Oki 2400 manual No Print or Abnormal Print Service Check, Operator Panel Service Check

24xx

No Print or Abnormal Print Service Check

	FRU/Function	Action
1	Logic Board	If the print test does not complete correctly,
		replace the logic board and reset the
		bidirectional print adjustment. See
		“Bidirectional Print Adjustment” on
		page 4-4.
2	Interface Cable	Check the connection and continuity of the
		interface cable.
3	Emulation Mode	Enter the Setup Menu and be sure the printer
		is in the correct emulation mode for the
		computer, either IBM or Epson. Go to “Setup
		Mode” on page 1-2.

Operator Panel Service Check

If the operator panel is locked, only the Start/Stop, FormFeed, Tear Off and Load/UnLoad buttons are active. 24xx printers have a Padlock LED to indicate that the operator panel is locked. To lock or unlock the operator panel, turn the printer off and while holding the Load/Unload and Tractor buttons, turn the printer on.

	FRU	Action
1	Operator Panel	Disconnect the operator panel cable from the
	Cable	operator panel and the logic board, and verify
		continuity of the operator panel cable.
		Connect the operator panel to the logic board
		and be sure +5 V dc is present at connectors
		CN13-1 and CN13-3.
		Replace the operator panel cable, or the power
		cable, as necessary.
2	Operator Panel	If the problem remains, replace the operator
		panel.

Diagnostic Information 2-21