Lexmark W850n Service Manual page 151

Step
2 Check the roll.
Open the exit 2 left door assembly.
Is the exit 2 media transport roll assembly free of excess
wear and contamination?
3 Check the drive power transmission.
Do the exit 2 media transport roll assembly and the
other gears rotate smoothly?
4 Check the roll.
Open exit 2 left door assembly.
Is the exit 2 media exit roll assembly free of excess wear
and contamination?
5 Check the drive power transmission.
Do the exit 2 media exit roll assembly and the other
gears rotate smoothly?
6 Check the sensor (exit 2) for proper operation.
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?
7 Check the sensor (exit 2) for proper connection.
Is the above sensor connected properly?
8 Check the exit 2 drive motor for proper operation.
1. Enter Diagnostics mode.
2. Select MOTOR TESTS.
3. Select Exit2 drive mtr.
Does the above motor rotate normally?
9 Check the exit 2 drive motor for proper connection.
Is the above motor connected properly?
10 Perform a print test.
Does the error still occur?
Check Yes
Go to step 3. Clean or replace the
exit 2 unit assembly.
Go to
assembly removal"
on page
Go to step 4. Replace damaged
parts.
Go to
assembly removal"
on page
Go to step 5. Clean or replace the
exit 2 unit assembly.
Go to
assembly removal"
on page
Go to step 6. Replace damaged
parts.
Go to
assembly removal"
on page
Go to step 8. Go to step 7.
Replace the sensor Replace the
(exit 2). connection.
Go to "Exit 2
sensor (exit 2)
removal" on
page 4-206.
Go to step 10. Go to step 9.
Replace the exit 2 Replace the
unit assembly. connection.
Go to "Exit 2 unit
assembly removal"
on page 4-192.
Replace the exit Problem solved.
interface card
assembly.
Refer to the Printer
Service Manual.
Go to step 11.
Diagnostic information
4024-110
No
"Exit 2 unit
4-192.
"Exit 2 unit
4-192.
"Exit 2 unit
4-192.
"Exit 2 unit
4-192.
2-95