Lexmark MX71 Series Repair Manual page 475

5
Push down on the top cover to loosen the right cover, and then pull the right cover off the finisher.
Sensor (cartridge door interlock) removal
1
Remove the finisher right cover. See
2
Disconnect the cable (A) from the sensor.
3
Release the latches from the stapler assembly frame, then remove the sensor (B).
"Staple, hole punch right cover removal" on page
Repair information
845
7463
843.