Lexmark 5056 warranty RIP board/operator panel replacement, Handling printed circuit boards

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5056-XXX

RIP board/operator panel replacement

Warning: If the operator panel and the RIP board are being replaced at the same time, replace the parts in this order to avoid damage to the machine.

1.Replace the RIP card first.

Note: Do not replace the new operator panel and RIP card in the machine at the same time.

2.After installing the new RIP card, and before installing the new operator panel, start the printer.

3.After the printer has completed startup, turn off the printer and replace the operator panel.

Note: If the operator panel display has failed, the printers’ startup cycle is complete when the driver motor and fans shut down, and the machine is quiet.

4.After installing the new operator panel, start the printer, and allow the printer to go through a complete startup cycle and the display to go to Ready.

5.If the problems persist, leave the new operator panel in the machine, place the old RIP card back in the machine, and start it up. After the machine startup, shut down the machine, and install the new RIP card. After installing the new RIP card, restart the machine, and let it go through the startup cycle.

After this procedure is completed successfully, there is no need to adjust any settings.

If the above procedure fails, you must contact the technical support center for further instructions.

Handling printed circuit boards

The following precautions must be observed when handling circuit boards with metal oxide semiconductor integrated circuits.

CAUTION: If you are removing the motor driver board or the low voltage power supply boards, ensure they are properly discharged before handling.

Transportation/storage

During transportation or when in storage, new circuit boards must not be indiscriminately removed from their protective conductive bags.

Do not store or place circuit boards in a location exposed to direct sunlight.

When it becomes absolutely necessary to remove a board from its conductive bag or case, always place it on its conductive mat in an area as free as possible from static electricity.

Do not touch pins of the integrated circuits with your bare hands.

Replacement:

Before you unplug connectors from the circuit boards, be sure the power cord has been unplugged from the power outlet.

When you remove a board from its conductive bag or case, do not touch the pins of the integrated circuits or the printed pattern. Place it in position by holding only the edges of the board.

Before you plug connectors into the board, be sure the power cord has been unplugged from the power outlet.

Inspection:

Avoid checking the integrated circuits directly with a multimeter; use connectors on the board.

Never create a closed circuit across integrated circuit pins with a metal tool.

When it is absolutely necessary to touch the integrated circuits and other electrical components on the board, be sure to ground your body.

4-2Service Manual

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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