Operator Panel Service Check; One Or More Operator Panel Buttons Fail; Operator Panel Display Blank, Five Beeps, And Led Off - Lexmark C522 Service Manual

Operator panel service check

Warning: When replacing any one of the following components:
•
Operator panel assembly
•
System card
•
Printhead assembly
Only replace one component at a time. Replace the required component, and perform a POR before
replacing a second component listed above. If this procedure is not followed, the printer will be
rendered inoperable.
Warning: Never install and remove components listed above as a method of troubleshooting
components. Once a component has been installed in a printer, it cannot be used in another
printer. It must be returned to the manufacturer.

One or more operator panel buttons fail

Step Questions / actions
1 Run the Button Test. See
page 3-11 in Diagnostics mode.
Did any of the buttons fail the test?
2 Disconnect the operator panel assembly cable
from JOPP1 on the system card, and measure
the voltage on pin 6 and ground.
Does the voltage measure approximately
+3.3 V dc?

Operator panel display blank, five beeps, and LED off

Service tip: The printer has detected a problem with the system card, the operator panel assembly cable (part of
the top cover access assembly), or the operator panel assembly if POST does not complete. The printer emits
five beeps, and sticks in a continuous pattern until the printer is turned off.
Step Questions / actions
1 Is the operator panel assembly cable properly
installed at system card JOPP1 and at the
operator panel assembly?
2 Measure the voltage between JOPP1 pin 2
and ground on the system card.
Is the voltage approximately +5 V dc?
3 Check continuity of the operator panel
assembly cable.
Is there continuity?
"Button Test" on Replace the operator panel
assembly. See
panel assembly removal"
on page
Replace the operator panel
assembly. See
panel assembly removal"
on page
not fix the problem, replace
the top cover access
assembly. See
cover assembly removal—
model C52x only" on
page 4-28
cover assembly removal—
model C53x only" on
page
Go to step 2.
Go to step 3.
Replace the operator panel
assembly. See
panel assembly removal"
on page
Yes
Go to step 2.
"Operator
4-23.
Replace the system card.
"Operator See
removal" on page
4-23. If this does
"Top access
or "Top access
4-32.
Yes
Reinstall the cable.
Replace the system card.
See
removal" on page
Replace the top cover
"Operator access assembly. See
access cover assembly
4-23. removal—model C52x
only" on page 4-28
access cover assembly
removal—model C53x
only" on page
Diagnostic information
5022-xxx
No
"System card
4-79.
No
"System card
4-79.
"Top
or "Top
4-32.
2-53