SERVICEMANUALEPSONGT10000

EPSON

GT-10000

Color

Flat

Bed

Scanner

SESC99005

®

SERVICE MANUAL

SERVICE MANUAL

SERVICE MANUAL

Notice:

n

All

rights

reserved.

No

part

of

this

manual

may

be

reproduced,

stored

in

a

retrieval

system,

or

transmitted

in

any

form

or

by

any

means,

electronic,

mechanical,

photocopying,

recording,

or

otherwise,

without

the

prior

written

permission

of

SEIKO

EPSON

CORPORATION.

n

The

contents

of

this

manual

are

subject

to

change

without

notice.

n

All

effort

have

been

made

to

ensure

the

accuracy

of

the

contents

of

this

manual.

However,

should

any

errors

be

detected,

SEIKO

EPSON

would

greatly

appreciate

being

informed

of

them.

n

The

above

not

withstanding

SEIKO

EPSON

CORPORATION

can

assume

no

responsibility

for

any

errors

in

this

manual

or

the

consequences

thereof.

EPSON

is

a

registered

trademark

of

SEIKO

EPSON

CORPORATION.

General

Notice:

Other

product

names

used

herein

are

for

identification

purpose

only

and

may

be

trademarks

or

registered

trademarks

of

their

respective

owners.

EPSON

disclaims

any

and

all

rights

in

those

marks.

DANGER

Signals

a

precaution

which,

if

ignored,

could

result

in

serious

or

fatal

personal

injury.

Great

caution

should

be

exercised

in

performing

procedures

preceded

by

DANGER

Headings.

WARNING

Signals

a

precaution

which,

if

ignored,

could

result

in

damage

to

equipment.

The

precautionary

measures

itemized

below

should

always

be

observed

when

performing

repair/maintenance

procedures.

DANGER

1. ALWAYS

DISCONNECT

THE

PRODUCT

FROM

THE

POWER

SOURCE

AND

PERIPHERAL

DEVICES

PERFORMING

ANY

MAINTENANCE

OR

REPAIR

PROCEDURES.

2. NOWORK

SHOULD

BE

PERFORMED

ON

THE

UNIT

BY

PERSONS

UNFAMILIAR

WITH

BASIC

SAFETY

MEASURES

AS

DICTATED

FOR

ALL

ELECTRONICS

TECHNICIANS

IN

THEIR

LINE

OF

WORK.

3. WHEN

PERFORMING

TESTING

AS

DICTATED

WITHIN

THIS

MANUAL,

DO

NOT

CONNECT

THE

UNIT

TO

A

POWER

SOURCE

UNTIL

INSTRUCTED

TO

DO

SO.

WHEN

THE

POWER

SUPPLY

CABLE

MUST

BE

CONNECTED,

USE

EXTREME

CAUTION

IN

WORKING

ON

POWER

SUPPLY

AND

OTHER

ELECTRONIC

COMPONENTS.

WARNING

1. REPAIRS

ON

EPSON

PRODUCT

SHOULD

BE

PERFORMED

ONLY

BY

AN

EPSON

CERTIFIED

REPAIR

TECHNICIAN.

2. MAKE

CERTAIN

THAT

THE

SOURCE

VOLTAGES

IS

THE

SAME

AS

THE

RATED

VOLTAGE,

LISTED

ON

THE

SERIAL

NUMBER/RATING

PLATE.

IF

THE

EPSON

PRODUCT

HAS

A

PRIMARY

AC

RATING

DIFFERENT

FROM

AVAILABLE

POWER

SOURCE,

DO

NOT

CONNECT

IT

TO

THE

POWER

SOURCE.

3. ALWAYS

VERIFY

THAT

THE

EPSON

PRODUCT

HAS

BEEN

DISCONNECTED

FROM

THE

POWER

SOURCE

BEFORE

REMOVING

OR

REPLACING

PRINTED

CIRCUIT

BOARDS

AND/OR

INDIVIDUAL

CHIPS.

4. IN

ORDER

TO

PROTECT

SENSITIVE

MICROPROCESSORS

AND

CIRCUITRY,

USE

STATIC

DISCHARGE

EQUIPMENT,

SUCH

AS

ANTI-STATIC

WRIST

STRAPS,

WHEN

ACCESSING

INTERNAL

COMPONENTS.

5. REPLACE

MALFUNCTIONING

COMPONENTS

ONLY

WITH

THOSE

COMPONENTS

BY

THE

MANUFACTURE;

INTRODUCTION

OF

SECOND-SOURCE

ICs

OR

OTHER

NONAPPROVED

COMPONENTS

MAY

DAMAGE

THE

PRODUCT

AND

VOID

ANY

APPLICABLE

EPSON

WARRANTY.

PREFACE

This

manual

describes

basic

functions,

theory

of

electrical

and

mechanical

operations,

maintenance

and

repair

procedures

of

GT-10000.

The

instructions

and

procedures

included

herein

are

intended

for

the

experienced

repair

technicians,

and

attention

should

be

given

to

the

precautions

on

the

preceding

page.

The

chapters

are

organized

as

follows:

CHAPTER

1.

PRODUCT

OUTLINE

Provides

a general overview and specifications of the product.

CHAPTER

2.

OPERATING

PRINCIPLES

Describes

the theory of electrical and mechanical operations of the product.

CHAPTER

3.

TROUBLESHOOTING

Provides

the step-by-step procedures for troubleshooting.

CHAPTER

4.

DISASSEMBLY

&

ASSEMBLY

Describes

the step-by-step procedures for disassembling and assembling the

product.

CHAPTER

5.

ADJUSTMENTS

Provides

Epson-approved methods for adjustment.

CHAPTER

6.

MAINTENANCE

Provides

preventive maintenance procedures and the lists of Epson-approved

lubricants

and adhesives required for servicing the product.

CHAPTER

7.

APPENDIX

Provides

the following additional information for reference:

•

Connector Pin Assignment

•

Circuit Board Component Layout

•

Circuit Board Diagram

Revision IssuedDate Description A June14,1999 FirstRelease

B March30,2000

Revision:

1.Chapter5:TheconfirmingmethodofFirmwareVer.andLightValuehasbeenadded. 2.Chapter6:Thedescriptionofmaintenancehasbeenadded

EPSON

GT-10000

Revision

B

6

Table

of Contents

CHAPTER

1 PRODUCT OUTLINE

Overview...9

Specifications ...10

Basics...10

ImageHandlingSpecifications ...10

ElectricalSpecifications...11

Safety,EMC,EPA ...11

ResistancetoElectricNoise...11

EnvironmentalSpecifications ...11

Reliability ...11

OperatingConditions...11

OriginalDocumentCondition ...12

PhysicalDimensionsandWeight ...12

InterfaceSpecifications ...13

SCSIInterface ...13

BasicSpecifications ...13

Functions ...13

SCSIElectricalSpecifications ...13

Connectors ...13 Terminator ...13 SCSIIDSetting ...13 Commands ...14 Status ...15 DisplayMessages ...15

