Duplex Controller Card Assembly Communication Failure; Engine Flicker Communication Failure - Lexmark X95x series Service Manual

980.04 Duplex controller card assembly communication failure

Step Action and questions
Check the duplex unit for proper
1
installation.
Remove the duplex unit
assembly, and reinstall it.
Perform a 2-sided print test.
Does the error still occur?
Check the duplex controller card
2
assembly and printer engine card
assembly for proper connection.
Are the connections on the
duplex controller card
assembly and the connector
P417 on the printer engine card
assembly connected?
Perform a 2-sided print test.
3
Does the error still occur?
POR the machine, and perform a
4
print test.
Does the error continue?
POR the machine, and perform a
5
print test.
Does the error continue?

980.05 Engine flicker communication failure

Step Action and questions
Perform a POR.
1
Does the error occur when the
power is turned off/on?
POR the machine, and perform a
2
print test.
Does the error continue?
Yes
Go to step 2.
Go to step 3.
Replace the printer left duplex
door assembly.
Go to
"Printer left duplex door
assembly removal" on
page 4-142.
Go to step 4.
Replace the upper printer engine
PCBA.
Go to
"Upper printer engine
PCBA removal" on page 4-186.
Go to step 5.
Replace the lower printer engine
PCBA.
Go to
"Lower engine PCBA
removal" on page 4-104.
Yes
Go to step 2.
Replace the upper printer engine
PCBA.
Go to
"Upper printer engine
PCBA removal" on page 4-186.
If the error remains, then go to
step 3.
7558-xxx
No
Problem solved.
Replace the connection.
Problem solved.
Problem resolved
Problem resolved
No
Perform several print tests.
If the problem remains, then go to
step 2.
Problem resolved
Diagnostic information
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