Lexmark Optra C710 Service Manual page 191

5016-001
F 202 Paper Jam displays. Paper is jammed in upper unit of the
duplex assembly, when printing in the duplex mode. The printer is
operating correctly.
FRU
1 Upper Cover
2 Paper Exit/
Storage
Selection Guide
(Gate Claw)
Gear 27Z,
Limiter Parts,
Paper Exit
Roller
3 Interlock Switch
lower Duplex
Unit (+24V dc
Interlock)
Duplex Option
Controller Board
4 Upper Duplex
Motor (FM)
Upper Duplex
Unit Gears,
Rollers, Belt
Action
Be sure the latch on the upper cover is correctly
located in the opening in the paper exit guide. If it
is not properly installed, paper will catch on the
upper cover and jam.
Check the paper exit/storage guide for proper
operation. Check all the gears, limiter parts and
rollers for signs of wear, broken parts or binds.
Repair or replace broken, worn or binding parts.
Check the continuity of the microswitch and cable.
• If incorrect, replace the switch or cable.
• If there is continuity, replace the duplex option
controller board.
Check cables ADT and ADL. Check the gears,
rollers and belt for proper operation. If the feed
motor does not turn check the voltages on CN904.
Pin # Voltage
Signal
1 ABM
2 COM
4 BM
5 AM
6 BBM
All voltages are approximate values
• If the voltages are incorrect, replace the duplex
option board.
• If the voltages are correct, replace the motor.
Voltage
Static
+24 V dc
+24 V dc
+24 V dc
+24 V dc
+24 V dc
Diagnostic Information
2-125