Lenovo A720 User Manual Page 1

IdeaCentreA720HardwareMaintenanceManualideaideaideaCentreidea

Observethefollowingruleswhenworkingonelectricalequipment.Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoftmateri

–Switchoffpower.–Sendanotherpersontogetmedicalaid.SafetyinspectionguideTheintentofthisinspectionguideistoassistyouinidentifyingpotentialhazardsposedby

•Keepthepartsinprotectivepackagesuntiltheyareinsertedintotheproduct.•Avoidcontactwithotherpeoplewhilehandlingthepart.•Wearagroundedwriststrapagainstyo

ToConnectToDisconnect1.TurneverythingOFF.2.First,attachallcablestodevices.3.Attachsignalcablestoconnectors.4.Attachpowercordstooutlet.5.TurndeviceON.1

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

Chapter3.GeneralinformationThischapterprovidesgeneralinformationthatappliestoallcomputermodelscoveredbythismanual.SpecicationsThissectionliststhephys

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Chapter4.GeneralCheckoutAttention:Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartupsequencemayhavebeenchanged.Beextremelyc

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Chapter5.UsingtheSetupUtilityTheSetupUtilityprogramisusedtoviewandchangethecongurationsettingsofyourcomputer,regardlessofwhichoperatingsystemyouareus

AdministratorPasswordSettinganAdministratorPassworddetersunauthorizedpersonsfromchangingcongurationsettings.YoumightwanttosetanAdministratorPasswordi

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

SelectATADeviceSetup,presstheEnterkey,thenselectSATAMode.SelectAudioSetup,presstheEnterkey,thenselectOnboardAudioController.SelectNetworkSetup,pressth

a.Ifyoudonotwanttosavethesettings,selectDiscardchangesandExitfromthemenu.b.Ifyouhavechangedthesesettingsandwanttoreturntothedefaultsettings,selectLoad

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

POSTerrorcodesEachtimeyouturnthecomputeron,itperformsaseriesofteststocheckthatthesystemisoperatingcorrectlyandthatcertainoptionsareset.Thisseriesoftes

Chapter7.Locatingconnectors,controlsandcomponentsThissectionprovidesillustrationstohelplocatethevariousconnectors,controlsandcomponentsofthecomputer.F

LeftandrightviewThefollowingillustrationshowsthelocationofconnectors,controlsandcomponentsontheleftandrightsideofthecomputer.2 3 4 6 85910711.Airvents

RearviewThefollowingillustrationshowsthelocationofconnectorsandcomponentsontherearofthecomputer.1 238764 51.TVtunerconnector(selectedmodelsonly)5.USB2

IdeaCentreA720HardwareMaintenanceManual

HardwarecomponentsThefollowingillustrationshowsthecomponentsthatmakeupyourcomputer.4 5 6 791011121314151617181920218232425262728293031221.Systemfan17.

IdentifyingpartsonthemotherboardThemotherboard(sometimescalledtheplanarorsystemboard)isthemaincircuitboardinyourcomputer.Itprovidesbasiccomputingfunct

Thefollowingillustrationshowsthelocationofconnectorsandcomponentsonthebackofthemotherboard.23.TV-Tunercardconnector24.Battery26IdeaCentreA720HardwareM

IdentifyingpartsonthebackoftheLEDpanelThefollowingillustrationshowsthecomponentsandcontrolsonthebackofLEDpanel.1 2 3456781.Bluetoothmodule5.Frontfunct

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Chapter8.ReplacinghardwareAttention:Donotremovethecomputercoverorattemptanyrepairbeforereadingthe“Importantsafetyinformation”intheSafetyandWarrantyGui

ReplacingthekeyboardandmouseAttention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.ToreplacethekeyboardandmouseStep1.Remo

Step2.Locatetheconnectorforthepowercord.Referto“Rearview” .Step3.Disconnectthefailingpowercordandadapterfromthecomputerandconnectthenewpowercordandada

Step5.Returnthecomputertoanuprightposition,thenliftthebasecoverupandslideitoutasshown.Step6.Toreattachthebasecover:a.Lineupthebasecoverwiththebase,sli

Step5.Removethe2screwsthatsecuretheharddiskdrivetothemotherboard.1Step6.Disconnectthedataandpowercablefromtheharddiskdrive.2112Step7.Slidetheharddiskd

c.Securethenewharddiskdrivetomotherboardwiththe2screws.d.Connectthedataandpowercabletothenewharddiskdriveandmotherboard.Step10.Reattachthebasecoverand

Step5.Removethe3screwsthatsecurethesystemfantotheheat-sink.1Step6.Disconnectthepowercablefromthemotherboard.2Step7.Liftthesystemfanuptoremoveit.3123St

Step7.Removetheheat-sinkbyliftingitup.Attention:Placetheheat-sinkupsidedownonaatsurfacetopreventthermalgreasefromcontaminatingothercomponents.Attenti

Step8.Liftthemicroprocessorstraightupandoutofthesocket.31 23Attention:Donottouchthegoldcontactsonthebottomofthemicroprocessor.Whenhandlingthemicroproc

Step11.Lowerthemicroprocessorstraightdownintoitssocketonthemotherboard.Step12.Tosecurethemicroprocessorinthesocket,closethemicroprocessorretainerandlo

Step6.Removethe3screwsthatsecuretheopticaldrivetothemotherboardandliftituptoremoveit.Step7.Removethe5screwsthatsecuretheopticaldrivetothebracketanddis

ReplacingthesolidstatediskNote:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.ToreplacethesolidstatediskStep1.Removeanymedi

