Lexmark MX71x Service Manual page 327

Action
Step 3
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 4
a
Open the rear door. Clear all obstructions on the hole punching area.
Rotate the gear engaged to the hole puncher to release stuck media
fragments.
b
Open the left and right cover. Reseat the cables J23, J19, and J17 on
the HPU controller board. Reseat the same cables on their sensor and
motor end.
c
Do a Hole punch test. Enter Diagnostics menu, and navigate to:
FINISHER TESTS > Hole Punch Test
Is the hole puncher functional?
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
Open the rear door. Remove all obstructions and media fragments on
the sensor (HPU media align).
b
Open the left cover, and then reseat the sensor cables J3 and J18 on
the HPU controller board.
Does the error remain?
Step 7
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?
Yes
If the error persists,
then go to step 4.
If the error persists,
then go to step 5.
If the error persists,
then go to step 6.
Go to step 7.
Replace the finisher
option. See
hole punch finisher
option removal" on
page
If the error persists,
then go to step 8.
Diagnostic information
327
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.
Replace the finisher
option. See
hole punch finisher
option removal" on
page 840.
The problem is solved.
The problem is solved.
"Staple,
840.
7463
"Staple,
"Staple,
"Staple,