ThinkPad S230u - 1110 System Board and Base Cover Assembly; Silver 0.181 Nm (1.85 Kgf-CM)

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”onpage60
•“1020Keyboard”onpage62
•“1030PCIExpressMiniCardforwirelessLAN”onpage64
•“1040PCIExpressMiniCardforwirelessWANormSATAsolid-statedrive”onpage65
•“1050Keyboardbezel,backupbattery,andspeakerassembly”onpage68
•“1100DC-inconnector”onpage79
•“1070Proximitysensors”onpage72
•“1060Batterypack”onpage71
•“1080Thermalfanassemblyandharddiskdriveorsolid-statedriveconnector”onpage74
•“1090LCDunit”onpage76
Removalstepsofsystemboardandbasecoverassembly
Attention:Thefollowingcomponentssolderedonthesystemboardareextremelysensitive.Whenyou
servicethesystemboard,avoidanykindofroughhandling.
a b
80HardwareMaintenanceManual