Lexmark MX71 Series Repair Manual page 121

Installation warning: When replacing the control panel, ensure that all cables are properly reconnected.
Control panel removal (MX81x)
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.
1
Remove the controller board access cover. See
2
Remove the rear door. See
3
Remove the left cover. See
4
Open the front door.
5
Open the cartridge door.
6
Remove the column left front cover. See
7
Remove the left scanner cover. See
8
Remove the screw (A) securing the front scanner cover to the machine.
"Controller board access cover removal" on page
"Rear door removal" on page
"Left cover removal (MX81x)" on page
"Column left front cover removal (MX81x)" on page
"Flatbed scanner left cover removal topic" on page
Repair information
372.
549.
418.
491
7463
423.
414.
633.