Lexmark 4076-0XX manual End-of-formsFlag Removal, Exit Roller Assembly Removal, Eprom Removal

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4076-0XX

End-of-forms Flag Removal

1.Remove the top cover.

2.Remove the ASF.

3.Disconnect the print head cables from the system board. You may have to open the print head cable connectors on the system board first, then disconnect the cables

4.Disconnect connectors J4, J5, and J6 from the system board. 5. Remove the machine from the base. To do this, unlatch the 4 base frame latches. Lift the machine from the base and set it on its front with the bottom facing you.

5.Pivot the weighted end of the end-of-forms flag through the opening in the middle frame.

6.Lift the flag up and out of the machine.

Exit Roller Assembly Removal

1.Remove the top cover.

2.Remove the carrier transport frame.

3.Pivot the paper ejector pusher toward the front then pull it to remove the paper ejector from the shaft.

4.Remove the bushing from the left end of the exit shaft. To do this, pull the tab and rotate the bushing.

5.Slide the exit roller to the left and lift it out of the machine.

Eprom Removal

1.Remove the top cover.

2.Disconnect the print head cables from the system board. You may have to open the print head cable connectors on the system board first, then disconnect the cables.

3.Disconnect connectors J4, J5, and J6 from the system board.

4.Remove the machine from the base. To do this, push the frame latches out as you lift the machine from the base. Set the machine aside.

5.Gently pry the EPROM from the system board.

Feed Arm Assembly Removal

1.Remove the top cover.

2.Remove the auto sheet feed.

3.Remove the C-clip from the center of the large gear and remove the feed arm assembly.

Repair Information 37

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Contents •Safety and Notices •Trademarks •Index •Table of Contents •Start Diagnostics•Manuals Menu 4076-0XXSecond Edition May, 4076-0XXCopyright Lexmark International, Inc. 1994, All Rights ReservedContents Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4076-0XX How To Use This Parts CatalogElectronic Emission Notices Notices and Safety InformationFederal Communications Commission FCC Statement Avis de conformité aux normes d’Industrie Canada Industry Canada Compliance StatementThe United Kingdom Telecommunications Act Japanese VCCI Notice Safety Informationviii Consignes de Sécurité SicherheitshinweiseNorme di sicurezza Informações de Segurança Pautas de SeguridadInformació de Seguretat Chinese Safety Information Korean Safety Information General Information Power Consumption• • • • • • • Maintenance ApproachOptions Abbreviations Unique Tools Required For ServiceStart Diagnostic Information1.Run the “Test Page” on page Error Error Indicator TableAlternating Light Pattern ActionService Check” on page Go to the “Maintenance StationPower-on-self-testPost Sequence Symptom POST Symptom TableCarrier Transport Problems Symptom TablesCommunications Problem Maintenance Station ProblemsPower Problems 4076-0XX Paper Feed ProblemsPrint Quality Problems Envelope Feed Service Check Service ChecksFirst Print Line Service Check 4076-0XX SIMM ProblemMaintenance Station Service Check Operator Panel Service Check • • • • • Paper Feed Service CheckPaper Feed Motor Feed Arm Assembly Paper Path Service Check can print. Run the “Parallel Port Test” Parallel Port Service CheckRun the “Serial Adapter Test” on Power Service Check Perform the “Purge Test” on page Print Quality Service CheckAlignment Adjustment” on page “Maintenance Station Service Check”Transport Service Check Simm Service CheckFRUU or PROCEDURE Perform the “Encoder Sensor Test” on the “Maintenance Station ServiceDemo Test Diagnostic AidsPrint Fonts Test Print Nvram Purge TestPaper Sensor Test Test PageHex Print Encoder Sensor TestInitialize Nvram Parallel Port TestSerial Adapter Test Handling Esd-sensitiveParts Repair InformationBi-directionalAlignment Adjustment AdjustmentsReleasing Plastic Latches Removal ProceduresASF Envelope Buckler And Pick Roller Hub Removal Auto Sheet Feed ASF Assembly RemovalASF Paper Load Lever Removal ASF Right And Left Edge Guide Assemblies RemovalCarrier Removal Carrier Guide Removal Carrier Transport Belt RemovalCarrier Transport Motor Removal Encoder Strip Removal Carrier Transport Motor Frame RemovalFeed Arm Assembly Removal Exit Roller Assembly RemovalEnd-of-formsFlag Removal Eprom RemovalInside Idler Gears Removal Large Feed Roller Assembly RemovalLeft Side Frame Removal Middle Frame Removal Maintenance Drive And Rocker Assemblies RemovalOperator Panel Removal Paper Ejectors Removal Outside Idler Gears RemovalPaper Feed Motor Removal Paper Guide RemovalPaper Release Lever Removal Power Supply RemovalPrint Head Cable Removal Right Side Frame Removal Rubber Backer Removal Small Feed Roller Assembly RemovalStar Roller Removal System Board Removal Top Cover Removal System Board Connectors Connector LocationsConnector Connector NamesFLASH/RAM SIMM Option Maintenance MotorCode Module Lubrication Specifications Preventive Maintenance• • • • • • • Parts Catalog How To Use This Parts Catalog4076-0XX Assembly 1: Covers 9 7 4 8 2 6 Part Asm.Units Description4076-0XX Assembly 2: Frames 7 2 3 4 5 1 6 Asm. 4076-0XX Assembly 3: Paper Feed 1 3 2 4 5 6 7 8 9 Asm. 4076-0XX Assembly 3: Paper Feed Cont Asm. 1 8 11 6 7 4076-0XX Assembly 4: Electronics 5 4 4 3 2 10 9Asm. 10 9 4076-0XX Assembly 4: Electronics Cont 5 4 4 3 2Asm. 10 11 4076-0XX Assembly 4 Electronics Cont 12 13 12 9Asm. 4076-0XX Assembly 5: Carrier Unit 2 6 3 4076-0XX Assembly 6: Carrier TransportAsm. 10 13 12 2 5 4076-0XX Assembly 7: Auto Sheet Feed 6 38 4 7 1 14 9Asm. 4076-0XX Assembly 8: Maintenance Station 3 1 2 4 Asm. 4076-0XX Assembly 9: Options 1 Asm. Index Unique Tools