Lexmark X940e Service Manual page 209

Step
4 Check the inverter gate condition.
Is the inverter gate free of damage and warpage, and does
it move smoothly?
5 Check the sensor (ADF pre registration) for proper
operation.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF pre registration.
Does the display on the operator panel, change every time
the sensing area of the above sensor is interrupted or
blocked?
6 Check the sensor (ADF pre-registration) for proper
connection.
Is the above component properly connected?
7 Check the ADF registration motor for proper operation.
Caution: When performing motor tests,
ensure that all cover and door interlock
switches are overridden.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch ADF registration drv mtr.
5. Touch Forward or reverse.
Does the above component operate properly?
8 Check the ADF registration motor for proper connection.
Is the above component properly connected?
Check Yes
Go to step 5. Replace the
inverter gate.
Go to
gate removal" on
page
Go to step 7. Go to step 6.
Replace the Replace the
sensor (ADF pre- connection.
registration).
Go to "Sensor
(ADF pre-
registration)
removal" on
page 4-147.
Go to step 9. Go to step 8.
Replace the ADF Replace the
registration motor. connection.
Go to "ADF
registration
motor removal"
on page 4-156.
Diagnostic information
7510-XXX
No
"Inverter
4-149.
2-95