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Inhaltsverzeichnis

Seite 1

LenovoA540/A740HardwareMaintenanceManualMachineTypes:F0AN[A540];F0AM[A740]

Seite 2

Observethefollowingruleswhenworkingonelectricalequipment.Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoftmateri

Seite 3 - HardwareMaintenanceManual

–Switchoffpower.–Sendanotherpersontogetmedicalaid.SafetyinspectionguideTheintentofthisinspectionguideistoassistyouinidentifyingpotentialhazardsposedby

Seite 4

•Keepthepartsinprotectivepackagesuntiltheyareinsertedintotheproduct.•Avoidcontactwithotherpeoplewhilehandlingthepart.•Wearagroundedwriststrapagainstyo

Seite 5 - Contents

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

Seite 6

CAUTION:Thepowercontrolbuttononthedeviceandthepowerswitchonthepowersupplydonotturnofftheelectricalcurrentsuppliedtothedevice.Thedevicealsomighthavemor

Seite 7 - Chapter1.Aboutthismanual

Chapter3.GeneralinformationThischapterprovidesgeneralinformationthatappliestoallcomputermodelscoveredbythismanual.SpecificationsThissectionliststhephys

Seite 8

10LenovoA540/A740HardwareMaintenanceManual

Seite 9 - Chapter2.Safetyinformation

Chapter4.GeneralCheckoutAttention:Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartupsequencemayhavebeenchanged.Beextremelyc

Seite 10

12LenovoA540/A740HardwareMaintenanceManual

Seite 11 - Safetyinspectionguide

Chapter5.UsingtheSetupUtilityTheSetupUtilityprogramisusedtoviewandchangetheconfigurationsettingsofyourcomputer,regardlessofwhichoperatingsystemyouareus

Seite 13 - Chapter2.Safetyinformation7

AdministratorPasswordSettinganAdministratorPassworddetersunauthorizedpersonsfromchangingconfigurationsettings.Y oumightwanttosetanAdministratorPassword

Seite 14

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

Seite 15 - Chapter3.Generalinformation

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

Seite 16

a.Ifyoudonotwanttosavethesettings,selectDiscardchangesandExitfromthemenu.b.Ifyouhavechangedthesesettingsandwanttoreturntothedefaultsettings,selectLoad

Seite 17 - Chapter4.GeneralCheckout

18LenovoA540/A740HardwareMaintenanceManual

Seite 18

Chapter6.Symptom-to-FRUIndexTheSymptom-to-FRUindexlistserrorsymptomsandpossiblecauses.Themostlikelycauseislistedfirst.AlwaysbeginwithChapter4,“GeneralC

Seite 19 - Chapter5.UsingtheSetupUtility

POSTerrorcodesEachtimeyouturnthecomputeron,itperformsaseriesofteststocheckthatthesystemisoperatingcorrectlyandthatcertainoptionsareset.Thisseriesoftes

Seite 20

Chapter7.ReplacinghardwareAttention:Donotremovethecomputercoverorattemptanyrepairbeforereadingthe“Importantsafetyinformation”intheSafetyandWarrantyGui

Seite 21 - Enablingordisablingadevice

ReplacingthekeyboardandmouseAttention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.ToreplacethekeyboardandmouseStep1.Remo

Seite 22 - Selectingastartupdevice

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

Seite 23

LenovoA540/A740HardwareMaintenanceManualMachineTypes:F0AN[A540];F0AM[A740]

Seite 24

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

Seite 25 - Chapter6.Symptom-to-FRUIndex

Step5.Removethe4screwsthatsecuretheharddiskdrivetothemotherboard.Step6.Disconnectthedataandpowercablefromtheharddiskdrive.Chapter7.Replacinghardware25

Seite 26 - Undeterminedproblems

Step7.Removethe4screwsthatsecuretheharddiskdrivetothebracket,thenseparatetheharddiskdrivefromthebracket.Step8.Installthenewharddiskdriveasfollows:a.Se

Seite 27 - Chapter7.Replacinghardware

Step5.Pushoutthelatchesonbothsidesofthememorysockettoreleasethememorymodule.Gentlypullthememorymoduleupwardtoremoveitfromitssocket.Step6.Alignthenewme

Seite 28 - Replacingthekeyboardandmouse

Step7.Liftthesystemfanuptoremoveit.Step8.Lineupthenewsystemfan,thensecureittotheheat-sinkandconnectthenewpowercabletothemotherboard.Step9.Reattachtheb

Seite 29 - Removingthebasecover

Step7.Removetheheat-sinkbyliftingitup.Attention:Placetheheat-sinkupsidedownonaflatsurfacetopreventthermalgreasefromcontaminatingothercomponents.Attenti

Seite 30 - Replacingtheharddiskdrive

Step6.Removethe4screwsthatsecurethespeakersystemtothemotherboard.Step7.Detachthespeakerfromthechassis.Step8.Toinstallthenewspeakersystem:a.Attachthene

Seite 31 - .Replacinghardware25

Step9.Removethe3screwsthatsecurethemotherboardtothechassisandslideitoutasshown.Step10.Toinstallthenewmotherboard:a.Installthememorymoduletotheconnecto

Seite 32 - Replacingamemorymodule

Step5.DisconnectthetouchandLEDpanelcablesfromtheconnectorsonthemotherboard.Step6.Removethe6screwsthatsecurethehingetothechassis1,thenraisethehingetore

