Lenovo ThinkPad Edge E545 - 1140 System Board Assembly

Removalstepsofthemicroprocessor
Rotatetheheadofthescrewinthedirectionshownbythearrow1toreleasethelock;thenremovethe
microprocessor2.
1
3
2
Wheninstalling:Placethemicroprocessorabovethemicroprocessorsocket,andthenrotatetheheadof
thescrewinthedirectionshownbythearrow3tosecurethemicroprocessor.
1140Systemboardassembly
Importantnoticesforhandlingthesystemboard:
Whenhandlingthesystemboard,bearthefollowinginmind:
•Thesystemboardhasanaccelerometer,whichcanbebrokenifseveralthousandsofG-forcesareapplied.
Note:Droppingasystemboardfromaheightofaslittleas6inchessothatitfallsatonahardbenchcansubject
theaccelerometertoasmuchas6000G'sofshock.
•Becarefulnottodropthesystemboardonabenchtopthathasahardsurface,suchasmetal,wood,orcomposite.
•Ifasystemboardisdropped,besuretodocumentthedropinanyrejectreport,andreplacethesystemboard.
•Avoidroughhandlingofanykind.
•Ateverypointintheprocess,besurenottodroporstackthesystemboard.
•Ifyouputasystemboarddown,besuretoputitonlyonapaddedsurfacesuchasanESDmatoracorrugated
conductivesurface.
Foraccess,removetheseFRUsinorder:
•“1010Batterypack”onpage62
Chapter9.RemovingorreplacingaFRU79