Lexmark 4076-0XX manual Fru Or Procedure, Action, Paper Feed Motor, Diagnostic Information

4076-0XX

	FRU OR PROCEDURE	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
		Check for 100 ohms (±20 ohms)
		between the following pins on the
		motor:
		Pin 1 to Pin 4
		Pin 2 to Pin 4
		Pin 3 to Pin 5
		Pin 3 to Pin 6
		If the readings are incorrect, replace
		the motor. Check for motor pins
		shorted to the motor housing. If you
		find a shorted pin, replace the motor.
		If the failure remains, replace the sys-
		tem board.
		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
3	Gears	Check for binds in the gear train and
		paper feed mechanism. To do this,
		rotate the largest gear by hand. If you
		notice a bind isolate it by removing
		the small idler gear on the outside of
		the right side plate. Replace any worn
		or binding gears, rollers, or bearings.

Diagnostic Information 15