Lexmark 5056 - Manual (Page 3)

4-2 Service Manual
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.