Lenovo G555, Hardware Maintenance Manual, Page: 3 / 98

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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
Strategy for replacing FRUs for CTO, CMV,
and GAV ....................................................... 18
Product definition ..............................................18
FRU identification for CTO, CMV, and GAV
products ............................................................18
Important information about replacing RoHS
compliant FRUs ............................................ 20
General checkout ...................................... 21
What to do first ............................................. 22
Power system checkout................................ 23
Checking the AC adapter .................................23
Checking operational charging .........................23
Checking the battery pack ...............................24
Related service information ...................... 25
Restoring the factory contents by using
OneKey Recovery ........................................ 25
Restore of factory default .................................25
Using recovery discs.........................................25
Passwords .................................................... 26
Power-on password ..........................................26
Supervisor password .......................................26
Power management ..................................... 27
Screen blank mode ...........................................27
Sleep (standby) mode ......................................27
Hibernation mode .............................................28
Lenovo G555 ............................................... 29
Specifications ............................................... 29
Status indicators ........................................... 31
FRU tests ...................................................... 33
Fn key combinations..................................... 34
FRU replacement notices ............................. 35
Screw notices ..................................................35
Retaining serial numbers ..................................36
Removing and replacing an FRU ................. 39
1010 Battery pack .............................................40
1020 Dummy cards ..........................................41
1030 Hard disk drive (HDD) slot cover and
HDD ..................................................................42
1040 Memory/Wireless module/CPU
(central processing unit) compartment cover .......44
1050 Optical drive .............................................45
1060 DIMM .......................................................46
1070 Fan assembly and Heat Sink assembly ......47
1080 CPU .........................................................50
1090 PCI Express Mini Card for wireless
LAN/WAN .........................................................51
1100 Keyboard cover and power board ............53
1110 Keyboard ..................................................56
1120 LCD unit ...................................................58
1130 Keyboard bezel ........................................62
1140 System board ........................................... 66
1150 Bluetooth daughter card, speakers and
base cover ........................................................69
1160 LCD front bezel ........................................73
1170 LCD panel and hinges .............................74
1180 Integrated camera ....................................76
1190 Antenna assembly and LCD cover ..........77
Locations ...................................................... 78
Front view .........................................................78
Right-side view .................................................79
Bottom and Left-side view ...............................79
Parts list ........................................................ 80
Overall ..............................................................81
LCD FRUs ........................................................85
Keyboard ..........................................................87
Miscellaneous parts ..........................................89
AC adapters ......................................................90
Power cords ......................................................91
Notices......................................................... 93
Trademarks .................................................. 94