Control panel removal (MX71x)
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 268.
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 toner supply cartridge.
2 Remove the imaging unit.
3 Remove the left cover. See “Left cover removal (MX71x)” on page 301.
4 Remove the right cover. See “Right cover removal (MX71x)” on page 311.
5 Open the rear door.
6 Remove the upper redrive. See “Upper redrive removal” on page 363.
7 Remove the ADF/scanner assembly. See “ADF/scanner assembly removal” on page 445.
8 Remove the sensor (standard bin full). See “Sensor (standard bin full) removal” on page 356.
9 Remove the standard bin cover. See “Standard bin cover removal (MX71x)” on page 357.
10 Raise the control panel to its uppermost position.
11 Remove the control panel left bezel. See the “Control panel left bezel removal (MX71x)” on page 429.
12 Disconnect and remove the two cables (A) from the frame.
Note: The cables will remain attached to the control panel.
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