Oki 2400 manual Paper Present Sensor Service Check

24xx

Paper Present Sensor Service Check

	FRU	Action
1	Paper Present	With no paper in the printer, the tractor in the
	Sensor	push position, and the paper select lever set to
		continuous forms, press Load/Unload; the
		gear train should turn forward to load paper.
		Activate the paper present sensor with a
		screwdriver and press Load/Unload again; the
		gear train should turn backward to park paper.
		Measure the voltage between CN5-2 (paper
		present signal) and CN5-3 (GND) on the logic
		board. There should be 0 V dc when there is
		paper in the printer, and +5 V dc when there is
		no paper in the printer.
		• Be sure the paper present sensor and its
		actuator are properly installed and not
		damaged.
		• If the problem remains, replace the paper
		present sensor.
2	Logic Board	If the ASF is being used, it is normal for the
		paper out LED not to blink when there is no
		paper in the printer. Do the following:
		• Enter the Setup Menu.
		• Be sure the ASF setting is off unless the
		ASF is installed.
		• If the paper present sensor is good and the
		ASF setting is on, replace the logic board
		and reset the “Bidirectional Print
		Adjustment” on page 4-4.

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