Epson DFX-8500 guide

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Epson DFX-8500 service manual

Contents

DFX-8500 Copyright 1998 by Seiko Epson Corporation Nagano, Japan Precautions Preface Revision Issued Data Contents Revision Sheet Table of Contents Chapter Page Features DFX-8500 Exterior View Option Code Name NLQ SpecificationsPrinting Specification Brascii PC866 UKR PC AptecUSA UPC-A UPC-E Character tables and type faces Character Table Bitmap Font BRASCII*1 Electrical Specification Paper FeedingEnvironmental Condition Reliability Safety Approvals Physical SpecificationsCE Marking Acoustic Noise Printable area Continuous Paper MR 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 Labels Labels Front Entry Rear Entry Minimum MaximumForm Labels Width Height Inch Continuous Forms with Labels Avery Continuous Form Labels Overlapping Multi-part Form Perforation 12. Paper Width Overlapping Area 16. Raised Portion at a Perforation Interfaces Parallel Interface Forward channel Signal Level Parameter Minimum Maximum Condition Parallel Interface Reverse channel Serial Interface Optional Interface Interface Selection Prevention Hosts from Data Transfer Time-out Operating Instructions Control Panel Switches Indicators Paper Out Ribbon Beeper *1 Description Errors and Buzzers15. Error/Warning Buzzer Information DIP Switch Settings ESC/P 17. Character Table Setting Standard SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 Character tablePC866 UKR Pcaptec 23. 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 Functions Usual operation Current paper No. is not a or b ‰Paper SelectCurrent paper No. is a or b Operation at Power On Built-in Detection ‰How to recall memories Paper Memory Function Power-on Initialization InitializationsSoftware Initialization Panel Initialization Main Component 24. Main Components 1 M-3I60 Printer Mechanism 25. M-3I60 Printer Mechanism Reset IC Main Control Board C204 Main BoardRAM ADM232L 3 C204 DRV Board 27. C204 DRV Board 4 C204 DRV-B Board 5 C204 SUB Board 6 C204 PSB/PSE Board 30. C204 PSB/PSE Board Housing 31. HousingPage Operating Principles Page ‰Plunger mechanism Printer Mechanism Operation‰Printhead ‰Interlock switch ‰Auto platen gap adjustment mechanism‰Carriage mechanism ‰Ribbon feed mechanism ‰Paper feed mechanism ‰Tractor select mechanism Printhead Mechanism Printhead Mechanism Carriage Mechanism Carriage Mechanism Platen Gap Adjustment Mechanism Platen Gap Adjustment Mechanism Paper Feed Mechanism Tension Roller and PF Roller Operation Pinion Gear Tractor Wire Operation 10. Tractor Wire Operation Ribbon Feed and Tractor Select Mechanisms 11. Ribbon Feed Mechanism 12. Tractor Select Mechanism Plunger Mechanism 13. Plunger Mechanism Power Supply Operation Power Supply Boards Input Input Voltage Fuse RatingsPower Supply Board Output Specification +5V DC Line Power Supply Overview 14. Power Supply Board Block Diagram ‰General ‰37V line block ½‰37V line block 2/2 ‰Cooling fan ‰Control and status signals ‰Fatal error recoveryPSB/PSE Board Control Signals Logic Function Out*1 ‰Protection circuits Control Circuit Control Circuit Operation Overview 15. Control Circuit Block Diagram Main IC Functions 16. Parallel Interface Data Flow Reset Circuit ‰Power On/Off Reset‰Forced Reset ‰/INIT Signal Reset 18. Sensor Circuit Block Diagram Sensor Circuits Platen Gap encoder sensor DFX-8500 At Super draft printing, + 10 % CR Motor Specifications DescriptionCR Motor Drive Circuit Curve Control NLQ HD ‰PI Control ‰Acceleration controlSpeed 0 SP1 SP1 SP2 SP3 Speed ‰Deceleration controlCurrent speed SP3 PF Motor Drive Circuit PF Motor SpecificationsSpecification Description 10. RF Motor Specifications RF Motor Drive Circuit 11. PG Motor Specifications PG Motor Drive Circuit 12. Plunger Specifications Plunger Drive Circuit 27. Printhead Drive Circuit Block Diagram Printhead Drive Circuit ‰Printhead high temperature feedback operation ‰HF temperature feedback operation Interlock Switch and Cover Open Sensor Assembly Removal Circuit Boards RemovalPage Precautions for Disassembly and Assembly Overview Packing Material Attaching Tools Recommended Tools Type Class Code Reference Dial Gauges Specification for Screws Screw AbbreviationsAbbreviation Part Name Screw Names and Illustrations Service Checks After Repair Inspection Check List for the Repaired Printer Disassembly and Assembly ROM Replacement ROM Replacement Printhead and Ribbon Mask Assembly Removal Printhead Kit Front side 12. Printhead Removal Adjustment Required Housing Removal Top Cover Removal Left, Right, and Front Covers Removal and Fuse Replacement 17. Left and Right Side Covers Removal G h t S i d e -19. Fuse Removal 20. Front Cover Removal Front Panel Unit