Lenovo ThinkCentre Edge 72z - Replacing the Power Supply

5.Removethescrewthatsecuresthesystemboardshield,andthenslidethesystemboardshieldout
ofthecomputer.
Figure24.Removingthesystemboardshield
6.Toreinstallthesystemboardshield,slidethesystemboardshieldintothesystemboardshieldslotso
thatthescrewholealignswiththatinthecomputer.
7.Reinstallthescrewtosecurethesystemboardshieldtothecomputer.
8.Goto“Completingthepartsreplacement”onpage124.
Replacingthepowersupply
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheSafety,Warranty,andSetupGuidethatcamewithyourcomputer.Toobtainacopyofthe
Safety,Warranty,andSetupGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethepowersupply.
Toreplacethepowersupply,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Placeasoft,cleantowelorclothonthedeskorotheratsurface.Holdthesidesofyourcomputerand
gentlylayitdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
3.Removethecomputercover.See“Removingthecomputercover”onpage94.
4.RemovetheVESAmountbracket.See“RemovingtheVESAmountbracket”onpage98.
5.Locatethepowersupply.See“LocatingmajorFRUsandCRUs”onpage82.
6.Removethesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage101.
7.Disconnectthepowersupplycablesfromthesystemboard.See“Locatingpartsonthesystemboard”
onpage86.
8.RemovetherearI/Oassembly,andthenremovethepowercordconnectorfromthepowercord
connectorbracket.See“ReplacingtherearI/Oassembly”onpage99.Removethepowersupply
outofthecomputer.
102ThinkCentreEdgeHardwareMaintenanceManual