Lexmark MX910de Service Manual page 117

Actions
Step 5
Check the sensor (ADF scan) for damage, and replace if necessary.
Does the problem remain?
Step 6
Enter the Diagnostics menu, and then navigate to:
SCANNER TESTS > Feed Test
Is the test successful?
Step 7
Observe the leading and trailing edge location of the paper along the paper
path while performing a feed test.
Does the leading edge of the paper reach the ADF scan glass area?
Step 8
Observe the motor (ADF scan) if it is working properly.
Does the motor run?
Step 9
a
Remove the ADF rear cover.
b
Reseat the ADF scan motor cable.
c
Check the motor cable for damage, and replace if necessary.
Does the problem remain?
Step 10
a
Make sure that the ADF scan motor belts have correct belt tension.
b
Check the motor gears and belts for wear or damage, and replace if
necessary.
Does the problem remain?
Step 11
Check the ADF scan roller 1 for wear or damage, and replace if necessary.
Does the problem remain?
Step 12
Observe the motor (CIS glass clean) if it is working properly.
Is the motor working properly?
Yes
Go to step 6.
Go to step 8.
Go to step 12.
Go to step 10.
Go to step 10.
Go to step 11.
Go to step 12.
Go to step 14.
Diagnostic information
117
7421
No
The problem is solved.
Go to step 7.
Go to step 8.
Go to step 9.
The problem is solved.
The problem is solved.
The problem is solved.
Go to step 13.