Lexmark C91x Service Manual page 81

997 - Finisher Tractor Motor Error
Step Questions/actions
1 Are there obstructions or
foreign objects in the
accumulator or face down
paper path?
2 Are the connectors CN3 at
the tractor motor and PJ4
on the finisher control board
securely connected?
3 Make sure the finisher set
switch is activated.
Measure +24 V dc between
pin 1 of tractor motor
connector CN3 and frame
ground. Is +24 V dc
(±10%)?
4 Replace the tractor motor
assembly. Did this resolve
the problem?
5 Disconnect CN3 and PJ4
on the finisher control board
and perform a continuity
check on all positions. Is
there continuity on all
positions?
6 Check for +24 V dc
between pins 1 and 2 of
PJ3 on the finisher control
board. Is +24 V dc present?
Yes
Remove the
objects or
obstructions.
Go to step 3.
Go to step 4.
Problem solved.
Go to step 6.
Replace the
finisher control
board.
Diagnostic information
5055-xxx
No
Go to step 2.
Securely
connect the
connectors.
Go to step 5.
Replace the
finisher control
board.
Replace the
cable.
Replace the
power supply.
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