Connectorpinarrangement...16

IEEE1394SerialBusInterface*Option* ...16

ControlCode ...17

OperationSpecifications...18

ButtonsandSwitches...18

LEDSpecifications ...19

SwitchSetting...19

ErrorIndication ...20

AvailableScanArea ...20

TransportationScrew ...21

CHAPTER

2 OPERATING PRINCIPLES

GeneralDescription...23

MechanicalOperationoftheScanner ... 24

ElectricalCircuitOperations ...25

ControlCircuitOperation ...25

PowerSupplyCircuitOperation ...26

CHAPTER

3 TROUBLESHOOTING

Overview ...29

ErrorsandCausesofErrors ...29

Troubleshooting ...30

TestPoints ...30

TroubleshootingOtherErrors...30

TroubleshootingCircuitBoardErrors ...35

PowerSupplyBoard(B054PSHBoard)... 35

ControlCircuitBoard(B093MAINBoard)...35

CHAPTER

4 DISASSEMBLY & ASSEMBLY

Overview ...37

Tools ...37

Screws ... 38

DisassemblyProcedures ...40

DocumentCoverUnitRemoval... 41

ElectricalCircuitRemoval ...41

MainBoardsRemoval ...42

ScannerBodyDisassembly ...44

UpperHousingRemoval ...44

ScannerMechanismRemoval ...45

ScannerMechanismDisassembly ... 46

PanelBoardAssemblyRemoval ...46

SubBoardAssemblyRemoval...47

HPSensor(CR)Removal ...48

7

GlassFrameAssemblyRemoval ...49

LampAssemblyandInverterBoardAssemblyRemoval ...52

OptionFrameAssemblyRemoval...54

CHAPTER

5 ADJUSTMENTS

ConfirmingFirmware’sVersion ...56

InstallationofK90D13W...56

HowtouseK90D13W ...56

UpdatingFirmware ...58

PreparationsBeforeUpdating ...58

UpdatingFirmware ...59

LightCorrection ...63

LightValuesComfirmation ...63

NecessaryTools...63

LightCorrectionProcedure ...64

CHAPTER

6 MAINTENANCE

OVERVIEW ...67

Cleaning ...67

Lubrication...67

CHAPTER

7 APPENDIX

ConnectorPinAssignment ...69

ConnectorPinAssignment ...69

ConnectorSummary ...69

MainBoardCircuitSignals ...70

CircuitBoardComponentLayout ...74

CircuitDiagram...76

ExplodedDiagrams&ASPList ...78

ExplodedDiagrams ...78

C H A P T E R

1

PRODUCT

OUTLINE

Overview

9

1.1

Overview

TheEPSONGT-10000isanbusiness/officeA3sizeflat-bedtypecolorimage

scannerforusewithMicrosoft®Windows®.Themainfeaturesofthescanner

are:

o

Highresolution

Opticalresolutionis600dpi

12bitin,8bitout

o

Widereadablearea

ScansuptoA3sizeoriginals

o

High-speedscanning

A3portraitwithfullcolor=4mS/line

o

Option

AutoDocumentFeeder(sameasGT-12000)

o

Network-usesoftware

EPSONTWAINProNetwork

EPSONScanServer

o

Scan-Navigationbuttonsupport

ThescanbuttonisfunctionalwhenusingtheEPSONTWAINProNetwork

o

FastSCSIsupport

Upto10MB/Sinsynchronousdatatransfermode

o

InternationalEnergyStarcompliant

o

High-speedserialinterface(plannedoptionforWindows2000)

IEEE1394serialinterfacestandard

o

Quickoperation

Xenon-GasColdCathodeFluorescentLampdoesnotrequirewarm-up

EPSON

GT-10000

Revision

B

PRODUCT

OUTLINE

Specifications

10

1.2

Specifications

1.2.1

Basics

Type: Widearea,flat-bedcolorimagescanner

ScanningMethod: Sub-Scanningmirrormovementsystem

PhotoelectricDevice: ColorCCDLinesensor

LightSource: Xe-GasColdCathodeFluorescentLamp

Noiselevel: 50dBorlessduringoperation

Documentsize: UptoA3

Max.EffectivePixels: 7020x10200(600dpi)

Max.ScanArea: 297x432mm(11.7x17.0inches)

ScanningResolution: 600(Main)by1200(Sub)dpi

OutputResolution: 50to4800dpi(1dpiincrements)

Zoom: 50~200%(1%increments)

ScanningSpeed: Seethetablebelow.

Note:Figurestakenat600dpi

CommandCodes: ESC/ICommand(B7level)

FSCommand

Option: ADF(sameunitasGT-12000)

Interfaces: SCSI(50pinconnector)

IEEE1394serialinterface(optionforWindows2000)

1.2.2

Image

Handling

Specifications

GAMMA

CORRECTION

Fivestandardlevels,plusoneuserdefinable

CRTA&B PrinterA,B,&C

COLOR

CORRECTION

Fourstandardlevels,plusoneuserdefinable

DotMatrixPrinter

ThermalPrinter

InkJetPrinter

ColorMonitor(CRT)

BRIGHTNESS

CONTROL

Sevenlevels

IMAGE

PROCESSING

Twooutputmethods: Bi-level=Fixedthreshold

TET(TextEnhancementTechnology)

Half-toning: ErrordiffusionA,B,&C

DitheringA,B,C,&D

User-definedditheringA&B

Focusing: AAS(Auto-AreaSegmentation)

Table

1-1.

Scanning

Speed

Setting Timerequired

Monochromex2 Approx.1.4mS/line 256Grayscale Approx.4.0mS/line Fullcolor Approx.4.0mS/line

PRODUCT

OUTLINE

Specifications

11

1.2.3

Electrical

Specifications

Powersupplyvoltage: Universalpower

Ratedvoltage=AC100-120V(AC±10%)

Ratedvoltage=AC220-240V(AC±10%)

Ratedfrequencyrange: 50~60Hz(49.5-60.5Hz)

Powerconsumption: Approximately50W(withoutoption)

Approximately55W(withoption)

Insulationresistance: 10MΩormore(DC500VbetweenAClineand

chassis)

Dielectricstrength: AC1.2kVrms/minute(betweenAClineandchassis)

1.2.4

Safety,

EMC,

EPA

Safety: UL1950(UL)

CSAC22.2NO.950(CSA)

EN60950(VDE)

IEC950(ROSTEST,PSB)

EMC: FCCPart15SubpartBClassB

CSAC108.8ClassB

AS/NZS3548ClassB

CISPRPub22ClassB

CNS13438ClassB

CEMarking:

LowVoltageDirective73/23/EEC EN60950

EMCDirective89/336/EEC EN55022ClassB

EN61000-3-2 EN61000-3-3 EN50082-1 IEC 801-2 IEC 801-3 IEC 801-4

EPA: EnergyStarProgram

1.2.5

Resistance

to

Electric

Noise

StaticElectricity: Panel=10kV

Metallicparts=7kV(150pF/150Ω)

1.2.6

Environmental

Specifications

Temperature: Operating= 5to35°C

Whennotinuse=- -25to60°C

Humidity: Operating= 10to80%(nocondensation)

Storage= 10to85%(nocondensation)

1.2.7

Reliability

Mainunit: MCBF:carriage=100,000cycles

Hinge=25,000turns

1.2.8

Operating

Conditions

Dust: Ordinaryofficeorhomeconditions.

