Computer Hardware User Manual
Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabel
attached.Therearenoserviceablepartsinsidethesecomponents.
CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwait
threetoveminutestoletthecomputercoolbeforeremovingthecomputercover.
Toreplacethepowersupplyassembly,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removeanylockingdevicethatsecuresthecomputercover,suchasapadlockoranintegrated
cablelock.
3.Removethecomputercover.See“Removingthecomputercover”onpage64.
4.Placethecomputeronitssidetogaineasieraccesstothepowersupply.
5.Disconnectthepowersupplyassemblycablesfromthesystemboardandthedrives.Insomemodels,
youmightneedtodisconnectthepowersupplyassemblycablesfromthePeripheralComponent
Interconnect(PCI)cards.
6.Removethesixscrewsthatsecurethepowersupplyasshowninthefollowingillustration.
Figure55.Removingsixscrewsthatsecurethepowersupplyassembly
7.Slidethepowersupplyassemblytowardthefrontofthecomputerandthenliftitoutofthechassis.
8.Installthenewpowersupplyassemblyintothechassis,andmakesurethescrewholesinthenew
powersupplyassemblyalignwiththoseinthechassis.
9.Installthesixscrewsthatsecurethenewpowersupplyassemblyinplace.
10.Connectthepowersupplyassemblycablestothesystemboardandalldrives.Insomemodels,you
mightneedtoconnectthepowersupplyassemblycablestothePCIcards.
11.Returnthecomputertoitsoriginalposition.
Chapter10.ReplacingFRUs103