Finisher Undetected Service Check - Lexmark M5150 Service Manual

Action
Step 8
Remove the stapler cartridge. Using a flashlight, check the sensor
(cartridge present) inside the stapler cartridge assembly. Manually
actuate the sensor flag, and check if it toggles properly.
Is the sensor functioning properly?
Step 9
Open the left cover, reseat all connectors on the controller PCBA and then
POR the machine.
Does the error remain?

Finisher undetected service check

Action
Step 1
Is the staple finisher the only output option installed?
Step 2
Remove all output options and re-install only the staple finisher.
Enter Diagnostics Menu and navigate to:
Output bin tests > Feed to all bins
Does the output option feed to all bins normally?
Step 3
Check the auto connector end of the option previously installed below the
staple finisher.
Is it free of damage?
Yes
Go to step 9.
Replace the controller
PCBA. Go to
controller PCBA
removal" on page
663.
If the error persists,
then replace the staple
finisher assembly. Go
to
option removal" on
page
Yes
Go to step 4.
The problem may not
be on this option tray.
Re‑install the
remaining output
options one at a time
and test each option
for errors. Proceed
with the appropriate
service check based on
the error message and
the output option
being tested.
Go to step 4.
Diagnostic information
301
No
Replace the staple
finisher assembly. Go
to "Staple finisher
option removal" on
page
The problem is solved.
"Stapler
"Staple finisher
621.
No
Go to step 2.
Go to step 3.
Replace the upper
interface cable of the
output option
previously installed
under the staple
finisher.
4063
621.