Lexmark 4076-0XX manual Top Cover Removal

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Top Cover Removal

4076-0XX

Top Cover Removal

1.Unplug the power cord and the interface cable from the back of the printer.

2.Pull up the tab latch on the print cartridge storage unit and remove the unit from the machine.

3.Unlatch the auto sheet feed left cover by pushing it up from the bottom, then slide it off the machine.

4.Turn the machine around to remove the rear cover. Remove the screw and washer from the rear cover. Place a screwdriver in the left slot [A] and push the latch down. At the same time push the right latch [A] down.

A

A

5.Pull the rear cover out until the latches clear the top cover, then lift the cover off the base.

6.Turn the machine to the front and pull the paper tray forward.

7.Pull the top cover forward until it stops. Be sure the paper release lever clears the slot in the top cover. The operator panel cable is still connected, so carefully lift the cover off the base.

8.Set the cover down in front of the machine.

9.Pull the operator panel cable from the connector on the system board.

NOTE: When you reinstall the top cover, pull out the exit tray to pre- vent it from being trapped under the cover.

Repair Information 47

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Contents 4076-0XX •Table of Contents •Start Diagnostics•Safety and Notices •Trademarks •Index •Manuals MenuAll Rights Reserved 4076-0XXSecond Edition May, Copyright Lexmark International, Inc. 1994,Contents Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4076-0XX How To Use This Parts CatalogFederal Communications Commission FCC Statement Notices and Safety InformationElectronic Emission Notices The United Kingdom Telecommunications Act Industry Canada Compliance StatementAvis de conformité aux normes d’Industrie Canada viii Safety InformationJapanese VCCI Notice Norme di sicurezza SicherheitshinweiseConsignes de Sécurité Informació de Seguretat Pautas de SeguridadInformações de Segurança Chinese Safety Information Korean Safety Information • • • • Power ConsumptionGeneral Information Options Maintenance Approach• • • Abbreviations Unique Tools Required For Service1.Run the “Test Page” on page Diagnostic InformationStart Action Error Indicator TableError Alternating Light PatternService Check” on page Go to the “Maintenance StationPower-on-self-testPost Sequence Symptom POST Symptom TableMaintenance Station Problems Symptom TablesCarrier Transport Problems Communications ProblemPrint Quality Problems 4076-0XX Paper Feed ProblemsPower Problems 4076-0XX SIMM Problem Service ChecksEnvelope Feed Service Check First Print Line Service CheckMaintenance Station Service Check Operator Panel Service Check • • • • • Paper Feed Service CheckPaper Feed Motor ACTION Paper Path Service Check Run the “Serial Adapter Test” on Parallel Port Service Checkcan print. Run the “Parallel Port Test” Power Service Check Perform the “Purge Test” on page Print Quality Service CheckAlignment Adjustment” on page “Maintenance Station Service Check”FRUU or PROCEDURE Simm Service CheckTransport Service Check Perform the “Encoder Sensor Test” on the “Maintenance Station ServicePrint Fonts Test Diagnostic AidsDemo 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 RemovalCarrier Removal ASF Right And Left Edge Guide Assemblies RemovalASF Paper Load Lever Removal Carrier Transport Motor Removal Carrier Transport Belt RemovalCarrier Guide Removal Encoder Strip Removal Carrier Transport Motor Frame RemovalEprom Removal Exit Roller Assembly RemovalFeed Arm Assembly Removal End-of-formsFlag RemovalInside Idler Gears Removal Large Feed Roller Assembly RemovalLeft Side Frame Removal Operator Panel Removal Maintenance Drive And Rocker Assemblies RemovalMiddle Frame Removal Paper Guide Removal Outside Idler Gears RemovalPaper Ejectors Removal Paper Feed Motor RemovalPaper Release Lever Removal Power Supply RemovalPrint Head Cable Removal Right Side Frame Removal Star Roller Removal Small Feed Roller Assembly RemovalRubber Backer Removal System Board Removal Top Cover Removal Connector Names Connector LocationsSystem Board Connectors ConnectorCode Module Maintenance MotorFLASH/RAM SIMM Option • • • • • • • Preventive MaintenanceLubrication Specifications Parts Catalog How To Use This Parts Catalog4076-0XX Assembly 1: Covers 9 7 4 8 2 6 Description Asm.Part Units4076-0XX Assembly 2: Frames 7 2 3 4 5 1 6 Units 4076-0XX Assembly 3: Paper Feed 1 3 2 4 5 6 7 8 9 Units 4076-0XX Assembly 3: Paper Feed Cont Units 1 8 11 6 7 4076-0XX Assembly 4: Electronics 5 4 4 3 2 10 9Units 10 9 4076-0XX Assembly 4: Electronics Cont 5 4 4 3 2Units 10 11 4076-0XX Assembly 4 Electronics Cont 12 13 12 9Units 4076-0XX Assembly 5: Carrier Unit 2 6 3 4076-0XX Assembly 6: Carrier TransportUnits 1 14 9 4076-0XX Assembly 7: Auto Sheet Feed 6 310 13 12 2 5 8 4 7Units 4076-0XX Assembly 8: Maintenance Station 3 1 2 4 Units 4076-0XX Assembly 9: Options 1 Units Index Unique Tools