IBM A21P, A21M, A22P, A22M, A20M, MT 2631 manual ThinkPad A20m/p, A21m/p and A22m/p

ThinkPad A20m/p, A21m/p and A22m/p

Product overview		41
Specifications		41
Status indicators		44
FRU tests		46
Fn key combinations		48
Symptom-to-FRU index		49
Numeric error codes		49
Error messages		52
Beep symptoms		53
No beep symptoms		53
LCD-related symptoms		54
Intermittent problems		55
Undetermined problems		55
FRU replacement notices		56
Screw notices		56
Retaining serial numbers		57
Restoring the serial number of the system unit		57
Retaining the UUID		57
Removing and replacing a FRU		59
1010	Battery pack	60
1020	DIMM	61
1030	Mini PCI adapter	63
For A20m/p, A21m/p series		64
For A22m/p series		65
1040	Backup battery	66
1050	Hard-disk drive or RF ID adapter . . . .	67
1060	Ultrabay 2000 device	69
1070	Keyboard	71
1080	Keyboard CRU insulator	74
1090	Hinge cover and clear sheet icon . . . .	75
1100 Keyboard bezel and speaker		76
1110 Microphone and speaker cable		78
For A20m/p and A21m/p series (microphone and
	speaker cable)	78
For A22m/p series (speaker cable)		79
1120 Sub card		80
1130 PC Card slot assembly		82
1140 Fan assembly		83
1150 Diskette drive		85
1160 Upper shield		87
1170 TV card		88
1180 CPU socket and CPU		89
1190 System board and RJ45/11 connector
assembly		91
For A20m/p and A21m/p series		92
For A22m/p series		92
Thermal rubbers location		93
2010	LCD assembly	94
2020	Front bezel	96
© Copyright IBM Corp. 2001		39