Lexmark 5016-001 manual Main Fan Service Check, Pin 3 Red

5016-001

Main Fan Service Check

	FRU	Action
1	Main Fan Cable	Be sure the fan cable in-line connector is
		connected properly to the CRF cable from the
		engine board.
2	Main Fan	Manually spin the fan and verify it rotates freely.
	Engine Board
	Cable (CRF)	• If incorrect, replace the engine board (CRF)
	Engine Board	to fan cable.
		• If the fan turns freely, turn the printer off and
		check the voltages below from the fan
		connector to the printer board cable (CRF),
		as you turn the printer on.

Fan cable connector:

•Pin 1 (Green)

0 V dc (running and not running)

•Pin 2 (Yellow)

0 V dc (fan not running) +5 V dc (fan running)

•Pin 3 (Red)

0 V dc (fan not running) +24 V dc (fan running)

If any of the voltages are incorrect, disconnect the fan cable from the engine board cable and check the voltages on the engine board cable connector.

•If correct, replace the main fan.

•If incorrect, check the engine board cable (CRF).

•If incorrect, replace the cable.

•If correct, replace the engine board.

2-62Service Manual