Lenovo ThinkCentre Edge 91z - Page 111

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Placeasoft,cleantowelorclothonthedeskorotheratsurface.Holdthesidesofyourcomputerand
gentlylayitdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
3.Removethecomputercover.See“Removingthecomputercover”onpage95.
4.RemovetheVESAmountbracket.See“RemovingtheVESAmountbracket”onpage99.
5.Locatethepowersupply.See“FRUlocations”onpage86.
6.Removethesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage102.
7.Disconnectthepowersupplycablesfromthesystemboard.See“Systemboardpartsandconnectors”
onpage88.
8.Removethethreescrews1thatsecurethepowersupply.
Figure26.Removingthethreescrewsthatsecurethepowersupply
9.RemovetherearI/Oassembly,andthenremovethepowercordconnectorfromthepowercord
connectorbracket.See“ReplacingtherearI/Oassembly”onpage100.Removethepowersupply
outofthecomputer.
10.Toreinstallthepowersupply,reinstallthetwoscrewsthatsecurethepowercordconnectortothe
powerconnectorbracket.See“ReplacingtherearI/Oassembly”onpage100
11.Positionthenewpowersupplyinthecomputerandalignthethreescrewholesinthenewpowersupply
withthoseinthecomputermainbracket.Installthethreescrewstosecurethenewpowersupply.
12.Routethenewpowercordconnectorcable,andthenreinstalltherearI/Oassembly.See“Replacing
therearI/Oassembly”onpage100.
13.Connectthenewpowersupplycablestothepowersupplyconnectorsonthesystemboard.See
“Systemboardpartsandconnectors”onpage88.
14.Reinstallthesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage102.
15.ReinstalltheVESAmountbracket.See“RemovingtheVESAmountbracket”onpage99.
16.Reinstallthecomputercover.See“Removingthecomputercover”onpage95.
17.Goto“Completingthepartsreplacement”onpage127.
Chapter8.ReplacingFRUs105