS

E

BIAS

0(ms)

1362

011

610

991

3951

1099

148

1478

1674

6710

478

4830

7833

7381

1039

335

7776

1572

2910

226

7089

1009

072

4895

9210

245

1259

977

7910

778

7928

1030

110

925

1327

729

7570

3537

0177

3864

1894

1766

2196

1820

7660

8936

9977

5911

4960

7144

7577

6154

6073

4477

7762

110

2573

802

3253

2846

6918

5826

8916

2497

6560

5333

8423

1865

4340

3461

7527

1509

3979

3213

7277

870

3341

6628

512

2979

2232

6297

186

1099

118

413

620

4978

7981

7411

1042

3

4-35FS-7000+/FS-9000

A4 [210 mm]/26 ppm/MP tray [Cassette mode]0

12

34

56

78

910

1112

1314

(S)

MM

OT

SCAN

ER

SCRD

Y

LASE

R

REG

CL

JAM

R

JAM

FD

PAPF

UL

SUBC

L

FDW

SD

MPF

BCL

MPS

IZE

MH

VDR

ERAS

E

BIAS

0(ms)

1099

111

683

5938

1883

5946

6964

2260

8778

4446

8464

3961

8579

3985

258

3475

9069

5887

1470

9682

4588

4910

001

7651

9405

7776

9888

9529

1072

814

746

8464

3910

8363

4410

991

6269

8020

6469

8222

2852

9340

156

5650

857

7053

8271

29

189

8333

187

1096

148

3265

8762

1579

69

4-36FS-7000+/FS-9000

Basic engine functions

This section presents a general functional overview of the engine system of the printer. Itwas intended to provide a comprehensive knowledge on basic functions that the enginesystem performs during printing. The following printer functions are covered:

Engine controller system Main logic controller system Paper feed system Power supply system

4-37FS-7000+/FS-9000

Engine controller system

The engine controller provides control over all print engine activities. It drives laserdepending on the video data transmitted from the main controller, provides control over thedevices for paper transportation, such as motors, clutches, solenoids, the heater lamp, theeraser, etc., and collects information given by the sensors.

The engine controller is also responsible for the following systems, explained step by stepthrough the following pages:

Configuration memory

The engine controller uses a flash memory to store the user-selected parameters forconfiguring the printer. The flash memory is driven by +5 V power and designed to standrewriting operations of at least 100,000 times at an identical address.

High-voltage generator

The engine controller produces clocks (HVCLK1 and HVCLK2) and apply programmeddivisor to generate high-voltage outputs for main charging. The clock oscillation can betoggled on and off by the engine controller CPU.

Laser scanner control

In order to activate the laser scanner, the engine controller does the following tasks:

Generation of laser timing Polygon motor activation (start-up and stabilized states) Monitoring laser beam paths

Polygon motor control

The output frequency signal to the polygon motor is generated by the engine gate array asit divides the engine system clock (16.9344 MHz).The revolution of the polygon motor (N) = 10*f, where f is the clock frequency (1769.9*1/2397.3*2 Hz) = 17,699*1/ 23,973*2 rpm.As the laser beam reaches the beam detector sensor (See page Chapter 4-6), the sensorboard generates the horizontal synchro signal (PD*). This signal makes the engine gatearray consequently turn the video output signal (VDO*) and the APC signal (LONB*) highwhich respectively activate the laser light and the APC controller.The engine CPU attempts to detect the horizontal synchronization signal so that the laserdiode is normally triggered. If the horizontal synchronization output is not found after thelaser driving current control (LENB*) is set low, the engine CPU recognizes it as the failureon the APC board and gives the E3 error.


4-38FS-7000+/FS-9000

Safety interlock

For safety purpose, and in order for the product to conform to the safety standards required,the printer is facilitated with the safety interlock circuit.

If the top and/or front cover is open, the laser emission is stopped by means of the followingcircuit (simplified):

Powersupply 24 V

Frontcoverswitch

Topcoverswitch

Motors,clutches, etc.

