Lexmark MX71x Service Manual page 203

Action
Step 4
Remove the left cover. Reseat the cable J11 on the controller board, then
reseat the same cable on the sensor (paddle motor HP) end. POR the
machine.
Does the error remain?
Step 5
Reseat the cable J5 on the controller board, then reseat the same cable
on the motor end. POR the machine.
Does the error remain?
Step 6
Check the paddle motor. If damaged, then replace the paddle motor. See
"Stapler paddle motor removal" on page
Does the error remain?
Step 7
Check the paddle assembly gear box:
• Check the gears for damage
• Check the sensor flag for damage
Is the paddle assembly gear box functional and free of damage?
Step 8
Reseat all connectors on the stapler controller board and then POR the
machine.
Does the error remain?
853.
Diagnostic information
203
Yes No
Replace the sensor The problem is solved.
(paddle motor HP). See
"Sensor (paddle motor
HP) removal" on
page 854.
If the error persists,
then go to step 5.
Go to step 6. The problem is solved.
Go to step 7. The problem is solved.
Go to step 8. Replace the finisher.
See
punch finisher option
removal" on page
840.
Replace the stapler The problem is solved.
controller board. See
"Stapler controller
board removal" on
page 851.
If the error persists,
then replace the
finisher. See "Staple,
hole punch finisher
option removal" on
page 840.
7463
"Staple, hole