Personal Computer User Manual
5.Removethescrewthatsecuresthesystemboardshield,andthenslidethesystemboardshieldout
ofthecomputer.
Figure24.Removingthesystemboardshield
6.Toreinstallthesystemboardshield,slidethesystemboardshieldintothesystemboardshieldslotso
thatthescrewholealignswiththatinthecomputer.
7.Reinstallthescrewtosecurethesystemboardshieldtothecomputer.
8.Goto“Completingthepartsreplacement”onpage121.
Replacingthepowersupply
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkCentreEdgeSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtaina
copyoftheThinkCentreEdgeSafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethepowersupply.
Toreplacethepowersupply,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Placeasoft,cleantowelorclothonthedeskorotheratsurface.Holdthesidesofyourcomputerand
gentlylayitdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
3.Removethecomputercover.See“Removingthecomputercover”onpage91.
4.RemovetheVESAmountbracket.See“RemovingtheVESAmountbracket”onpage95.
5.Locatethepowersupply.See“FRUlocations”onpage82.
6.Removethesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage98.
7.Disconnectthepowersupplycablesfromthesystemboard.See“Systemboardpartsandconnectors”
onpage84.
8.RemovetherearI/Oassembly,andthenremovethepowercordconnectorfromthepowercord
connectorbracket.See“ReplacingtherearI/Oassembly”onpage96.Removethepowersupply
outofthecomputer.
Chapter8.ReplacingFRUs99