Laser diode

Engineboard

APCboard

5 V

When either the top or front cover is open, it cuts the +5 V power from the engine board tothe scanner APC circuit off, in turn deactivating the laser diode.

4-39FS-7000+/FS-9000

The engine gate arrays

These two engine gate arrays are supplementary devices to the engine CPU. Both are a100-pin CMOS-type QFP type that has the internal blocks of functionality as shown below.

GATE ARRAY A (U2)

This contains the following functional segments.

Address decoder

Registers

Data selector

Interface

Laser control

Engine CPU address hold

Overrun detect

Test print mode ckt

Interrupt process

Port mode control

Print density

High-v clock gen.

Decode/GA flush

Interlock control

Ports A-F

4-40FS-7000+/FS-9000

PIN ASSIGNMENT GATE ARRAY A (U2)Port A (8 bit) Address 2X00 H

Pin No.4899321617141011

Circuit signalERSDETLCOPNTBDETN

TCOPSUBCLNREGCLNFDWSDNFUPSDN

GA signalPA7PA6PA5PA4PA3PA2PA1PA0

Direct.ININININ

OUTOUTOUTOUT

Function RemarksEraser

Cover sensorToner containerCover sensor

Sub feed clutchRegist. clutch

Main unit solenoidMain unit solenoid

Eraser wire cut, L: CutLeft cover status, H: OpenToner container exist., L: ExistTop cover status, H: OpenSub feed clutch drive, L: EngageRegist. roller clutch drive, L: EngageMain unit solenoid F/D, L: F/DMain unit solenoid F/U, L: F/U

Port C (8 bit) Address 2X10 H Pin No.

4547222389

3536

Circuit signalLASER

TWDETN

TNENDNTCOUNTNTNMDETTNMOTN

GA signalPC7PC6PC5PC4PC3PC2PC1PC0

Direct.OUTINININ

OUTIN

OUTOUT

Function RemarksScanner

Waste toner conveyer sensor

Threshold sensorPage counterToner motorToner motor

Laser drive current, H: Laser offWaste toner conveyer exist., L: ExistReserved portToner run-out threshold, L: ThresholdPage counter drive, L: Count upToner motor overcurrent detection, H: Over currentToner motor drive, L: Drive

Port B (6 bit) Address 2X08 HPin No.

121920211831

Circuit signalJAMRGN

EVPASNRHVDRN

THVRDRNILOCKOP

GA signalPB5PB4PB3PB2PB1PB0

Direct.IN

OUTIN

OUTOUTIN

Function RemarksRegist. sensor

Envelope feederHigh-volt. boardHigh-volt. board

Interlock

Registration sensor, L: PresentReserved portEnv. feeder paper exit detection, L: PresentSeparation charger drive, L: OnReverse transfer bias drive, L: OnInterlock sens., H: 24 V off

Port E (6 bit) Address 2X60 HPin No.

10026175

Circuit signalHVOL

THPIDRN

THVDRNERASENMHVDRN

GA signalHVOL

REVBN

THVDRERASENMHVDR

Direct.OUTOUTOUTOUTOUTOUT

Function RemarksHigh-volt. boardHigh-volt. board

High-volt. boardEraser

High-volt. board

Transfer limit voltage select, H: Thick paper; L: Thin paperPaper-to-paper signal output, L: Paper-to-paperReserved portTransfer charger control output, L: OnEraser control output, L: OnMain charger control output, L: On

Port F (1 bit) Address 2X61 HPin No.

50Circuit signal

EGIRNGA signal

PF0Direct.OUT

Function RemarksMain controllerCommunication error output, used as EGIR

Port D (8 bit) Address 2X18 HPin No.

3788331349872425

Circuit signalSTOPN

HTRDYN

THMDCLOWTMP

GA signalPD7PD6PD5PD4PD3PD2PD1PD0

Direct.OUTIN

OUTOUTIN

OUTOUTOUT

Function RemarksA-03G/A

Fuser

FuserFuser

WDT timeout, L: TimeoutFuser heater ready, L: ReadyReserved portReserved portFuser thermistor blown, H: BlownFuser heater idle, H: ReadyReserved portReserved port

4-41FS-7000+/FS-9000

Dataselector

Polygon motorspeed correction

Registers

Addressdecoder

Ports G-M

GATE ARRAY B (U6)

4-42FS-7000+/FS-9000

Port H (8 bit) Address 2XC1 HPin No.

