IBM Series 1500, Series 1400 Modem-Related Symptoms, Intermittent Problems, Undetermined Problems

FRU/Action in Sequence

Symptom/Error

Printer	problems.	Ÿ	Run printer self-test.
		Ÿ	Printer driver
		Ÿ	Printer cable
		Ÿ	Ensure that "Parallel Port" in
			the "Onboard Devices Config-
			uration" menu of the BIOS
			Utility	is	correctly set.
		Ÿ	System board
Serial or parallel portŸ			Device driver
device	problems.	Ÿ	Device cable
		Ÿ	Device
		Ÿ	Ensure that "Serial Port" and
			"Parallel	Port"		in	the
			"Onboard	Devices			Configura-
			tion" menu		of	the	BIOS Utility
			is correctly			set.
		Ÿ	System board

Modem-Related Symptoms

Symptom/Error	FRU/Action in		Sequence
Internal	modem does Ÿ	Go to “FRU tests” on
not work	correctly	page	48.
	Ÿ	Modem connector
	Ÿ	Modem board
	Ÿ	System board

Intermittent Problems

Intermittent system hang problems can be caused variety of reasons that have nothing to do with defect, such as cosmic radiation, electronic dis software errors. FRU replacement should only be ered when a recurring problem exists.

When analyzing the intermittent problem, do the fo

1.	Run	the	diagnostic test for	the system boar
	10 times.
2.	If	no	error is detected,	do not replace

3.If any error is detected, replace the FR test to verify that there are no more erro

Undetermined Problems

The diagnostic tests did not identify which ada device failed, which installed devices are incor a short circuit is suspected, or whether the s erative. Follow the procedures below to isolate t FRU.

Verify that the power supply being used at the failure is operating correctly.

1. Power off the computer.

38 ThinkPad i Series 1400/1500 HMM