Lexmark 1020 manual Diagnostic Information, Start

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4078-00X

2. Diagnostic Information

Use the error indicator table, symptom tables, service checks, and diagnostic aids in chapter 3, to determine the failing part.

Start

Service error indications show as a series of flashes of the Power On light. There is a pause between each series of flashes. If your machine has an error indication, locate the series of flashes in the “Error Indicator Table” on page 2-2and take the indicated action.

Unplug the machine to clear the error indicator.

If an error indicator appears, go to the error indicator table and take the indicated action for that error.

The printer also logs the last occurring error. If you think it may have an intermittent error, or the error indicator lights have been cleared, you can retrieve the error:

1.Run the “Test Page” on page 3-8 . The error is the last number to print on line five. Note the number.

2.Run “Initialize Error Log” on page 3-3 to clear the error (the error may not be the result of a current error).

3.Run the “Parallel Port Test” on page 3-4 . If no error appears, go to “Power-On Self Test (POST) Sequence” on page 2-2 .

If your machine does not have an error indicated, go to “Power-On Self Test (POST) Sequence” on page 2-2.

Diagnostic Information 2-1

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Contents 4078-00X 4078-00X Contents Connector Locations Preface Safety InformationNorme di sicurezza SicherheitshinweiseConsignes de Sécurité Informações de Segurança Pautas de SeguridadSikkerhedsoplysninger Chinese Safety Information Korean Safety Information General Information Power ConsumptionMaintenance Approach Abbreviations Unique Tools Required For ServiceStart Diagnostic InformationPower-On Self Test Post Sequence Error Indicator TableSymptom Action Post Symptom TableCarrier Transport Problems Symptom Tables4078-00X Paper Feed Problems Carrier Transport Service Check Service ChecksPerform the EOF and Home Position Sensors Envelope Feed Service CheckMaintenance Station Service Check Paper Feed Service Check Also check for loose or worn motor gear Home Position Sensors Test on page 3-2, to Paper Path Service CheckPower Service Check Parallel Port Service CheckFRU / Function Action Print Quality Service CheckMaintenance Station Service Check on Print Quality Notice Diagnostic Aids EOF and Home Position Sensors Test Initialize Error Log Parallel Port Test Print Nvram Contents Reset Nvram to Emea Defaults Reset Nvram to USA Defaults Test Handling ESD-Sensitive Parts Repair InformationReleasing Plastic Latches AdjustmentsRemoval Procedures Carrier Belt Removal Access Cover RemovalBase Assembly Removal Carrier Home Sensor Removal Carrier Frame Assembly RemovalCarrier Transport Motor Removal Drive Train Assembly RemovalGutter Pad Removal Front Cover RemovalLarge Feed Roll Removal Maintenance Station Assembly RemovalMaintenance Wiper and Cap Removal Paper Feed Motor Removal Mid Frame Assembly RemovalPower Supply Removal Printhead Carrier Assembly Removal Rear Cover Removal Sheet Feeder Removal Small Feed Roll Assembly RemovalSmall Feed Roll Bracket Assembly Removal System Board Removal Connector Locations System Board Connectors Connector Connector Names Lubrication Specifications Preventive MaintenanceParts Catalog How To Use This Parts CatalogAssembly 1 Covers Asm Part Units Description Index Number Assembly 2 Paper Feed / Carrier Transport / Maintenance See Print Quality Notice on Assembly 3 Electronics 11A5455 System Board with ROM Assembly 3 Electronics 4078-00X Assembly 4 Carrier 4078-00X Assembly 5 Sheet Feeder 4078-00X Post IndexEmea USA