Lexmark 5056 warranty Printhead controller board removal

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5056-XXX

Printhead controller board removal

1.Remove the top cover, and then remove the 20 printhead controller board connectors.

2.Remove the six screws from the printhead controller board and remove the board.

Note: When replacing the board, be sure to return the four EEPROMs on the former board to the same positions on the new board.

4-38Service Manual

Image 39

Contents Lexmark Repair Catalog Handling ESD-sensitive parts Service precautionsHandling printed circuit boards RIP board/operator panel replacement5056-XXX Adjustments and procedures following parts replacement High-capacity paper feed timing belt adjustmentTransfer belt Cover, top removal RemovalsFront door / operator panel removal Cover, front left removal Cover, rear removal Cover, solenoid removalCover, left side removal Cover, right side removal Cover, RIP board removal Belt up/down clutch removal Tray, paper exit removalCassette guide removal CK1 daughter board removalCK2 daughter board removal Paper tray lift motor removal Connector, duplex unit removalDrive gear unit sensor assembly removal Electronic box removal Front cover open switch actuator removal Face up paper exit assembly removalFuser removal Gear cover removal/Multipurpose feeder frame assembly LED printhead removal High voltage power supply board Hvps removalEraser removal Lock handle assembly removal Main drive unit removal 5056-XXX Main unit fan removal Motor drive board removalMultipurpose feeder paper present sensor removal Paper feed unit removal Multipurpose feeder tray removal5056-XXX Paper-feed rollers removal Paperpath maintenancePaper carrying frame removal / roll removal Registration sensor removal Registration frame Registration clutch removalRelay roller removal Face down exit roll removal Face down guide assembly removal5056-XXX 5056-XXX Power supply 1 removal Power supply 2 removal Printer controller removal Power switch removalPrinthead controller board removal RIP box removal Left slide rail removalStay arm removal Sensor board removalSub-frame removal Sub frame F1, sub frame F2 removal Temperature/humidity sensor removalTransfer belt removal Top unit removal5056-XXX 5056-XXX 5056-XXX Upper fan removal Turn guide cover sensor removal5056-XXX Turn guide door removal Expansion feeder controller board removalSize sensor board removal Stepper motor removal Paper feed assembly removal Expansion feeder turn guide door sensor assembly removal Duplex unit separation removal Duplex removalsDuplex timing belt removal Duplex unit removalDuplex feed roller and solenoid removal Duplex pressure roller and solenoid removalDuplex side fence motor assembly/side fence removal Duplex paper carrying motor removal HCF covers removal High-capacity feeder HCF removalsHCF pickup solenoid removal HCF call roller, paper feed roller, reverse roller removal5056-XXX HCF tray motor removal HCF paper level sensor removal HCF power supply removalExternal covers removals Finisher removalsFinisher control board removal Elevator motor removal Feed motor assembly removalHole punch removal Inverter paper exit roller removal Inverter paper exit discharge brush removalJogging unit removal Path select gate removal Patting roller removal Patting Roller Power supply removal Registration roller clutch removal Registration roller removalStaple unit removal Stack area discharge brush removalStraight paper exit roller removal Straight paper exit discharge brush removal5056-XXX Timing belts 1 and 2 removal Tractor belt removal Tractor drive motor assembly removal