Operator Panel Service Checks; One Or More Operator Panel Buttons Fail - Lexmark X548 Series Service Manual

Operator panel service checks

Warning: 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 will be rendered inoperable:
Operator panel assembly
•
RIP board
•
Warning: Never install and remove components listed above as a method of troubleshooting components.
Once a component has been installed in a printer, and the printer is powered on, it cannot be
used in another printer. It must be returned to the manufacturer.

One or more operator panel buttons fail

Step Questions / actions
Check the cable connection between the RIP
1
and the UICC, and check the connection from
the UICC to the display.
Are the cables properly connected?
Reconnect the cables. POR the device into
2
Diagnostics mode, and perform the button test.
See
"Button Test" on page
Do any of the buttons fail the test?
Using a multimeter, check the cable
3
connecting operator panel to the RIP board for
continuity.
Is there continuity?
Replace the UICC cable. See
4
controller card cable removal" on
page 4-112.
POR the device into Diagnostics mode, and
perform the button test.
Do any of the buttons fail the test?
Replace the UICC. See
5
controller card removal" on page
POR the MFP into Diagnostics mode, and
perform the button test.
Do any of the buttons fail the test?
Replace the RIP board. See
6
removal" on page
POR the device into Diagnostics mode, and
perform the button test.
Do any of the buttons fail the test?
3-17.
"User interface
"User interface
4-113.
"RIP board
4-19.
Yes
Go to step 3.
Go to step 3.
Go to step 5.
Go to step 5.
Go to step 6.
Contact your next level of
support.
7525-63x
No
Go to step 2.
Problem resolved.
Go to step 4.
Problem resolved.
Problem resolved.
Problem resolved.
Diagnostic information
2-41
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