Lenovo 4162 Manual do Utilizador descarregar pdf (Página 30)

Replacingthepowersupplyassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”

intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.T oobtainacopyoftheThinkCentre

SafetyandWarrantyGuide,goto:

http://www.lenovo.com/support

Thissectionprovidesinstructionsonhowtoreplacethepowersupplyassembly.

Althoughtherearenomovingpartsinyourcomputerafterthepowercordhasbeendisconnected,the

followingwarningsarerequiredforyoursafetyandproperUnderwritersLaboratories(UL)certication.

DANGER

Hazardousmovingparts.Keepngersandotherbodypartsaway.

CAUTION:

Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.

Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabel

attached.Therearenoserviceablepartsinsidethesecomponents.Ifyoususpectaproblemwith

oneoftheseparts,contactaservicetechnician.

Toreplacethepowersupplyassembly,dothefollowing:

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect

allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.

2.Removethecomputercover.See“Removingthecomputercover”onpage14.

3.Disconnectthepowersupplyassemblycablesfromalldrivesandfromthe24-pinpowerconnectorand

4-pinpowerconnectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage9.

Note:Youmightalsoneedtoreleasethepowersupplyassemblycablesfromsomecableclipsorties

thatsecurethecablestothechassis.

4.Laythecomputeronitssideandremovethefourscrewsthatsecurethepowersupplyassembly.Then,

slidethepowersupplyassemblytothefrontofthechassis.

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