Lenovo IdeaCentre B345 All-in-One Bedienungsanleitung Seite 51

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Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.
Toremovethepowersupply:
Step1.Removeanymedia(disks,CDs,ormemorycards)fromthedrives,shutdowntheoperating
system,andturnoffthecomputerandallattacheddevices.
Step2.Unplugallpowercordsfromelectricaloutlets.
Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)
cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.
Step4.Removetherearcover.Referto“Removingtherearcover”.
Step5.Removethecomputerstand.Referto“Removingthecomputerstand” .
Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .
Step7.Removethemiddlecover.Referto“Removingthemiddlecover”.
Step8.RemovetheEMIcover.Referto“RemovingtheEMIcover” .
Step9.Removethetwoscrewsthatsecurethepowersupplyconnectortothemetalbracket.1
Step10.Disconnectthetwopowercablesfromthemotherboard.2
Step11.Removethetwoscrewsthatsecurethepowersupplytothechassis,andthenslideoutthepower
supplyasshown.3
1
3
2
2
Step12.Toinstallthenewpowersupply:
a.Lineupthenewpowersupplywiththemountingholesonthechassis,thenslidethenew
powersupplyintoposition,secureittothechassisusingthefourscrews.
b.Connectthepowercablestothemotherboard.
Step13.ReattachtheEMIcover,middlecover,opticaldrive,computerstandandtherearcover.
Replacingtheheat-sink
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Chapter8.Replacinghardware45
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