Lexmark C912 Service Manual - Page 119

Duplex unit service check 5055-xxx FRU Action 1 Feed roller belts Check for wear or damage to the feed roller belts. Replace as necessary. 2 • Duplex stepper motor Be sure the stepper motor turns freely with • Side fence no binding. • Stepper motor gears Check for wear or damage to the associated gears. 3 • Feed roller solenoid assembly • Paper re-feed solenoid assembly Check for proper operation of the solenoid and linkage. Replace as necessary. 4 Photo-interrupter assembly Ensure that the photo-interrupter actuators are operating correctly and are in the proper position. Expansion paper feed service check If you have a "200 Paper Jam Tray (x)" error code, check the option connection cable for proper connection to the printer or other paper feeder. FRU 1 Feeder drive motor 2 • Gears • Feeder solenoid • Paper feed clutch • Expansion feeder control board Action If the feeder drive motor works, go to the "Paper carrying service check" on page 2-74. If the motor turns but the drive gears do not, replace the gears as necessary. Check the feeder solenoid and paper feed clutch for proper operation, and replace as necessary. If this does not correct the problem, replace the expansion feeder control board. Diagnostic information 2-69