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IBM 2388 Hardware Maintenance Manual - Page 149

IBM 2388 - ThinkPad G40 - Pentium 4 3 GHz Manual

UPC - 000435123473

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Parts list No. FRU P/N CRU ID 20c Heatsink - VGA External card 26R8043 N 21 Fan ASM 91P8535 N Fan ASM -CPU 3 GHz 91P8536 Fan/heatsink ASM for F4 26R8028 NB heatsink with hex screw 26R8087 22 Keyboard** (see "Keyboard" on page 149.) 23 Pointing stick cap (standard) 91P9642 * Pointing stick cap (convex) 91P8422 Pointing stick cap (flare) 91P8423 Pointing stick cap (hair composition) 84G6535 24 Rubber/tape kit from 238x-7xx to 238x09xx and 238x-Axx to 238x-Cxx 13N5549 N Rubber/tape kit - rubber foot x4, screw 26R8042 cap x4 ThinkPad G40, G41 145

Section	Page
Contents	3
About this manual	5
Introduction	7
Important service information	7
Strategy for replacing FRUs	7
Strategy for replacing a hard disk drive	8
How to use error messages	8
Diskette compatibility matrix	8
Safety notices: multilingual translations	8
Safety information	20
General safety	20
Electrical safety	21
Safety inspection guide	23
Handling devices that are sensitive to electrostatic discharge	24
Grounding requirements	25
Laser compliance statement	25
General descriptions	29
Read this first	29
What to do first	29
Related service information	32
Service Web site	32
Restoring the preloaded system	32
Using the recovery CD	33
Passwords	34
Power-on password:	35
Hard disk password:	35
Supervisor password:	35
How to remove the power-on password	35
How to remove the hard disk password	36
Power management	37
Screen blank mode	37
Standby mode	37
Hibernation mode	37
Checkout guide	39
Testing the computer	39
Detecting system information with PC-Doctor	41
Hardware Info	41
Utility	41
Power system checkout	42
Checking the ac adapter	42
Checking operational charging	43
Checking the battery pack	43
Checking the backup battery	44
ThinkPad G40, G41	47
Product overview	49
Specifications	49
Status indicators	51
FRU tests	53
Fn key combinations	55
Symptom-to-FRU index	56
Numeric error codes	56
Error messages	60
Beep symptoms	62
No-beep symptoms	62
LCD-related symptoms	63
Intermittent problems	64
Undetermined problems	64
FRU replacement notices	65
Screw notices	65
Retaining serial numbers	66
Restoring the serial number of the system unit	66
Retaining the UUID	67
Reading or writing the ECA information	67
Removing and replacing a FRU	69
1010 Battery pack	70
1020 Hard disk drive	71
1030 DIMM door	73
1040 DIMM	74
1050 Modem daughter card (MDC)	75
1060 Backup battery	76
1070 Keyboard	77
1080 Middle cover	79
1090 Hinge cover	80
1095 FDD assembly	81
1100 Blank bezel FDD assembly	82
1110 VGA heatsink assembly	83
1120 VGA card assembly	84
1130 CD-ROM/DVD drive and ODD bracket	85
1140 Mini PCI adapter	86
1150 PC card slot assembly	87
1160 LCD and Keyboard bezel assembly	90
1170 LCD assembly	93
1180 Keyboard bezel	96
1190 Fan assembly	98
2000 Fan (CPU 3 GHz) and CPU fixture	100
2010 CPU	102
2020 CD-ROM/DVD drive bracket	103
2030 FDD bracket	104
2040 System board	105
2050 Lower case assembly	106
2060 Modem cable	107
2070 PC card slot assembly	108
2080 LCD front bezel	109
2090 Inverter card	110
3000 Speaker assembly	111
3010 LCD cable assembly	112
3020 Wireless antenna and rear cover	114
3030 LCD panel and hinge assembly	115
Locations	116
Front view	116
Rear view	117
Bottom view	118
Parts list	119
G40, G41 series	119
Overall	143
LCD FRUs	150
14.1 in. TFT	151
15 in. TFT	151
Keyboard	153
Recovery CDs	154
Windows XP Home Edition (for G40)	154
Windows XP Home Edition (for G41)	154
Windows XP Professional (for G40)	155
Windows XP Professional (for G41)	156
Windows 2000 (for G40)	157
Miscellaneous parts	157
AC adapters	157
Telephone cable	157
Optional FRUs	158
Common parts list	158
Tools	158
Power cords	159
Notices	160