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Lenovo 4479, 4495, 4497, 4499, 4504, 4513, 4517, 4524, 7021, 7032, 7034, 7049, 7052, 7053, 7073, 7136, 7178 Replacingtherearfanassembly

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6.Insertthetwotabs2ofthenewfrontfanassemblyintothecorrespondingholesinthechassis,and

presstheothertwotabs1throughtheholesuntilthefrontfanassemblyissecuredinplace.

Figure42.Installingthefrontfanassembly

7.Connectthefrontfanassemblycabletothepowerfanconnectoronthesystemboard.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Replacingtherearfanassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”

intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre

SafetyandWarrantyGuide,goto:

http://www.lenovo.com/support

Thissectionprovidesinstructionsonhowtoreplacetherearfanassembly.

Toreplacetherearfanassembly,dothefollowing:

1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage32.

58ThinkCentreUserGuide

Contents

Main Page Page Page Contents Importantsafetyinformation.....vii Chapter1.Productoverview......1 Chapter2.Usingyourcomputer...15 Chapter3.Youandyourcomputer..21 Chapter6.Recoveryinformation...67 Chapter7.UsingtheSetupUtility program................75 iv Chapter8.Updatingsystem programs...............81 Chapter9.Preventingproblems...83 Page Page Importantsafetyinformation Serviceandupgrades Staticelectricityprevention Powercordsandpoweradapters Extensioncordsandrelateddevices Plugsandoutlets Externaldevices Heatandproductventilation Operatingenvironment Modemsafetyinformation Lasercompliancestatement Powersupplystatement Cleaningandmaintenance RussiaComplianceMarkforMarketAccess Page Chapter1.Productoverview Features Page Page Page Specications Softwareoverview SoftwareprovidedbyLenovo LenovoThinkVantageTools ThinkVantageProductivityCenter LenovoWelcome FingerprintSoftware LenovoThinkVantageToolbox ProductRecovery ThinkVantageClientSecuritySolution ThinkVantagePasswordManager ThinkVantagePowerManager ThinkVantageRescueandRecovery Page Locatingconnectorsontherearofyourcomputer 10 Locatingcomponents Locatingpartsonthesystemboard Figure4Systemboardpartslocationsonpage12showsthelocationsofthepartsonthesystemboard. 12 Locatinginternaldrives Machinetypeandmodellabel Page Chapter2.Usingyourcomputer Frequentlyaskedquestions Usingthekeyboard UsingWindowsshortcutkeys UsingtheblueThinkVantagebutton Usingangerprintreader Usingthewheelmouse Adjustingaudio Aboutyourcomputeraudio Settingthevolumefromthedesktop SettingthevolumefromControlPanel UsingCDsandDVDs HandlingandstoringCDandDVDmedia PlayingaCDorDVD RecordingaCDorDVD Page Chapter3.Youandyourcomputer Accessibilityandcomfort Arrangingyourworkspace Comfort Glareandlighting Aircirculation Electricaloutletsandcablelengths RegisteryourcomputerwithLenovo Movingyourcomputertoanothercountryorregion Voltage-selectionswitch Replacementpowercords Page Chapter4.Security Securityfeatures Page Attachinganintegratedcablelock Usingpasswords BIOSpasswords Windowspasswords SettinguptheintegratedSecurityChip SettingtheSecurityChip Usingandunderstandingrewalls Protectingdataagainstviruses Page Chapter5.Installingorreplacinghardware Handlingstatic-sensitivedevices Installingorreplacinghardware Installingexternaloptions Removingthecomputercover Removingandreinstallingthefrontbezel InstallingorreplacingaPCIcard Page Installingorreplacingamemorymodule Page Installingorreplacingtheopticaldrive Page Page Installingorreplacingthecardreader Installingthecardreader Page Replacingthecardreader Page Replacingthebattery Replacingthepowersupplyassembly Page Replacingtheheatsinkandfanassembly Page Replacingthemicroprocessor Page Page Replacingtheprimaryharddiskdrive Page Replacingthesecondaryharddiskdrive Page Replacingthefrontfanassembly Replacingtherearfanassembly Page ReplacingthefrontaudioandUSBassembly Replacingtheinternalspeaker Page Replacingthekeyboardormouse