Lexmark T652 Service Manual page 110

Sensor (duplex exit) service check (external duplex only)
Action
Step 1
Check the sensor (duplex exit) for damage, and if necessary,
replace the external duplex unit assembly.
Does the problem remain?
Step 2
Check if the display on the operator panel changes every time the
sensing area of the media tray sensor (duplex exit) is interrupted
or blocked.
a
Enter the diagnostic mode.
b
Select Duplex tests.
c
Select Sensor test.
d
Observe the line item "exit."
If necessary, replace the connection or the external duplex unit
assembly.
Does the problem remain?
Sensor (duplex double-feed) lingering jam service check
Action
Step 1
Remove all media present in media path.
Does the problem remain?
Step 2
Reinstall all media properly.
Does the problem remain?
Step 3
Remove obstructions in the media path.
Does the problem remain?
Step 4
Remove, and then properly reinstall the external duplex assembly.
Does the problem remain?
Step 5
Check the external duplex assembly, and if necessary, replace the
external duplex assembly.
Does the problem remain?
Diagnostic information
110
Yes No
Go to step 2. Problem is solved.
Contact next level of Problem is solved.
support.
Yes No
Go to step 2. Problem is solved.
Go to step 3. Problem is solved.
Go to step 4. Problem is solved.
Go to step 5. Problem is solved.
Contact next level of Problem is solved.
support.
4062