Lexmark MX71x Service Manual page 207

Action
Step 10
Check the drive gear assembly mechanism:
•
Remove the finisher option from the printer. From the bottom of the
option, turn the lowermost drive gear clockwise. Make sure the rollers
engaged to the lowermost gear will also turn.
•
Check the drive gear assembly for damage.
Is the drive gear assembly functional and free of damage?
Step 11
Check the main motor connections. Reseat the motor cable J3 on the
controller board.
Does the error remain?
Step 12
Remove the three screws securing the main motor.
Note: No need to disconnect the motor cable. Just pull away the motor
to see its pinion gear.
POR the machine and check if the main motor runs.
Does the main motor run?
Step 13
Do a feed test. Enter Diagnostics Menu and navigate to:
FINISHER TESTS > Feed test
Does the main motor run?
Step 14
Open the left cover, reseat all connectors on the stapler controller board
and then POR the machine.
Does the error remain?
Yes
Go to step 11.
Go to step 12.
Go to step 14.
Go to step 14.
Replace the stapler
controller board. See
"Stapler controller
board removal" on
page
If the error persists,
then replace the
finisher option. See
"Staple, hole punch
finisher option
removal" on page
840.
Diagnostic information
207
No
Replace the stapler
drive gear assembly.
See "Stapler drive gear
assembly removal" on
page 857.
The problem is solved.
Go to step 13.
Replace the stapler
main motor. See
"Stapler main motor
removal" on page
852.
The problem is solved.
851.
7463