Lexmark MS711 Service Manual

Sensor (HPU leading edge) jam service check
Action Yes No
Step 1
Check the lower interface cable. If damaged, then replace the lower
interface cable. See “Staple, hole punch lower interface cable removal”
on page 759.
Remove the left cover. Reseat the cable J15 on the controller PCBA, then
POR the machine.
Does the error remain?
Go to step 2. The problem is solved.
Step 2
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?
If the error persists,
then go to step 3.
Replace the finisher
option. See “Staple,
hole punch finisher
option removal” on
page 738.
Step 3
a Open the rear door. Check the sensor (HPU leading edge) for damage.
Move the sensor flag and check if the sensor toggles properly.
b Open the left cover. Reseat the cable J15 on the HPU controller PCBA.
Is the sensor functional and free of damage?
If the error persists,
then go to step 4.
Replace the finisher
option. See “Staple,
hole punch finisher
option removal” on
page 738.
Step 4
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?
If the error persists,
then go to step 5.
Replace the finisher
option. See “Staple,
hole punch finisher
option removal” on
page 738.
Step 5
a Reseat all cables on the HPU controller PCBA.
b Reseat the cables J27, J19, and J13 on the stapler controller PCBA.
Does the error remain?
Replace the finisher
option. See “Staple,
hole punch finisher
option removal” on
page 738.
If the error persists,
then go to step 6.
The problem is solved.
4063
Diagnostic information
199

Lexmark MS711 Specifications

General

Brand	Lexmark
Model	MS711
Category	Printer
Language	English