Lexmark X746de Service Manual page 184

7526
Step Questions / actions
1. Check the cable connection on the system
3
board J1,J3 and J1,J6 on the MDC card
for proper connection.
2. Reseat cable.
Does the error clear?
Check for damages, pinch points and bends
4
on the cable.
Is the cable free of damage?
1. Reseat all cables on the MDC card.
5
2. Check the condition of the cable
connectors.
Does this fix the problem?
Isolate the problem and replace the ADF
6
assembly. See
"ADF removal (entire)" on
page 4-237.
Does this fix the problem?
1. Isolate the components inside the ADF
7
assembly.
2. Replace the following components one by
one, and perform a POR in between.
- ADF front case assembly
- ADF skew card
- ADF cable
- Scanner ICC card
Does one of these replaced parts fixed the
problem?
Replace the MDC.
8
Does this fix the problem?
Replace the ADF scanner Assembly.
9
Does this fix the problem?
Service Manual
2-144
Yes
Problem resolved.
Go to step 5.
Problem resolved.
Go to step 7.
Problem resolved.
Replace the bad part.
Problem resolved.
Problem resolved.
No
Go to step 4.
Replace either of the
following depending on
what cable has damaged:
• Scanner to system
board flat cable.
• Scanner to system
board cable.
Go to step 6.
Go to step 8.
Go back to step 1.
Go to step 9.
Replace the system board.
See
"System board
removal" on page 4-165.
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