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Epson DFX-8500 service manual Figure A-19. Exploded Diagrams

Models: DFX-8500

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APPENDIX

Figure A-19. Exploded Diagrams (4)


Rev. B	A-35

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Epson DFX-8500 service manual Figure A-19. Exploded Diagrams

Contents

DFX-8500 Copyright 1998 by Seiko Epson Corporation Nagano, Japan Precautions Preface Revision Sheet Revision Issued Data ContentsTable of Contents Chapter Page DFX-8500 Exterior View FeaturesCode Name OptionNLQ SpecificationsPrinting Specification UPC-A UPC-E BrasciiPC866 UKR PC Aptec USABRASCII*1 Character tables and type faces Character Table Bitmap FontReliability Electrical SpecificationPaper Feeding Environmental ConditionAcoustic Noise Safety ApprovalsPhysical Specifications CE MarkingContinuous Paper Printable areaMR M C D Y Z General Description Continuous Paper Front Entry Rear Entry Minimum Maximum Paper and MediaContinuous paper Single sheet and multi-part Paper-stapling Height Width Height Inch LabelsLabels Front Entry Rear Entry Minimum Maximum Form LabelsAvery Continuous Form Labels Continuous Forms with LabelsPerforation Overlapping Multi-part Form12. Paper Width Overlapping Area 16. Raised Portion at a Perforation Parallel Interface Forward channel InterfacesSignal Level Parameter Minimum Maximum Condition Parallel Interface Reverse channel Optional Interface Serial InterfacePrevention Hosts from Data Transfer Time-out Interface SelectionControl Panel Operating InstructionsSwitches Indicators Paper Out Ribbon Beeper *1 Description Errors and Buzzers15. Error/Warning Buzzer Information ESC/P DIP Switch SettingsPcaptec 17. Character Table Setting StandardSW1-2 SW1-3 SW1-4 SW1-5 SW1-6 Character table PC866 UKR23. Serial I/F Baud Rate Setting SW4-7 SW4-8 Baud rate 21. I/F Selection SW4-3 SW4-4 Mode22. Serial I/F Parity Setting SW4-5 SW4-6 Serial parity Usual operation FunctionsCurrent paper No. is not a or b ‰Paper SelectCurrent paper No. is a or b Operation at Power On Built-in Detection Paper Memory Function ‰How to recall memoriesPanel Initialization Power-on InitializationInitializations Software Initialization24. Main Components Main Component25. M-3I60 Printer Mechanism 1 M-3I60 Printer MechanismADM232L Reset ICMain Control Board C204 Main Board RAM27. C204 DRV Board 3 C204 DRV Board5 C204 SUB Board 4 C204 DRV-B Board30. C204 PSB/PSE Board 6 C204 PSB/PSE Board31. Housing HousingPage Operating Principles Page ‰Plunger mechanism Printer Mechanism Operation‰Printhead ‰Ribbon feed mechanism ‰Interlock switch‰Auto platen gap adjustment mechanism ‰Carriage mechanism‰Tractor select mechanism ‰Paper feed mechanismPrinthead Mechanism Printhead MechanismCarriage Mechanism Carriage MechanismPlaten Gap Adjustment Mechanism Platen Gap Adjustment MechanismTension Roller and PF Roller Operation Paper Feed MechanismPinion Gear 10. Tractor Wire Operation Tractor Wire Operation11. Ribbon Feed Mechanism Ribbon Feed and Tractor Select Mechanisms12. Tractor Select Mechanism 13. Plunger Mechanism Plunger Mechanism+5V DC Line Power Supply OperationPower Supply Boards Input Input Voltage Fuse Ratings Power Supply Board Output Specification14. Power Supply Board Block Diagram Power Supply Overview‰Cooling fan ‰General‰37V line block ½ ‰37V line block 2/2‰Protection circuits ‰Control and status signals‰Fatal error recovery PSB/PSE Board Control Signals Logic Function Out*1Control Circuit Operation Overview Control Circuit15. Control Circuit Block Diagram