IBM X20, X23, X24, X22, X21 manual Contents

Contents

Chapter 1. Introduction	.	.	1
Important service information	.	.	1
FRU replacement strategy	.	.	1
Hard disk drive replacement strategy . . .	.	.	2
How to use error messages	.	.	2
How to read POST error messages . . . .	.	.	2
Safety notices: multilingual translations . . . .	.	.	3
Safety information	.		12
General safety	.		12
Electrical safety	.		13
Safety inspection guide	.		14
Handling electrostatic discharge-sensitive devices			15
Grounding requirements	.		16
Laser compliance statement	.		17
Laser radiation	.		18

Chapter 2. General descriptions	.	21
Read this first	.	21
Related service information	.	24
Service Web site	.	24
Product recovery program	.	24
Using Recovery CD	.	25
Creating a Recovery Repair diskette . . . .	.	26
Passwords . . . . . . . . . . . . . 26
Power management	.	28
Checkout guide	.	32
Testing the computer	.	34
Detecting system information with PC-Doctor. . . 35
Power system checkout	.	38

Chapter 3. ThinkPad X20, X21, X22, X23, X24 . .	. 39
Product overview	.	42
Specifications	.	42
Status indicators	.	45
Fn key combinations	.	47
Symptom-to-FRU index	.	48
Numeric error codes	.	48
Error messages	.	50
Beep symptoms	.	51
LCD-related symptoms	.	52
Intermittent problems	.	52
Undetermined problems	.	53
FRU replacement notices	.	54
Screw notices	.	54
Retaining serial numbers	.	55
Removing and replacing a FRU	.	57
1010 Battery pack	.	58
1020 DIMM	.	59
1030 Backup battery	.	60
1040 Hard disk drive	.	61

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