Strange Sound Generated (Adf); Strange Sound Generated (Flatbed); Scanner Failure - Lexmark 4036-307 Service Manual

4036-307, -308

Strange sound generated (ADF)

Step Action and Question
1 Is the paper correctly set in the document feeder?
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 (A).
Note: Remove the bottom plate to expose the cable.
See
information.
Is either end of the cable loose?
2 Does the A1 to scan cont cable have any visible
damage?
2-16
Service Manual
"Bottom plate removal" on page 4-35
Yes
Go to step 2
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
for more
Replace A1 to
scan cont cable
No
Properly position
paper in document
feeder
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