Lenovo U300S Contents, Handling devices that are sensitive to, Important service information

Contents
About this manual	iv
Safety information	1
General safety	2
Electrical safety	3
Safety inspection guide	5
Handling devices that are sensitive to
electrostatic discharge	6
Grounding requirements	6
Safety notices: multilingual translations	7
Laser compliance statement	14
Important service information	16
Strategy for replacing FRUs	16
Strategy for replacing a hard disk drive	17
Important notice for replacing a system
board	17
Important information about replacing RoHS
compliant FRUs	18
General checkout	19
What to do first	20
Power system checkout	21
Checking the AC adapter	21
Checking operational charging	21
Related service information	23
Restoring the factory contents by using
OneKey Recovery	23
Restore of factory default	23
Using recovery discs	23
Passwords	24
Power-on password	24
Supervisor password	24
Power management	25
Screen blank mode	25
Sleep (standby) mode	25
Hibernation mode	26
Lenovo IdeaPad U300/U300s/U400	27
Specifications	27
Status indicators	29
Function key combinations	31
FRU replacement notices	32
Screw notices	32
Removing and replacing an FRU	33
U300
1010 Base cover (U300)	34
1020 Battery pack (U300)	36
1030 Hard disk drive (U300)	37
1040 DIMM (U300)	38
1050 PCI Express Mini Card for
wireless LAN (U300)	39

1060	Fan assembly and Heat Sink
assembly (U300)		41
1070	System board (U300)	43
1080	Speakers and microphone (U300)	46
1090	LCD unit (U300)	48
1100 Keyboard and keyboard bezel (U300)		50
U300s
1010	Base cover (U300s)	54
1020	Battery pack (U300s)	56
1030	Speakers (U300s)	57
1040	Solid State Disk (U300s)	58
1050	USB Board (U300s)	59
1060 Keyboard and keyboard bezel (U300s)		60
1070	PCI Express Mini Card for
wireless LAN (U300s)		64
1080	LCD unit (U300s)	66
1090 DIMM (U300s)		68
1100 Fan assembly and Heat Sink
assembly (U300s)		69
1110 System board (U300s)		72
U400
1010	Base cover (U400)	74
1020	Battery pack (U400)	76
1030	Hard disk drive (U400)	77
1040	PCI Express Mini Card for
wireless LAN (U400)		78
1050	System board (U400)	80
1060 USB board and HDD board (U400)		82
1070	Speakers and microphone (U400)	84
1080	Optical drive (U400)	86
1090	LCD unit (U400)	87
1100 Keyboard and keyboard bezel (U400)		89
1110 Fan assembly and Heat Sink
assembly (U400)		90
1120 DIMM (U400)		92
1130 LCD front bezel (U400)		93
1140 LCD panel, hinges and
LCD cable (U400)		94
1150 Integrated camera (U400)		96
1160 Antenna assembly and LCD
cover (U400)		97
Locations		98
Front view		98
Right-side view		99
Bottom and Left-side view		100
Parts list		101
Overall		102
LCD FRUs		111
Keyboard		113
Miscellaneous parts		116
AC adapters		118
Power cords		119
Notices		127
Trademarks		128

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