(Shouldbekeptawayfromextremedust.)

Illumination: Operationunderdirectsunlightornearstronglight

EPSON

GT-10000

Revision

B

PRODUCT

OUTLINE

Specifications

12

1.2.9

Original

Document

Condition

Reflectivetype: Smoothsurfacesuchasaprintingandphotograph.

1.2.10

Physical

Dimensions

and

Weight

Dimensions: 656(W)x458(D)x176mm(H)

(SeeFigure1-1.)

Weight: Approximately21Kg

Figure

1-1.

External

Dimensions

of

the

GT-10000

45 8m m 145 m m 176m m 656mm Scanbutton

PRODUCT

OUTLINE

Interface

Specifications

13

1.3

Interface

Specifications

ThisscannerisequippedwithtwostandardSCSIinterfaces.

1.3.1

SCSI

Interface

1.3.1.1

Basic

Specifications

TheSCSIinterfacespecificationsaredescribedbelow,anyitemsnotincluded

inthefollowingpagesareinconformancewithANSIX3T9.2/375Rrevision10L

(SCSI-2).

1.3.1.2

Functions

ThefollowingfunctionsareincludedinANSIX3T9.2/375Rrevision10L

(SCSI-2).

Table

1-2.

Functions

TheLevel1SCAMtargetfunctionisavailable.ThisisincludedinANSI

T10/1142Drevision15.

1.3.1.3

SCSI

Electrical

Specifications

ThisdeviceconformstoregulationsoftheSingle-endeddriversandreceivers

includedinANSIX3T9.2/375Rrevision10L(SCSI-2).

NOTE: Thelengthoftheinterfacecableislimitedtothreemeterswhen

usingFASTSCSI.(Synchronousdatatransfer)

1.3.1.4

Connectors

Two50-pinhigh-densityconnectors

1.3.1.5

Terminator

Internalterminator,setwiththeswitchontherearpanel

1.3.1.6

SCSI

ID

Setting

o

IDissetusingtherotaryswitchontherearpanel,from0to7.OtherID

numbersarereserved.SCSI-IDsettingswitch

Table

1-3.

ID

Setting

Phase/Condition Notes BUSFREE ARBITRATION SELECTION/RESELECTION COMMAND

• Inthissetup,LUN(logicalUnitNumber) isfixedat0

• Commandlinkfunctionisnotsupported DATAIN DATAOUT STATUS MESSAGEIN MESSAGEOUT ATTENTION(condition) RESET(condition) C H E C K P O I N T

BesuretosetthescannertoaSCSIIDnumberthatisnot alreadyinuse.

IDNumber Availability Note

0 Available NormallyassignedtootherSCSI

devicessuchasaharddiskdrive

1 Available NormallyassignedtootherSCSI

devicessuchasaharddiskdrive

2 Available Scannerdefaultsetting

EPSON

GT-10000

Revision

B

PRODUCT

OUTLINE

Interface

Specifications

14

Table

1-4.

Terminator

Switch

1.3.1.7

Commands

Thisprinterusesthefollowinggroup“0”processorcommands.

Table

1-5.

*1:SCSI-2sensedataformatavailable

*2:Theinquirydataisshowninthetablebelow.

Table

1-6.

4 Available

5 Available

6 Available

7 Available NormallyassignedtotheSCSIhost

adapter.

Blank NotAvailable Noteffective/Notused

Blank Available Usedforfirmwareupdates

Setting Note

ON Connectstotheterminalresistor./Factorydefaultsetting

OFF Disconnectsfromtheterminalresistor.

C H E C K P O I N T

Beawarethattheterminatorswitchmustbesetaccording tothescannerlocationonthedaisy-chain.

IDNumber Availability Note

Command Code Description

TestUnitReady 00h Confirmsoperation RequestSense 03h RequiresaSensedata*1

Receive 08h DatatransmissionfromTargetto Initiator

Send 0Ah DatatransmissionfromInitiatorto Target

Inquiry 12h RequestsinformationfromSCSI device*2

PeripheralQualifier 000b WhenanLUNotherthan#0isspecified, thisvalueissetin011b

PeripheralDevice

Type 03h

Processor

WhenanLUNotherthan#0isspecified, thisvalueissetin1fh

RMB 00h Non-removable

DevieType

Modifier 00h

ISOversion 00h ECMAversion 00h

ANSIversion 02h SCSI-2

AENC 0b Doesnotsupportasynchronousevent notification

PRODUCT

OUTLINE

Interface

Specifications

15

1.3.1.8

Status

Thestatusisdeterminedasfollows.

Note:R=reserved

1.3.1.9

Display

Messages

Table

1-8.

Message

Summary

TrmIOP 0b DoesnotsupportTerminateI/OProcess message

ResponseData

Format 02h

Additionallength 23h

RelAdr 0b Doesnotsupportrelativeaddressingfor thislogicalunit

Wbus32 0b Doesnotsupport32-bitwidedatatransfers Wbus16 0b Doesnotsupport16-bitwidedatatransfers Sync 1b Supportssynchronousdatatransfer Linked 0b Doesnotsupportlinkedcommandsforthis

logicalunit

CmdQue 0b Doesnotsupporttaggedcommand queuingforthislogicalunit SftRe 0b Hardresetalternative

VendorID “EPSON”, 20h,20h, 20h ProductID “Scanner”, 20h,“******”, 20h

Note::******=theproductname

ProductRevision “****” Note::******=theproductname VendorSpecific 00h,00h,

00h,ffh

Table

1-7.

Status

Conditions

Status bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0

GOOD R R 0 0 0 0 0 R

CHECKCONDITION R R 0 0 0 0 1 R

BUSY R R 0 0 1 0 0 R

Code Message Direction NegateATN

beforelastACK

00h Commandcomplete In

-01h (Extendedmessages)

02h SaveDataPointer In

-03h RestorePointer In

-04h Disconnect In

-05h InitiatorDetectedError Out Yes

06h Abort Out Yes

07h MessageRejection In/Out Yes

08h NoOperation Out Yes

09h MessageParityError Out Yes

0ch BusDeviceReset Out Yes

80h-ffh Identify In/Out No

In=TargettoInitiator Out=InitiatortoTarget

Yes=InitiatorshallnegateATNbeforelastACKofmessage

EPSON

GT-10000

Revision

B

PRODUCT

OUTLINE

Interface

Specifications

16

Table

1-9.

Extended

Message

1.3.1.10

Connector

pin

arrangement

Figure

1-2.

1.3.2

IEEE

1394

Serial

Bus

Interface

*Option*

FordetailsseetheseparateIEEE1394SerialBusInterfaceservicemanual.

Code ExtendedMessageName NegateATN

beforelastACK 01h SYNCHRONOUSDATATRANSFERREQUEST Yes

03h WIDEDATATRANSFERREQUEST Yes

Table

1-10.

