Lenovo 019726U manual Contents

Contents

About this manual	. v		Intermittent problems	.	58
			Undetermined problems	.	58
Safety information		1	Status indicators	.	59
General safety	.	2
Electrical safety	.	3	Special keys	.	61
Safety inspection guide	.	5
Handling devices that are sensitive to electrostatic
discharge	.	6	FRU replacement notices	.	63
Grounding requirements	.	6	Screw notices	.	63
Safety notices (multilingual translations) . . . .	.	7
			Retaining serial numbers	.	64
Important service information	29		Restoring the serial number of the system unit		64
			Retaining the UUID	.	64
Strategy for replacing FRUs	. 30		Reading or writing the ECA information . .	. 65
Strategy for replacing a hard disk drive . . . . 30
Important notice for replacing a system board .	. 31		Removing and replacing a FRU . . .	. 67
How to use error message	.	31	1010 Battery pack	.	68
Strategy for replacing FRUs for CTO, CMV, and
			1020 Bottom slot cover	.	70
GAV	.	32
			1030 DIMM	.	72
Product definition	.	32
			1040 Hard disk drive (HDD)	.	73
FRU identification for CTO, CMV, and GAV
			1050 PCI Express Mini Card for wireless LAN. . . 75
products	.	32
			1060 PCI Express Mini Card for wireless WAN .	. 77
General checkout	35		1070 Keyboard	.	79
			1080 Top case assembly and microphone module .	. 82
What to do first	.	36	1090 Backup battery	.	86
Checkout guide	.	37	1100 Bluetooth daughter card (BDC-2) . . . .	.	87
Diagnostics using PC-Doctor for DOS . . .	.	37	1110 Speaker assembly	.	88
Lenovo ThinkVantage Toolbox (Lenovo System			1120 System board and fan assembly	. 90
Toolbox)	.	40	1130 I/O card assembly, audio cable, and I/O cable		98
PC-Doctor for Rescue and Recovery . . . .	.	40	1140 LCD unit	.	100
FRU tests	.	41	1150 Base cover assembly and DC-in cable . .	.	102
Power system checkout	.	43	2010 LCD bezel assembly	.	105
Checking the AC adapter	.	43	2020 Integrated camera	.	106
Checking operational charging	. 44		2030 LCD panel and LCD cable	. 107
Checking the battery pack	.	44	2070 Hinge kit	.	110
Checking the backup battery	. 45		2050 Wireless LAN antenna assembly, wireless
Related service information	47		WAN antenna assembly, and LCD rear cover
			assembly	.	112
Restoring the factory contents by using Recovery			Locations	115
Disc Set	.	47
Passwords	.	48	Front view	.	115
Power-on password	.	49	Bottom view	.	116
Hard-disk password	.	49
Supervisor password	.	49	Parts list	117
How to remove the power-on password . . . . 49			Overall	.	118
How to remove the hard-disk password . . . . 50
			LCD FRUs	.	126
Power management	.	52
			Keyboard	.	129
Screen blank mode	.	52
			AC adapters	.	130
Sleep mode	.	52
			Miscellaneous parts	.	130
Hibernation mode	.	52
			Power cords	.	131
Symptom-to-FRU index	.	53
			Recovery discs	.	132
Numeric error codes	.	53
			Windows 7 Home Basic (32 bit) DVDs . . .	. 132
Error messages	.	56
			Windows 7 Home Premium (32 bit) DVDs .	. 132
No-beep symptoms	.	56
			Windows 7 Home Premium (64 bit) DVDs .	. 133
LCD-related symptoms	.	57
			Windows 7 Professional (32 bit) DVDs . . .	. 134
© Copyright Lenovo 2009					iii