Main IC Functions 16. Parallel Interface Data Flow ‰/INIT Signal Reset Reset Circuit‰Power On/Off Reset ‰Forced ResetSensor Circuits 18. Sensor Circuit Block DiagramPlaten Gap encoder sensor DFX-8500 At Super draft printing, + 10 % CR Motor Specifications DescriptionCR Motor Drive Circuit NLQ HD Curve ControlSP1 SP2 ‰PI Control‰Acceleration control Speed 0 SP1SP3 Speed ‰Deceleration controlCurrent speed SP3 PF Motor Drive Circuit PF Motor SpecificationsSpecification Description RF Motor Drive Circuit 10. RF Motor SpecificationsPG Motor Drive Circuit 11. PG Motor SpecificationsPlunger Drive Circuit 12. Plunger SpecificationsPrinthead Drive Circuit 27. Printhead Drive Circuit Block Diagram‰HF temperature feedback operation ‰Printhead high temperature feedback operationCircuit Boards Removal Interlock Switch and Cover Open Sensor Assembly RemovalPage Overview Precautions for Disassembly and AssemblyPacking Material Attaching Recommended Tools Type Class Code Reference ToolsDial Gauges Screw Names and Illustrations Specification for ScrewsScrew Abbreviations Abbreviation Part NameInspection Check List for the Repaired Printer Service Checks After RepairDisassembly and Assembly ROM Replacement ROM ReplacementPrinthead Kit Printhead and Ribbon Mask Assembly RemovalFront side 12. Printhead Removal Adjustment Required Top Cover Removal Housing Removal17. Left and Right Side Covers Removal Left, Right, and Front Covers Removal and Fuse Replacement20. Front Cover Removal G h t S i d e -19. Fuse Removal21. Front Panel Removal Front Panel Unit Removal22. Upper Case Removal Upper Case RemovalCircuit Boards Removal Bottom Panel Assembly Removal24. Connector and Earth Cable Removal left side 26. Bottom Panel Assembly Removal 27. C204 PSE/PSB Board Removal Cooling Fan and C204 Power Supply Board Unit Removal28. C204 SUB Board Unit Removal 4.3 C204 SUB Board Unit Removal29. C204 DRV/DRV-B Boards Removal ½ 4.4 C204 DRV-B and C204 DRV Board Units Removal31. C204 Main Board Removal 1/4 4.5 C204 Main Board Unit Removal34.C204 Main Board Removal 4/4 35. Grounding Plate Removal AC Inlet Removal37. C204 PNL Board Removal 4.7 C204 PNL Board Removal38. Interlock Switch Assembly Removal Interlock Switch and Cover Open Sensor Assembly RemovalPrinter Mechanism Removal 41. Connector Removal left sideAdjustment Required 45. Fan Removal Fan Removal46. Ribbon Feed Change Lever Unit Removal 1/2 Ribbon Feed Change Lever Unit Removal48. Removing Connectors 49. Tractor Select Lever Disassembly Tractor Select Lever Upper and Lower Assembly Disassembly51. Ribbon Jam Sensor Removal Ribbon Jam Sensor Removal52. Connector Junction Board Removal 53. PG Sensor and PG Motor Removal PG Sensor and PG Motor Removal54. Plunger Removal Plunger and Paper Bail Assembly Removal55. Paper Bail Assembly Removal 1/2 Upper Paper Guide and Top PE Sensor Removal 57. Top PE Sensor Connector Removal59. Tension Roller Gear Removal Tension Roller Shaft Removal60. Shaft Holder Removal 62. Platen Removal Platen Removal64. Lower Paper Guide Left Part Removal Paper Jam Sensor Removal66. Pull Tractor Sensor removal Pull Tractor Sensor Removal67. PW Sensor Removal Paper Width PW Sensor Removal68. Carriage Guide Shaft Gear Removal PG Home Sensor Removal70. CR Guide Shaft Gear Phase Alignment 71. PG Home Sensor Removal PF Motor Removal72. Left Side Frame Gear Removal Left Side Frame Gear Removal73. Tractor Wire Removal Front Tractor Assembly Removal75. Rear Tractor Assembly Removal Rear Tractor Assembly Removal76. CR Motor Fan Removal CR Motor Fan Removal77. CR Motor Removal CR