SCSI

Connector

Functions

Signal In/Out PinNumber Description

GND 1~12,14~25,35~37,39,40, 42

NC 13

DB0 I/O 26 DataBus0

DB1 I/O 27 DataBus1

DB2 I/O 28 DataBus2

DB3 I/O 29 DataBus3

DB4 I/O 30 DataBus4

DB5 I/O 31 DataBus5

DB6 I/O 32 DataBus6

DB7 I/O 33 DataBus7

DBP I/O 34 DataBusParity

TERMPWR 38 TerminatorPower

ATN I 41 Attention

BSY I/O 43 Busy

ACK I 4 Acknowledge

RST I 45 Reset

25 1

50 26

MSG O 46 Message

SEL I/O 47 Select

C/D O 48 Command/Data

REQ O 49 Request

I/O O 50 Input/Output

Table

1-10.

(continued)

SCSI

Connector

Functions

PRODUCT

OUTLINE

Control

Code

17

1.4

Control

Code

ThecommandlevelforthisscannerisESC/I-B8.Thecommandssupported

areshowninthetablebelow.

Table

1-11.

Control

Code

Summary

Category Command Code

ExecuteCommand

IdentityRequest ESCI

StatusRequest ESCF

ExtendedStatusRequest ESCf ParameterRequest ESCS

InitiateScan ESCG

RequestPushButtonStatus ESC! RequestExtendedID FSI RequestScannerStatus FSF RequestScanParameters FSS InitiateNewScan FSG

SetDataFormat

SetDataFormat ESCDi SetResolution ESCRn1n2

SetZoom ESCHi1i2

SetScanArea ESCAn1n2n3n4

SetColor ESCCi

SetMirroring ESCKI SetScanParameter FSW

SetImageCorrection

SetBrightness ESCLi SetGammaCorrection ESCZi

DownloadGammaTable ESCzid0d1~d255 SetSharpness ESCQi

ImageProcessing

SetDigitalHalftoning ESCBi SetAutoAreaSegmentation ESCsi DownloadDitherPattern ESCbijd(j^2) SetColorCorrection ESCMi

DownloadColorCorrection ESCmd1d2~d9 SetThreshold ESCti

Miscellaneous

SetScanningMode ESCgi

Initialize ESC@

SetLineCounter ESCdi ControlOption ESCei

EjectPaper FF

FeedPaper PF

Control

NormalResponse ACK AbnormalResponse NACK

StopScanning CAN

Header STX

Table

1-11.

Control

Code

Summary

(continued)

EPSON

GT-10000

Revision

B

PRODUCT

OUTLINE

Operation

Specifications

18

1.5

Operation

Specifications

1.5.1

Buttons

and

Switches

Thisscannerisequippedwith4buttons/switches.Theirfunctionsare

describedbelow:

Figure

1-3.

Control

Panel

Indicators

and

Buttons

o

OPERATEbutton

Turnsonandoffthescanner. Whenturnedon,itinitializesthescanner.

o

RESET button

Re-initializesthescanner.

o

SCSIID(rotary)switch

SetstheSCSIdeviceIDforthisscannerwhentheSCSIinterfaceisused

toconnectthescannerwiththehostcomputer.

NOTE: Thefactorydefaultvalueforthisscanneris2.

Figure

1-4.

SCSI

ID

Switch

o

SCSI terminator

Determinestheinternalterminatorsettingbetween

ON-lastSCSIdeviceonthedaisychainand

OFF-notthelastSCSIdeviceonthedaisychain.

NOTE: ThefactorydefaultsettingforthisswitchisON(terminated).

PRODUCT

OUTLINE

Operation

Specifications

19

1.5.2

LED

Specifications

Thisscannerhasthefollowing3LEDindicators:

o

OPERATE indicator (Green)

Indicateswhetherthescannerisonoroff.

o

READYindicator(Green)

Onwhenthescannerisreadytoreceivecommands.Flasheswhendatais

sentto/fromthehostcomputer.

Whenanerroroccurs,indicatestheerrortypeincombinationwiththe

ERRORLEDindicator.

o

ERRORindicator(Red)

Onwhenanerroroccurs.

1.5.3

Switch

Setting

Amongtheswitchesequippedwiththisscanner,SCSIswitchandthe

terminatorswitch,whichareusedforSCSIinterface,havethefollowing

settings:

Table

1-12.

SCSI

ID

Setting

Table

1-13.

Terminator

Switch

IDNo. Availability Note

0 O NormallyassignedtootherSCSIdevicessuch asaharddiskdrive

1 O NormallyassignedtootherSCSIdevicessuch asaharddiskdrive

2 O Scannerdefaultsetting

3 O Reserve 4 O Reserve 5 O Reserve 6 O Reserve 7 O Reserve Blank X

Blank O Usedforfirmwareupdates

C H E C K

P O I N T Do not set the ID number that is already assigned to other SCSI device.

Setting Note

ON Connectstotheterminalresistor./Factorydefaultsetting. OFF Disconnectsfromtheterminalresistor.

C H E C K

P O I N T Be aware that the terminator switch must be set according to the scanner location on the “daisy-chain”.

EPSON

GT-10000

Revision

B

PRODUCT

OUTLINE

Operation

Specifications

20

1.5.4

Error

Indication

Ifanerroroccurs,determinetheerrortypereferringtothestatusoftheREADY

andERRORLEDindicators.

Note:SeeChapter3Troubleshootingfordetailsonsolvingtheerror.

1.5.5

Available

Scan

Area

Theoriginpointforthisscannerismarkedattherearleftcornerofthe

documenttablewhenviewedfromthefront.SeeFigure1-6forthemaximum

scanarea.

Figure

1-6.

Maximum

Scan

Area

Table

1-14.

Indicator

Status

and

Corresponding

Errors

READY ERROR ErrorType

On On Commanderror

Off Flashing Communicationerror

Flashing Flashing Fatalerror

Off Off Optionerror

Origin 297mm 2 ± 1.5mm 2 ± 1.5mm 432mm Front

PRODUCT

OUTLINE

Operation

Specifications

21

1.5.6

Transportation

Screw

Atransportationscrewisattachedtotheleftsideofthescannerviewedfrom

thefront.FasteningthescrewfixestheCRtoprotectthescannerfromthe

shockwhilethescanneristransportedormoved.Besuretoturnthescrewto

theunlockingposition(Describedinthefigurebelow.)beforeturningthe

scannerpoweron.

Figure

1-7.

Transportation

Screw

UNLOCK selectduring

normaluse LOCK

C H A P T E R

2

OPERATING

PRINCIPLES

General

Description

23

2.1

General

Description

TheEPSONGT-10000ismainlycomposedofthefollowingunits:

o

Scannermechanism

(Lampandmirrormechanismanddriveunit,lens-CCDsensorunitdrive

mechanism)

o

ControlCircuit

o

Powersupplycircuit

TheEPSONflat-bedtypescannersusuallyreadimagesbymovingtheintegral

CRunitwhichconsistsofthelamp,mirror,andlens-CCDsensor.This

scanner,however,characteristicallyhastheCCDsensorandthelensinthe

wholeunitattachedontothemechanismasanindependentunit.Thisscanner

isalsoequippedwiththenewlydesignedfocusingfunctionwhichenablesthe

scannertofocusbyadjustingthedistancebetweenthelensandtheCCD

sensor.Sincetheseparateunitsinthemechanismsuchasthelampandthe

mirrorsmoveattheirownspeedforreading,theincidentdistanceofthe

reflectedlightfromthedocumenttotheCCDsensoriskeptconstant.

