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Canon QY8-1360-000 Overview of Printer Electrical System, 29 Printer Electrical System, 4-39

Models: QY8-1360-000

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4.PRINTER ELECTRICAL SYSTEM

BJC-7100

Part 4: Technical Reference

4.PRINTER ELECTRICAL SYSTEM

4.1Overview of Printer Electrical System

The printer's electrical system can functionally be split into the logic (logic board and carriage board) and the power supply.

The logic converts the data received from the interface into print signals and printer command signals, and drives the BJ cartridge and motors while monitoring the various sensors.

The power supply distributes the DC input power from the AC adaptor into power supplies to drive the logic board, motors, and print heads, etc.

When the AC adaptor is connected to a power outlet and a DC supply is therefore input to the BJC-7100 printer (and the printer has not yet been turned on using the POWER button), all buttons except the POWER button are inactive, the photointerrupter sensors are inactive, and any signals input from the interface are ignored. In all other respects, the hardware is active.

CNHEAD1

Pickup Roller Sensor

Carriage Motor

Purge Sensor Paper End Sensor

AC Adaptor

EEPROM

RESUME Switch

CNHEAD2

Error Indicator

POWER Switch

POWER Indicator

Cartridge REPLACE Switch

MPU

Control ROM

Printer Controller

CNCR

Carriage Motor Driver

Paper Feed Motor Driver

CNLF

Paper Feed Motor

CNPWR

DRAM

CNPGS Regulator

Reset IC

Figure 4-29 Printer Electrical System

4-39

Image 119

Canon QY8-1360-000 manual Overview of Printer Electrical System, 29 Printer Electrical System, 4-39, BJC-7100

