Lexmark MX71X - Finisher (HPU) Left Tamper Jam Service Check

Action Yes No
Step 4
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?
Go to step 6. Go to step 5.
Step 5
Do a feed test. Enter Diagnostics Menu and navigate to:
FINISHER TESTS > Feed test
Does the main motor run?
Go to step 6. Replace the stapler
main motor. See
“Stapler main motor
removal” on page
852.
Step 6
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?
Go to step 7. Replace the stapler
drive gear assembly.
See
“Stapler drive gear
assembly removal” on
page 857.
Step 7
Reseat all connectors on the stapler controller board and then POR the
machine.
Does the error remain?
Replace the stapler
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.
The problem is solved.
Finisher (HPU) left tamper jam service check
Action Yes No
Step 1
a POR the printer.
b Reseat all the installed output options on the printer.
c Clear obstructions along the paper path.
d Make sure that the sensors (pass through) are free from obstructions.
e Close the rear door properly.
Does the error remain?
Go to step 2. The problem is solved.
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Diagnostic information
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