Completingthepartsreplacement Obtainingdevicedrivers Page Chapter6.Recoveryinformation Creatingandusingrecoverymedia Creatingrecoverymedia Usingrecoverymedia Performingbackupandrecoveryoperations Performingabackupoperation Performingarecoveryoperation UsingtheRescueandRecoveryworkspace Creatingandusingarescuemedium Creatingarescuemedium Usingarescuemedium Reinstallingpreinstalledapplicationsanddevicedrivers Reinstallingsoftwareprograms Reinstallingdevicedrivers Solvingrecoveryproblems Page Chapter7.UsingtheSetupUtilityprogram StartingtheSetupUtilityprogram Viewingandchangingsettings Usingpasswords Passwordconsiderations Power-OnPassword AdministratorPassword HardDiskPassword Setting,changing,anddeletingapassword Erasinglostorforgottenpasswords(clearingCMOS) Enablingordisablingadevice Selectingastartupdevice Selectingatemporarystartupdevice Selectingorchangingthestartupdevicesequence EnablingErPcompliancemode Smartperformancechoices ExitingfromtheSetupUtilityprogram Page Chapter8.Updatingsystemprograms Usingsystemprograms Updating(ashing)theBIOSfromadisc Updating(ashing)theBIOSfromyouroperatingsystem RecoveringfromaPOS T/BIOSupdatefailure Chapter9.Preventingproblems Keepingyourcomputercurrent Gettingthelatestdevicedriversforyourcomputer Updatingyouroperatingsystem UsingSystemUpdate Cleaningandmaintenance Basics Cleaningyourcomputer Computer Keyboard Opticalmouse Displayscreen Goodmaintenancepractices Movingyourcomputer Page Page Chapter10.Troubleshootinganddiagnostics Basictroubleshooting Troubleshootingprocedure Troubleshooting Audioproblems NoaudioinWindows AnaudiodiscorAutoPlay-enableddiscdoesnotautomaticallyplaywhenitis insertedintoadrive Soundcomesfromoneexternalspeakeronly NoaudioinDOSapplicationsorgames CDproblems AnaudiodiscorAutoPlay-enableddiscdoesnotautomaticallyplaywhenitis insertedintoaCDdrive ACDorDVDdoesnotwork Unabletouseastartable(bootable)recoverymedium,suchastheProductRecovery CD,tostartyourcomputer DVDproblems BlackscreeninsteadofDVDvideo DVDmoviewillnotplay NoaudioorintermittentaudiowhileplayingDVDmovie Playbackisverysloworchoppy Invaliddiscornodiscfoundmessage Intermittentproblems Keyboard,mouse,orpointingdeviceproblems Allorsomekeysonthekeyboarddonotwork Themouseorpointingdevicedoesnotwork Thepointeronthescreendoesnotmovesmoothlywiththemouse Thengerprintreaderdoesnotwork Thewirelesskeyboarddoesnotwork Monitorproblems Wrongcharactersappearonthescr een Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiod ofcomputerinactivity Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustart someapplicationprograms Theimageappearstobeickering Theimageisdiscolored Networkingproblems Ethernetproblems AwirelessLANproblem AwirelessWANproblem Bluetoothproblems Optionproblems Anoptionthatwasjustinstalleddoesnotwork Anoptionthatpreviouslyworkeddoesnotworknow Performanceandlockupproblems Insufcientfreeharddiskdrivespace Page Excessivenumberoffragmentedles Insufcientmemory Printerproblems Serialportproblems Softwareproblems Whenusingasortfeature,datesdonotsortinthecorrectorder Softwaredoesnotworkasexpected USBproblems Diagnosticprograms LenovoThinkVantageT oolbox PC-DoctorforDOS Creatingadiagnosticdisc Runningthediagnosticprogramfromadiagnosticdisc Chapter11.Gettinginformation,help,andservice Informationresources LenovoThinkVantageT ools ThinkVantageProductivityCenter LenovoWelcome SafetyandWarranty LenovoWebsite(http://www.lenovo.com) LenovoSupportWebsite Helpandservice Usingthedocumentationanddiagnosticprograms Callingforservice Usingotherservices Purchasingadditionalservices AppendixA.Regulatoryinformation Exportclassicationnotice Televisionoutputnotice EU-EMCDirective(2004/108/EC)EN55022classBStatementof Compliance Page AppendixB.WEEEandrecyclingstatements EuropeanUnion(EU)WEEEstatement Japanrecyclingstatements Page AppendixC.Powercordnotice 118 Page Page AppendixD.Notices Trademarks Index A B C D K L 124 M N T U V W