Lexmark C920 - Stapler Motor Error

Diagnostic information 2-29
5056-XXX
999 - Stapler Motor Error
Step Questions/actions Yes No
1 Are staples jammed in the stapler? Go to step 2. Go to step 3.
2
Clear the staple jam and run the staple test in
diagnostic mode or run a staple job. Does the problem
reoccur?
Replace the
staple cartridge
and to go step 4.
Problem solved.
3
Are the connectors CN5 on the stapler and PJ1 on the
finisher control board securely connected?
Go to step 5. Securely connect
the connectors.
4
Did replacement of the stapler cartridge resolve the
problem?
Problem
resolved.
Replace the
stapler.
5
Make sure the finisher set switch is activated. Measure
for 5 V dc between pins 11 and 12 on stapler connector
CN5. Is 5 V dc present?
Replace the
stapler.
Replace the
finisher control
board.
6
Did replacement of the finisher control board correct
the problem?
Problem solved. Go to step 7.
7
Is there continuity on the stapler to finisher control
board cable?
Replace the
power supply.
Replace the
cable.