Controller Board Removal - Lexmark MS81x Service Manual

Controller board removal

Note: If you are replacing the controller board, retain the flash card from the original controller board so that you
can use it with the replacement controller board.
Warning—Potential Damage: When replacing the control panel, control panel board, or controller board, replace
only one component at a time. Replace the required component and perform a POR before replacing a second
component. If this procedure is not followed, the printer will be rendered inoperable. Never replace both the control
panel and the controller board without a POR after installing each one or the printer will be rendered inoperable.
Never install or remove these components as a method of troubleshooting while operating in normal user mode.
See "Controller board/control panel replacement" on page
Warning—Potential Damage: When a component has been installed in a machine and has been powered up in
normal user mode, it cannot be used in another machine; it must be returned to the manufacturer. The machine
must be powered up in Diagnostic mode or the controller board, control panel boards, or control panel will become
locked.
CAUTION—POTENTIAL INJURY: This product contains a lithium battery. There is a risk of explosion if the battery
is replaced with an incorrect type. Discard used batteries according to the battery manufacturer's instructions
and local regulations.
1
Remove the right cover. See
2
Remove the rear lower cover. See
3
Remove the LVPS. See
4
Remove the left cover. See
5
Remove the controller board access shield. See
6
Disconnect all cables from the controller board.
7
Remove the six screws (B) securing the controller board to the machine.
"Right cover removal" on page
"Rear lower cover removal" on page
"LVPS removal" on page
"Left cover removal" on page
"Controller board access shield removal" on page
Repair information
256.
283.
280.
366.
277.
349
4063
351.