Contents

REVISION OCT. 1998QY8-1360-0001098 AB Page Target Readers Copyright 1998 by Canon Inc CANON INCBJ Products Quality Support Dept 16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki, Kanagawa 213, JapanI. ABOUT THIS MANUAL Part 1 Safety and PrecautionsPart 2 Product Specifications Part 5 MaintenancePart 2 PRODUCT SPECIFICATIONS II. TABLE OF CONTENTSPart 1 SAFETY AND PRECAUTIONS Part 4 TECHNICAL REFERENCE Part 3 OPERATING INSTRUCTIONSPart 5 MAINTENANCE Page Part 3 OPERATING INSTRUCTIONS Part 2 PRODUCT SPECIFICATIONSIII. ILLUSTRATION INDEX Part 1 SAFETY AND PRECAUTIONSPart 4 TECHNICAL REFERENCE Part 5 MAINTENANCEPage VIIIPart 3 OPERATING INSTRUCTIONS IV. TABLE INDEXPart 2 PRODUCT SPECIFICATIONS Part 5 MAINTENANCEPage Part SAFETY AND PRECAUTIONSPage Figure 1-1 The Printers Moving Parts 1. SAFETY PRECAUTIONSBJC-7100 1.1 Moving PartsPart 1 Safety and Precautions 1.2 Front CoverFigure 1-2 Front Cover BJC-7100BJC-7100 1.3 Ink Stains 1.3.1 Ink pathFigure 1-3 Ink Path Part 1 Safety and Precautions1.3.2 Ink mist BC-62e PhotoBC-61 Figure 1-4 BC-62e Photo and BC-61BJC-7100 1.4 Live PartsFigure 1-6 AC Adapter Part 1 Safety and Precautions1. Overheat detection when replacing cartridge 1.5 BJ Cartridge Metal PlateFigure 1-7 BJ Cartridge Metal Plate Part 1 Safety and Precautions2.1.2 BJ cartridge protection 2. MACHINE PRECAUTIONS2.1 BJ Cartridge Handling 2.1.1 Unpacking the BJ cartridge Figure 1-8 Removing the BJ Cartridge Cap and TapePart 1 Safety and Precautions 2.1.3 Power on/off2.1.4 When not using the printer Figure 1-9 BJ Cartridges2.2.2 Preventing clogging 2.1.5 Ink electroconductivity2.2 Ink Tank Handling 2.2.1 Unpacking the ink tank Figure 1-10 Removing the Ink Tank CapFigure 1-13 Contacts 2.3 Printer Handling 2.3.1 SpursFigure 1-12 Spurs 2.3.2 Damage due to static electricityFigure 1-15 Carrying the Printer 2.3.3 Ink leakage and dry-outFigure 1-14 Capping Position 2.3.4 Carrying the printerPart 1 Safety and Precautions 3. NOTES ON SERVICING3.1 EEPROM Data 1-121-13 3.2 Service Mode of Printer Driver3.3 Protecting the Power Supply Figure 1-16 Protecting the Power Supply1-14 3.4 Static ElectricityStatic Damage Figure 1-17 Electrical System of Printer1-15 3.5 Disassembly and Assembly 3.5.1 Parts that cannot be disassembledFigure 1-18 Parts that Cannot be Disassembled 3.6 Self-DiagnosisBJC-7100 This page intentionally left blank1-16 Part 1 Safety and PrecautionsPart PRODUCT SPECIFICATIONSPage Part 2 Product Specifications 1. PRODUCT OUTLINE1.1 Outline Figure 2-1 Printer AppearanceBJC-7100 1.2 FeaturesPart 2 Product Specifications BJC-7100 1.3 BJ Cartridge 1.3.1 Black BJ cartridge BC-60Figure 2-2 Black BJ Cartridge BC-60 Part 2 Product SpecificationsBJC-7100 1.3.2 Photo BJ cartridge BC-62e PhotoFigure 2-3 Photo BJ Cartridge BC-62e Photo Part 2 Product SpecificationsFigure 2-4 Color BJ Cartridge BC-61 1.3.4 BJ cartridge vs print modeTABLE 2-1 BJ CARTRIDGE VS PRINT MODE 1.3.3 Color BJ cartridge BC-611.5.2 Ink tank 1.4 SB-60 BJ Cartridge ContainerFigure 2-5 BJ Cartridge SB-60 1.5 Consumables 1.5.1 BJ cartridge2. Operating mode Canon extended mode 3. Print resolution 2. SPECIFICATIONS2.1 General Specifications Part 2 Product Specifications14. Sheet feeder capacity Part 2 Product SpecificationsBJC-7100 13. Paper Feeding method21. External dimensions BJC-7100Part 2 Product Specifications 20. Power consumptionPart 2 Product Specifications 2.2 Paper Specifications 2.2.1 Paper typesTABLE 2-2 PAPER SPECIFICATIONS 2-10Part 2 Product Specifications 2.2.2 Printing rangeFigure 2-7 Printing Area 2-11Part 2 Product Specifications 2.3 Interface SpecificationsTABLE 2-3 IO SIGNALS IN COMPATIBLE MODE 2-12Part 2 Product Specifications TABLE 2-4 IO SIGNALS IN NIBBLE MODETABLE 2-5 IO SIGNALS IN ECP MODE 2-13BJC-7100 2-14Part 2 Product Specifications 7 