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Canon QY8-1360-000 5-50, BJC-7100, Part 5 Maintenance, Logic Board, Motor Drivers & Sensors, IC13

Models: QY8-1360-000

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MOTOR DRIVERS & SENSORS

BJC-7100

Part 5: Maintenance

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																					LOGIC BOARD 04
	MOTOR DRIVERS & SENSORS																				LOGIC BOARD 04
	MOTOR DRIVERS & SENSORS
																			+5V
																			+5V

VDDM

R215

SPOWON

220,1/8W

R18

<03-A5>

HPLED

<01-B1>

10K,1/16W

+5V

TR15

C61

DTA143EKA

R216

R213

R19

4700p,50V

220,1/8W

22K,1/16W

10K,1/16W

CARRIAGE

R17 2.7K,

C69

C68

ASFS

<01-E2>

R23

VDDM

0.5%,1/16W

0.01μ,50V

0.01μ,50V

MOTOR DRIVER

C56

1,1/4W

PS1

R24

IC13

100p,50V

TLP832

1,1/4W

R33

R27 30K,

R26

R251

R13

1

VsA

2

10K,1/16W

0.5%,1/16W

3.3K,1/16W

3.3K,1/16W

CRPWMA

<02-G1>

IP1

1,1/4W

3

VrefA

<02-B7>

CRPA

5

ALARM

CR

4

ICP-N38

PICK-UP ROLLER

<01-D2>

PhaseA

6

CRAENA

<01-D2>

R20

7

LGA

ENAA

8

SENSOR

9

VmmA

VM

1,1/4W

11

N.C.

Out1

10

C73

+5V

R21

13

RsA

Out2

12

+5V

PG

14

220μ,35V

1,1/4W

15

N.C.

Out3

16

R217

R214

R14

17

RsB

N.C.

18

R32

220,1/8W

22K,1/16W

19

Out4

1,1/4W

VDDM

21

N.C.

VmmB

20

+5V

10K,1/16W

<01-D2>

CRPB

23

LGB

ENAB

22

CRBENA

<01-D2>

PES

<01-E2>

25

PhaseB

Decay

24

Vcc

26

CRPWMB

<02-B7>

27

VsB

VrefB

R29 30K,

R28

R253

PS2

C57

100p,50V

R300

0.5%,1/16W 3.3K,1/16W

3.3K,1/16W

GP1SQ59C

C60

MTD2005B

C76

ZD31

10K,

0.1μ,25V

0.1μ,50V

1/4W

PTZ36A

R15 2.7K,

C71

C70

PAPER END

0.5%,1/16W

0.01μ,50V

0.01μ,50V

SENSOR

CNPGS

R7

CNCR

220,1/8W

LEDON

1

FB27

BK1608LM252

+5V

1

CRA

C54

2

CRB

Approx.8.3Ω/

GND

2

FB28

0.01μ,50V

3

CRB

phase

BK1608HS601

R211

22K,1/16W

4

CRA

PGS

3

FB29

PGS

C77

<01-E2>

BK1608LM252

0.1μ,50V

B48-PH-K-5

CARRIAGE MOTOR

PURGE SENSOR

175487-3

C16

100p,50V

+5V

R135

SW1

22K,1/16W

<02-E1,01-E2>

POWSW

1

2

C33

3

4

POWER

0.01μ,50V

SKHVLH

+5V

PAPER FEED

R136

MOTOR DRIVER

VCC

SW2

ERRSW

22K,1/16W

1

2

IC14

<01-E2>

C34

3

4

RESUME

1

30

R238 1.5K,

C74

C75

0.01μ,50V

BUTTONS

VmmA

GND

R46

R43

R44

0.5%,1/16W

0.01μ,50V

0.01μ,50V

SKHVLH

2

N.C.

GND

29

10K,1/16W

10K,1/16W

10K,1/16W

R37

3

Out1

LGA

28

+5V

1,1/4W

4

N.C.

ENAA

27

LFIA0

<01-D2>

5

RsA

PHAA

26

LFPA

<01-D2>

6

N.C.

CR

25

R137

R38

7

Out2

ALARM

24

IP0

<02-G1>

22K,1/16W

1,1/4W

8

Out3

VrefA

23

LFPWMA

<01-B1>

<01-E2>

COVER

9

N.C.

