Actions Yes No
Step 10
a Remove the ADF rear cover and locate the motor drive.
b Open the ADF top cover.
c Bypass the sensor (ADF top cover open) and observe if the ADF feed
drive gear rotates.
d Observe the motor (ADF feed) if it is working properly.
Does the motor run?
Got to step 12. Go to step 11.
Step 11
a Reseat the ADF feed motor cable.
b Check the motor cable for damage, and replace if necessary.
Does the problem remain?
Go to step 12. The problem is solved.
Step 12
a Make sure that the ADF feed belt has correct belt tension.
b Check the ADF feed gear and belt for wear or damage, and replace if
necessary.
Does the problem remain?
Go to step 13. The problem is solved.
Step 13
Replace the motor (ADF feed). See
“Motor (ADF feed) removal” on
page 433.
Does the problem remain?
Go to step 14. The problem is solved.
Step 14
Make sure that the blue screws and marked screws along the paper path
are tightened.
Does the problem remain?
Go to step 15. The problem is solved.
Step 15
Check the ADF controller board for damaged pins, and replace if
necessary. See
“ADF controller board removal” on page 396.
Note: Make sure to perform ADF scanner adjustment after replacing
the ADF controller board.
Does the problem remain?
Go to step 16. The problem is solved.
Step 16
a Make sure that the ADF CIS cable is properly installed.
b Check the cable for damage, and replace if necessary.
Does the problem remain?
Contact the next level
of support.
The problem is solved.
7421
Diagnostic information
114
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