Lexmark Printer, J110 manual Power Supply Service Check, Dead Machine

4085-001

	FRU	Action
3	Paper Feed Pick	With the power on, check for the following
	Motor	readings:
		(J3) pin 3 to ground = 5 V dc
		(J3) pin 6 to ground = 35 V dc
		(J3) pin 7 to ground = 35 V dc
		(J3) pin 10 to ground = 5 V dc
		If voltage is incorrect, replace tray 2 card. If
		voltage is correct, disconnect (J3). Check between
		6 and 7 on the connector for approximately 11.8
		ohms. If reading is incorrect, replace the paper
		feed pick motor assembly. If reading is correct,
		check the continuity between each 6 and 7 to the
		motor case. If continuity exists, replace the paper
		feed pick motor assembly.
	Paper Feed Motor	With the power on, check the voltage at (J1) paper
		feed motor connector. The voltage at each pin
		should read approximately 34 V dc. If voltage is
		correct check continuity. If continuity is incorrect,
		replace the paper feed motor. If symptom remains,
		go to step 4.
		Note: If a short exists in the paper feed motor,
		damage to the engine board drivers and power
		supply may occur.
4	Tray 2 Sensor	See “Tray 2 Sensor Test” on page 3-27 . If test
	Check	fails, replace the sensor.
5	RIP Card Cable	Check the continuity of the RIP card cable. If
		incorrect, replace the cable. If correct, replace the
		RIP card.

Power Supply Service Check

Dead Machine

Note: Remove paper from printer prior to performing the dead machine service check. Observe all necessary ESD precautions when removing and handling the RIP card, engine board, or any of the installed option cards or assemblies.

	FRU	Action
1	AC Outlet	Check the AC outlet for correct line voltage. If
		incorrect, inform the customer.

Diagnostic Information 2-63