Lenovo 33472YU Bedienungsanleitung Seite 84

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StepScrew(quantity)Color
Torque
2
M2×3mm,wafer-head,nylon-coated(1)Silver
0.181Nm
(1.85kgf-cm)
Wheninstalling:Ensurethattheconnectorisattachedrmly.
1110Systemboardandbasecoverassembly
Importantnoticesforhandlingthesystemboard
Whenhandlingthesystemboard,bearthefollowinginmind:
Thesystemboardhasanaccelerometer,whichcanbebrokenifseveralthousandsofG-forcesareapplied.
Note:Droppingasystemboardfromaheightofaslittleassixinchessothatitfallsatonahardbenchcansubject
theaccelerometertoasmuchas6,000G'sofshock.
Becarefulnottodropthesystemboardonabenchtopthathasahardsurface,suchasmetal,wood,orcomposite.
Ifasystemboardisdropped,besuretodocumentthedropinanyrejectreport,andreplacethesystemboard.
Avoidroughhandlingofanykind.
Ateverypointintheprocess,besurenottodroporstackthesystemboard.
Ifyouputasystemboarddown,besuretoputitonlyonapaddedsurfacesuchasanESDmatoracorrugated
conductivesurface.
Foraccess,removetheseFRUsinorder:
“1010Harddiskdriveorsolid-statedrive”onpage58
“1020Keyboard”onpage60
“1030PCIExpressMiniCardforwirelessLAN”onpage62
“1040PCIExpressMiniCardforwirelessWANormSATAsolid-statedrive”onpage63
“1050Keyboardbezel,backupbattery,andspeakerassembly”onpage66
“1100DC-inconnector”onpage77
“1070Proximitysensors”onpage70
“1060Batterypack”onpage69
“1080Thermalfanassemblyandharddiskdriveorsolid-statedriveconnector”onpage72
“1090LCDunit”onpage73
Removalstepsofsystemboardandbasecoverassembly
Attention:Thefollowingcomponentssolderedonthesystemboardareextremelysensitive.Whenyou
servicethesystemboard,avoidanykindofroughhandling.
a b
78HardwareMaintenanceManual
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