1314151621222324

Circuit signal

OPSEL2OPSEL1OPSEL0

GA signalPH7PH6PH5PH4PH3PH2PH1PH0

Direct.OUTOUTOUTOUTOUTOUTOUTOUT

Function Remarks

OptionsOptionsOptions

ReservedReservedReservedReservedReservedOption handshake 2Option handshake 1Option handshake 0

Port I (8 bit) Address 2XC2 HPin No.

2526272829303132

Circuit signalEVMOTEVUNTNEVPAPNHANDSN

PF7NMPFSDNMPPAPN

GA signalPI7PI6PI5PI4PI3PI2PI1PI0

Direct.OUTININININ

OUTININ

Function RemarksEnvelope feederEnvelope feederEnvelope feeder

PF-7PF-7

MP trayMP tray

Env. feeder motor drive, H: OnEnv. feeder existence, L: ExistEnv. feeder paper exist., L: ExistPF-7E paper transit sensor, L: TransitPF-7E presence, L: PresentMP tray solenoid drive, L: Feed onMP tray paper presence, L: PresentReserved

Port J (8 bit) Address 2XC3 HPin No.

3335363738394243

Circuit signalJAMFUNJAMFDNFAN1FNFCOP

ETNEMPNFAN3N

DVFMLTNFUFMLTN

GA signalPJ7PJ6PJ5PJ4PJ3PJ2PJ1PJ0

Direct.ININ

OUTININ

OUTININ

Function RemarksSensorSensorFan 1

Sensor

Fan 3Developer fuse

Fuser fuse

Face-up outlet paper presence, L: PresentFace-down outlet paper presence, L: PresentMain unit fan revolution control (during printing), L: HighFront cover status, H: OpenToner container gauge input, L: No tonerFan 3 (cont. box) drive, L: OnDeveloper life fuse, H: IntactFuser life fuse, H: Intact

Port K (8 bit) Address 2XC4 HPin No.

4445464748495051

Circuit signalDVUNTNDRUNTNFUUNTNMPSIZE2MPSIZE1TVSENTISEN

GA signalPK7PK6PK5PK4PK3PK2PK1PK0

Direct.INININININININ

OUT

Function RemarksDeveloperDrum unit

FuserMP trayMP tray

High-volt. boardHigh-volt. board

Developer presence, L: PresentDrum unit presence, L: PresentFuser presence, L: PresentMP tray paper width 2MP tray paper width 1Transfer voltage, L:

4-43FS-7000+/FS-9000

Port 0 (5 bit)Pin No.

4539383736

Circuit signal

VSREQNIPCINTGINT

MMTCLK

CPU signalP04/XT1

PO3/INTP3PO2/INTP2PO1/INTP1

P00/INTP0/TI0

Direct.IN

OUTINININ

Function Remarks

ControllerFinisher

A-01/02 gate arrayMain motor

Reserved portVertical synchronization signal request, L: RequestFinisher IPC interrupt, H: InterruptG/A interrupt (start-up interrupt)Main motor FG (start-up interrupt)


5453525150494847

Circuit signalOUTPE

WEESCKWEEDOWEECSWEEDI

LMPMON

CPU signalP17/AN7P16/AN6P15/AN5P14/AN4P13/AN3P12/AN2P11/AN1P10/AN0

Direct.OUTOUTOUTOUTIN

OUTOUTIN

Function RemarksController

Counter EEPROMCounter EEPROMCounter EEPROMCounter EEPROM

Video data output enable, H: EnabledPage counter EEPROM serial lock outputPage counter EEPROM serial data outputPage counter EEPROM chip select output, H: SelectPage counter EEPROM serial data inputReserved portReserved portHeater lamp blown input


