Lenovo B580 Notebook User Manual Page 68

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RemovalstepsofI/Oboard
Removethescrews1,andthendetachthecable23.RemovetheI/Oboard4.
3
2
1
1
4
StepScrew(quantity)Color
Torque
1
M2×5mm,at-head,nylon-coated(2)
Black
1.85kgfcm
Wheninstalling:Makesurethatthecableisattachedrmlytothesystemboard.
1150SystemboardassemblyandUSBboard
Importantnoticesforhandlingthesystemboard:
Whenhandlingthesystemboard,bearthefollowinginmind:
Becarefulnottodropthesystemboardonabenchtopthathasahardsurface,suchasmetal,wood,orcomposite.
Avoidroughhandlingofanykind.
Ateverypointintheprocess,besurenottodroporstackthesystemboard.
Ifyouputasystemboarddown,besuretoputitonlyonapaddedsurfacesuchasanESDmatoracorrugated
conductivesurface.
62HardwareMaintenanceManual
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