Lexmark X850e Service Manual page 243

Step
2 Check the sensor (ADF width APS 1) for connection.
Is the above sensor connected properly?
3 Check the sensor (ADF width APS 2) for operation.
Perform the sensor (ADF width APS 2) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF width APS 2.
Operate the actuator of the sensor (ADF width APS 2).
Does the display on the operator panel change every time the
sensing area of the above sensor is blocked?
4 Check the sensor (ADF width APS 2) for connection.
Is the above sensor connected properly?
5 Check the sensor (ADF width APS 3) for operation.
Perform the sensor (ADF width APS 3) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF width APS 3.
Operate the actuator of the sensor (ADF width APS 3).
Does the display on the operator panel change every time the
sensing area of the above sensor is blocked?
6 Check the sensor (ADF width APS 3) for connection.
Is the above sensor connected properly?
7 Place an undamaged document in the ADF, and perform a
ADF test.
Does the error remain?
Check Yes
Replace the Replace the
sensor (ADF connection.
width APS 1).
Go to "Sensor
(ADF width
APS 1)" on
page 4-184.
Go to step 6. Go to step 5.
Replace the Replace the
sensor (ADF connection.
width APS 2).
"Sensor
Go to
(ADF width
APS 2)" on
page 4-185.
Go to step 8. Go to step 7.
Replace the Replace the
sensor (ADF connection.
width APS 3).
Go to "Sensor
(ADF width
APS 3)" on
page 4-186.
Replace the Go to step 8.
ADF controller
card assembly.
Go to "ADF
controller card
assembly
removal" on
page 4-167.
Diagnostic information
7500-XXX
No
2-145