VsA

22

VDDM

C72

VDDM

R241 16K,

R242

R252

C35

SW3

CARTRIDGE

10

RsB

VsB

21

4700p,50V

0.5%,1/16W 3.3K,1/16W

3.3K,1/16W

0.01μ,50V

1

2

11

20

R39

12

N.C.

VrefB

19

3

4

1,1/4W

13

Out4

Vcc

18

14

N.C.

DECRY

17

LFPB

SKHVLH

VmmB

PHAB

<01-D2>

R40

15

LGB

ENAB

16

LFIA1

<01-D2>

1,1/4W

C78

MTD2005FB

R45

0.1μ,25V

CNLF

POW1

+5V

10K,1/16W

R10

SEC2552C

<02-B7>

LED0

150,1/8W

3

K

A

2

1

LFA

Approx.6.0Ω/

<02-B7>

K

A

POWER

2

LFB

LED1

1

4

3

LFB

phase

R9

INDICATORS

4

LFA

150,1/8W

175487-4

<02-B7>

LED2

ERROR

PAPER FEED

R8

ERR1

MOTOR

220,1/8W

SEC1901C

All resistance tolerances which are not marked with "%" are 5%.

A

B

C

D

E

F

G

5-50

Image 182

Canon QY8-1360-000 5-50, BJC-7100, Part 5 Maintenance, Logic Board, Motor Drivers & Sensors, IC13, Paper End, Purge Sensor

