Lexmark Optra C710 Service Manual - Page 120
Service Manual, The fuser drive system is not operating properly., Feed Motor Carriage
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5016-001 A The fuser drive system is not operating properly. FRU 1 Fuser Assembly Fuser Drive Motor Fuser Motor/Paper Feed Motor Carriage Unit Motor Cable Engine Board 2 Motor Mounting Stay Assembly (Fuser Drive Parts) Action Check the fuser assembly internal drive gears for binding, or broken or worn teeth. If a problem exists, repair or replace the fuser assembly. Remove the fuser drive motor from the stay assembly, leaving the motor cable connected to the motor. Turn the printer on, but do not allow the motor to touch other areas of the printer. Verify the motor turns during POR. If it does, the problem is most likely in the motor mounting stay assembly. Go to step 2. Check the motor for shorts between the case and each motor winding. If a short is found, replace the motor. Note: Damage to the engine board may result from a shorted motor. Check the motor for open windings. If found, replace the motor. Check continuity of the fuser motor/paper feed motor/carriage unit motor cable. • If incorrect, replace the cable. • If correct, replace the engine board. Check the fuser drive gears, gears C3-1, C32, the clutch spring, motor drive gear, gear C2 and C4 for signs of chipped gear teeth, worn parts, or improper operation. If problems are found, repair as necessary. Check the cam gears and solenoid for proper operation and signs of broken or worn gear teeth or damaged parts. If found, repair or replace the motor mounting stay assembly. 2-54 Service Manual