Thecontrolcircuitboardandthepowersupplycircuitboardarestoredinthe

separateshieldcompartment.Sincetheonlyconnectionsfromtheboardslead

totheconnectorboardinthescannermechanism,theshieldcompartmentis

easytoremoveandthescanneriseasytomaintain.

Figure

2-1.

Main

Mechanism

Structure

of

GT-10000

B093PNL board Lens unit B0931SN board (CCD

Lamp/mirror unit Mirrorunit HP sensor _(mirror)

Motor (lamp/ mirror) Drive wires B093SUB _{CN4 CN5} CN6 B093SUB-B board AC in ADF interface SCSI ID switch Terminator switch SCSI interface B093MAIN board(control circuit) CN2 CN3 CN1 B054PSH board(power supply)

EPSON

GT-10000

Revision

B

OPERATING

PRINCIPLES

Mechanical

Operation

of

the

Scanner

24

2.2

Mechanical

Operation

of

the

Scanner

ComparedwithotherEPSONscanners,themainfeatureofthisscannerliesin

itsnewopticalmechanismusedforreadingimages.Insteadoftheunitedlamp

&CCDmovementsystemusedforotherscanners,thisscannerscanswiththe

fixedCCDsensorandseparatelampandthemirrorunits.

SincethecolorCCDlinesensorisusedforthereadingdevice,onlyonelight

sourceisequippedandlightisseparatedthroughtheRGBcolorfilter.

AsshowninFigure2-2,thelightsource(highluminancecoldcathodexenon

lamp),thefirstreflectionmirrorunit,andthesecondreflectionmirrorunitmove

independentlyattheirownspeed.Thereforethelengthoftheincidentlight

reflectedfromthedocumenttotheCCDsensoriskeptconstant.

TheverticaldistancebetweenthelampplusthemirrorintheLamp/mirrorunit

andthedocumentsurfaceremainconstant.Theverticaldistancebetweenthe

mirrorsintheMirrorunitalsoremainsconstant.However,thehorizontal

distancesbetweentheLamp/mirrorunit(rate=x2)andtheMirrorunit(rate=

x1)aswellasbetweentheMirrorunitandLensunitareconstantlychanging.

Thesteppingmotordrivesbothmovableunitsviawires.

TheCCDsensorandthelensareunitedintooneunit,whichissemi-fixedon

thebaseframe.TheonlydifferencefromGT-12000isthattheCCDlense

focusisfixed.

Figure

2-2.

Optical

Unit

Structure

Variable Fixed Fixed Variable Paper x1 x 2 Glass CCDsensor Lens unit Lamp/mirrorunit Mirrorunit

OPERATING

PRINCIPLES

Electrical

Circuit

Operations

25

2.3

Electrical

Circuit

Operations

ThissectiondescribestheelectricalcircuitryoftheGT-12000.

2.3.1

Control

Circuit

Operation

Thecontrolcircuitsofthisscannerare:

o

B093MAINboard(Maincontrolcircuitboard)

o

B093ISNboard(CCDsensorboardlocatedontheCR)

o

B054PSHboard

o

B093SUBboard(Relayboard)

o

B093SUB-Bboard(Copybuttoncontrol)

o

B054PNLboard(controlpanel)

AmongthevariousfunctionscontrolledbytheB093MAINboardaswellasthe

B093ISN,theseboardscontrolthescanningprocessfromtheCCDsensorsto

theimagesignalprocessingasdescribedbelow.

o

B093ISNBoard(CCDimagesensor)

n

Photoelectricconversion:

Convertslightreflectedfromthedocument(lightenergy)intoelectrical

energy(electricalcharge).

n

Amplification

n

A/Dconversion:

Convertstheimagedataproducedintheformofanalogelectrical

signalsinto12-bitdigitaldata.

o

B093MAINBoard(processesimagedata)

ASIC(IC10)onthisboardmanagesmostofthefollowingfunctions:

n

Shadingcorrection:

Performsimagedatacorrectiononablackandwhitebasis.

n

Processestheimagedataaccordingtovarioussettinginformation

providedbythehost,suchasgammacorrection,colorcorrection,and

halftoningcorrection.

Aftercompletingtheseprocesses,imagedataisoutputtothehost.

Figure

2-3.

Control

Circuit

Composition

Lamp Unit H.P. _MotorCR B093P NL Bo ar d B093MAIN Board B093SUB Board B093ISNBoard +5V,+15V ,+24V Motordrive (A3957SLB) IC4/5 Switch IDswitch SDRAM (16M*8bit) IC13 SRAM (256K*8bit) IC14 FlashROM (128K*16bit) IC7 SRAM (32K*8bit) IC8/9 CN3 CN2 CN1 IC12 CPU (HD6412350F20) IC16 (SPC7211) I/Fcontrol IC17 (BH9596) Trmntrctrl IC10T-Rex (E02A31EA) Image processing -Shedding -Gammacrrctn -Linecrrctn -Main/subave. -Colormatching -2/4sizing -TET -AAS LED x3 PW/RS SW CCD (ILS123K) IC7 AFE(VSP3000)

EPSON

GT-10000

Revision

B

OPERATING

PRINCIPLES

Electrical

Circuit

Operations

26

B093MAIN

BOARD

B093ISN

BOARD

B093SUB

BOARD

ThisrelayboardconnectstheB093MAINboard(whichislocatedonametal,

shieldedtray)withtheB093ISNandB054PNLboards.

B054PNL

BOARD

Thisboardhasapowerswitch(push-lock),RESETswitchandLEDindicators

(OPERATE,READY,ERROR).(SameboardusedinGT-12000;compatible.)

2.3.2

Power

Supply

Circuit

Operation

SincethepowersupplycircuitboardB054PSHforthisscannermeetsthe

universalspecificationrequirements,itcanbeusedwithratedvoltagefrom

100Vto240VAC.

TheelectricalcircuitfortheACinputpartisdesignedonthebasisof

200Vline.Incasetheinputvoltageis200Vlinelevel,theordinaryfullwave

rectifyingsystemisused.Withthissystem,thevoltageisrectifiedbythediode

bridgeDB1andthensmoothedbytheserialsmoothingcapacitorsC11and

C32toproduceapproximately250VDC.

Ontheotherhand,iftheinputvoltageis100Vlinelevel,thedouble-voltage

rectifyingsystemisusedinstead.Withthissystem,theinputACcurrentis

separatedintothefollowing2flows;thepositivehalfcyclesofthecurrentflow

throughthecontrolIC(IC2)(fromPin2toPin3)viathediodebridge(DB1)and

thesmoothingcapacitorC11,andthenegativehalfcyclesofthecurrentflow

throughthesmoothingcapacitor(C32)andDB1viaIC2(fromPin3toPin2).

Throughtheseflows,thepositiveandnegativeACcurrentareseparately

chargedinthesmoothingcapacitorsC11andC32,respectively. Thefinal

VDC(approximately250VDC)isequivalenttotheoutputvoltageproducedby

the200Vline.Atpower-on,thecontrolcircuit(IC2)isactivatedbythefullwave

rectifyingsystem.Then,iftheinputvoltageisthe100VDClinelevel,the

systemautomaticallyswitchestothedouble-voltagerectifyingsystemaftera

certainperiodsetbythecircuit.

