Lexmark W850n Service Manual page 51

Step
4 Check the drive power transmission.
Does the exit 1 media exit roll assembly and the other
gears rotate smoothly?
5 Check the sensor (fuser exit) for proper operation.
1. Enter Diagnostics mode.
2. Select BASE SENSOR TESTS.
3. Select Media Path.
4. Select Fuser exit.
Open the printer left door assembly, and visually check
it.
Does the display on the operator panel change every
time the actuator on the above sensor operates?
6 Check the sensor (fuser exit).
Is the above sensor connected properly?
7 Check the exit 2 drive motor for proper operation.
1. Enter Diagnostics mode.
2. Select MOTOR TESTS.
3. Select Exit 2 drive mtr.
4. Select Forward or Reverse.
Does the above motor rotate normally?
8 Check the exit 2 drive motor for proper operation.
Is the above motor connected properly?
9 Check the sensor (exit 2) for proper operation.
Open the printer left door assembly and the exit 2 left
door assembly.
1. Enter Diagnostics mode.
2. Select BASE SENSOR TESTS.
3. Select Media Path.
4. Select Exit2.
Does the display on the operator panel change every
time the actuator on the above sensor operates?
10 Check the sensor (exit 2) for proper connection.
Is the above sensor connected properly?
Check Yes
Go to step 5. Replace damaged
components.
Go to
shift assembly
removal" on
page
Go to step 7. Go to step 6.
Replace the sensor Replace the
(fuser exit). connection.
Go to "Sensor
(fuser exit)
removal" on
page 4-102.
Go to step 9. Go to step 8.
Replace the exit 2 Replace the
unit assembly. connection.
Refer to Options
Service Manual.
Go to step 11. Go to step 10.
Replace the sensor Replace the
(exit 2). connection.
Refer to Options
Service Manual.
Diagnostic information
4024-110
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