Contents

OCT. 1998QY8-1360-000 REVISION1098 AB Page 16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki, Kanagawa 213, Japan Copyright 1998 by Canon Inc CANON INCBJ Products Quality Support Dept Target ReadersPart 5 Maintenance Part 1 Safety and PrecautionsPart 2 Product Specifications I. ABOUT THIS MANUALPart 2 PRODUCT SPECIFICATIONS II. TABLE OF CONTENTSPart 1 SAFETY AND PRECAUTIONS Part 3 OPERATING INSTRUCTIONS Part 4 TECHNICAL REFERENCEPart 5 MAINTENANCE Page Part 1 SAFETY AND PRECAUTIONS Part 2 PRODUCT SPECIFICATIONSIII. ILLUSTRATION INDEX Part 3 OPERATING INSTRUCTIONSPart 5 MAINTENANCE Part 4 TECHNICAL REFERENCEVIII PagePart 5 MAINTENANCE IV. TABLE INDEXPart 2 PRODUCT SPECIFICATIONS Part 3 OPERATING INSTRUCTIONSPage SAFETY AND PRECAUTIONS PartPage 1.1 Moving Parts 1. SAFETY PRECAUTIONSBJC-7100 Figure 1-1 The Printers Moving PartsBJC-7100 1.2 Front CoverFigure 1-2 Front Cover Part 1 Safety and PrecautionsPart 1 Safety and Precautions 1.3 Ink Stains 1.3.1 Ink pathFigure 1-3 Ink Path BJC-7100Figure 1-4 BC-62e Photo and BC-61 BC-62e PhotoBC-61 1.3.2 Ink mistPart 1 Safety and Precautions 1.4 Live PartsFigure 1-6 AC Adapter BJC-7100Part 1 Safety and Precautions 1.5 BJ Cartridge Metal PlateFigure 1-7 BJ Cartridge Metal Plate 1. Overheat detection when replacing cartridgeFigure 1-8 Removing the BJ Cartridge Cap and Tape 2. MACHINE PRECAUTIONS2.1 BJ Cartridge Handling 2.1.1 Unpacking the BJ cartridge 2.1.2 BJ cartridge protectionFigure 1-9 BJ Cartridges 2.1.3 Power on/off2.1.4 When not using the printer Part 1 Safety and PrecautionsFigure 1-10 Removing the Ink Tank Cap 2.1.5 Ink electroconductivity2.2 Ink Tank Handling 2.2.1 Unpacking the ink tank 2.2.2 Preventing clogging2.3.2 Damage due to static electricity 2.3 Printer Handling 2.3.1 SpursFigure 1-12 Spurs Figure 1-13 Contacts2.3.4 Carrying the printer 2.3.3 Ink leakage and dry-outFigure 1-14 Capping Position Figure 1-15 Carrying the Printer1-12 3. NOTES ON SERVICING3.1 EEPROM Data Part 1 Safety and PrecautionsFigure 1-16 Protecting the Power Supply 3.2 Service Mode of Printer Driver3.3 Protecting the Power Supply 1-13Figure 1-17 Electrical System of Printer 3.4 Static ElectricityStatic Damage 1-143.6 Self-Diagnosis 3.5 Disassembly and Assembly 3.5.1 Parts that cannot be disassembledFigure 1-18 Parts that Cannot be Disassembled 1-15Part 1 Safety and Precautions This page intentionally left blank1-16 BJC-7100PRODUCT SPECIFICATIONS PartPage Figure 2-1 Printer Appearance 1. PRODUCT OUTLINE1.1 Outline Part 2 Product SpecificationsBJC-7100 1.2 FeaturesPart 2 Product Specifications Part 2 Product Specifications 1.3 BJ Cartridge 1.3.1 Black BJ cartridge BC-60Figure 2-2 Black BJ Cartridge BC-60 BJC-7100Part 2 Product Specifications 1.3.2 Photo BJ cartridge BC-62e PhotoFigure 2-3 Photo BJ Cartridge BC-62e Photo BJC-71001.3.4 BJ cartridge vs print mode 1.3.3 Color BJ cartridge BC-61Figure 2-4 Color BJ Cartridge BC-61 TABLE 2-1 BJ CARTRIDGE VS PRINT MODE1.5 Consumables 1.5.1 BJ cartridge 1.4 SB-60 BJ Cartridge ContainerFigure 2-5 BJ Cartridge SB-60 1.5.2 Ink tankPart 2 Product Specifications 2. SPECIFICATIONS2.1 General Specifications 2. Operating mode Canon extended mode 3. Print resolution13. Paper Feeding method Part 2 Product SpecificationsBJC-7100 14. Sheet feeder capacity20. Power consumption BJC-7100Part 2 Product Specifications 21. External dimensions2-10 2.2 Paper Specifications 2.2.1 Paper typesTABLE 2-2 PAPER SPECIFICATIONS Part 2 Product Specifications2-11 2.2.2 Printing rangeFigure 2-7 Printing Area Part 2 Product Specifications2-12 2.3 Interface SpecificationsTABLE 2-3 IO SIGNALS IN COMPATIBLE MODE Part 2 Product Specifications2-13 TABLE 2-4 IO SIGNALS IN NIBBLE MODETABLE 2-5 IO SIGNALS IN ECP MODE Part 2 Product Specifications7 Description of input/output