6463626160595857

Circuit signalEESCKEEDTEECS

TESTPRN*

OPSCKNOPSOOPSI

CPU signalP27/SCK0*/SCL

P26/SO0/SB1/SDA1P25/SI0/SB0/SDA0

P24/BUSYP23/STB

P22/SCK1*P21/SO1P20/SI1

Direct.OUT

IN/OUTOUTININ

OUTOUTIN

Function RemarksDrum EEPROMDrum EEPROMDrum EEPROM

OptionOptionOption

Drum EEPROM serial clock outputDrum EEPROM serial data input/outputDrum EEPROM chip select output, H: SelectTest print mode, L: Test modeReserved portSerial communication control, clock outputSerial communication control, data outputSerial communication control, data input


87654321

Circuit signalPRINTNCPRDY

SCRDYNEUSELFLSELRDYN

VSYNCNPTOUT

CPU signalP37

P36/BUZP35/PCLP34/TI2P33/TI1P32/TO2P31/TO1P30/TO0

Direct.INININ

OUTOUTOUTIN

OUT

Function RemarksControllerControllerScanner

ControllerControllerController

Print request, L: RequestController power ready, H: ReadyPolygon motor steady rotation, L: Steady state

Print ready, L: ReadyVertical synchronization, L: OnPort output (spare)


1716151413121110

Circuit signalAD7AD6AD5AD4AD3AD2AD1AD0

CPU signalP47/AD7P46/AD6P45/AD5P44/AD4P43/AD3P42/AD2P41/AD1P40/AD0

Direct.IN/OUTIN/OUTIN/OUTIN/OUTIN/OUTIN/OUTIN/OUTIN/OUT

Function RemarksAddress/data busAddress/data busAddress/data busAddress/data busAddress/data busAddress/data busAddress/data busAddress/data bus


2625232221201918

Circuit signalA15A14A13A12A11A10A9A8

CPU signalP57/A15P56/A14P55/A13P54/A12P53/A11P52/A10P51/A9P50/A8

Direct.OUTOUTOUTOUTOUTOUTOUTOUT

Function RemarksAddress busAddress busAddress busAddress busAddress busAddress busAddress busAddress bus


3433323130292827

Circuit signalASTB

PAPFULWRNRDN

CODE1CODE0FA16FA15

CPU signalP67/ASTBP66/WAIT*P65/WR*P64/RD*

P63P62P61P60

Direct.OUTIN

OUTOUTOUTOUTOUTOUT

Function Remarks

Sensor

Flash ROMFlash ROM

Address strobePaper-full detection, H: Paper-fullWriteReadDestination code 1Destination code 0Address A16 for flash ROMAddress A15 for flash ROM

The engine CPU

PIN ASSIGNMENT ENGINE CPU

4-44FS-7000+/FS-9000

Power supply

The power supply contains the AC and DC power inputs and outputs. The high voltage biasgenerator circuit is mounted on a separate board. A simplified schematic diagram and apower distribution diagram are shown on the following pages.

AC INPUT AND RECTIFIERThe primary AC input power arrives at CN1 and enters AC line filter circuit (L1, L2, C1, C2,etc.). BD1 rectifies it to DC; Q1 provides switching on it for downverting by T1 to develop+24 V and +5 V AC.

24 V DC POWER LINEThe 24 V AC appearing at the secondary side of T1 is rectified by D30 and smoothed by C31,C32, etc., and distributed through CN3. The 24 V DC line is represented as VDD orVDDCOM and used to feed the following engine component: Face-up/down stack solenoids, MP tray paper feed solenoid Clutches (registration, intermediate) Fans High-voltage generator (board) Main motor, laser polygon motor, toner motor Clutches, motors, solenoids within the option units Laser APC, fuser heater control, eraser LED

The 24 V DC power is forcibly interrupted for safety whenever the printer top cover or thedrum unit access door is opened. For details, see the Safety interlock section, page Chapter4-34.

5 V DC POWER LINEThe +5 V DC line is generated by switching (IC40) the +24 V DC to develop the 5 V AC whichis subsequently rectified and smoothed by D40, C40, etc. It is also distributed through CN3.The main controller circuits, sensors, engine controller circuits, etc., are fed by the +5 V DCline (also referred to as VCC).