Description of input/output signals Compatible ModeNibble Mode HostClk Input 2-15Part 2 Product Specifications Fault OutputBJC-7100 2-16Part 2 Product Specifications ECP mode HostClk InputAck Reverse Output 2-17Part 2 Product Specifications BJC-71002-18 Figure 2-8 Compatible ModeFigure 2-9 Nibble Mode Figure 2-10 ECP ModePart OPERATING INSTRUCTIONSPage BJC-7100 1. PRINTER SETUP1.1 Unpacking Figure 3-1 PackagingBJC-7100 1.2 Installation LocationFigure 3-2 Printer Dimensions Part 3 Operating Instructions1.3.2 Connecting the power supply 1.3 Installation1.3.1 Connecting the interface cable Figure 3-3 Connecting the Interface Cable2 Installing the BJ cartridge 1.3.3 Installing the BJ cartridgeFigure 3-6 Installing BJ Cartridges Figure 3-5 Removing Cap and Tape from BJ Cartridge3 Aligning the print heads Figure 3-7 Checking Print Head AlignmentBJC-7100 Part 3 Operating Instructions1 When to replace the ink tank 1.3.4 Replacing the ink tanksFigure 3-8 Replacing the Ink Tank Figure 3-9 Removing Protective Cap from Ink TankPart 3 Operating Instructions 1.3.5 Cartridge container SB-60Figure 3-10 Cartridge Container SB-60 BJC-7100Part 3 Operating Instructions 1.4 Turning Printer Power On and Off 1.4.1 Turning the power on1.4.2 Turning the power off Figure 3-11 Incorrect Method of Powering OffBJC-7100 TABLE 3-1 PRINTER PAPER SETTINGSFigure 3-12 Paper Settings 1.5 Loading Printer PaperFigure 3-13 Names of Parts and Their Functions 1.6 Names of Parts and Their FunctionsFRONT OPERATOR PANEL3-11 INSIDEBACK Figure 3-14 Names of Parts and Their Functions3-12 2. TRANSPORTING THE PRINTER2.1 Transporting the Printer Figure 3-15 Transporting the PrinterBJC-7100 2.2 Manual CappingFigure 3-16 Manual Capping Method 3-13Figure 3-17 Control Panel 3.1 Error Indications3.1.1 Operator call errors 3. PRINTER SERVICING FUNCTIONSIf a service call occurs, refer to Part 5 6. TROUBLESHOOTING page 3.1.2 Service callsTABLE 3-3 SERVICE CALLS 3-15BJC-7100 3.2 Warning Indications3-16 Part 3 Operating Instructions3-17 3.3 Function Settings3.3.1 Items set by control function Figure 3-18 Windows 95 Driver Control Sheet SampleProcedure 3.3.2 Service mode of printer driverFigure 3-19 Hidden Control Sheet Sample 3-18Manual Print Head Cleaning 3.5 Cleaning the BJ Cartridge3.4 EEPROM 3-193-20 3.7 Pickup Roller Cleaning Function HR-1013.6 Test Printout Figure 3-20 Nozzle Check Pattern SampleBJC-7100 3.8 Service ModeTABLE 3-4 SERVICE MODE 3-213-22 Figure 3-21 Service Mode Test Print Sample3.8.2 Resetting EEPROM data 3.8.1 Final factory test pattern3-23 3.8.4 Setting destination country3.8.3 Printing EEPROM data Figure 3-22 EEPROM Data Print SampleBJC-7100 3.8.5 Other Function3-24 Part 3 Operating InstructionsPart TECHNICAL REFERENCEPage BJC-7100 1.1 Printer Block DiagramFigure 4-1 Printer Block Diagram 1. OVERVIEWBJC-7100 1.2 Initial FlowchartFigure 4-2 Flowchart of Initialization Sequence Part 4 Technical ReferencePart 4 Technical Reference 1.3 Print Signal SequenceFigure 4-3 Print Signal Sequence BJC-7100BJC-7100 1.4 BJ Cartridge Drive1.4.1 Print drive control Part 4 Technical ReferencePart 4 Technical Reference 1.5 Power-Off Sequence FlowchartFigure 4-4 Power-Off Sequence Flowchart BJC-71002. FIRMWARE Figure 4-5 Bidirectional Centronics Specifications Selection Sequence2.1.1 Compatible mode Figure 4-6 Interface Timing Compatible ModeFigure 4-8 Interface Timing ECP Mode 2.1.2 Nibble modeFigure 4-7 Interface Timing Nibble Mode 2.1.3 ECP modeBJC-7100 2.2 Print ModesTABLE 4-1 NUMBER OF PASSES VS NUMBER OF OPERATIONAL HEAD NOZZLES Part 4 Technical Reference2.2.4 High quality and fine mode 2.2.1 Plain paper optimized printing mode P-POP2.2.2 Economy print mode Draft mode 2.2.3 Standard mode4-10 2.2.5 Print mode settingsTABLE 4-2 MAIN DEFAULT PRINT MODE SETTINGS Figure 4-10 Print Mode Main