signals Compatible Mode 2-14Part 2 Product Specifications BJC-7100Fault Output 2-15Part 2 Product Specifications BJC-7100BJC-7100 2-16Part 2 Product Specifications Host Busy InputBJC-7100 2-17Part 2 Product Specifications Ack Reverse OutputFigure 2-10 ECP Mode Figure 2-8 Compatible ModeFigure 2-9 Nibble Mode 2-18OPERATING INSTRUCTIONS PartPage Figure 3-1 Packaging 1. PRINTER SETUP1.1 Unpacking BJC-7100Part 3 Operating Instructions 1.2 Installation LocationFigure 3-2 Printer Dimensions BJC-7100Figure 3-3 Connecting the Interface Cable 1.3 Installation1.3.1 Connecting the interface cable 1.3.2 Connecting the power supplyFigure 3-5 Removing Cap and Tape from BJ Cartridge 1.3.3 Installing the BJ cartridgeFigure 3-6 Installing BJ Cartridges 2 Installing the BJ cartridgePart 3 Operating Instructions Figure 3-7 Checking Print Head AlignmentBJC-7100 3 Aligning the print headsFigure 3-9 Removing Protective Cap from Ink Tank 1.3.4 Replacing the ink tanksFigure 3-8 Replacing the Ink Tank 1 When to replace the ink tankBJC-7100 1.3.5 Cartridge container SB-60Figure 3-10 Cartridge Container SB-60 Part 3 Operating InstructionsFigure 3-11 Incorrect Method of Powering Off 1.4 Turning Printer Power On and Off 1.4.1 Turning the power on1.4.2 Turning the power off Part 3 Operating Instructions1.5 Loading Printer Paper TABLE 3-1 PRINTER PAPER SETTINGSFigure 3-12 Paper Settings BJC-7100OPERATOR PANEL 1.6 Names of Parts and Their FunctionsFRONT Figure 3-13 Names of Parts and Their FunctionsFigure 3-14 Names of Parts and Their Functions INSIDEBACK 3-11Figure 3-15 Transporting the Printer 2. TRANSPORTING THE PRINTER2.1 Transporting the Printer 3-123-13 2.2 Manual CappingFigure 3-16 Manual Capping Method BJC-71003. PRINTER SERVICING FUNCTIONS 3.1 Error Indications3.1.1 Operator call errors Figure 3-17 Control Panel3-15 3.1.2 Service callsTABLE 3-3 SERVICE CALLS If a service call occurs, refer to Part 5 6. TROUBLESHOOTING pagePart 3 Operating Instructions 3.2 Warning Indications3-16 BJC-7100Figure 3-18 Windows 95 Driver Control Sheet Sample 3.3 Function Settings3.3.1 Items set by control function 3-173-18 3.3.2 Service mode of printer driverFigure 3-19 Hidden Control Sheet Sample Procedure3-19 3.5 Cleaning the BJ Cartridge3.4 EEPROM Manual Print Head CleaningFigure 3-20 Nozzle Check Pattern Sample 3.7 Pickup Roller Cleaning Function HR-1013.6 Test Printout 3-203-21 3.8 Service ModeTABLE 3-4 SERVICE MODE BJC-71003.8.1 Final factory test pattern Figure 3-21 Service Mode Test Print Sample3.8.2 Resetting EEPROM data 3-22Figure 3-22 EEPROM Data Print Sample 3.8.4 Setting destination country3.8.3 Printing EEPROM data 3-23Part 3 Operating Instructions 3.8.5 Other Function3-24 BJC-7100TECHNICAL REFERENCE PartPage 1. OVERVIEW 1.1 Printer Block DiagramFigure 4-1 Printer Block Diagram BJC-7100Part 4 Technical Reference 1.2 Initial FlowchartFigure 4-2 Flowchart of Initialization Sequence BJC-7100BJC-7100 1.3 Print Signal SequenceFigure 4-3 Print Signal Sequence Part 4 Technical ReferencePart 4 Technical Reference 1.4 BJ Cartridge Drive1.4.1 Print drive control BJC-7100BJC-7100 1.5 Power-Off Sequence FlowchartFigure 4-4 Power-Off Sequence Flowchart Part 4 Technical Reference2.1 Interface Figure 4-5 Bidirectional Centronics Specifications Selection Sequence2. FIRMWARE 2.1.1 Compatible mode2.1.3 ECP mode 2.1.2 Nibble modeFigure 4-7 Interface Timing Nibble Mode Figure 4-8 Interface Timing ECP ModePart 4 Technical Reference 2.2 Print ModesTABLE 4-1 NUMBER OF PASSES VS NUMBER OF OPERATIONAL HEAD NOZZLES BJC-71002.2.3 Standard mode 2.2.1 Plain paper optimized printing mode P-POP2.2.2 Economy print mode Draft mode 2.2.4 High quality and fine modeFigure 4-10 Print Mode Main Sheet Sample 2.2.5 Print mode settingsTABLE 4-2 MAIN DEFAULT PRINT MODE SETTINGS 4-102.3 