POWER PROTECTION CIRCUITA fraction of the +24 V DC power is connected to the protection diode PC1 for providesprotection action for the power supply. In case the output of the 24 V DC line is short-circuited, the diode segment of PC1 drives the transistor segment of PC1 to turn on Q2which in turn disconnects the output of switching regulator Q1.

FUSER HEATER POWER CONTROLIn the primary circuit, two fuser heater lamps and a thermostat is connected parallel acrossCN2. The heater lamps are controlled by triacs TRC20 and TRC21. Each is turned on whenpin 1 (HEATER1) or 2 (HEATER2) is triggered, respectively energizing the appropriateheater lamp.For details on the fuser function, refer to Fusing on page Chapter 4-14.

4-45FS-7000+/FS-9000

POWER SUPPLY CIRCUIT

ACIn

put

Pow

erSw

itch

Fuse

Noi

seFi

lter

Rec

tifie

rFi

lter

Filte

r

Filte

r

+24

V

GND

+5

V

LAM

PMO

N

HEA

TER

1

HEA

TER

2

Hea

ter

Switc

hing

Sign

als

GND

Tran

sfor

mer

Switc

her

(FET

)

Phot

o-co

uple

r(V

oltag

e reg

ulator

)

Ove

rcur

rent

Det

ecto

r

Phot

o-Tr

iac

Phot

o-Tr

iac

Rec

tifie

r/Fi

lter

Tran

s-fo

rmer

(Curr

ent)

Tria

c

Tria

cFu

se

Fuse

Hea

ter S

Hea

ter S

/C

Hea

ter C

Hea

ter b

low-

out

dete

ctio

n

Switc

her

(IC)/

Out

put

(Tr)

4-46FS-7000+/FS-9000

Power distribution

Main Motor

DuplexerDU-30*/DU31

Paper feederPF-30

Sub Clutch

Regist Clutch

Dvrly PWB

DRRLY PWB Drum PWB Eraser

Fan1

Power SupplyPWB

Heater Drive Circuit

FUP/FDW Solenoid

APC A PWB APC B PWB (Laser Diode)

Polygon Motor

Envelope feeder EF-1or Universal feeder UF-1*

Deve PWB Toner Motor

ENV PCB

MPF Solenoid

Options

Options

OptionsCON3PWB

CON2PWB

Fan3

Fan2

TopCoverInter LockSwitch

Front CoverInter LockPWB

HV PWB

Engine PWB

YC5-

1,2

YC3-

7.3YC

1-1

to 4

YC1-

1 to

3

YC3-

1YC

2-1

YC2-

1

YC2-

1YC

2-7

YC1-

7

YC1-

7

YC2-

2

YC78

1-1

YC78

2-2

YC1-

1

YC1-

1

YC8-

8YC

6-A7

YC7-

1YC

7-2

YC6-

1YC

4-13

YC14

-13

YC14

-1YC

12-2

YC13

-13

YC6-

1YC

9-4

+5

V

+5

V

YC3-1 to 3 YC6-2YC4-4YC

2-1

YC4-

23 to

26

YC3-

1 to

3YC

2-2

G/A

REG

+24 V 2

+24 V 2

+24 V 2

+24 V 2

+24 V

NO

NC

COM

NO

NC

COM

+24 V 2

2A

(+5V) (+5V)

*: Optional only FS-7000+

4-47FS-7000+/FS-9000

Logic controller system

The logic controller system does the following: Communicates with the host computer to receive data at one of the printers interface Analyzes and translates the print data to be the dot data in the raster memory Communicates with the engine system to discern readiness for printing Stores fonts and macro information

The main logic controller has specifications as shown in the following section. A simplifieddiagram is illustrated on page Chapter 4-48.

