Lexmark X746de - ADF Cover Open Service Check

Diagnostic information 2-141
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ADF cover open service check
Step Questions / actions Yes No
1 1. Open the ADF cover.
2. Check the ADF cover sensor flag for any
damage.
Is the flag damaged?
Replace the flag. See
“ADF closed cover flag
removal” on page 4-233.
Go to step 2.
2
1. Check if the ADF cover can close
properly.
2. Check for damages and obstruction.
3. Check the ADF top cover latch for any
damage.
Is the ADF cover damaged?
Replace the scanner front
cover assembly. See
“Scanner front cover
removal” on page 4-223
Go to step 3.
3
1. Check the cable connection on the system
board J1,J3 and J1,J6 on the MDC card
for proper connection.
2. Reseat cable.
Does the error clear?
Problem resolved. Go to step 4.
4
Check for damages, pinch points and bends
on the cable.
Is the cable free of damage?
Go to step 5. Replace either of the
following depending on
what cable has damaged:
• Scanner to system
board flat cable.
• Scanner to system
board cable.
5
1. Reseat all cables on the MDC card.
2. Check the condition of the cable
connectors.
Does this fix the problem?
Problem resolved. Go to step 6.
6
Isolate the problem and replace the ADF
assembly. See “ADF removal (entire)” on
page 4-228.
Does this fix the problem?
Go to step 7. Go to step 8.
7
1. Isolate the components inside the ADF
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?
Problem resolved.
Replace the bad part.
Go back to step 1.
8
Replace the MDC.
Does this fix the problem?
Problem resolved. Go to step 9.
9
Replace the ADF scanner Assembly.
Does this fix the problem?
Problem resolved. Replace the system board.
See “System board
removal” on page 4-157.