Lenovo IdeaCentre K450 Desktop User Manual

IdeaCentreK4SeriesHardwareMaintenanceManualideaideaideaCentreideaMachineTypes:10120/90A0[K450ES];10121/90A1[K450Non-ES]

Observethefollowingruleswhenworkingonelectricalequipment.Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoftmateri

–Sendanotherpersontogetmedicalaid.SafetyinspectionguideTheintentofthisinspectionguideistoassistyouinidentifyingpotentiallyunsafeconditionsontheseprodu

•Avoidcontactwithotherpeoplewhilehandlingthepart.•Wearagroundedwriststrapagainstyourskintoeliminatestaticonyourbody.•Preventthepartfromtouchingyourclo

ToConnectToDisconnect1.TurneverythingOFF .2.First,attachallcablestodevices.3.Attachsignalcablestoconnectors.4.Attachpowercordstooutlet.5.TurndeviceON.

≥18kg(37lbs)≥32kg(70.5lbs)≥55kg(121.2lbs)CAUTION:Usesafepracticeswhenlifting.CAUTION:Thepowercontrolbuttononthedeviceandthepowerswitchonthepowersupply

Chapter3.GeneralinformationThischapterprovidesgeneralinformationthatappliestoallmachinetypessupportedbythispublication.SpecicationsThissectionliststh

10IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter4.GeneralCheckoutAttention:Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartupsequencechanged.Beextremelycarefuldurin

12IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter5.UsingtheSetupUtilityTheSetupUtilityprogramisusedtoviewandchangethecongurationsettingsofyourcomputer,regardlessofwhichoperatingsystemyouareus

AdministratorPasswordSettinganAdministratorPassworddetersunauthorizedpersonsfromchangingcongurationsettings.YoumightwanttosetanAdministratorPasswordi

TosetaPower-OnPassword,dothefollowing:1.StarttheLenovoBIOSSetupUtilityprogram(See”StartingtheLenovoBIOSSetupUtilityprogram”onpage13.)2.FromtheSecurity

USBSetuppresstheEnterkey,andthenselectUSBFunctions.ATADeviceSetuppresstheEnterkey.SelectCongureSATAas,presstheEnterkeyandthenselectSATAmode.AudioSetu

b.Ifyouhavechangedthesesettingsandwanttoreturntothedefaultsettings,selectLoadOptimalDefaultsfromthemenu.ExitingtheLenovoBIOSSetupUtilityprogramAfteryo

18IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter6.Symptom-to-FRUIndexTheSymptom-to-FRUindexlistserrorsymptomsandpossiblecauses.Themostlikelycauseislistedrst.AlwaysbeginwithChapter4,“GeneralC

POSTerrorcodesEachtimeyouturnthecomputeron,itperformsaseriesofteststocheckthatthesystemisoperatingcorrectlyandthatcertainoptionsareset.Thisseriesoftes

Chapter7.LocationsThissectionprovidesillustrationstohelplocatethevariousconnectors,controlsandcomponentsofthecomputer.IdentifyinginternalcomponentsThe

IdeaCentreK450Le novo K4501 2 3 47689515161718 1410112122 20 1912132324252627112Vpowerconnector15Frontpanelconnector2Microprocessorandheatsink16FrontU

Chapter8.ReplacinghardwareAttention:Donotremovethecomputercoverorattemptanyrepairbeforereadingthe“Importantsafetyinformation”intheSafetyandWarrantyGui

IdeaCentreK4SeriesHardwareMaintenanceManualMachineTypes:10120/90A0[K450ES];10121/90A1[K450Non-ES]

ReplacingthekeyboardandmouseNote:YourkeyboardwillbeconnectedtoaUSBconnectorateitherfrontorattherearofthecomputer.Toreplacethekeyboard:Step1.Removeanym

Step5.Slidethecomputercoverouttoremoveit.Step6.Toreinstallthecomputercover:a.Lineupthecomputercoverwiththechassisthenslideitback.b.Securethecomputerco

Step2.Removethefrontbezelbyreleasingthethreeplastictabsinsidethechassisandslidingthebezeloutasshown.Step3.Toreattachthebezel,aligntheplastictabsontheb

Step4.Positionthenewmemorymoduleoverthememoryconnector.Makesurethatthenotch1onthememorymodulealignscorrectlywiththeconnectorkey2onthesystemboard.Pusht

Step4.Removetheharddiskdrivefromtheplasticbracketasshown.Step5.Lineupthenewharddiskdrivewiththeplasticbracketandsnapitintoposition.Step6.Slidethenewha

ReplacingagraphicscardNote:Forthisprocedure,ithelpstolaythecomputerat.Toreplaceagraphicscard:Step1.Removethecomputercover.Referto“Removingthecomputer

b.Removethescrewthatsecuresthegraphicscardlatchtothechassis,openit,andremovetheDuo-graphicscardsconnector.1234c.Removethegraphicscardbypullingitstraig

a.Removethescrewthatsecuresthegraphicslatchtothechassisandopenit.123b.Removethegraphicscardbypullingitstraightoutoftheconnector.Step3.Installthenewada

ToreplacetheTV-Tunercard:Step1.Removethecomputercover.Referto“Removingthecomputercover”.Step2.Removethescrewthatsecuresthegraphicscardlatchtothechassi

Step6.Reattachthecomputercover.ReplacingthePowersupplyNote:Forthisprocedure,ithelpstolaythecomputerat.ToreplacethePowersupply:Step1.Removeanymedia(di

FirstEdition(May2013)24th©CopyrightLenovo2013.LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwarearedeliveredpursuantaGeneralServicesAdministration“GSA”

Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperatingsystem,andturnoffthecomputerandallattacheddevices.Step2.Unplugallp

Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)cables,andanyothercablesthatareconnectedtothecomputer.Referto“L

Step4.Removethecomputercover.Referto“Removingthecomputercover”.Step5.Removethemicroprocessorfan.Referto“Replacingthemicroprocessorfan”.Step6.Removethe

Step8.Holdingthesidesofthemicroprocessorwithyourngers,removetheprotectivecover1thatprotectsthegoldcontactsonthenewmicroprocessor.2Step9.Holdingthesid

ToreplacetheWi-Ficard:Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperatingsystem,andturnoffthecomputerandallattachedde

Step2.Unplugallpowercordsfromelectricaloutlets.Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)cables,andanyoth

40IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter9.GeneralinformationThischapterprovidesgeneralinformationthatappliestoallmachinetypessupportedbythispublication.AdditionalServiceInformationThi

ContentsChapter1.Aboutthismanual...1ImportantSafetyInformation...1Chapter2.Safetyinformation...3Generalsafety...3Electricals

ivIdeaCentreK4SeriesHardwareMaintenanceManual

Chapter1.AboutthismanualThismanualcontainsserviceandreferenceinformationforIdeaCentreK450computerslistedonthecover.Itisintendedonlyfortrainedservicers

2IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter2.SafetyinformationThischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.GeneralsafetyFollowtheserulestoen