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iii
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 rst ............................................. 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
Specications ............................................... 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