Strange Sound Generated (Flatbed); Scanner Failure; Front Scan Module Output Level Error - Lexmark 4600 MFP Service Manual

Step Action and Question
2 Does the sound come from the pick roller assembly?
3 Does the sound come from the paper feed motor?

Strange sound generated (flatbed)

Step Action and Question
1 Inspect the carriage transport belt.
Is the belt damaged?
2 Is the rail dirty?

842.00 Scanner failure

Step Action and Question
1 Check the A1 to scan cont cable.
Is either end of the cable loose?
2 Does the A1 to scan cont cable have nay visible
damage?
843.00 Scanner failure
Step Action and Question
1 Check the flatbed motor cable.
Is either end of the cable loose?
2 Does the flatbed motor cable have any visible
damage?

844.00 Front scan module output level error

Step Action and questions
1 Check the flatbed lamp.
Is the lamp on brightly?
Is the flatbed lamp on dimly?
2
3 Is the flatbed CCD cable securely
connected?
Yes
Replace the pick
roller assembly
Replace the
paper feed motor
Yes
Replace the carriage
transport belt
Clean the rail with isopropyl
alcohol
Yes
Reseat A1 to
scan cont cable
Replace A1 to
scan cont cable
Yes
Reseat flatbed
motor cable
Replace flatbed
motor cable
Yes
Go to step 3
Replace flatbed inverter
board
Replace flatbed optical
unit
4036-307/308
No
Go to step 3
Replace the ADF
unit
No
Go to step 2
Replace the flatbed CCD
assembly
No
Go to step 2
Replace A1
board
No
Go to step 2
Replace flatbed
optical unit
No
Go to step 2
Replace flatbed lamp
Reset flatbed CCD
cable
2-15
Diagnostic information