Motor Removal78. CR Sensor Removal 1/2 CR Carriage Encoder Sensor Removal80. Belt Pulley Removal Carriage Mechanism Disassembly82. Rear Carriage Guide Shaft Removal Assembling Point Paper Support Assembly Removal 6.24 3.2.6.21 PF Drive Roller Removal Adjustment Page PG Motor Backlash Adjustment Printer Mechanism AdjustmentsCarriage Timing Belt Tension Adjustment Carriage Timing Belt Tension AdjustmentTractor Wire Tension Adjustment Front Tractor Wire Spring Tension AdjustmentPull Tractor Sensor Position Adjustment Pull Tractor Sensor Position AdjustmentSet Dial Gauge to Dial Gauge Base Carriage Guide Shaft Parallelism AdjustmentBlack Marker to 0 Position Setting R r ia g e 11. Carriage Guide Shaft Parallelism Adjustment 13. Loosing Hexagonal Screws Platen Angle Adjustment70 mm Center Position Platen BitA BitB Down AngleAdjustmentMethod 17. Alpha Value Print Platen Gap Motor Value AdjustmentBeta Values Write Mode Alpha Value Write ModeBeta Default Value*1Measurement Seeking and Bi-directional Printing Adjustment A R T A R T Lig h t T im e 23. Bi-d. Adjustment Page Chapter Troubleshooting Page Error Messages Troubleshooting InformationInterlock Switch Assembly Location Bypassing Interlock Switch and Cover Open SensorMotor, Fan, Plunger, and Printhead Coil Resistance Part Coil ResistanceFPC a FPC B FPC C Start Printer does not operate when power is turned onEND Carriage operation is abnormalStart DFX-8500 END Printing is normal, but paper feeding is abnormal Panel unit operation is abnormal StartStart 1 C204 PSB/PSE Board Repair C204 PSB/PSE Board Main Parts List Location DescriptionCircuit Board Repair DFX-8500 Troubleshooting 2 C204 MAIN/DRV/DRV-B Boards Repair C204 MAIN/DRV/DRV-B boards Component Repair 2/7 Symptom Cause Checkpoint SolutionDFX-8500 C204 MAIN/DRV/DRV-B boards Component Repair 4/7 DFX-8500 C204 MAIN/DRV/DRV-B boards Component Repair 6/7 DFX-8500 Printer Mechanism Repair DFX-8500 Adjustments DFX-8500 Chapter Maintenence Page Recommended Lubricants Type Name Quantity Availability Preventive MaintenanceLubrication and Adhesive Application Adhesive Application Points Ref. No Ref. Figure Lubrication Points Ref. No Ref. Figure LubricantLubrication and Adhesive Diagram DFX-8500 Maintenance Page Appendix Page Figure A-1. Cable Connection Connector PIN AssignmentsC204 PSB/PSE board C204 DRV BoardC204 DRV-B Board Htmp HfanbFtmp FancomTable A-11. Digital Board Connector CN10 Table A-8. C204 Main Board Connector CN7Table A-9. C204 Main Board Connector CN8 Table A-10. C204 Main Board Connector CN9Bxrst BtxdXready BrxdRFH/R VP3FAN PLNTable A-15. C204 Main Board Connector CN16 GMD Table A-18. C204 DRV-B Board Connector CN1Table A-19. C204 PSB/PSE Board Connector CN1 Table A-20. C204 PSB/PSE Board Connector CN5Figure A-2. C204 Main Board Exploded Diagram Circuit DiagramsPage Page Page Page Page Component Layout Figure A- 8. C204 Main Board Component Layout Figure A- 9. C204 DRV Board Component Layout Figure A- 11. C204 DRV-B Board Component Layout Figure A- 13. C204 PSB Board Component Layout Figure A- 14. C204 PSE Board Component Layout Connectors on Table A-20. Part List 1/3 Table A-20. Part List 2/3 Table A-20. Part List 3/3 Figure A-16. Exploded Diagrams for DFX-8500 Exploded DiagramsFigure A-16. Exploded Diagrams Figure A-17. Exploded Diagrams Figure A-18. Exploded Diagrams Figure A-19. Exploded Diagrams Figure A-20. Exploded Diagrams Figure A-21. Exploded Diagrams Figure A-22. Exploded Diagrams Figure A-23. Packing Material Imaging & Information Products Division Epson AMERICA, Inc Epson Deutchland GmBHEpson