Lexmark MS711 - Sensor (HPU Trailing Edge) Jam Service Check

Action Yes No
Step 6
Open the left cover, reseat all connectors on the stapler controller PCBA
and then POR the machine.
Does the error remain?
Replace the stapler
controller PCBA. See
“Stapler controller
PCBA removal” on
page 749.
If the error persists,
then replace the
finisher option. See
“Staple, hole punch
finisher option
removal” on page
738.
The problem is solved.
Sensor (HPU trailing edge) jam service check
Action Yes No
Step 1
a Reseat the finisher option on the printer.
b Clear obstructions along the paper path.
c Make sure that the sensors (pass through) are free from obstructions.
d Close the rear door properly.
e POR the printer.
Does the error remain?
Go to step 2. The problem is solved.
Step 2
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 3. The problem is solved.
Step 3
Open the rear door and do the following:
a Remove all obstructions along the hole punch area and paper path.
b Reseat the sensor cable J16 on the HPU controller PCBA.
c Do a sensor test. Enter Diagnostics menu, and then navigate to:
FINISHER TESTS > Finisher Sensor Test > Pass and Media
Check if the sensor status on the control panel changes when the
sensor flag (HPU trailing edge) is toggled.
Is the sensor (HPU trailing edge) 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.
4063
Diagnostic information
197