Engine Flicker Communication Failure; Duplex Controller Card Assembly Type Failure - Lexmark X850e Service Manual

980.05 Engine flicker communication failure

Step
1 Perform a POR.
Does the error occur when the power is turned off/on?
2 Turn the printer off for 60 seconds.
Does the error occur when the power is turned off/on again?

997.00 Duplex controller card assembly type failure

Step
1 Check the duplex unit for proper installation.
Remove duplex unit assembly, and reinstall it.
Perform a two sided print test.
Does the error still occur?
2 Perform a 2 sided print test.
Does the error still occur?
3 Perform a 2 sided print test.
Does the error still occur?
Check
Check
Yes
Go to step 2. Perform several
print tests.
If the problem
remains, go to
step 2.
Replace the Problem solved.
printer engine card
assembly.
Go to "Printer
engine card
assembly
removal" on
page 4-117.
Yes
Go to step 2. Problem solved.
Replace the duplex Problem solved.
controller card
assembly.
Go to "Duplex
controller card
assembly removal"
on page 4-304.
Go to step 3.
Replace the printer Problem solved.
engine card
assembly.
Go to "Printer
engine card
assembly removal"
on page 4-117.
Diagnostic information
7500-XXX
No
No
2-179