Action Yes No
Step 4
Check the sensor (duplex exit) for damage, and if necessary,
replace the external duplex unit assembly.
Does the problem remain?
Go to step 5. Problem is solved.
Step 5
Check if the display on the operator panel changes every time the
sensing area of the sensor (duplex exit) is interrupted or blocked.
a Enter the diagnostic mode.
b Select Duplex sensor tests.
c Select Sensor test.
d Observe the line item “exit.”
If necessary, replace the connection, the external duplex unit
assembly, or the external duplex assembly.
Does the problem remain?
Contact next level of
support.
Problem is solved.
External duplex assembly error (external duplex) service check
Action Yes No
Step 1
Remove all media present in the media path.
Does the problem remain?
Go to step 2. Problem is solved.
Step 2
Reinstall all media properly.
Does the problem remain?
Go to step 3. Problem is solved.
Step 3
Remove obstructions in the media path.
Does the problem remain?
Go to step 4. Problem is solved.
Step 4
Reinstall the external duplex assembly properly.
Does the problem remain?
Go to step 5. Problem is solved.
Step 5
Open and then close the rear door of the external duplex.
Does the problem remain?
Go to step 6. Problem is solved.
4062
Diagnostic information
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