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Epson B81306 series Service Manual

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TRANSPARENCY UNIT
B81306*
FOR EPSON IMAGE SCANNER
SERVICE MANUAL
EPSON

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Summary of Contents for Epson B81306 series

  • Page 1 TRANSPARENCY UNIT B81306* FOR EPSON IMAGE SCANNER SERVICE MANUAL EPSON...
  • Page 2 Alleffortshavebeen 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. EPSON can assume no responsibility for any errors in this above notwithstanding SEIKO manual or the consequence thereof.
  • Page 3 WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS. WARNING REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CER- MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLT- AGE, LISTED ON T’HE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A P RIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
  • Page 4 Includes a step-by-step guide for product disassembly and assembly. CHAPTER 4. ADJUSTMENTS This transparency unit is not needed any adjustment. CHAPTER 5. TROUBLESHOOTING Provides Epson-approved techniques for service. CHAPTER 6. MAINTENANCE Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment. APPENDIX Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.
  • Page 5 REVISION SHEET Issue Date Revision Page Revision Ist issue Rev. A November 28,1994...
  • Page 6 TABLE OF CONTENTS PRODUCT DESCRIPTION CHAPTER 1. CHAPTER 2. OPERATING PRINCIPLES DISASSEMBLY AND ASSEMBLY CHAPTER 3. ADJUSTMENTS CHAPTER 4. TROUBLESHOOTING CHAPTER 5. MAINTENANCE CHAPTER 6. APPENDIX...

  • Page 7: Table Of Contents

    Product Description CHAPTER 1 Table of Contents FEATURES 1.2 SPECIFICATIONS 1.3 MAIN COMPONENTS List Figures Figure 1-1. Exterior View of the Transparency......1-1...

  • Page 8: Product Description

    B81306* Service Manual 1.1 FEATURES This transparency unit is a high-quality device developed to enable EPSON Scanner owners to scan wide size(up to A4 or Letter size) transparency, slides and films in color or monochrome. Figure 1-1. Exterior View of the transparency unit 1.2 SPECIFICATIONS...

  • Page 9: Table Of Contents

    CHAPTER 2 Operating Principles Table of Contents 2.1 TRANSPARENCY MECHANISM OPERATION 2.1.1 Carriage Movement Mechanism.........2-1 2.2 CONTROL CIRCUIT 2.2.1 Circuit Operation Overview.

  • Page 10: Carriage Movement Mechanism

    Operating Principle 2.1 TRANSPARENCY MECHANISM OPERATION This section describe the transparency mechanism and explains it works. 2.1.1 Carriage Movement Mechanism transp arency method is the carriage of light source movement method. The carriage movement mechanism consists of lamp carriage assembly, carriage motor assembly, gear/lead screw, roller and carnage home position sensor.

  • Page 11: Control Circuit

    B81308* Service Manual Operating Principle 2.2 CONTROL CIRCUIT This section describes the main components and explains how the board work. 2.2.1 Circuit Operation Overview The control circuit consists of the main control circuit board and the invertor circuit board. The main circuit board drives the carriage motor.
  • Page 12 CHAPTER 3 Disassembly and Assembly Table of Contents 3.1 OVERVIEW 3.1.1 Disassembly Precautions........3-1 3.1.2 3.1.3 Service ChecksAfterRepair ........3-2 3.1.4 Specificationsfor Screws.

  • Page 13: Disassembly Precautions

    Disassembly and Assembly OVERVIEW This section describes various points to note when disassembling and assembling the transparency unit. 3.1.1 Disassembly Precautions Follow the precautions below when disassembling the transparency unit. Before dkassem bling or assembling the transparency unit, discomect the power supply cable of scanner from the AC power socket and remove it from scanner.

  • Page 14: Service Checksafterrepair

    Disassemble and Assemblv 3.1.3 Service Checks After Repair Before returning the transparency unit after service, use the checklist in Table 3-3, which provides a record to make ~ervicing &d shipping more efficient. Table 3-3. Inspection Check list for Repaired Printer Is Check Required? Component Item to Check...

  • Page 15: Disassembly And Assembly

    3.2 DISASSEMBLY AND ASSEMBLY This section describes the procedures for disassembling and assembling the main components of the transparency unit. When the procedure for installing a component is simply the reverse of the procedure for removing the component, no description of the installation is given. Any pornts of special concern follow the description of the procedure.

  • Page 16: Removing The Housing, Lower

    B81306* Service Manual Disassembly and Assembly 3.2.1 Removing the HOUSING, LOWER Remove the 4 CBB (M4x 10) screws and 2 CBS (M3 x 8) attaching the HOUSING,LOWER to 2. Remove the HOUSING,LOWER. Figure 3-2. Removing the HOUSING, LOWER...

  • Page 17: Removing The Carriage Assy

    3.2.2 Removing the CARRIAGE ASSY. 1. Removing the HOUSING,LOWER. (see Section 3.21) 2. Remove the CABLE,CR attaching to the FRAME COVER of HOUSING,UPPER 3. Remove the 2 CBB (M4 x 12) screws attaching the HOLDEF&UW1’ FRONT and REAR of the CARRIAGE ASSY.

  • Page 18: Removing The Board Assy.,Main

    Disassembly and Assembly 3.2.3 Removing the BOARD ASSY.,MAIN 1. Removing the HOUSING,LOWER. (see Section 3.2.1) 2. Removing the CARRIAGE ASSY. (see Section 3.2.2) 3. Remove the4CBB (M4 x 12) screws attaching the HOLDER ASSY. to HOUSING,UPPER. And remove the HOLDER ASSY. 4.

