Lexmark MS911 - Staple Finisher Staple Unit Failure Service Check

Action Yes No
Step 13
Replace the controller board. See
“Staple finisher controller board
removal” on page 244.
Does the problem remain?
Contact the next level
of support.
The problem is solved.
Staple finisher staple unit failure service check
Action Yes No
Step 1
a Remove any debris from the paper path.
b Reseat the interface cable that is plugged into the printer.
c Reset the printer.
Does the problem remain?
Go to step 2. The problem is solved.
Step 2
Enter the Diagnostics menu, and then navigate to:
Printer setup > Reset engine service error
Note: Perform this step every time a service error occurs.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
a Make sure that the sensor (staple finisher staple unit carriage home)
is properly installed.
b Make sure that the sensor is free of debris or dust.
c Reseat the cable on the sensor. Check the cable for damage, and
replace if necessary.
d Check the sensor for damage.
Is the sensor free of damage?
Go to step 4. Go to step 5.
Step 4
a Test the sensor.
Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > Staple Finisher Sensor Tests > Staple carriage home
b Toggle the sensor.
Does the sensor status change while toggling the sensor?
Go to step 6. Go to step 5.
Step 5
Replace the sensor. See
“Sensor (staple finisher staple unit home)
removal” on page 257.
Does the problem remain?
Go to step 6. The problem is solved.
4021, 7421
Diagnostic information
103