Smoothing Function 2.4 Print Optimization Controls 2.4.1 Power monitorFigure 4-11 Print Mode Detail Quality Sheet Sample 2.4.2 Head sticking preventionPart 4 Technical Reference 2.5 Head Overheat Protection4-12 BJC-7100Figure 4-12 Printers Mechanical System 3. PRINTERS MECHANICAL SYSTEM3.1 Overview 4-13Part 4 Technical Reference 3.1.1 Structure of printers mechanical system4-14 BJC-71004-15 3.2 BJ Cartridge 3.2.1 BJ cartridge structureFigure 4-13 Structure of BC-60 BJC-7100Part 4 Technical Reference Figure 4-14 Structure of BC-614-16 BJC-7100BJC-7100 Figure 4-15 Structure of BC-62e Photo4-17 Part 4 Technical ReferenceBJC-7100 4-18Part 4 Technical Reference Air paths/Tank labelFigure 4-17 Structure of BC-61 BJ Head Unit 3.2.2 Structure of BJ head unitFigure 4-16 Structure of BC-60 BJ Head Unit 4-19Part 4 Technical Reference Figure 4-18 Structure of BC-62e Photo BJ Head Unit4-20 BJC-71004-21 3.2.3 Nozzle arraysFigure 4-19 Nozzle Arrays BJC-7100TABLE 4-3 BJ HEAD INPUT AND OUTPUT SIGNALS 3.2.4 Signal contactsFigure 4-20 Signal Contacts 4-22Part 4 Technical Reference 4-23BJC-7100 4-24 Figure 4-21 Block Diagram of BC-60 Drive Circuit3.2.5 Drive circuit Part 4 Technical ReferenceBJC-7100 Figure 4-22 Block Diagram of BC-61/BC-62e Photo Drive Circuit4-25 Part 4 Technical ReferencePart 4 Technical Reference 4-263 Description of block diagram Block enable decoder *1 BJC-71004-27 TABLE 4-5 ELECTRODE CONNECTION PINSTABLE 4-4 AND GATE CONTACTS AND IDATA ORDER BJC-7100TABLE 4-6 INDEX CONNECTIONS TABLE 4-7 INDEX SENSOR SIGNALS AND BJ CARTRIDGE DETECTION3.2.6 BJ cartridge detection 4-282 Cleaning function 3.3 Purge Unit 3.3.1 Function of purge unit4-29 BJC-71004-30 TABLE 4-8 CLEANING CONDITIONS AND INK CONSUMPTION AVERAGE3.3.2 Structure of purge unit Part 4 Technical ReferencePart 4 Technical Reference 4-31BJC-7100 2 WiperPurge Unit Figure 4-23 Purge Unit4-32 Part 4 Technical ReferenceFigure 4-24 Carriage Paper Feed Motor Drive Switching Mechanism3.4 Carriage 3.4.1 Carriage functions 4-333 Paper feed motor drive switching mechanism 3.4.2 Carriage structure4-34 Part 4 Technical ReferenceDriving Sheet Feeder Figure 4-25 Paper Feed Motor Drive Switching4-35 Feeding Paper3.5.1 Paper feed/sheet feeder mechanism functions Figure 4-26 Auto Platen-Head Gap Adjustment3.5 Paper Feed/Sheet Feeder Mechanism 4-36Figure 4-27 Paper Feed Mechanism Auto Sheet Feeder ASFManual Feed 4-374-38 3.5.2 Paper feed/sheet feeder mechanism structureFigure 4-28 Paper Separator Part 4 Technical ReferenceFigure 4-29 Printer Electrical System 4. PRINTER ELECTRICAL SYSTEM4.1 Overview of Printer Electrical System 4-394-40 4.2 Logic 4.2.1 Logic block diagramFigure 4-30 Logic Board Block Diagram Part 4 Technical ReferenceDirect memory access DMA controller 4.2.2 Logic components4-41 Timer stepping motor controller/sense signal controller/monitor timerPart 4 Technical Reference 4-42Clock & power manager BJC-71005 Reset IC IC8 Figure 4-31 Printer Block Diagram4-43 BJC-7100Part 4 Technical Reference Figure 4-32 Motor Drive Circuit4-44 BJC-71004.3.2 Output voltages 4.3 Electrical System 4.3.1 Input power supply AC adaptorFigure 4-33 AC Adaptor Output Voltages 4-45Figure 4-34 Sensor Positions 5. DETECTION FUNCTIONS5.1 Sensor-based Detection Functions 4-46Part 4 Technical Reference 4-47BJC-7100 Purge sensor5.2.2 BJ cartridge detection 5.2 Miscellaneous Detection Functions5.2.1 Waste-ink amount detection 5.2.3 Ink-out detectionBJC-7100 4-493 Ink-out error display Part 4 Technical ReferenceThis page intentionally left blank 4-50Part 4 Technical Reference BJC-7100MAINTENANCE PartPage 1.4 Periodic Maintenance 1. MAINTENANCE1.1 Parts for Periodic Replacement 1.2 Consumable PartsPart 5 Maintenance 2. SERVICING TOOLS2.1 List of Tools BJC-7100MOLYKOTE PG641 3. APPLYING GREASEFigure 