Lexmark X850e Service Manual page 210

7500-XXX
Step
4 Check the sensor (ADF inverter) for operation.
Perform the sensor (ADF inverter) test.
Open the ADF left cover assembly.
Remove the ADF separation roll guide assembly. Go to
"ADF separation roll guide assembly" on page
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF inverter.
Insert a sheet of paper into the ADF paper path entrance.
Manually rotate the ADF exit roll assembly by hand to feed
the sheet through the ADF to operate the actuator of the
sensor (ADF inverter).
Does the display on the operator panel change every time
the sensing area of the above sensor is blocked?
5 Check the sensor (ADF inverter) for connection.
Is the above sensor connected properly?
6 Check the inverter gate condition.
Is the inverter gate free of damage and warpage and does
it move smoothly?
7 Check the registration motor (forward or reverse) test.
Perform the registration motor test.
Open the ADF left cover assembly.
Remove the ADF rear cover. Go to
removal" on page
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 ADF registration motor operate properly?
8 Check the ADF registration motor for connection.
Is the above motor connected properly?
2-112
MFP Service Manual
Check
"ADF rear cover
4-165.
Yes
Go to step 6.
4-195.
Replace the
sensor (ADF
inverter).
Go to "Sensor
(ADF inverter)"
on page 4-189.
Go to step 7.
Go to step 9.
Replace the ADF
registration motor.
Go to "ADF
registration
motor removal"
on page 4-201.
No
Go to step 5.
Replace the
connection.
Replace the
inverter gate.
Go to "Inverter
gate removal" on
page 4-191.
Go to step 8.
Replace the
connection.