Main logic controller overview

SpecificationItem FS-7000+ FS-9000

CPU PowerPC603e/166 MHz PowerPC740/233 MHzSystem ROM size 4 MBRAM size

Standard 8 MB 16MBOption 72 MB (in two SIMM sockets)

FontsResident 4 MB

Application programinterface 512 kBMemory card 1 slot, JEIDA4.2/PCMCIA2.1Interface

Parallel High-speed bi-directional[IEEE 1284]

Serial RS-232C/422A(Jumper setting)

Option KUIO [for harddisk unit HD-2,network card]

Enginecommunication Serial interfaceFront panelcommunication Serial interfaceOther features

Smoothing KIR2 (Vector compensationmethod)

Toner saver EcoPrint [On/Off]Enlarge/reduction Main scan/sub scanVideo clock 45.14834 MHz 33.3333 MHz

4-48FS-7000+/FS-9000

Main logic controller block diagram

LD0-

15

OE

SIM

M1

4,6,

16,3

2MB

YS02

OE

SIM

M2

4,6,

16,3

2MB

YS03

YC04

YC02

YC03

YC01

YC06

CARD

Engi

ne I/

F

LS36

7x4

LS24

5x2

X02

TBM

(Sys

tem)

66.6

667M

Hz

X01

TBM

(Vide

o)

22.5

7417

MH

z

FS-7

000+

:+5V

sup

ply

YC05

Seria

l I/F

YC07

TD

ebug

ger

Para

llel I

/F

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ORS

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LN3

ORS

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INIT

AUT

OFD

etc

U20

APP

MBC

G46

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117

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84

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TT3

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7

1 32

7 98

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AM(1M

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13

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FONT

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BVD1

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CEHN

CAR

DCEL

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ARDW

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ATA

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19

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17

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06

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CA1

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ata

Addr

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21

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21

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CPU

PPC6

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166M

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(33.33

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MR

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0

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0-10

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4

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MD

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(1Mbit

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API

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7U0

8JU0

9E

R53

R52

4-49FS-7000+/FS-9000

Printing data processing

The printer communicates with the host computer for receiving the print data at one of theprinters interfaces and temporarily store them in the interface buffer. The main logiccontroller analyzes the data for translating them into the dot data according to the originalprint image. The resultant dot data are depicted in the raster memory (DRAMs).While data processing is in course, on the other hand, the main logic controller CPU talksto the engine CPU via the engine interface U02, to discern the readiness of the printersengine for printing.If the engine is ready to start printing, the main controller issues print signal towards theengine controller which request the paper feed. In synchronization with the procession ofthe paper within the printer, U03 releases video data in the raster memory. Thus the videodata are transferred to the laser scanner together with the horizontal synchronization signaland the video clock.On reception of the video data, the laser diode turns on and off to constitutes the print imageover the drum. The image on the drum, referred to as the static latent image, is applied withtoner, transferred onto the paper, and finally fused permanently on the paper by means ofheat and pressure.

4-50FS-7000+/FS-9000

Main logic component

CPU (U01)A PowerPC603e/166 MHz*1/ PowerPC740/233 MHz*2 is used. operating in 32-bit mode.Theexternal clock of 33.33 MHz is quintupled*1/septupled*2 to 166 MHz*1/233 MHz*2 by internalPLL circuitry.

ASIC (U02)This ASIC includes the following circuitrys as module: Parallel interface Serial interface (including UART) DMA controller DRAM controller Engine communication Front panel communication Optional equipment interface

ASIC (U03)This ASIC implements generation of video data to print and deployment of the video output.This includes: KIR2 (Image smoothing) EcoPrint (Toner saver) Computation for video deployment over VRAM (raster memory)provides control over: Memory card Font management System DIMMand this ASIC provides conversion on such devices as the memory card, fonts, etc., whichuse 16-bit data bus width for the 32-bit CPU.

API ROM socket (U09E)

This accepts an API (Application Program Interface) ROM. The 16-bit type EPROM isconverted to 32-bit inside ASIC, U03. Therefore, a 32-bit access done by CPU triggerscauses access two times.The API EPROM should have the following specifications:

Socket No.: U09ESize: 4 MbitsComposition: 256 k by 16 bitsAccess speed: >120 ns

The following table shows the pin-to-signal assignments for the ROM to be used.


