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 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
Passwords .................................................... 24
Power-on password ..........................................24
Hard-disk password ..........................................24
Supervisor password ........................................24
Power management ..................................... 25
Screen blank state ............................................25
Putting the computer to sleep or
shutting it down .................................................25
Putting your computer to sleep .........................25
Shutting down the computer .............................26
Lenovo YOGA 900S-12ISK ......................... 27
Specifications ............................................... 27
Status indicators ........................................... 29
Fn key combinations..................................... 30
FRU replacement notices ............................. 31
Screw notices ..................................................31
Removing and replacing an FRU ................. 32
1010 Base cover ...............................................33
1020 Battery pack .............................................35
1030 PCI Express Mini Card for wireless
LAN ..................................................................36
1040 SSD card .................................................38
1050 System board ..........................................39
1060 Heat sink assembly .................................42
1070 Speakers .................................................43
1080 Power assembly, USB board, power
button board and touch pad ..............................44
1090 LCD unit ...................................................46
1100 Antenna ....................................................48
1110 LCD module .............................................49
1120 Mic board, Sensor board, LCD cover,
and hinges ........................................................51
Locations ...................................................... 53
Front view and right-side view ..........................53
Bottom and Left-side view ...............................54
Parts list ........................................................ 55
Overall ..............................................................56
LCD FRUs ........................................................60
Screw ................................................................62
AC adapters ......................................................63
Power cords ......................................................64
Lenovo logo ......................................................64
Notices......................................................... 65
Trademarks .................................................. 66