
Note:Droppingasystemboardfromaheightofaslittleas6inchessothatitfallsflatonahardbench
cansubjecttheaccelerometertoasmuchas6000G'sofshock.
•Becarefulnottodropthesystemboardonabenchtopthathasahardsurface,suchasmetal,wood,or
composite.
•Avoidroughhandlingofanykind.
•Ateverypointintheprocess,besurenottodroporstackthesystemboard.
•Ifyouputasystemboarddown,besuretoputitonlyonapaddedsurfacesuchasanESDmatora
corrugatedconductivematerial.
Foraccess,removetheseFRUsinorder:
•“1010Batterypack”onpage58
•“1030Largebottomdoor”onpage60
•“1110Keyboard”onpage68
•“1120Keyboardbezelassembly”onpage73
•“1150LCDunit”onpage82
•“1160Magnesiumstructureframe”onpage85
•“1170Speakerassembly”onpage86
•“1190Thermalfanassembly”onpage88
•“1200USBcard”onpage90
Thefollowingcomponentssolderedonthetopsideofthesystemboardisextremelysensitive.Whenyou
servicethesystemboard,avoidanykindofroughhandling.
aMicroprocessor
bGraphicProcessingUnit(GPU)
cAccelerometerchipfortheharddiskdriveActiveProtectionSystem
®
(APS)
dPlatformControllerHub(PCH)
Note:GPUisonlyformodelsthathaveadiscretegraphicscard.
92HardwareMaintenanceManual
R