Oki 2400 manual Paper Select Sensor Service Check

24xx

Paper Select Sensor Service Check

If form feed length is off by about 1 inch (25 mm), enter Setup Mode and verify that the form length setting is correct. Go to “Setup Mode” on page 1-2.

	FRU	Action
1	Paper Select	Remove all paper from the printer and do the
	Sensor	following:
		• Place the tractor in the push position and be
		sure the Auto Sheet Feed (ASF) is set to
		OFF in Setup Mode.
		• Press FormFeed and time how long the
		gear train rotates.
		With the paper select lever in the cut sheet
		position (sensor open) the gear train should
		rotate for less than 2 seconds. With the lever in
		the continuous forms position (sensor closed),
		the gear train should rotate for more than 3
		seconds. If the gear train does not rotate for
		more than 3 seconds:
		• Inspect the sensor to be sure it opens and
		closes by the paper separator.
		• Replace the paper select sensor if the
		resistance does not change from zero to
		infinite, as the paper select lever is moved
		from cut sheet to continuous forms.
		If the paper select sensor is good, but the gear
		train does not run the right length of time:
		• Set the head gap to position 1 and
		disconnect the short flexible cable from CN8
		on the logic board.
		• Check the continuity between CN8-2 (paper
		select sensor) and GND while actuating the
		paper select lever.
		If the resistance is incorrect, replace the logic
		board and reset the “Bidirectional Print
		Adjustment” on page 4-4.

Diagnostic Information 2-25