IBM S09N-8590-00 manual Peripheral-Device-Related Symptom, Intermittent Problems

Symptom/Error					FRU/Action		in	Sequence
The system will				not	1.	LED	Card		ASM	(R)
enter	suspend			mode	2.	System board
after closing			the LCD.
Battery		fuel-gauge			1.	Remove battery ASM and					let
does	not	go	higher		it		cool		for	2 hours.
than	90%.				2.	Refresh			battery (continue
					using battery in BIOS Setup
					mode until power off, then
					charge			battery).
					3.	Battery
					4.	System board
System	configuration				1.	Load		Setup		Defaults and
does	not	match		the	reboot			the		system.
installed		devices.
System	hangs				1.	Fan ASM
intermittently.					2.	System board

Peripheral-Device-Related Symptom

Symptom/Error			FRU/Action		in Sequence
External		display	doesSystem		board
not	work	correctly.
USB does not work			System board
correctly.
Print	problems		Ÿ	Run printer self-test.
			Ÿ	Printer driver
			Ÿ	Printer cable
			Ÿ	System board
Serial or parallel			portŸ	Device driver
device		problems	Ÿ	Device cable
			Ÿ	Device
			Ÿ	System board

Note: If you	cannot	find a	symptom	or an error in this list
and the	problem	remains,	see	“Undetermined
Problems” on page 22.

Intermittent Problems

Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electronic discharge, or software errors. FRU replacement should be considered

only when a recurring problem exists.

When analyzing an intermittent problem, do the following:

1.Run the diagnostic test for the system board in loop mode at least 10 times.

2.If no error is detected, do not replace any FRUs.

ThinkPad 24021