Lenovo IdeaCentre B750 All-in-One User Manual

IdeaCentreB750HardwareMaintenanceManualideaideaideaCentreideaMachineTypes:10144/F0AA

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

10IdeaCentreB750HardwareMaintenanceManual

Chapter4.GeneralCheckoutAttention:Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartupsequencechanged.Beextremelycarefuldurin

12IdeaCentreB750HardwareMaintenanceManual

Chapter5.UsingtheSetupUtilityTheSetupUtilityprogramisusedtoviewandchangethecongurationsettingsofyourcomputer,regardlessofwhichoperatingsystemyouareus

AdministratorPasswordSettinganAdministratorPassworddetersunauthorizedpersonsfromchangingcongurationsettings.Y oumightwanttosetanAdministratorPassword

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

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

b.Ifyouhavechangedthesesettingsandwanttoreturntothedefaultsettings,selectLoadOptimalDefaultsfromthemenu.ExitingtheLenovoBIOSSetupUtilityprogramAfteryo

18IdeaCentreB750HardwareMaintenanceManual

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

POSTerrorcodesEachtimeyouturnthecomputeron,itperformsaseriesofteststocheckthatthesystemisoperatingcorrectlyandthatcertainoptionsareset.Thisseriesoftes

Chapter7.Locatingconnectors,controlsandcomponentsThissectionprovidesillustrationstohelplocatethevariousconnectors,controlsandcomponentsofthecomputer.F

LeftandrightviewThefollowingillustrationshowsthelocationofconnectors,controlsandcomponentsontheleftandrightsideofthecomputer.67123451.USB3.0connecto5.

RearviewThefollowingillustrationshowsthelocationofconnectorsandcomponentsontherearofthecomputer.13254 6871.TVtunerconnector(selectedmodelsonly)5.USB3.

IdeaCentreB750HardwareMaintenanceManualMachineTypes:10144/F0AA

HardwarecomponentsThefollowingillustrationshowsthecomponentsthatmakeupyourcomputer.23679101112131415161718192045181.Rearcover11.B-CAScardreader2.Compu

IdentifyingpartsonthemotherboardThemotherboard(sometimescalledtheplanarorsystemboard)isthemaincircuitboardinyourcomputer.Itprovidesbasiccomputingfunct

26IdeaCentreB750HardwareMaintenanceManual

Chapter8.ReplacinghardwareAttention:Donotremovethecomputercoverorattemptanyrepairbeforereadingthe“Importantsafetyinformation”intheSafetyandWarrantyGui

ReplacingthekeyboardandmouseAttention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.ToreplacethekeyboardandmouseStep1.Remo

Step3.Disconnectthefailingpowercordandadapterfromthecomputer.Step4.Connectthenewpowercordtothesameconnectorasshown.RemovingthecomputercoverAttention:T

a.Lineupthecoverpieceswiththechassisthenslidethemback.ReplacingamemorymoduleAttention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovin

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

Step8.Installthenewharddiskdriveasfollows:a.Attachtheshieldingtothenewharddiskdrive,andsecureittotheharddiskdrivewiththetwoscrews.b.Lineupthenewharddi

Step8.Useasmallatheadscrewdrivertopressandpushoutthepinsthatsecurethecovertothedisk.23Step9.Separatethecoverfromthedefectiveopticaldriveasshown.123St

FirstEdition(September2013)3rd©CopyrightLenovo2013.LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwarearedeliveredpursuantaGeneralServicesAdministration

Step4.Removethefourscrewsthatsecurethecomputerstandtothechassis,thenliftupthecomputerstandtoremoveit.12Step5.Toreinstallthecomputerstand:a.Lineuptheco

Step7.Removethefourteenscrewsthatsecurethemiddlecovertothechassis.Step8.Liftupthemiddlecoverfromthebottomtoremoveit.Step9.Toreattachthemiddlecover:a.L

Step8.Removethescrewthatsecurestheconverterboardtothechassisandthenliftuptheconvertertoremoveit.1Step9.Disconnectthe2cablesfromtheconverterboard.Step1

Step8.Pushthetwopintoreleasethecamera1,thenliftthecameraout.2Step9.Disconnectthedatacablefromthecamera.3Step10.Pushthepinstoreleasethecameraoutofhousi

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

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

Step9.Disconnectthesubwoofercablefromtheconnectoronmotherboard.1Step10.Liftupthesubwoofertoremoveit.2Step11.Toinstallthenewsubwoofer:a.Lineupthenewsub

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

RemovingthepowersupplyAttention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.Note:Itmaybehelpfultoplacethecomputerface-do

Step10.Disconnectthetwopowercablesfromthemotherboard.Step11.Removethethreescrewsthatsecurethepowersupplytothechassis,andthenliftupthepowersupplyasshow

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

Step9.Disconnecttheantennacable(s)fromtheTV-T unercard.1Step10.RemovethescrewthatsecurestheTV-Tunercardtothemotherboard.2Step11.PulltheTV-Tunercardupw

Step9.DisconnecttheantennacablesfromtheWi-Ficard.1Step10.RemovethescrewthatsecurestheWi-Ficardtothemotherboard.2Step11.LiftuptheWi-Ficardupwardtoremov

Step9.Disconnectthefanpowercablefromthemotherboard.Step10.Removethethreescrewsthatsecurethesystemfantotheheat-sink1andliftthesystemfanuptoremoveit.2St

Step10.Removetheeightscrewsthatsecuretheheat-sinktothemotherboard,andthenliftuptheheat-sinktoremoveit.Step11.Toinstallthenewheat-sink:a.Lineupthenewhe

Step12.Liftthemicroprocessorstraightupandoutofthesocket.3Attention:Donottouchthegoldcontactsonthebottomofthemicroprocessor.Whenhandingthemicroprocesso

Important:Toavoiddamagingthemicroprocessorcontacts,keepthemicroprocessorcompletelylevelwhileinstallingitintothesocket.Step15.Lowerthemicroprocessorstr

Step16.Removeallthecablesconnectedtothemotherboard,including:a.LVDScablesb.HarddiskdrivepowerandSATAcables.c.OpticaldiskdrivepowerandSATAcables.d.Powe

Step19.ReattachtheEMIcover,middlecover,opticaldrive,computerstandandtherearcover.ReplacingtheLEDpanelmoduleNote:Turnoffthecomputerandwait3to5minutesto

b.OpticaldiskdrivepowerandSATAconnectorandcables.52IdeaCentreB750HardwareMaintenanceManual

c.Wi-Fiantennacables.Chapter8.Replacinghardware53

ivIdeaCentreB750HardwareMaintenanceManual

d.LVDScables.12e.Convertercable.f.PowerboardcableStep17.Removethemotherboard.Referto“Replacingthemotherboard”.Step18.ToinstallthenewtheLEDpanelmodule:

Chapter9.GeneralinformationThischapterprovidesgeneralinformationthatappliestoallmachinetypessupportedbythispublication.AdditionalServiceInformationThi

Chapter1.AboutthismanualThismanualcontainsserviceandreferenceinformationforIdeaCentreB750computerslistedonthecover.Itisintendedonlyfortrainedservicers

2IdeaCentreB750HardwareMaintenanceManual

Chapter2.SafetyinformationThischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.GeneralsafetyFollowtheserulestoen