IBM THINKPAD X121E Bedienungsanleitung Seite 71

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1130Systemboardassembly,fanassembly,andbackupbattery
Importantnoticesforhandlingthesystemboard:
Whenhandlingthesystemboard,bearthefollowinginmind.
Thesystemboardhasanaccelerometer,whichcanbebrokenifseveralthousandsofG-forcesareapplied.
Note:Droppingasystemboardfromaheightofaslittleas6inchessothatitfallsatonahardbenchcansubject
theaccelerometertoasmuchas6,000G'sofshock.
Becarefulnottodropthesystemboardonabenchtopthathasahardsurface,suchasmetal,wood,orcomposite.
Ifasystemboardisdropped,youmusttestit,usingPC-DoctorforDOS,tomakesurethattheHDDActive
ProtectionSystemstillfunctions.
Note:IfthetestshowsthattheHDDActiveProtectionSystemisnotfunctioning,besuretodocumentthedrop
inanyrejectreport,andreplacethesystemboard.
Avoidroughhandlingofanykind.
Ateverypointintheprocess,besurenottodroporstackthesystemboard.
Ifyouputasystemboarddown,besuretoputitonlyonapaddedsurfacesuchasanESDmatoracorrugated
conductivesurface.
Afterreplacingthesystemboard,runPC-DoctorforDOStomakesurethattheHDDActiveProtectionSystem
stillfunctions.Theprocedureisasfollows:
1.Placethecomputeronahorizontalsurface.
2.RunDiagnosticsThinkPadDevicesHDDActiveProtectionTest.
Attention:Donotapplyphysicalshocktothecomputerwhilethetestisrunning.
Foraccess,removetheseFRUsinorder:
“1010Batterypack”onpage50
“1020Bottomslotcover”onpage51
“1040Harddiskdriveorsolidstatedriveassembly”onpage53
“1070Keyboard”onpage57
“1090Topcaseassembly”onpage60
“1100Bluetoothdaughtercard”onpage62
Table23.Removalstepsofsystemboard
Chapter8.RemovingandreplacingaFRU65
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