Name Location Description

CPU

HD6412350F20 IC12

TheCPUthatcontrolsthisentireoperation ofthisboardandoperatesat20MHz. Voltage=5.0V ± 10%

T-REX

E02A31EA IC10

Theimageprocessorthatcontrolsthe functionsdescribedbelow,operatesat 48Mhz.Voltage=3.3V ±0.3V • CCDcontrol

• Linecorrectionprocessing • Buffermemory

• Imageprocessing

SPC7211 IC16 TheSCSIinterfaceprocessoroperatesat 40Mhz.Voltage=5.0V ±10%.

A3957SLB IC4/5 Motordrivecontrol

BH9596 IC17 Terminatorcontrol

Name Location Description

CCDsensor

ILX123K IC9

ColorCCDlinesensoroutline:

• Effectivepixel=7250pixelsx3colors • Lightshield=16pixelsx3colors • Bi-Dscanningrate=Max.6million

pixels/second • Shutterfunction ADC

VSP3000 IC2

A/DconverterprocessingIC Resolution=12bit

OPERATING

PRINCIPLES

Electrical

Circuit

Operations

27

Exceptforthefullwaverectifiercircuit/voltagedoublerrectifiercircuitattheAC

inputpart,thenormalRCC(RingingChokeConverter)regulatorcircuitisused

fortherestpartofthepowersupplycircuit,andthedifferentlevelsofVDCare

distributedtocorrespondingmechanisms,asshowninTable2-1:

Figure

2-4.

Double-voltage

Rectifier

Circuit

Operation

Table

2-1.

DC

Output

Power

OutputVDC Application

+5V Logicpowerlines

+24 V • Motordrivepowersource

• Powersourceforthelamp(inverter)

+15V

+12Vproduction

(Drivesthecoolingfanforthemetal,shieldedtraythatcontains theB093MAINandB054PSHboards.)

DB1 ACinput 100V=on 200V=off C11 C32 Voltage output Voltage input Positive Negative IC2

C H A P T E R

3

TROUBLESHOOTING

Overview

29

3.1

Overview

Thischapterdescribestroubleshootingtechniquestohelpyousolveany

scannerproblemsyoumayencounter.Firstseethenextsectiontodetermine

whatkindorerrorhasoccurred,andthenseetheappropriateexplanationin

thefollowingpagestodeterminethecorrectsolution.

3.1.1

Errors

and

Causes

of

Errors

Theself-diagnosticfunctionequippedwiththisscannerautomaticallydetects

theoperatingstatusofallmajorparts.Thescannercommunicatesany

detectederrorandthecauseoftheerrorusingacombinationoftheindicator

lightsasdescribedbelow.

COMMAND

ERROR

Table

3-1.

COMMUNICATION

ERROR

Table

3-2.

FATAL

ERROR

Table

3-3.

LEDStatus Cause Operation/Condition

Received undefined

commandorillegal parameter.

Ignoresthewrongcommand /parameter(nochangemadeto the current settings), and returnsNACKtowaitforthe nextcommand/parameter. Remedy Theerrorisclearedwhenalegalcommandor

parameterisreceived.

READY ERROR

LEDStatus Cause Operation/Condition

• Wrongcommunication procedureoroperation detected.

• ForSCSII/F,iftheerror occurredinanyphaseexcept “busfree”,communication andoperationsstopforover 30seconds.

Thelampgoesoffandthe scannerstopsoperating.

Remedy • TurnthescanneroffandbackonorpresstheRESETbutton. • ForSCSI,send“RESET”signal.

LEDStatus Cause Operation/Condition

Hardwareerror,suchas • Thelampdoesnotlight. • Scannerturnedonwiththe

CRunlocked.

• Otherdefectsinthescanner.

• Thelampgoesoffandthe scannerstopsoperating. • Setsthestatusbittobit

“7”.

Remedy

• Turnthescanneroffandbackonorpressthe“RESET” switch.

• Sendinitiliazecommand*ESC@”. • SendSCSI“busdevicereset” • ForSCSI,send“RESET”signal.

READY ERROR (flashing) READY ERROR (both flashing)

EPSON

GT-10000

Revision

B

TROUBLESHOOTING

Overview

30

OPTION

ERROR

Table

3-4.

3.1.2

Troubleshooting

Thissectionprovidestest pointsforeachmajorunitandcheckpointsforeach

abnormalphenomenon.

3.1.2.1

Test

Points

Testpointsforthemotorsandsensorsareshowninthetablesbelow.

MOTORS

Condition:Testthemotorwithoutanycablesconnected.

SENSORS

Condition:Testthesensorswiththepoweron.

3.1.2.2

Troubleshooting

Other

Errors

Seethetablebelowformiscellaneouserrorsnotcoveredintheprevious

sections.

LEDStatus Cause Operation/Condition

Optionerror,suchas

• Thescannercoverisopen. • Paperout

• Othersimilarerror

Setsthestatusbittobit“7”.

Remedy Solvetheerror.

C H E C K P O I N T

An

[Option

Error]

can

be

detected

only

when

the

option

is

properly

installed.

Table

3-5.

Motor

Check

Points

Motor TestPoint SignalLevel

Motor(fordriving themirror)

<Cableconnector> BetweenPins1and3 BetweenPins2and4

15.0Ω

ERROR READY

Table

3-6.

Sensor

Check

Points

Motor TestPoint SignalLevel

HPsensor(Mirror)

<B093SUBboard> CN4:Pin1(Signal) Pin2(GND)

• Highwhenthemirrorunitis inthehomeposition. • Lowwhenitisoutsideofits

homeposition.

C A U T I O N

Be

careful

not

to

short-circuit

the

signals

while

checking

them.

Table

3-7.

In

case

of

abnormal

performance

Phenomenon Description RefertoFlowchart

Thescannerdoesn’t operateatpoweron.

“OPERATE”LEDdoes

notlight. Figure3-1

“FatalError”isindicated anddoesnotclearafterthe scanneristurnedoffand backon

CRdoesnotmove. Figure3-1 Abnormalmovement

ofCR,suchas crashingintothe frame.

Figure3-3

Lampdoesnotlight. Figure3-4 “CommunicationError”is

indicated

SCSInotsetproperly

ordefective Figure3-5 Thescannerdoesnotscan

imagesproperly.

Blacklines,White

TROUBLESHOOTING

Overview

31

Flowchart

3-1.

COperate

light

does

not

light

up

Start Yes Connectproperly No CN1onB093SUB not grounded properly?

HasthefuseF1/F2 (B054SUB) blown? Yes Yes Yes No No No Disconnectcables from CN2/4/5/6 on B093SUB,andreplace thefuse.Thenturnon.

Disconnectcablesfrom CN2/4/5/6 on B093SUB, and then with power on test CN5 forthefollowingvoltages. Between Pins:

1and4:+24VDC 7 and 4: +5V DC 9 and 10: +15V DC

Aretheycorrect?

A

A Did the fuse burn

outagain? ReplaceB054PSH ReplaceB054PSH Yes Yes No No A

Checktheresistanceof themirrordrivemotor coil: 15.0Ω

Isitcorrect?

