Lexmark 2030 Color Jetprinter Service Manual - Page 17

4091-001 FRU Action 2 Paper Feed Motor A noisy or chattering motor or a motor that fails to turn, can be caused by: • An open or short in the motor • An open or short in the motor driver on the system board • A bind in the paper feed mechanism 3 Drive Train Assembly 4 Auto Sheet Feeder 5 Mid Frame Asm 6 End-of-Forms Flag and Spring With the paper feed motor cable disconnected from the system board, check for 60 ohms (±15 ohms) between the following pins on the motor: Pin 1 to Pin 5 Pin 1 to Pin 6 130 ohms (±20 ohms) between pins 5 and 6. If the readings are incorrect, replace the motor. Although the paper feeds in a forward direction only, the paper feed motor turns in two directions. If the paper feed motor turns in one direction only, replace the system board. Binds in the paper feed motor or gear train can cause intermittent false paper jam errors. Remove the paper feed motor and check the shaft for binds. Also check for loose or worn motor gear. Check for binds in the gear train and paper feed mechanism by removing the paper feed motor and rotating the large gear by hand. If you notice a bind, replace the drive train assembly. Check the feed clutch inside the large feed gear. Remove the sheet feeder. Turn the clutch gear and check that it rotates freely in one direction and locks when turned in the opposite direction. Check the pick rollers for wear. Check the following for wear: • Friction wheels • Exit roller • Star rollers Check for binds or damage. If binds are found, replace the small feed roll bracket assembly. Diagnostic Information 2-7