4-51FS-7000+/FS-9000

API ROM socket pin assignment

Pin Terminal Pin TerminalNo. description Signal name No. description Signal name

1 Vpp VCC (fixed) 21 A0 FA02 CE* FONTOEN3 22 A1 IOA23 D15 LD15 23 A2 IOA34 D14 LD14 24 A3 IOA45 D13 LD13 25 A4 IOA56 D12 LD12 26 A5 IOA67 D11 LD11 27 A6 IOA78 D10 LD10 28 A7 IOA89 D9 LD9 29 A8 IOA910 D8 LD8 30 GND GND11 GND GND 31 A9 IOA1012 D7 LD7 32 A10 IOA1113 D6 LD6 33 A11 IOA1214 D5 LD5 34 A12 IOA1315 D4 LD4 35 A13 IOA1416 D3 LD3 36 A14 IOA1517 D2 LD2 37 A15 IOA1618 D1 LD1 38 A16 IOA1719 D0 LD0 39 A17 IOA1820 OE* GND (fixed) 40 VCC VCC

* Negative logic

4-52FS-7000+/FS-9000

System DIMM (YS01)

This is the device that contains the firmware information for controlling the controller CPU.Depending on the firmware version, this device will be a flash ROM, that is rewritable, or amasked ROM, in 72-pin DIMM configuration.

RAM (U10 and U13)

Two 72-pin SIMM sockets are provided for memory expansion. The memory is expandablewith PC SIMMs up to 72 MB*1/64 MB*2.FS-9000 comes with 16 MB of SIMM inserted into socket YS03.

The expansion SIMM should meet the following requirements:Number of sockets: 2Socket Nos.: YS02/YS03Pins: 72Size: 4/8/16/32 MBAccess speed:

4-53FS-7000+/FS-9000

KUIO interface (YC02/YC03)

This is the interface for a slot-in option device harddisk drive HD-2 and networkbordconforming to the KUIO interface specifications.* Hard disk drive HD-2 can be inserted only into YC02.

The pin assignment for the connector is given below.

Pin PinNo. Terminal Signal No. Terminal SignalA1 VCC (+5 V) VCC A9 GND GNDB1 VCC (+5 V) VCC B9 A8 IOA8A2 VCC (+5 V) VCC A10 A7 IOA7B2 A21 IOA21 B10 A6 IOA6A3 GND GND A11 A5 IOA5B3 NC NC B11 A4 IOA4A4 NC NC A12 A3 IOA3B4 A16 IOA16 B12 A2 IOA2A5 GND GND A13 GND GNDB5 A15 IOA15 B13 NC NCA6 A14 IOA14 A14 OPnCS OPnCSNB6 A13 IOA13 B14 OPnACK OPnACKNA7 A12 IOA12 A15 OPnIRN OPnIRNB7 A11 IOA11 B15 NC NCA8 A10 IOA10 A16 CTLRDY CTLRDYnB8 A9 IOA9 B16 OPnDREQ OPnDREQ

n = 1 or 2

Pin PinNo. Terminal Signal No. Terminal SignalA17 GND GND A24 D8 LD8B17 OPnDACKN OPnDACKN B24 D7 LD7A18 IOR* LIORNn A25 GND GNDB18 IOW* LIOWNn B25 D6 LD6A19 RESET* OPTRSTN A26 D5 LD5B19 NC NC B26 D4 LD4A20 D15 LD15 A27 D3 LD3B20 D14 LD14 B27 D2 LD2A21 GND GND A28 D1 LD1B21 D13 LD13 B28 D0 LD0A22 D12 LD12 A29 GND GNDB22 D11 LD11 B29 VCC (+5 V) VCCA23 D10 LD10 A30 VCC (+5 V) VCCB23 D9 LD9 B30 VCC (+5 V) VCC

n = 1 or 2

4-54FS-7000+/FS-9000

Parallel interface

The printer has a port for the parallel interface that is compatible with the current line-up ofthe Ecosys series printers. The parallel interface supports the protocols defined by the IEEE1284 standards. To gain conformity to these standards, the printer supports the ECP andnibble modes.Details on the signals on the parallel interface are described in the appropriate appendix inthis manual.

