Lenovo ThinkPad E555 User Manual Page 83

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Instep6,releasethekeyboardbezelassemblyfromtheframeusingaplasticprytool.
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Wheninstalling:Ensurethatallthelatchesareattachedfirmly.
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1130Systemboardandthermalfan
Importantnoticesforhandlingthesystemboard:
Whenhandlingthesystemboard,readthefollowing:
Thesystemboardhasanaccelerometer,whichcanbebrokenwhenseveralthousandsofG-forcesareapplied.
Note:Droppingasystemboardfromaheightofaslittleas6inchessothatitfallsflatonahardbenchcansubject
theaccelerometertoasmuchas6000G'sofshock.
Becarefulnottodropthesystemboardonabenchtopthathasahardsurface,suchasmetal,wood,orcomposite.
Avoidroughhandlingofanykind.
Ateverypointintheprocess,besurenottodroporstackthesystemboard.
Ifyouputasystemboarddown,besuretoputitonlyonapaddedsurfacesuchasanESDmatoracorrugated
conductivesurface.
Chapter9.RemovingorreplacingaFRU77
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