Lenovo 3120, 3122, 3126, 3128

6.Pivottheopticaldriveupwardanddisconnectthepowersupplyassemblycablesfromalldrivesand

frompowerconnectors1and2onthesystemboard.

Figure33.Powerconnectorsonthesystemboard

Note:Youmightalsoneedtoreleasethepowersupplyassemblycablesfromsomecableclipsorties

thatsecurethecablestothechassis.Makesurethatyounotethecableroutingbeforedisconnecting

thecables.

7.Attherearofthecomputer,removethethreescrewsthatsecurethepowersupplyassembly.Pressthe

powersupplyclip1downwardtoreleasethepowersupplyassemblyandthenslidethepowersupply

assemblytothefrontofthecomputer.Liftthepowersupplyassemblyoutofthecomputer .

Figure34.Removingthepowersupplyassembly

Chapter2.Installingorreplacinghardware39

Contents

Main Page Contents Importantsafetyinformation.....iii Chapter1.Productoverview......1 Chapter2.Installingorreplacing hardware...............13 Chapter3.Recoveryinformation...55 Chapter4.UsingtheSetupUtility program................61 Chapter7.Gettinginformation,help, andservice..............75 AppendixA.Notices..........79 ii Index..................83 Importantsafetyinformation Page Chapter1.Productoverview Features Page Page Specications Softwareoverview SoftwareprovidedwithyourWindowsoperatingsystem SoftwareprovidedbyLenovo Page LenovoSolutionCenter LenovoThinkVantageToolbox AdobeReader Antivirussoftware Locations Page 8 Page Locatingcomponents Locatingpartsonthesystemboard Locatinginternaldrives Page Chapter2.Installingorreplacinghardware Handlingstatic-sensitivedevices Installingorreplacinghardware Installingexternaloptions Openingthecomputercover Removingandreinstallingthefrontbezel Accessingthesystemboardcomponentsanddrives Installingorreplacingamemorymodule InstallingorreplacingaPCIcard Page Page Installingorreplacingthecardreader Installingthecardreader Page Page Replacingthecardreader Page Replacingthebattery Replacingthehar ddiskdrive Page Page Replacingtheopticaldrive Page Page Replacingtheheatsinkandfanassembly Page Page Replacingthepowersupplyassembly Page Page Page Page Replacingthemicroprocessor Page Page Replacingtheinternalspeaker Page Page Page Page ReplacingthefrontaudioandUSBassembly Page Replacingthekeyboard Replacingthemouse Completingthepartsreplacement Page Erasingalostorforgottenpassword(clearingCMOS) Chapter3.Recoveryinformation Creatingandusingrecoverymedia Creatingrecoverymedia Usingrecoverymedia Performingbackupandrecoveryoperations Performingabackupoperation Performingarecoveryoperation UsingtheRescueandRecoveryworkspace Creatingandusingarescuemedium Creatingarescuemedium Usingarescuemedium Installingorreinstallingdevicedrivers Solvingrecoveryproblems Page Chapter4.UsingtheSetupUtilityprogram StartingtheSetupUtilityprogram Viewingorchangingsettings Usingpasswords Passwordconsiderations Power-onpassword Administratorpassword Setting,changing,ordeletingapassword Enablingordisablingadevice Selectingastartupdevice Selectingatemporarystartupdevice Viewingorchangingthestartupdevicesequence ExitingtheSetupUtilityprogram Chapter5.Updatingsystemprograms Usingsystemprograms Updating(ashing)theBIOSfromadisc Updating(ashing)theBIOSfromyouroperatingsystem RecoveringfromaPOSTandBIOSupdatefailure Page Page Chapter6.Troubleshootinganddiagnosticprograms Basictroubleshooting Diagnosticprogr ams LenovoSolutionCenter LenovoThinkVantageToolbox PC-DoctorforDOS Creatingadiagnosticdisc Runningthediagnosticprogramfromthediagnosticdisc Cleaningthemouse Opticalmouse Non-opticalmouse Page Page Chapter7.Gettinginformation,help,andservice Informationresources OnlineBooksfolder LenovoThinkVantageT ools LenovoWelcome AccessHelp Safetyandwarranty LenovoWebsite(http://www.lenovo.com) LenovoSupportWebsite Helpandservice Usingthedocumentationanddiagnosticprograms Callingforservice Usingotherservices Purchasingadditionalservices AppendixA.Notices Page Trademarks Page Index A B C D K L 84 M N T U V W