Lexmark MX71x Service Manual page 320

Action
Step 3
Remove the stapler cartridge. Check the stapler cartridge and make sure
obstructions are removed.
Is it free of damage?
Step 4
Remove the left cover. Reseat the cable J7 on the controller board, then
POR the machine.
Does the error remain?
Step 5
Remove the right cover. Reseat the two cables on the stapler cartridge
end, then POR the machine.
Does the error remain?
Step 6
Remove the stapler cartridge. Using a flashlight, check the sensor
(cartridge present) inside the stapler cartridge assembly. Manually
actuate the sensor flag, and check if it toggles properly.
Is the sensor functioning properly?
Step 7
Open the left cover, reseat all connectors on the controller board and then
POR the machine.
Does the error remain?
Yes
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 7.
Replace the controller
board. Go to
offset stacker
controller board
removal" on page
756.
If the error persists,
then replace the staple
finisher assembly. Go
to
offset stacker option
removal" on page
723.
Diagnostic information
320
No
Replace the stapler
cartridge.
The problem is solved.
The problem is solved.
Replace the staple
finisher assembly. Go
to "Staple finisher/
offset stacker option
removal" on page
723.
The problem is solved.
"Stapler/
"Staple finisher/
7463