Lexmark T652 - Page 103

Action Yes No
Step 3
Check if the display on the operator panel changes every time the
sensing area of the media tray sensor (duplex input) is interrupted
or blocked.
a Enter the diagnostic mode.
b Select Duplex tests.
c Select Sensor test.
d Observe the line item “input.”
If necessary, replace the connection or the sensor (duplex input).
See
“Sensor (duplex input) removal (T652, T654, T656)” on
page 340.
Does the problem remain?
Go to step 4. Problem is solved.
Step 4
Remove obstructions in the aligner assembly.
Does the problem remain?
Go to step 5. Problem is solved.
Step 5
Remove obstructions in the external duplex media path.
Does the problem remain?
Go to step 6. Problem is solved.
Step 6
Remove, then properly reinstall the external duplex unit assembly.
Does the problem remain?
Go to step 7. Problem is solved.
Step 7
Check if the display on the operator panel changes every time the
sensing area of the media tray sensor (duplex input) is interrupted
or blocked.
a Enter the diagnostic mode.
b Select Duplex tests.
c Select Sensor test.
d Observe the line item “input.”
If necessary, replace the connection or the external duplex
assembly.
Does the problem remain?
Go to step 8. Problem is solved.
Step 8
Perform a print test using the duplex.
Does the problem remain?
Contact next level of
support.
Problem is solved.
4062
Diagnostic information
103