Serial interface

The FS-7000+/FS-9000 incorporates a port for the serial interface. The serial interfacecontroller is included within the gate array and supports both the RS-232C and RS-422Aprotocols. Since the RS-232C support is designed to be compatible with SNMP (SimpleNetwork Management Protocol), CTS and DSR signals are included. Switching to eithermode is toggled by changing a jumper wire arrangement on the controller board. A 25-pinD-sub connector is used for the serial port. The RS-422As extra signal lines are assignedto some of the vacant RS-232C terminals. (See Appendix A for the interface later in thismanual for details.)

The serial interface has the following features:Connector type: 25-pin, D-subBaud rates/sec.: 1200/2400/4800/9600/19200/38400/57600/115200Protocol: RS-232C/RS-422A (switchable)

4-55FS-7000+/FS-9000

Engine interface

The interface to the engine system is based on the serial interface. The serial-to-parallelconversion is executed on a hardware basis.The engine board is detachable from the printer at its interface connector. The engineinterface connector has the following pin assignments:

Engine interface connector assignment

Pin No. Signal Pin No. SignalB16 GND A9 NCA16 GND B8 CPRDYB15 GND A8 RESETINA15 VIDEO B7 ESIGIRB14 GND A7 CINHNA14 VDFON B6 SBSYNB13 OUTPEN A6 CBSYNA13 PRINTN B5 VCC

A5 VCCB12 PDN B4 VCCA12 VSYNCN A4 VCCB11 VSREQN B3 VCCA11 RDYN A3 SC

B2 GNDB10 FPCLK A2 SCLKA10 FPDIR B1 GNDB9 FPDATA A1 GND

4-56FS-7000+/FS-9000

Signals used for the engine interface

The following signals are used for the engine interface communication. Figure on next pageshows a simplified function diagram of the engine interface and the signals.

Signal Meaning Active DefinitionSBSYN Status-BuSY- Low

signal

CBSYN Command-BuSY- Lowsignal

SC Status-data/ Command-data

SCLK Serial CLocK

CINHN Command LowINHibit signal

Determines which direction for the enginesystem to transfer the status data. If SBSYN istrue, the controller is unable to transfer thecommand data towards the engine system. Thecontroller can read in the status data transferredfrom the engine system by forwarding SCLK tothe engine.

Determines which direction for the controllersystem to transfer the command data. If CBSYNis true, the controller can transfer the commanddata towards the engine system by forwardingSCLK to the engine system.

This is a bi-directional serial datum containingthe status data and command data as well asattributive information. The transfer datacommences with LSB, then to MSB.

The width of the clock pulse is approx. 1 sec(960 ns). SCLK is the clock delivered by thecontroller and used to synchronize the statusdata and command data with each other.

This signal inhibits the signal transmission. IfCINHN is low, the controller is not allowed toready the transmission data. This inhibit iscanceled when the engine controller reads inthe reception data.

4-57FS-7000+/FS-9000

Cont

rolle

rEn

gine

Com

man

dD

ata CL

K

int- CB

SYN

INTR

STAT

US

DAT

A

COM

MAN

D

DAT

A

INTR

int-

SBSY

N

STAT

US

DAT

A

S/C SC

LK

CBSY

NSB

SYN

CINH

N

Capt

ure

Sign

al

Capt

ure

Sign

al

1616 16

1616

16

1616

To S

tatu

s Re

gist

ers

(Tran

smit R

eady

)

Rec

eptio

n In

terru

pt C

lear

Sig

nal

Out

put

Buffe

r

Para

llel-

Seria

lCo

nver

sion

Switc

h

SCLK

Con

t.

Arbi

t.

Inpu

t

Buffe

r

Stat

us

Dat

a

Int.

Cont

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unt.

Cont

.

Para

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eria

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nver

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put

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us

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Engine interface signals

Documents

SM FS 7000 9000_4