  • Page 19: Disassembly Carriage Assy

    3.2.4 Disassembly the CARRIAGE ASSY. 3.2.4.1 Removing the CARRIAGE MOTOR Removing the HOUSING,LOWER. (see Section 3.2.1) Removing the CARRIAGE ASSY. (see Section 3.2.2) Release the wire harness of the CARRJA GE MOTOR from the hook of the FRAME ASSY.,BASE. Remove the 2 CBS (IU3 x 6) screws attaching the C.ARRL4GE MOTOR to FMME ASSY.,BASE. And remove the MOTOR.

  • Page 20: Removing The Board Assy.,Invertor

    Disassembly and Assembly 3.2.4.2 Removing the BOARD ASSY.,INVERTOR Remove the CARRIAGE ASSY. (see %&on 3.2.2) 2. Removing the 2 CBS (M3 x6) screws attaching the COVER,CRto FR4ME ASSY.,BASE and remove COVER,CR. 3. Disconnect the comector of LAMP ASSY. from the BOARD ASSY.,INVERTOR and remove LAMP ASSY.

  • Page 21: Removing The Combination Gear,22.6,69.3

    Disassembly and Assembly B81 306” Service Manual 3.2.4.3 Removing COMBINATION GEAR,22.2,69.3 Remove the CARRIAGE ASSY. (see Section 3.2.2) Removing the HOLDER,SHAFT,FRONT from SHAFT,CR,GUIDE, and pull off the Removing the COVER,CR. (see Section 3.2.4.2) Disconnect the connector of LAMP ASSY. from the BOARD ASSY.,INVERTOR and remove LAMP ASSY.
  • Page 22 CHAPTER 4 Adjustments The transparency unit is not need any adjustment.

  • Page 23: Table Of Contents

    CHAPTER 5 Troubleshooting Table of Contents 5.1 TROUBLESHOOTING List of Table Table 5-1. Symptom and Problem in Scanner Indicator ....5-1 Table 5-2. Scanner indicates no error but no image data....5-1...
  • Page 24 Traubleshooting B81306* Service Manual TROUBLESHOOTING When a trouble occurs, YOU can distinwish the defective unit by referring the symptoms of the defect that indicated in ~canner indica~or. The table below lists the symptom of certain defects, and you can easily identify what the problem. Table 5-1.
  • Page 25 CHAPTER 6 Maintenance Table of Contents 6.1 PREVENTIVE MAINTENANCE 6.2 APPLYING LUBRICATION List of Figures Figure 6-1. Lubrication Points........6-1 List of Tables Table 6-1.

  • Page 26: Preventive Maintenance

    6.2 APPLYING LUBRICATION EPSON recommends that the transparency unit be lubricated at the points illustrated in Figure 6-1. Table 6-2 lists each point along with its recommended lubricant. The recommended lubricants are G-42, it have been tested extensively and found to comply with the needs of this transparency unit.
  • Page 27 Appendix Table of Contents List of Figures Figure A-1. Cable Connections ........Figure A-2.
  • Page 28 Appendix A.1 CONNECTOR SUMMARY Figure A-1 illustrates how the primary components are comected. Table A-1 summarizes the functions and sizes of the connectors. B81306* MAIN Board CARRIAGE ASSY. CARRIAGE MOTOR I Figure A-1. Cable Connections Table A-1. Connector Summary Function Pins Board Connector...
  • Page 29 Appendix B81306* Setvice Manual Table A-3. Connector Pin Assignments - CN2 Signal Name Function Ground Table A-4. Connector Pin Assignments – CN3 Signal Name Function Cover Open Signal Ground Table A-5. Connector Pin Assignments - CN4 Signal Name Function Ground Ground Green Lamp Control Red Lamp Control...
  • Page 30 Appendix A.2 CIRCUIT DIAGRAMS I IJJ_jJ_ – 0 Figure A-2. B81306* MAIN Circuit Diagram...
  • Page 31 Appendix A.3 CIRCUIT BOARD COMPONENT LAYOUT I i - l 2 0 1 5 9 8 7 Figure A-3. B81306* MAIN Component Layout...
  • Page 32 Appendix A.4 EXPLODED DIAGRAM Figure A-4. Exploded Diagram (1)
  • Page 33 Appendix / “ . t-------m / ’/’ / ‘\ Figure A-5. Exploded Diagram (2)
  • Page 34 Appendix B81306* Service Manual Table A-6. Part No. Reference Table Ref. No. Description Description BOARD ASSY.,MAIN 330 I HARNESS HARNESS HARNESS HOUSING, UPPER COVER, HOUSING 802 I SCALLOP HOUSING, LOWER FOOT SHIELD PLATE,FFC DOUBLE SIDE TAPE SIDE TAPE DOUBLE HOLDER, SHAFT, FRONT SHAFT, CR,GUIDE HOLDER, SHA~,REAR SHIELD PLATE...
  • Page 35 EPSON OVERSEAS MARKETING LOCATIONS EPSON AMERICA, INC. EPSON DEUTSCHLAND GmbH 20770 Madrona Avenue, 2842 Torrance, CA 90509-2842 Phone: 0211-56030 Phone: (800) 922-8911 Fax: 0211-504-7787 Fax: (310) 782-5220 EPSON UK LTD. EPSON FRANCE S.A. Campus 100, Maylands Avenue, 68 bis, rue Marjolin 92300, Hemel Hempstead, Herts.

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