Lexmark 1020 manual EOF and Home Position Sensors Test

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4078-00X

EOF and Home Position Sensors Test

This test allows the servicer to test the function of the End-of-Form and Home Position sensors.

To run the test:

1.With the printer off and the End-of-Form Flag out of the sensor, press and hold the following buttons while turning the printer on:

2.Paper Feed

3.Install Print Cartridge

After five seconds, release the buttons to begin the test.

The Busy light goes on and off as the End-of-Form flag is moved into and out of the End-of-Form sensor.

The Power light goes on and off as the Carrier flag is moved into and out of the Home Position sensor.

Diagnostic Aids 3-2

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Contents 4078-00X 4078-00X Contents Connector Locations Preface Safety InformationSicherheitshinweise Consignes de SécuritéNorme di sicurezza Pautas de Seguridad SikkerhedsoplysningerInformações de Segurança Chinese Safety Information Korean Safety Information Power Consumption Maintenance ApproachGeneral Information 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 InformationAdjustments Removal ProceduresReleasing Plastic Latches Access Cover Removal Base Assembly RemovalCarrier Belt Removal Carrier Home Sensor Removal Carrier Frame Assembly RemovalCarrier Transport Motor Removal Drive Train Assembly RemovalGutter Pad Removal Front Cover RemovalMaintenance Station Assembly Removal Maintenance Wiper and Cap RemovalLarge Feed Roll Removal Mid Frame Assembly Removal Power Supply RemovalPaper Feed Motor 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