Lexmark 4402-001 manual Engine. Go to the Print Engine Removal on

4402-001

	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
		With the paper feed motor cable J3 disconnected
		from the system board, check for approximately 5
		ohms between the following pins on the motor:
		Pin 3 to Pin 4
		If the readings are incorrect, replace the print
		engine. Go to the “Print Engine Removal” on
		page 4-11.
		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. Go to the “System
		Board Removal” on page 4-12.
		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 a loose or worn motor gear.
3	Auto Sheet	Check the pick roller for wear.
	Feeder Assembly
4	Mid Frame	Check the following for wear:
	Assembly	•	Small Feed rollers
		•	Large Feed roller
		•	Exit roller
		•	Star rollers
		If any rollers need to be replaced, go to the “Print
		Engine Removal” on page 4-11 and replace the
		print engine.
5	End-of-Forms	Check for binds or damage.
	Flag and Spring

2-12Service Manual