Finisher Tractor Motor Error; Tray Elevator Motor Error - Lexmark C920 Service Manual

5056-XXX

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?

998 - Tray Elevator Motor Error

Step Questions/actions
1 Are the connectors CN4 at the tray elevator motor and
connector PJ4 on the finisher control board properly
connected?
2
Make sure that the finisher set switch is activated.
Power the printer off. Measure for approximately +24 V
dc (±10%) between pins 1 and 2 of connector CN4 at
the tray elevator motor. Power the printer on and
observe the voltage meter during the first 12 seconds
of power up. Is +24 V dc present while the printer is
powering up?
3 Disconnect CN4 at the tray elevator motor. Disconnect
PJ4 on the finisher control board. Measure for
continuity between CN4 pin 1 and PJ4 pin 7. Measure
for continuity between CN4 pin 2 and PJ4 pin 8. Is
there continuity in both locations?
4 Measure for +24 V dc (±10%) between pins 1 and 2 on
connector PJ6. Is +24 V dc present?
2-28
Service Manual
Yes No
Remove the Go to step 2.
objects or
obstructions.
Go to step 3. Securely connect
the connectors.
Go to step 4. Go to step 5.
Problem solved. Replace the
finisher control
board.
Go to step 6. Replace the
cable.
Replace the Replace the
finisher control power supply.
board.
Yes No
Go to step 2. Properly connect
the connectors.
Replace the tray Go to step 3.
elevator motor.
Go to step 4. Replace the
cable.
Replace the Replace the
finisher control finisher power
board. supply.