Lexmark MX71x Service Manual page 215

Action
Step 4
Do the following:
•
Open, and then close the rear door. Check if the rear door closes
properly.
•
Check the rear door rollers for damage.
•
Remove all obstructions along the paper path.
Is the rear door functional and free of damage?
Step 5
a
Open the rear door. Check the upper and lower rollers on the finisher
side for damage.
b
Open the left cover. Reseat the cable J22 on the HPU controller board.
c
Check the paper path gears for damage.
Note: To access the gears, remove the four screws from the HPU
controller board (no need to remove the board, just move it out of
the way), and then remove the screws securing the grounding plate.
The gears are found under the grounding plate.
Are the paper path components free of damage?
Step 6
a
Reseat all cables on the HPU controller board.
b
Reseat the cables J27, J19, and J13 on the stapler controller board.
Does the error remain?
Step 7
Open the left cover, reseat all connectors on the stapler controller board
and then POR the machine.
Does the error remain?
Yes
If the error persists,
then go to step 5.
If the error persists,
then go to step 6.
Replace the finisher
option. See
hole punch finisher
option removal" on
page
If the error persists,
then go to step 7.
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
215
No
Replace the finisher
option. See
hole punch finisher
option removal" on
page 840.
Replace the finisher
option. See
hole punch finisher
option removal" on
page 840.
The problem is solved.
"Staple,
840.
The problem is solved.
851.
7463
"Staple,
"Staple,