Sharp UX-2200CM, FO-2150CM technical manual Service Checks, Carrier Transport Service Check

UX-2200CMU/CMC

FO-2150CMU/CMC

[8] Service Checks

1. Carrier Transport Service Check

	FRU	Action
1	System Board	Check the motor for binds,or loose motor pulley.
		Turn the printer off and disconnect CN2 from the system board.Check
		for motor pins shorted to the motor housing.If you find a pin shorted to
		the housing,replace the motor. If the failure remains,replace the system
		board.
2	Carrier Transport	A noisy or chattering motor or a motor that fails to turn can be caused
	Motor	by:
		• An open or short in the motor.
		• An open or short in the motor driver on the system board.
		• A bind in the carrier transport mechanism.
		With the carrier transport motor cable disconnected from the system
		board,check for zero to ten (0-10)ohms between the following pins on
		the motor:
		CN2-1 and CN2-2
		CN2-3 and CN2-4
		If the readings are incorrect,replace the motor.
3	Carrier Guide Rod	Clean the carrier rod.
		Note:Lubricate the carrier guide rod and the carrier rod bearing surface
		with grease.
4	Carrier Transport Belt	Check for worn,loose or broken parts. Check for obstructions blocking
	Idler Pulley Parts	carrier movement.
	Carrier Frame	Carrier to carrier frame engagement should be lubricated with grease.
5	Home Position Sensor	Be sure the carrier returns to the home position after turning the printer
		on. If the carrier moves half way,or if there is an abnormal sound,turn
		the printer off and disconnect CN3 from the system board. Turn the
		printer on and check for 5V dc between CN3-4 and CN3-2 on the
		system board. If the voltage is present,replace the home position
		sensor. If the voltage is not present,replace the system board.
6	Maintenance Station	A problem with the maintenance station can cause carrier movement
		problems at the right margin. Go to the ‘Maintenance Station Service
		Check’ on page 3.

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