Lexmark M5150 Service Manual page 191

Action
Step 4
Check the rear door:
•
Open the rear door, and check if it closes properly.
•
Check the rear door rollers and locking mechanism for damage.
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 PCBA.
c
Check the paper path gears for damage.
Note: To access the gears, remove the four screws from the HPU
controller PCBA (no need to remove the PCBA, 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
Open the left and right cover, then do the following:
a
Check the sensor flag (throat media present) for damage. Toggle the
sensor flag and check if it has no problem moving.
b
Reseat the cable J8 on the stapler controller PCBA. Do a staple test.
Enter Diagnostics menu, and then navigate to:
FINISHER TESTS > Staple Test
Does the error remain?
Step 7
Open the top cover and do the following:
a
Check the left media stack flap for damage.
b
Make sure the left media stack flap is properly seated and aligned.
c
Check if the left media stack flap has no problem moving.
Is the left media stack flap functional and free of damage?
Step 8
Open the top cover and do the following:
a
Check the right media stack flap for damage.
b
Make sure the right media stack flap is properly seated and aligned.
c
Check if the right media stack flap has no problem moving.
Is the right media stack flap functional and free of damage?
Yes
Go to step 5.
If the error persists,
then go to step 6.
Replace the sensor
(throat media present).
See
media present)
removal" on page
747.
If the error persists,
then go to step 7.
Go to step 8.
Go to step 9.
Diagnostic information
191
No
Replace the finisher.
See "Staple, hole
punch finisher option
removal" on page
738.
Replace the finisher
option. See
hole punch finisher
option removal" on
page 738.
The problem is solved.
"Sensor (throat
Replace the finisher.
See "Staple, hole
punch finisher option
removal" on page
738.
Replace the finisher.
See "Staple, hole
punch finisher option
removal" on page
738.
4063
"Staple,