Lexmark 1020 manual System Board Removal

Page 46

4078-00X

System Board Removal

1.Remove the front cover.

2.Remove the rear cover.

3.Remove the sheet feeder.

4.Unlock the two printhead cable connectors and disconnect the printhead cables from the system board.

5.Disconnect the other cables from the system board.

6.Remove the three screws securing the system board to the carrier frame and remove the system board. Note the routing of all the cables.

7.Remove the system board being careful not to damage the End- of-Form flag.

8.Set NVRAM to the country default on the replacement system board; see Chapter 3.

9.See “Print Quality Notice” on page 2-15 .

4-13

Image 46

Contents 4078-00X 4078-00X Contents Connector Locations Safety Information PrefaceConsignes de Sécurité SicherheitshinweiseNorme di sicurezza Sikkerhedsoplysninger Pautas de SeguridadInformações de Segurança Chinese Safety Information Korean Safety Information Maintenance Approach Power ConsumptionGeneral Information Unique Tools Required For Service AbbreviationsDiagnostic Information StartError Indicator Table Power-On Self Test Post SequencePost Symptom Table Symptom ActionSymptom Tables Carrier Transport Problems4078-00X Paper Feed Problems Service Checks Carrier Transport Service CheckEnvelope Feed Service Check Perform the EOF and Home Position SensorsMaintenance Station Service Check Paper Feed Service Check Also check for loose or worn motor gear Paper Path Service Check Home Position Sensors Test on page 3-2, toParallel Port Service Check Power Service CheckPrint Quality Service Check FRU / Function ActionMaintenance 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 Repair Information Handling ESD-Sensitive PartsRemoval Procedures AdjustmentsReleasing Plastic Latches Base Assembly Removal Access Cover RemovalCarrier Belt Removal Carrier Frame Assembly Removal Carrier Home Sensor RemovalDrive Train Assembly Removal Carrier Transport Motor RemovalFront Cover Removal Gutter Pad RemovalMaintenance Wiper and Cap Removal Maintenance Station Assembly RemovalLarge Feed Roll Removal Power Supply Removal Mid Frame Assembly RemovalPaper Feed Motor Removal Printhead Carrier Assembly Removal Rear Cover Removal Small Feed Roll Assembly Removal Sheet Feeder RemovalSmall Feed Roll Bracket Assembly Removal System Board Removal Connector Locations System Board Connectors Connector Connector Names Preventive Maintenance Lubrication SpecificationsHow To Use This Parts Catalog 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 Index PostEmea USA