Seite 33 - Replacingthesystemfan

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

Seite 34 - Replacingtheheat-sink

FirstEdition(March2014)6th©CopyrightLenovo2014.LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwarearedeliveredpursuantaGeneralServicesAdministration“GSA

Seite 35 - Replacingthespeakersystem

Step7.SlidetheLEDpanelupwardfromthebottom(with“Lenovo”logo)ofthepanel.34LenovoA540/A740HardwareMaintenanceManual

Seite 36 - Replacingthemotherboard

Step8.OpenuptheLEDpanelfromthebottom1,removethe2screwsthatsecurethetransformboardtotherearcover2,andthendisconnectthe2cablesfromthetransformboard.3Ste

Seite 37 - Chapter7.Replacinghardware31

Step6.Removetherearcover.Referto“Removingtherearcover”.Step7.Removethe2screwsthatsecurethetransformboardtotherearcover,andthenliftituptoremoveit.Step8

Seite 38

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

Seite 39 - Chapter7.Replacinghardware33

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

Seite 40

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

Seite 41 - ReplacingtheTransformboard

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

Seite 42 - ReplacingtheWi-Ficard

Note:Itmaybehelpfultoplacethecomputerface-downonasoftflatsurfaceforthisprocedure.Lenovorecommendsthatyouuseablanket,towel,orothersoftclothtoprotectthec

Seite 43 - Replacingthepowerswitchboard

Step12.Reattachthebasecoverandsecureitwiththescrews.A540FRUlistsThischapterliststheinformationonthefieldreplaceableunits(FRUs)forA540All-In-Onecomputer

Seite 44 - ReplacingtheNFCmodule

CA540W8PI3-4158UMAW/TV5B20F63000NCA540W8PI5-4258UMAW/TV5B20F62991NCA540W8PI7-4558UMAW/TV5B20F62980NCA540W8PI3-4158DISW/OTV5B20F62969NCA540W8PI5-4258DI

Seite 45 - Replacingthecamera

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

Seite 46 - ReplacingtheLEDpanel

802.11AC_BT4.0RTL8821AU-CG1x1ac+BT4.0ComboUSB11202701N802.11AC_BT4.0RTL8821AU-CG1x1ac+BT4.0ComboUSB11202701NRTL8723AS-VAU1x1bgnBT4.0ComboUSB20200052NR

Seite 47 - Chapter7.Replacinghardware41

良维黑色单头1.8mC13IRAM电源线®310369801豪利士1.8米C13拉美制电源线310495151立讯(博硕)1.8米C13拉美制电源线315028691良维黑色单头1.8mC13Brazil电源线®310387841豪利士1.8米C13巴西制电源线310495131立讯(博硕)1.8米

Seite 48

LiteonSK-8861(BE-EN)2.4GKB-Metal8252160392LiteonSK-8861(US-EU)2.4GKB-Metal8252160402LiteonSK-8861(CH)2.4GKB-Metal8SD50F658162LiteonZTM6002.4GMouse(WW)

Seite 49 - .Replacinghardware43

Attention:BesuretoreadandunderstandallthesafetyinformationbeforereplacinganyFRUs.Notes:FRUsthathavea1or2intheCRUcolumnareCustomerReplaceableUnits(CRUs

Seite 50

BDPLANARCA740W8PI7-4558DISQW/OTV5B20F65674NBDPLANARCA740W8PI3-4158DISQW/TV5B20F65667NBDPLANARCA740W8PI5-4258DISQW/TV5B20F65660NBDPLANARCA740W8PI7-4558

Seite 51 - .Replacinghardware45

PhilipsWin8IRWhiteController888900017NPhilipsIRreceiver888900019NRemoterRemoterPhilipsWin7IRreceiver(R)888010662NDVB-TAvermediaH334DVB-TMiniTVCard1120

Seite 52 - A740FRUlists

立讯(博硕)1.8米C13韩制电源线315028701Longwell1.8MItalyC13powercord®310397261豪利士1.8米C13意制电源线310495121立讯(博硕)1.8米C13意大利电源线315028641Longwell1.8MDenmarkC13powercord®

Seite 53 - .Replacinghardware47

COVERRearCA740W/LOGO5CB0F65661NSpeakerA540Speaker90205401NHINGECA7405H50F65671NCOVERUpper,C,A540,W/TV5CB0F63293NCOVERUpper,C,A540,W/OTV5CB0F63300NCOVE

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52LenovoA540/A740HardwareMaintenanceManual

Seite 55 - .Replacinghardware49

Chapter8.GeneralinformationThischapterprovidesgeneralinformationthatappliestoallcomputermodelscoveredbythismanual.AdditionalServiceInformationThischap

Seite 56

ivLenovoA540/A740HardwareMaintenanceManual

Seite 57 - .Replacinghardware51

Chapter1.AboutthismanualThismanualcontainsserviceandreferenceinformationforLenovoA540/A740computerslistedonthecover.Itisintendedonlyfortrainedservicer

Seite 58

2LenovoA540/A740HardwareMaintenanceManual

Seite 59 - Chapter8.Generalinformation

Chapter2.SafetyinformationThischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.GeneralsafetyFollowtheserulestoen

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