Step6.Liftuptheopticaldriveejectboardtoremoveit.Step7.Toinstallthenewopticaldriveejectboard:a.Connectthenewopticaldriveejectboardtothemotherboard.b.Se

Step14.Removethe8screwsthatsecurethemotherboardtothechassisandslideitoutasshown.Step15.Removethe2screwsthatsecuretheTV-Tunercardtothemotherboard.Step1

Step18.Useaatheadscrewdriverasalevertopriseoutthebatteryasshown.Step19.Toinstallthenewmotherboard:a.Insertthebattery(CR2032)intothesocketwiththesidel

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

Step10.Removethe8screwsthatsecurethemotherboardtothechassisandslideitoutasshown.Step11.Removethe4screwsthatsecurethespeakersystemtothemotherboard.Step

ReplacingtheTVtunercardNote:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.ToreplacetheTVtunercardStep1.Removeanymedia(disk

Step13.PulltheTV-Tunercardupwardtoremoveitfromthecardportonthemotherboard.Step14.ToinstallthenewTV-Tunercard:a.InsertthenotchedendoftheTV-Tunercardint

Step10.Removethe8screwsthatsecurethemotherboardtothechassisandslideitoutasshown.Step11.Useaatheadscrewdriverasalevertopriseoutthebatteryasshown.Step1

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

Step8.Reattachthebasecoverandsecureitwiththescrews.RemovingtherearcoverNote:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Step7.Puttheheadofaatheadscrewdriverbetweenthemiddleframeandtherearcoverasshown.Thenusingthescrewdriverasaleverandthemiddleframemetalbarasthefulcrum,

Step8.Removethescalarshieldingandsetitaside.Step9.Disconnectallthecablesfromthescalarboard.Step10.Removethe5screwsthatsecurethescalarboardtothemiddlef

a.Lineuptheholesonthenewscalarboardwiththemountingholesonthemiddleframeandsecureitwiththe5screws.b.Connectallthecablestothenewscalarboard.c.Reattachth

a.Lineuptheholesonthenewtouchcontrolboardwiththemountingholesonthemiddleframeandsecureitwiththe2screws.b.Connectallthecablestothenewtouchcontrolboard.

ivIdeaCentreA720HardwareMaintenanceManual

Step10.Toinstallthenewconverterboard:a.Lineuptheholesonthenewconverterboardwiththemountingholesonthemiddleframeandsecureitwiththe4screws.b.Connectthe2

Step8.RemovethescrewthatsecuresthepowerswitchboardtotheLEDpanelandliftupthepowerswitchboardtoremoveit.Step9.Toinstallthepowerswitchboard:a.Lineuptheho

Step6.Removetherearcover.Referto“Removingtherearcover”.Step7.UseasmallatheadscrewdrivertoprisetheBluetoothmoduleawayfromthesocket.12Step8.Disconnectt

Step9.LiftuptheWLANcardtoremoveitfromthesocket.1111243Step10.ToinstallthenewWLANcard:a.ConnectthedatacabletothenewWLANcard.b.LineupthenewWLANcardwitht

Step8.Liftupthecamera2anddisconnectthedatacablefromthecamera.31231Step9.Toinstallthenewcamera:a.Connectthedatacabletothenewcamera.b.Lineuptheholesinth

Step9.Liftupthefrontfunctionboardtoremoveitfromthefrontbezel.33121Step10.Toinstallthenewfrontfunctionboard:a.Connectthedatacabletothenewfrontfunctionb

Step7.Removethescalarboard.Referto“Replacingthescalarboard”.Step8.Removethetouchcontrolboard.Referto“Replacingthetouchcontrolboard”.Step9.Removethecon

Step17.Removethe6screwsthatsecurethehingetothemiddleframeandsetthehingeaside.Step18.ToinstallthenewtheLEDpanel:a.Lineuptheholesonthehingewiththemounti

4 5 6 79101112131415161718192021823242526272829303122Item#FRUsServicePartNumber(FRU#)CRUIDMotherboardA7201G_DDR3W/HDINW/TV1MB90000165NA7202G_DDR3W/HDI

AudioNRealtekALC272-VA473040715NMemoryM471B5773DH0-CK01-100226NHMT325S6CFR8C-PB1-100227NMT8KTF25664HZ-1G6M11-100228NElp_RJ2108BDBG-GN-F2GBD3-1600SMEMO

Chapter1.AboutthismanualThismanualcontainsserviceandreferenceinformationforIdeaCentreA720computerslistedonthecover.Itisintendedonlyfortrainedservicers

PowerSupplyFSP150-RAB150Wadapter®36-0018761LietonPA-1151-11VA150wadapter(R)36-0018751Heat-sinkA720CoolMasterDIS45WHeatSink90200583N31A720AVCDIS45WHeat

TouchcontrolboardMastouch27"PCTtouchpanelwin873041906NAUOM270HW02V3Ultra-slimMVA-LED18200174NA720MastouchTouchModule90400015NA7203MLCDTouchModule

LiteonSK-8861(LA-AR)S-SilkKB-Silver（WW）902005692MouseLiteonSM-8861(WW)MouseSilver（WW）902005702LiteonSM-8861Mouse(MY)Silver（WW）902005712LiteonSM-8861Mo

LongwellBlackSingle-end1.0mSAC5PowerCable®310391051Volex1.0mC5SAPowerCable310495011MechanicalA720BaseCoverW/BCASW/TV2W/HDMI90200744NA720BaseCoverW/OBC

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Chapter9.GeneralinformationThischapterprovidesgeneralinformationthatappliestoallcomputermodelscoveredbythismanual.AdditionalServiceInformationThischap

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Chapter2.SafetyinformationThischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.GeneralsafetyFollowtheserulestoen