Sheet Sample2.4.2 Head sticking prevention Figure 4-11 Print Mode Detail Quality Sheet Sample2.4 Print Optimization Controls 2.4.1 Power monitor 2.3 Smoothing FunctionBJC-7100 2.5 Head Overheat Protection4-12 Part 4 Technical Reference4-13 3. PRINTERS MECHANICAL SYSTEM3.1 Overview Figure 4-12 Printers Mechanical SystemBJC-7100 3.1.1 Structure of printers mechanical system4-14 Part 4 Technical ReferenceBJC-7100 3.2 BJ Cartridge 3.2.1 BJ cartridge structureFigure 4-13 Structure of BC-60 4-15BJC-7100 Figure 4-14 Structure of BC-614-16 Part 4 Technical ReferencePart 4 Technical Reference Figure 4-15 Structure of BC-62e Photo4-17 BJC-7100Air paths/Tank label 4-18Part 4 Technical Reference BJC-71004-19 3.2.2 Structure of BJ head unitFigure 4-16 Structure of BC-60 BJ Head Unit Figure 4-17 Structure of BC-61 BJ Head UnitBJC-7100 Figure 4-18 Structure of BC-62e Photo BJ Head Unit4-20 Part 4 Technical ReferenceBJC-7100 3.2.3 Nozzle arraysFigure 4-19 Nozzle Arrays 4-214-22 3.2.4 Signal contactsFigure 4-20 Signal Contacts TABLE 4-3 BJ HEAD INPUT AND OUTPUT SIGNALSPart 4 Technical Reference 4-23BJC-7100 Part 4 Technical Reference Figure 4-21 Block Diagram of BC-60 Drive Circuit3.2.5 Drive circuit 4-24Part 4 Technical Reference Figure 4-22 Block Diagram of BC-61/BC-62e Photo Drive Circuit4-25 BJC-7100Part 4 Technical Reference 4-263 Description of block diagram Block enable decoder *1 Head temperature sensorBJC-7100 TABLE 4-5 ELECTRODE CONNECTION PINSTABLE 4-4 AND GATE CONTACTS AND IDATA ORDER 4-274-28 TABLE 4-7 INDEX SENSOR SIGNALS AND BJ CARTRIDGE DETECTION3.2.6 BJ cartridge detection TABLE 4-6 INDEX CONNECTIONSBJC-7100 3.3 Purge Unit 3.3.1 Function of purge unit4-29 2 Cleaning functionPart 4 Technical Reference TABLE 4-8 CLEANING CONDITIONS AND INK CONSUMPTION AVERAGE3.3.2 Structure of purge unit 4-302 Wiper 4-31BJC-7100 Part 4 Technical ReferencePart 4 Technical Reference Figure 4-23 Purge Unit4-32 Purge Unit4-33 Paper Feed Motor Drive Switching Mechanism3.4 Carriage 3.4.1 Carriage functions Figure 4-24 CarriagePart 4 Technical Reference 3.4.2 Carriage structure4-34 3 Paper feed motor drive switching mechanismFeeding Paper Figure 4-25 Paper Feed Motor Drive Switching4-35 Driving Sheet Feeder4-36 Figure 4-26 Auto Platen-Head Gap Adjustment3.5 Paper Feed/Sheet Feeder Mechanism 3.5.1 Paper feed/sheet feeder mechanism functions4-37 Auto Sheet Feeder ASFManual Feed Figure 4-27 Paper Feed MechanismPart 4 Technical Reference 3.5.2 Paper feed/sheet feeder mechanism structureFigure 4-28 Paper Separator 4-384-39 4. PRINTER ELECTRICAL SYSTEM4.1 Overview of Printer Electrical System Figure 4-29 Printer Electrical SystemPart 4 Technical Reference 4.2 Logic 4.2.1 Logic block diagramFigure 4-30 Logic Board Block Diagram 4-40Timer stepping motor controller/sense signal controller/monitor timer 4.2.2 Logic components4-41 Direct memory access DMA controllerBJC-7100 4-42Clock & power manager Part 4 Technical ReferenceBJC-7100 Figure 4-31 Printer Block Diagram4-43 5 Reset IC IC8BJC-7100 Figure 4-32 Motor Drive Circuit4-44 Part 4 Technical Reference4-45 4.3 Electrical System 4.3.1 Input power supply AC adaptorFigure 4-33 AC Adaptor Output Voltages 4.3.2 Output voltages4-46 5. DETECTION FUNCTIONS5.1 Sensor-based Detection Functions Figure 4-34 Sensor PositionsPart 4 Technical Reference 4-47Printer temperature sensor BJC-71005.2.3 Ink-out detection 5.2 Miscellaneous Detection Functions5.2.1 Waste-ink amount detection 5.2.2 BJ cartridge detectionPart 4 Technical Reference 4-493 Ink-out error display BJC-7100BJC-7100 4-50Part 4 Technical Reference This page intentionally left blankPart MAINTENANCEPage 1.2 Consumable Parts 1. MAINTENANCE1.1 Parts for Periodic Replacement 1.4 Periodic MaintenanceBJC-7100 2. SERVICING TOOLS2.1 List of Tools Part 5 MaintenancePart 5 