Controller board removal
CAUTION—SHOCK HAZARD: After disconnecting the high-voltage power cable from the controller board,
always check that the HVPS connection was not loosened. Make this check anytime you are working near the
HVPS cable.
Warning—Potential Damage: Observe all ESD precautions while handling electrostatic discharge sensitive parts. See
Handling ESD‑sensitive parts on page 4‑1.
Warning—Potential Damage: Replace one of the following components, and perform a POR before replacing a
second component. Never replace both of the components without performing a POR after installing each one, or
the printer may be rendered inoperable:
• UICC
• Controller board
Warning—Potential Damage: Never install and remove components listed above as a method of troubleshooting
components. Once one of these components has been installed in a printer, and the printer is powered on, the
component cannot be used in another printer. The component must be returned to the manufacturer.
1 Remove the rear cover. See “Rear cover removal” on page 307.
2 Remove the screw (A) securing the ground cable and USB ground contact on the controller board cage.
Installation note: Make sure to install the ground cable and USB ground contact on the controller board cage
after installing a new controller board.
3 Disconnect all cables from the controller board, and then remove the six screws (B).
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Repair information
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