Removal 21. Front Panel Removal Upper Case Removal 22. Upper Case Removal Bottom Panel Assembly Removal Circuit Boards Removal 24. Connector and Earth Cable Removal left side 26. Bottom Panel Assembly Removal Cooling Fan and C204 Power Supply Board Unit Removal 27. C204 PSE/PSB Board Removal 4.3 C204 SUB Board Unit Removal 28. C204 SUB Board Unit Removal 4.4 C204 DRV-B and C204 DRV Board Units Removal 29. C204 DRV/DRV-B Boards Removal ½ 4.5 C204 Main Board Unit Removal 31. C204 Main Board Removal 1/4 34.C204 Main Board Removal 4/4 AC Inlet Removal 35. Grounding Plate Removal 4.7 C204 PNL Board Removal 37. C204 PNL Board Removal Interlock Switch and Cover Open Sensor Assembly Removal 38. Interlock Switch Assembly Removal 41. Connector Removal left side Printer Mechanism Removal Adjustment Required Fan Removal 45. Fan Removal Ribbon Feed Change Lever Unit Removal 46. Ribbon Feed Change Lever Unit Removal 1/2 48. Removing Connectors Tractor Select Lever Upper and Lower Assembly Disassembly 49. Tractor Select Lever Disassembly Ribbon Jam Sensor Removal 51. Ribbon Jam Sensor Removal 52. Connector Junction Board Removal PG Sensor and PG Motor Removal 53. PG Sensor and PG Motor Removal Plunger and Paper Bail Assembly Removal 54. Plunger Removal 55. Paper Bail Assembly Removal 1/2 57. Top PE Sensor Connector Removal Upper Paper Guide and Top PE Sensor Removal Tension Roller Shaft Removal 59. Tension Roller Gear Removal 60. Shaft Holder Removal Platen Removal 62. Platen Removal Paper Jam Sensor Removal 64. Lower Paper Guide Left Part Removal Pull Tractor Sensor Removal 66. Pull Tractor Sensor removal Paper Width PW Sensor Removal 67. PW Sensor Removal PG Home Sensor Removal 68. Carriage Guide Shaft Gear Removal 70. CR Guide Shaft Gear Phase Alignment PF Motor Removal 71. PG Home Sensor Removal Left Side Frame Gear Removal 72. Left Side Frame Gear Removal Front Tractor Assembly Removal 73. Tractor Wire Removal Rear Tractor Assembly Removal 75. Rear Tractor Assembly Removal CR Motor Fan Removal 76. CR Motor Fan Removal CR Motor Removal 77. CR Motor Removal CR Carriage Encoder Sensor Removal 78. CR Sensor Removal 1/2 Carriage Mechanism Disassembly 80. Belt Pulley Removal 82. Rear Carriage Guide Shaft Removal Assembling Point Paper Support Assembly Removal 6.24 3.2.6.21 PF Drive Roller Removal Adjustment Page Printer Mechanism Adjustments PG Motor Backlash Adjustment Carriage Timing Belt Tension Adjustment Carriage Timing Belt Tension Adjustment Tractor Wire Spring Tension Adjustment Tractor Wire Tension Adjustment Front Pull Tractor Sensor Position Adjustment Pull Tractor Sensor Position Adjustment Carriage Guide Shaft Parallelism Adjustment Set Dial Gauge to Dial Gauge Base Black Marker to 0 Position Setting R r ia g e 11. Carriage Guide Shaft Parallelism Adjustment Platen Angle Adjustment 13. Loosing Hexagonal Screws 70 mm Center Position Platen BitA BitB Down AngleAdjustmentMethod Platen Gap Motor Value Adjustment 17. Alpha Value Print Alpha Value Write Mode Beta Values Write Mode Default Value*1 Beta Measurement 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 Troubleshooting Information Error Messages Bypassing Interlock Switch and Cover Open Sensor Interlock Switch Assembly Location Coil Resistance Motor, Fan, Plunger, and Printhead Coil Resistance Part FPC a FPC B FPC C Printer does not operate when power is turned on Start Carriage operation is abnormal END Start DFX-8500 END Printing is normal, but paper feeding is abnormal Start Panel unit operation is abnormal Start 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 Symptom Cause Checkpoint Solution C204 MAIN/DRV/DRV-B boards Component Repair 2/7 DFX-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 Lubrication Points Ref. No Ref. Figure Lubricant Adhesive Application Points Ref. No Ref. Figure Lubrication and Adhesive Diagram DFX-8500 Maintenance Page Appendix Page Connector PIN Assignments Figure A-1. Cable Connection C204 PSB/PSE board C204 DRV BoardC204 DRV-B Board Hfanb FtmpFancom Htmp Table A-8. C204 Main Board Connector CN7 Table A-9. C204 Main Board Connector CN8Table A-10. C204 Main Board Connector CN9 Table A-11. Digital Board Connector CN10 Btxd XreadyBrxd Bxrst VP3 FANPLN RFH/R Table A-15. C204 Main Board Connector CN16 Table A-18. C204 DRV-B Board Connector CN1 Table A-19. C204 PSB/PSE Board Connector CN1Table A-20. C204 PSB/PSE Board Connector CN5 GMD Circuit Diagrams Figure A-2. C204 Main Board Exploded DiagramPage 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 Exploded Diagrams Figure A-16. Exploded Diagrams for DFX-8500 Figure 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 Epson AMERICA, Inc Epson Deutchland GmBH Imaging & Information Products Division Epson