Replace B093MAIN

Checkthemotordriver IConB093MAIN. For Mirror motor resistancebetweenPin 15/22 of IC4/5 and GND = infinite Isitcorrect? Replace B093MAIN Replacethe motor

EPSON

GT-10000

Revision

B

TROUBLESHOOTING

Overview

32

Flowchart

3-2.

CR

(Mirror/lamp)

does

not

move

Transportation screw set to locked

position? Start

Yes

Unlock the screw No

Yes

No

No

Yes Turn off the scanner and

manually movethecarriage.

Doesitmovesmoothly?

The mechanism

isdefective.

Replace it

Withpoweron,testCN5on B093MAIN.

Between Pin 1 and 4: +24V DC

Isitcorrect? A Replace B054PSH Yes Yes No No A

Check the resistance ofthemirrormotor coil:15.0Ω Is it correct? Replace B093MAIN Replace B093MAIN Replacethe motor

Check the motor driver IConB093MAIN. Forthemirrormotor, resistance between Pin 15/22ofIC4/5andGND = infinite

TROUBLESHOOTING

Overview

33

Flowchart

3-3.

CR

moves

abnormally

(crashes

into

frame)

Flowchart

3-4.

Lampdoesnotlight Start Yes No No Yes Replace B093MAIN Transportation

screwsettolocked position?

Unlock the screw

Test CN4 on B093MAIN for the HP signallevel.

Is the signal “High” when CRisinhomeposition?

Replace the HP

sensor(formirror)

Start

Yes

Yes No

No Replace the lamp on the

carriage.

Does the lamp operate normally?

Old lamp was defective.

Replace the inverter board on the carriage.

Does the lamp operate normally?

Oldinverter

was defective.

Replace B093MAIN

EPSON

GT-10000

Revision

B

TROUBLESHOOTING

Overview

34

Flowchart

3-5.

SCSI

I/F

communication

error

occurs

Flowchart

3-6.

Scanned

image

is

abnormal

Start

MakesureonlythelastSCSI deviceinDaisyChainisterminated MakesuretherearenoSCSIID conflicts.

Are the settings correct? Yes Yes No No Setthem correctly.

TryanotherSCSIcable.

Doesthescanner operateproperly?

Oldcablewas

defective. Replace. Replace B093MAIN Start Yes No Yes No No

Yes _{Old B093MAIN}

wasdefective

Replacethe

mechansim Stainsorforeign

material on glass? Clean the glass

Cleanthe

mirror Stainsorforeign

material on mirror?

ReplaceB093MAINandperforma testscan.

Doesthescanner operatenormally?

TROUBLESHOOTING

Overview

35

3.1.3

Troubleshooting

Circuit

Board

Errors

Thissectiondescribesthecheckpointsfortheelectricalcircuitboards.

3.1.3.1

Power

Supply

Board

(B054PSH

Board)

3.1.3.2

Control

Circuit

Board

(B093MAIN

Board)

Table

3-8.

B054PSH

Board

Troubleshooting

Phenomenon CheckPoints

<Abnormalvoltage> +5VDCisnotoutput.

TestthesignalwaveformoutputbetweenPins8 and11(choppingwaveform)forIC51(TL494) <Abnormalvoltage>

+24VDCisnotoutput. TestthedrainwaveformattheSwitchingFET/Q1 <Abnormalvoltage>

+15VDCinnotoutput.

TestthesignalwaveformoutputfromPin1for IC52(78M15)

Table

3-9.

B093MAIN

Board

Troubleshooting

Phenomenon CheckPoints

<Nooperationatall> ResetICisdefective.

ChecktheresetIC(IC11)forthesignal waveformsoutputfromthefollowing pins:

Pin7(for+5Vinput) Pin5(forPWRSoutput)

<Nooperationatall> EPROMaccesserror

ChecktheCPU(IC12)fortheROM accesssignalwaveformsoutputfromthe followingpins:

Pin2(forCS0signal) Pin91(forRDsignal) <Nooperationatall>

CPUisdefective.

Checktheclocksignalwaveforminputto thefollowingpin:

Pin85(forXTALinput) <”FatalError”>

Motor(formirror)drivecircuitis defective.

ChecktheDriverIC(IC4/5)Phasedrive signalwaveformoutputfromPin15/22

<”FatalError”>

Carriagedoesnotstopatthehome position.

CheckifthesignalwaveforminputtoPin 110oftheCPU(IC12)changesin accordancewiththeCRposition. <”FatalError”>

Lampdoesnotlight.

ChecktheoutputfromPin95ofASIC (IC12)

<”FatalError”>

Whitestandardlevelisnotread properly.

Checkthesignaloutputwaveformfor ASIC(IC12)Pin202:

<”CommunicationError”> Bi-directionalI/FandSCSII/F

Maincause:ASIC(IC16)isdefective. (ReplaceIC16orB093MAINboard.) <Imageisreadabnormally> Maincause:ASIC(IC10)isdefective.

(ReplaceIC10orB093MAINboard.)

Table

3-9.

B093MAIN

Board

Troubleshooting

(continued)

C H A P T E R

4

DISASSEMBLY

&

ASSEMBLY

Overview

37

4.1

Overview

Thischapterdescribeshowtodisassemblethisscanner.Unlessotherwise

specified,assemblycanbeaccomplishedbyfollowingdisassemblyprocedures

inreverseorder.

4.1.1

Tools

Toolsusedforservicingareaslistedinthetablebelow:

¤ Commerciallyavailable.

¢ Notcommerciallyavailable.

W A R N I N G

n

_socketBesure_priortodisconnect_toservicing.thepowercablefromtheACpower

n

Since this scanner weighs heavy (approximately 20 kg), it

must be carried by two people.

C A U T I O N

n

Never_doso,disassemble_becausethisany_scannerscanner_mechanismpartsunless_needsspecified_preciseto

assemblyandadjustmenttomaintainaccuratecontrol systematitssatisfactorylevel.

n

Secureyourselfenoughroomforservicing,considering thesizeofthescanner.

n

Sincethisscannerweighsasheavyasapproximately20 kg,besuretoperformservicingonaheavy-duty,level table.

n

Make sure that the “CR fixing knob” is set to the locking position to fix the CR by the rear before packing the scanner for transportation.

Table

4-1.

Tool

List

Description Availability SEPartsCode Reference

(+)ScrewDriver(No.2)

¤

- Versatile

(+)ScrewDriver(No.1)

¤

- ditto

BoxDriver(Diagonal:6mm)

¤

- ditto

BoxDriver(Diagonal:5mm)

¤

- ditto

Tweezers

¤

- ditto

LevelingTools(3stagesand1

adjusteras1set) ¢ 1039140

Sameas GT-12000

MechanismLiftHandle ¢ 1040176 ditto

LightCorrectingPanel ¢ 1050003

Exclusively designedfor

GT-10000.

WhiteStandardChart ¢ 1050004

Exclusively designedfor GT-10000. (Mustbeattached totheLight CorrectingPanel beforeuse.)

GT-10000

Revision

B

DISASSEMBLY

&

ASSEMBLY

Overview

38

4.1.2

Screws

Screwsusedinthisscannerarelistedinthetablebelow. However,thelist

doesnotincludethescrewswhichareusedforservicingnotspecifiedinthis

manual. Besuretousethecorrecttypesandnumbersofscrewsforeachpart

whenassemblingthescanner.

