Lexmark 24XX-100 manual Adjustment. See Bidirectional Print

24xx

	FRU/Symptom	Action
4	If the prior	The following may cause undefined or
	suggestions have	intermittent failures:
	not corrected the	1.Loose connector pins that fail to contact.
	problem.
		Check the following:
		• Reconnect the connectors of all FRUs and
			printer interface cables.
		• Check the continuity of the line cord.
		2.Electrical noise. Check the following:
		•	Power supply ground.
		•	Printer frame ground.
		• Printer interface cable is grounded or
			shielded.
		3.Undefined data in user applications. Check
		the baud rate at the controller. Check that the
		printer interface cable matches the printer.
5	Problem occurs	Perform the Hex Trace Print (hexadecimal
	only in specific	printing) by the following procedure and check
	user applications.	the data streams. Go to “Hex Trace Mode” on
		page 3-4.
		1. Turn the printer off.
		2. Press and hold Tractor and turn the printer
		on.
		3. Have the user print the failing job.
		4. To stop printing, turn the power off.
		If the failure still occurs, replace the logic
		board. Be sure to reset the bidirectional print
		adjustment. See “Bidirectional Print
		Adjustment” on page 4-4.

2-20Service Manual