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
ideapad 720S-14IKB ................................... 27
Specifications ............................................... 27
Status indicators ........................................... 29
Fn key combinations..................................... 31
FRU replacement notices ............................. 32
Screw notices ..................................................32
Removing and replacing an FRU ................. 33
1010 Base cover ...............................................34
1020 Battery pack .............................................36
1030 PCI Express Mini Card for wireless
LAN ...................................................................37
1040 SSD Card (On select models) .................39
1050 DIMM .......................................................40
1060 Fan assembly and heat sink assembly ....42
1070 LCD unit ...................................................43
1080 System board ..........................................45
1090 Speakers .................................................48
1100 Power assembly, Finger print board and
Touchpad module .................................................. 49
1110 LCD front bezel ........................................51
1120 LCD panel, LCD cable, LCD bracket
and hinges ........................................................53
1130 Integrated camera ....................................55
1140 Antenna assembly and LCD cover...........56
Locations ...................................................... 57
Front view and right-side view ..........................57
Bottom and Left-side view ...............................58
Parts list ........................................................ 59
Overall ..............................................................60
LCD FRUs ........................................................68
Miscellaneous parts ..........................................70
Screw ................................................................70
Foot Rubber Pack .............................................70
AC adapters ......................................................71
Notices......................................................... 73
Trademarks .................................................. 74