Lenovo ThinkCentre Edge 91z - Removing and Reinstalling the System Board Shield

6.TurntherearI/Oassemblyupsidedown,andthenremovethetwoscrewsthatsecurethepowercord
connectortothepowercordconnectorbracket.RemovetherearI/Oassemblyfromthecomputer.
Figure23.Removingthepowercordconnector
7.ToreinstalltherearI/Oassembly,reinstallthetwoscrewsthatsecurethepowercordconnectortothe
powercordconnectorbracket.PositionthenewrearI/Oassemblyintoplace,andthenalignthe
screwholeswiththecorrespondingholesinthecomputermainbracket.Installthetwoscrewsto
securetherearI/Oassembly.
8.Goto“Completingthepartsreplacement”onpage127.
Removingandreinstallingthesystemboardshield
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkCentreEdgeSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtaina
copyoftheThinkCentreEdgeSafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoremoveandreinstallthesystemboardshield.
Toremoveandreinstallthesystemboardshield,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Placeasoft,cleantowelorclothonthedeskorotheratsurface.Holdthesidesofyourcomputerand
gentlylayitdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
3.Removethecomputercover.See“Removingthecomputercover”onpage95.
4.Locatethesystemboardshieldinthecomputer.See“FRUlocations”onpage86.
102ThinkCentreHardwareMaintenanceManual