Lenovo J SERIES 3000 Bedienungsanleitung Seite 83

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3.Disconnectallpowersupplycablesfromthesystemboard.See“Identifyingpartsonthesystemboard”
onpage71.
4.Attherearofthechassis,removethefourscrewsthatsecurethepowersupply.
5.Liftthepowersupplyoutofthechassis.
6.Installthenewpowersupplyandinsertthefourscrewsthatholdthepowersupplyinplace.
7.Reconnectallpowersupplycablestothesystemboardandthedrives.See“Identifyingpartsonthe
systemboard”onpage71
.Makesurethecablesarecorrectlyrouted.
8.Goto“CompletingtheFRUreplacement”onpage92.
Replacingthesystemboard(Types7393,7394,and7395)
Note:Whenreplacingthesystemboardanewretentionmoduleforthemicroprocessorheatsinkisrequired.
Makesureyouhaveanewretentionmodulebeforebeginningthisprocedure.
1.Removebothsidecovers.See“Removingthecovers”onpage70.
2.Laythecomputerontherightsidetomakethesystemboardaccessible.
3.RemoveanyadaptercardsinstalledinthePCIconnectors.See“ReplacingaPCIadapter”onpage75.
4.Carefullytakenoteofthelocationofallcableconnectionsonthesystemboardanddisconnectall
cables.See“Identifyingpartsonthesystemboard”onpage71.
5.Removethescrewsthatsecurethesystemboardtothechassis.
6.Liftthesystemboardoutofthechassis.
7.Removethememorymodulesfromthefailingsystemboardandinstalltheminthesamelocationon
thenewsystemboard.
8.Removethefourscrews1securingtheheatsinkandfanassemblytothesystemboard.
Chapter8.ReplacingFRUs(Types7387,7388,7389,7393,7394,and7395)77
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