Lexmark MX71x Service Manual page 143

Action
Step 3
Check the ADF pick roller for wear or gear damage.
Is the ADF pick roller assembly free of excess wear or gear damage?
Step 4
Check the ADF feed belt for wear or gear damage.
Is the ADF feed belt assembly free of excess wear or gear damage?
Step 5
Check the ADF separator roller for wear or gear damage.
Is the ADF feed belt assembly free of excess wear or gear damage?
Step 6
Check the sensor (ADF pick) for proper operation.
a
Enter the Diagnostics Menu.
b
Touch SCANNER TESTS.
c
Touch Sensor Tests.
d
Observe the line "sensor (ADF pick)."
Does the display on the operator panel change every time the sensing
area of the sensor is interrupted or blocked?
Step 7
Check the sensor (ADF pick) for proper connection.
Is the component properly connected?
Step 8
Check the ADF pick motor for proper operation:
a
Enter the Diagnostics Menu.
b
Touch Motor Tests.
c
Touch Pick Motor.
d
Perform the test.
Does the ADF pick motor operate properly?
Step 9
Check the ADF pick motor for proper connection.
Is the component properly connected?
Step 10
Place an undamaged document in the ADF, and perform an ADF test.
Does the error remain?
Yes
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 8.
Replace the sensor
(ADF pick). Go to
"Sensor (ADF pick)
removal" on page
622.
Go to step 10.
Replace the ADF rear
side drive parts pack.
Replace the ADF
controller board.
Diagnostic information
143
7463
No
Clean or replace the
ADF pick roller. Go to
"ADF pick roller
removal" on page
596.
Clean or replace the
ADF feed belt. Go to
"ADF feed belt
removal" on page
584.
Clean or replace the
ADF separator roller.
Go to "ADF separator
roller removal" on
page 602.
Go to step 7.
Replace the connection
Go to step 9.
Replace the connection
The problem is solved.