Table

4-2.

Screw

List

No. ScrewType/

Specification Appearance Color

1 CPFSM3x8 Black

2 CBM3x6 Gold

3 CPM2.5x8 Silver

4 ScrewLockScrew

(Diagonal:5mm) Silver

5 Brass Spacer (Hexagon)

(Diagonal:6mm) Silver

6 CPSM4x12 Silver

7 CBM4x10 Gold

8 CPSM4x18 Gold

9 CR;BDamperShaft Gold

10 CBM3x3 Gold

Table

4-2.

Screw

List

(continued)

No. ScrewType/

DISASSEMBLY

&

ASSEMBLY

Overview

39

11 CBM3x12 Black

12 CBM4x6 Gold

13 CPFSM3x8 Gold

Table

4-2.

Screw

List

(continued)

No. ScrewType/

GT-10000

Revision

B

DISASSEMBLY

&

ASSEMBLY

Disassembly

Procedures

40

4.2

Disassembly

Procedures

Thissectiondescribesdisassemblingandremovingproceduresforeachmajor

unitofthescanner.

SeetheflowchartinFigure4-1.Thejobsintheyellowboxinvolveuseofthe

adjustingtoolsexclusivelydesignedforthisscanner.Therefore,makesurethat

youreadtheinstructionsineachsectioncarefullytofigureouttheprocedures

beforeservicing.

Figure

4-1.

Disassembly

Procedure

for

GT-10000

ElectricalCircuit Removal (Section4.2.2) ScannerBody Disassembly (Section4.2.3) ScannerMechanism Disassembly (Section4.2.4) DocumentCover Removal (Section4.2.1)

MainBoardsRemoval (Section4.2.2.1)

UpperHousingRemoval (Section4.2.3.1) MechanismRemoval

(Section4.2.3.2)

PanelBoardAssemblyRemoval (Section4.2.4.1)

SubBoardAssemblyRemoval (Section4.2.4.2)

HPSensor(CR)Removal (Section4.2.4.3)

Motor(CR)AssemblyRemoval (Section4.2.4.4)

GlassFrameAssemblyRemoval (Section4.2.4.5)

OptionFrameAssemblyRemoval (Section4.2.4.7)

Lamp/InverterBoardAssembly Removal(Section4.2.4.6)

DISASSEMBLY

&

ASSEMBLY

Disassembly

Procedures

41

4.2.1

Document

Cover

Unit

Removal

Figure

4-2.

Document

Cover

Unit

Removal

4.2.2

Electrical

Circuit

Removal

Themajorelectricalcircuitboards(B093MAINandB054PSH)ofthisscanner

areallstoredinoneindependentshieldcompartment.Therefore,theycanbe

removedinoneunit(boardunit)fromthescannerwithease.

1. DisconnecttheACpowercablefromthescanner.

2. Remove3screws(No.1)securingtheshieldcompartmentwhichcontains

theelectricalcircuitboardsatthebackofthescanner.Thentakeoutthe

compartmentfromthescanner.

Figure

4-3.

Shield

Compartment

Removal

C H E C K P O I N T

Foreasyremoval,pullthetranslucentcardspacerslocated atbothsidesoftheshieldcompartment.

GT-10000

Revision

B

DISASSEMBLY

&

ASSEMBLY

Disassembly

Procedures

42

4.2.2.1

Main

Boards

Removal

Mainboardsstoredintheshieldcompartmentshouldberemovedinthe

followingprocedure:

1. Removetheshieldcompartment.(See4.2.2.)

2. Remove18screws(No.2)securingthetopshieldandthetopshieldcover,

andremovebothunitstogether.

Figure

4-4.

Removal

of

Top

Shield

and

Shield

Cover

3. MainBoardAssemblyRemoval

DisconnecttheconnectorcablesfromconnectorsCN5andCN7onthemain

boardassembly.

4. Removethefollowingscrewssecuringthemainboardassembly,anda

brassspacersecuringthetopshield,andremovethemainboard:

n

6screws:No.2,securingtheboardalongtheedges.

n

6screws:No.3=4screwssecuringtheSCSIII/Fconnector;No.4=2

DISASSEMBLY

&

ASSEMBLY

Disassembly

Procedures

43

Figure

4-5.

Main

Board

Assembly

Removal

(a)

Figure

4-6.

Main

Board

Assembly

Removal

(b)

5. PowerSupplyBoardAssemblyRemoval

n

RemovetheconnectorcablesfromconnectorCN1onthepower

supplyboardassemblyandconnectorCN5onthemainboard

assembly.

6. Remove6screws(No.2)securingthepowersupplyboardassemblyand

removethepowersupplyboard.

Figure

4-7.

Power

Supply

Board

Assembly

Removal

Connector CN7

ConnectorCN5

FixingScrews(No.2)

BrassSpacer(Hexagon)

SCSI I/F Fixing Screws ADF_{Fixing Screws}OptionI/F

Power Supply Board Fixing Screws(No.2)

PowerSupplyConnectorCN1

Main Board ConnectorCN5

GT-10000

Revision

B

DISASSEMBLY

&

ASSEMBLY

Disassembly

Procedures

44

4.2.3

Scanner

Body

Disassembly

Thissectiondescribesproceduresfordisassemblingthemajorunitsofthe

scanner.

4.2.3.1

Upper

Housing

Removal

1. Removethedocumentcover(SeeFigure4.2).

2. Usingtweezers,removetheCRfixingknobattachedtotheleftsideofthe

scanner.

3. Remove4screws(2foreachofNo.6andNo.7)securingtheupper

housingtothechassisonthescanner. Notethatthe2frontscrewsare

coveredwiththescrewcaps. Pinchthemoutwithtweezerspriorto

removingthescrews.

4. Liftuptheupperhousingtoremoveit.

Figure

4-8.

Upper

Housing

Removal

Figure

4-9.

Screw

Caps

Removal

C A U T I O N WhenremovingtheCRfixingknoborscrewcaps,take cautionsnottodamagetheupperhousing.

C H E C K P O I N T

Whenreinstallingtheupperhousing,makesurethatthe opticalplateisinstalledonthespecifiedposition.

6

Screw (No.6) CRFixingKnob Screw (No.7) Screw Cap ScrewCap

Removethecapbyliftingitup whilepushingittowardtheother sideofthecutout.

Becarefulnottodamage theupperhousing. Cross-section

DISASSEMBLY

&

ASSEMBLY

Disassembly

Procedures

45

Figure

4-10.

Optical

Plate

Installation

4.2.3.2

Scanner

Mechanism

Removal

Thescannermechanismcanberemovedfromthelowerhousinginthe

followingprocedure:

1. Removetheupperhousing(See4.2.3.1).

2. Remove4screws(No.8)securingthescannermechanismtothelower

housing. Thenremovethemechanismfromthelowerhousing.

OpticalPlate

Inner Side of the UpperHousing

C H E C K

P O I N T

n

Note the following when installing the scanner mechanism:Removekeytopsforthepowerswitchandreset switchesfromthelowerhousing.

n

Install the scanner mechanism to the lower housing.

n

Reinstallthekeytops.