Fru

		Product overview

FRU	Applicable test

Diskette drive	1.	Diagnostics --> Diskette Drives
	2.	Interactive Tests --> Diskette

CD-ROM, DVD,	1.	Diagnostics --> Other Devices -->
CD-RW or		CD-ROM/DVD
CD-RW/DVD	2.	Interactive Tests --> CD-ROM/DVD Test
combo drive

Memory	1.	If two DIMMs are installed, remove one of
		them and run Diagnostics --> Memory
		Test - Quick.
	2.	If the problem does not recur, return the
		DIMM to its place, remove the other one,
		and run the test again.
	3.	If the test does not detect the error, run
		Diagnostics --> Memory Test - Full.

Fan	1.	Turn on the computer and check the air
		turbulence at the louver near the power
		switch.
	2.	Run Diagnostics --> Other Devices -->
		IBM Fan.

IBM T21, T22 manual Fru