5-1 Grease Points Part 5 Maintenance4.2 Notes on Disassembly and Reassembly 4. DISASSEMBLY AND REASSEMBLY4.1 Disassembly and Reassembly Figure 5-2 Main Cover and Connector Cover4.2.5 Securing idler pulley assembly screw 4.2.4 Purge unit and bottom case assemblyFigure 5-5 Purge Unit and Bottom Case Assembly Figure 5-6 Tightening Idler Pulley Assembly ScrewPart 5 Maintenance Figure 5-7 Maintenance Jet and Waste Ink Absorbers4.3 Waste Ink Absorbers BJC-7100Part 5 Maintenance 4.4 Assembling the ChassisFigure 5-8 Tightening the Chassis Fixing Screws BJC-71005.1.2 Checking and adjusting the head gap 5. ADJUSTMENTS5.1 Adjustment Locations 5.1.1 Adjusting registration Figure 5-9 Screws Influencing Head GapPart 5 Maintenance Figure 5-10 Measuring Sheet SettingFigure 5-11 Measuring Sheet Setting BJC-71005-10 Figure 5-12 Thickness Gauge SettingFigure 5-13 Check the Head Gap Part 5 MaintenancePart 5 Maintenance Figure 5-14 Adjust the Head Gap5-11 2. Head Gap Check/Adjustment FlowchartPart 5 Maintenance Figure 5-15 Adjust the Head Gap5-12 BJC-71006.1.2 Troubleshooting cautions 6. TROUBLESHOOTING6.1 Troubleshooting Overview 6.1.1 Overview 5-13Part 5 Maintenance 6.2 Diagnosis 6.2.1 Diagnostic flow5-14 Connect power cable of AC adaptor to wall outletBJC-7100 5-15Part 5 Maintenance Measure 1. Print Position Correction Error6.2.2 Action 5-168.3Ω/phase 5-17Part 5 Maintenance BJC-71005-18 3. Purge Error2. Home Position Error Part 5 MaintenancePart 5 Maintenance 4. Sheet Feeder Error5-19 BJC-7100Part 5 Maintenance 5. Printer Temperature Error5-20 MeasureAlarm/Full Error 7. EEPROM Error9. RAM Error 6. Waste InkPart 5 Maintenance 11. LF Motor Error5-22 Measure12. Miscellaneous ErrorsHardware 5-23Part 5 Maintenance 13. Paper-out and Paper-jam Errors5-24 Beeper 2 times ERROR indicator ON POWER indicator BlinksBJC-7100 5-25Part 5 Maintenance 2. Paper jamPart 5 Maintenance 14. Ink-out Error5-26 BJC-7100BJC-7100 5-27Part 5 Maintenance 2. Color BJ cartridge BC-61 Photo BJ cartridge BC-62e PhotoPart 5 Maintenance 15. BJ Cartridge Error5-28 MeasureSuspected parts BJ cartridge Overheat Error16. BJ Cartridge Part 5 MaintenancePart 5 Maintenance 1. The power does not turn on5-30 b SymptomsPart 5 Maintenance 2. Abnormal noise5-31 BJC-7100BJC-7100 5-32Part 5 Maintenance Check for foreign objects Check for deformed or damaged gearsPart 5 Maintenance 3. Faulty pickup5-33 BJC-7100Part 5 Maintenance 4. Faulty printing 1 No printing5-34 MeasureBJC-7100 5-35Part 5 Maintenance 1. Check/replace carriagePart 5 Maintenance 5. Faulty printing 2 Miscellaneous problems5-36 SymptomsCNCR Carriage Motor Connector 7. CONNECTOR LAYOUT AND SIGNAL ASSIGNMENTCNPGS Purge Sensor Connector CNLF Paper Feed Motor ConnectorCNHEAD2 Carriage Cable Connector CNIF Parallel Interface ConnectorCNHEAD1 Carriage Cable Connector 5-38TABLE 5-1 CONTACTS DARK COL AND LIGHT COL 7.2 Carriage BoardFigure 5-17 Carriage Board 5-395-40 JENG1 Carriage Cable ConnectorJENG2 Carriage Cable Connector Part 5 MaintenancePart 5 Maintenance BLACK Cartridge Cable5-41 BJC-71005-42 AMM Cartridge CableDARKCOL Cartridge Cable Part 5 MaintenancePart 5 Maintenance LIGHTCOL Cartridge Cable5-43 BJC-7100Figure 5-18 Logic Board Face Figure 5-19 Component Board Back 8. CIRCUIT DIAGRAMS8.1 Parts Layout 8.1.1 Logic board 5-445-45 8.1.2 Carriage boardFigure 5-20 Carriage Board Face Figure 5-21 Carriage Board Back Part 5 MaintenanceThis page intentionally left blank 5-46Part 5 Maintenance BJC-7100Part 5 Maintenance 8.2 Circuit Diagrams 8.2.1 Logic board5-47 BJC-7100BJC-7100 5-48Part 5 Maintenance LOGIC BOARDBJC-7100 5-49Part 5 Maintenance A B C DBJC-7100 5-50Part 5 Maintenance LOGIC BOARDPOWER SUPPLY 5-51Part 5 Maintenance BJC-7100Page PRINTED IN JAPAN IMPRIME AU JAPON The printing paper contains 70% waste paper