Maintenance 3. APPLYING GREASEFigure 5-1 Grease Points MOLYKOTE PG641Figure 5-2 Main Cover and Connector Cover 4. DISASSEMBLY AND REASSEMBLY4.1 Disassembly and Reassembly 4.2 Notes on Disassembly and ReassemblyFigure 5-6 Tightening Idler Pulley Assembly Screw 4.2.4 Purge unit and bottom case assemblyFigure 5-5 Purge Unit and Bottom Case Assembly 4.2.5 Securing idler pulley assembly screwBJC-7100 Figure 5-7 Maintenance Jet and Waste Ink Absorbers4.3 Waste Ink Absorbers Part 5 MaintenanceBJC-7100 4.4 Assembling the ChassisFigure 5-8 Tightening the Chassis Fixing Screws Part 5 MaintenanceFigure 5-9 Screws Influencing Head Gap 5. ADJUSTMENTS5.1 Adjustment Locations 5.1.1 Adjusting registration 5.1.2 Checking and adjusting the head gapBJC-7100 Figure 5-10 Measuring Sheet SettingFigure 5-11 Measuring Sheet Setting Part 5 MaintenancePart 5 Maintenance Figure 5-12 Thickness Gauge SettingFigure 5-13 Check the Head Gap 5-102. Head Gap Check/Adjustment Flowchart Figure 5-14 Adjust the Head Gap5-11 Part 5 MaintenanceBJC-7100 Figure 5-15 Adjust the Head Gap5-12 Part 5 Maintenance5-13 6. TROUBLESHOOTING6.1 Troubleshooting Overview 6.1.1 Overview 6.1.2 Troubleshooting cautionsConnect power cable of AC adaptor to wall outlet 6.2 Diagnosis 6.2.1 Diagnostic flow5-14 Part 5 MaintenanceBJC-7100 5-15Part 5 Maintenance 5-16 1. Print Position Correction Error6.2.2 Action MeasureBJC-7100 5-17Part 5 Maintenance 8.3Ω/phasePart 5 Maintenance 3. Purge Error2. Home Position Error 5-18BJC-7100 4. Sheet Feeder Error5-19 Part 5 MaintenanceMeasure 5. Printer Temperature Error5-20 Part 5 Maintenance6. Waste Ink 7. EEPROM Error9. RAM Error Alarm/Full ErrorMeasure 11. LF Motor Error5-22 Part 5 Maintenance5-23 ErrorsHardware 12. MiscellaneousBeeper 2 times ERROR indicator ON POWER indicator Blinks 13. Paper-out and Paper-jam Errors5-24 Part 5 Maintenance2. Paper jam 5-25Part 5 Maintenance BJC-7100BJC-7100 14. Ink-out Error5-26 Part 5 Maintenance2. Color BJ cartridge BC-61 Photo BJ cartridge BC-62e Photo 5-27Part 5 Maintenance BJC-7100Measure 15. BJ Cartridge Error5-28 Part 5 MaintenancePart 5 Maintenance Overheat Error16. BJ Cartridge Suspected parts BJ cartridgeb Symptoms 1. The power does not turn on5-30 Part 5 MaintenanceBJC-7100 2. Abnormal noise5-31 Part 5 MaintenanceCheck for foreign objects Check for deformed or damaged gears 5-32Part 5 Maintenance BJC-7100BJC-7100 3. Faulty pickup5-33 Part 5 MaintenanceMeasure 4. Faulty printing 1 No printing5-34 Part 5 Maintenance1. Check/replace carriage 5-35Part 5 Maintenance BJC-7100Symptoms 5. Faulty printing 2 Miscellaneous problems5-36 Part 5 MaintenanceCNLF Paper Feed Motor Connector 7. CONNECTOR LAYOUT AND SIGNAL ASSIGNMENTCNPGS Purge Sensor Connector CNCR Carriage Motor Connector5-38 CNIF Parallel Interface ConnectorCNHEAD1 Carriage Cable Connector CNHEAD2 Carriage Cable Connector5-39 7.2 Carriage BoardFigure 5-17 Carriage Board TABLE 5-1 CONTACTS DARK COL AND LIGHT COLPart 5 Maintenance JENG1 Carriage Cable ConnectorJENG2 Carriage Cable Connector 5-40BJC-7100 BLACK Cartridge Cable5-41 Part 5 MaintenancePart 5 Maintenance AMM Cartridge CableDARKCOL Cartridge Cable 5-42BJC-7100 LIGHTCOL Cartridge Cable5-43 Part 5 Maintenance5-44 8. CIRCUIT DIAGRAMS8.1 Parts Layout 8.1.1 Logic board Figure 5-18 Logic Board Face Figure 5-19 Component Board BackPart 5 Maintenance 8.1.2 Carriage boardFigure 5-20 Carriage Board Face Figure 5-21 Carriage Board Back 5-45BJC-7100 5-46Part 5 Maintenance This page intentionally left blankBJC-7100 8.2 Circuit Diagrams 8.2.1 Logic board5-47 Part 5 MaintenanceLOGIC BOARD 5-48Part 5 Maintenance BJC-7100A B C D 5-49Part 5 Maintenance BJC-7100LOGIC BOARD 5-50Part 5 Maintenance BJC-7100BJC-7100 5-51Part 5 Maintenance POWER SUPPLYPage The printing paper contains 70% waste paper PRINTED IN JAPAN IMPRIME AU JAPON