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ideacentreAll-In-One520(22&24inch)ComputerHardwareMaintenanceManualMachineTypes:F0D1[AIO520-24IKL/EnergyStar]F0D2[AIO520-24IKU/EnergyStar]/F0D3[AIO520-24AST/EnergyStar]F0D4[AIO520-22IKL/EnergyStar]/F0D5[AIO520-22IKU/EnergyStar]F0D6[AIO520-22AST/EnergyStar]ideacentreAll-In-One520(22&24inch)ComputerHardwareMaintenanceManualMachineTypes:F0D1[AIO520-24IKL/EnergyStar]F0D2[AIO520-24IKU/EnergyStar]/F0D3[AIO520-24AST/EnergyStar]F0D4[AIO520-22IKL/EnergyStar]/F0D5[AIO520-22IKU/EnergyStar]F0D6[AIO520-22AST/EnergyStar]FirstEdition(July2017)©CopyrightLenovo2017.LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwarearedeliveredpursuantaGeneralServicesAdministration“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforthinContractNo.GS-35F-05925ContentsChapter1.Aboutthismanual......1ImportantSafetyInformation..........1Chapter2.Safetyinformation......3Generalsafety................3Electricalsafety...............3Safetyinspectionguide............5Handlingelectrostaticdischarge-sensitivedevices..................5Groundingrequirements............6Safetynotices................6Chapter3.Generalinformation.....9Specifications................9Chapter4.GeneralCheckout.....11Chapter5.UsingtheSetupUtility...13StartingtheLenovoBIOSSetupUtilityprogram.13Viewingandchangingsettings........13Usingpasswords..............13Enablingordisablingadevice........15Selectingastartupdevice..........16ExitingtheLenovoBIOSSetupUtilityprogram..17Chapter6.Symptom-to-FRUIndex..19Harddiskdrivebooterror..........19PowerSupplyProblems...........19POSTerrorcodes.............20Undeterminedproblems...........20Chapter7.Locatingconnectors,controlsandcomponents......21Chapter8.Replacinghardware....31Generalinformation.............31Replacingthekeyboardandmouse......32Replacingtheadapter............32Removingthestandbase..........33Removingtherearcover...........33Replacingthecamera............37Replacingtheheat-sink...........38ReplacingtheCPU.............39Replacingtheharddiskdrive.........42Replacingthesystemfan..........43Replacingtheopticaldrive..........44Replacingthememorymodule........45Replacingthesolidstatedrive........47ReplacingtheWi-Ficard...........47ReplacingthesideUSBboard........48Replacingthemotherboard..........49Removingthestandholder..........51ReplacingtheMicrophonemodule.......51Replacingthespeakersystem........52ReplacingtheLCDpanelmodule.......53Chapter9.FRUlists..........57Chapter10.Generalinformation..101AdditionalServiceInformation........101©CopyrightLenovo2017iiiivideacentreAll-In-One520(22&24inch)ComputerHardwareMaintenanceManualChapter1.AboutthismanualThismanualcontainsserviceandreferenceinformationforLenovoAll-In-One520seriescomputerslistedonthecover.ItisintendedonlyfortrainedservicerswhoarefamiliarwithLenovocomputerproducts.BeforeservicingaLenovoproduct,besuretoreadtheSafetyInformation.ThedescriptionoftheTV-tunercardinthismanualappliesonlytocomputerswithaTV-tunercardinstalled.ItdoesnotapplytocomputerswithoutaTV-tunercard.ImportantSafetyInformationBesuretoreadallCAUTIONandDANGERsectionsinthismanualbeforefollowinganyoftheinstructions.VeuillezliretouteslesconsignesdetypeDANGERetATTENTIONduprésentdocumentavantd’exécuterlesinstructions.LesenSieunbedingtalleHinweisevomTyp“ACHTUNG”oder“VORSICHT”indieserDokumentation,bevorSieirgendwelcheVorgängedurchführenLeggereleistruzioniintrodottedaATTENZIONEePERICOLOpresentinelmanualeprimadieseguireunaqualsiasidelleistruzioniCertifique-sedelertodasasinstruçõesdecuidadoeperigonestemanualantesdeexecutarqualquerumadasinstruçõesEsimportantequeleatodaslasdeclaracionesdeprecauciónydepeligrodeestemanualantesdeseguirlasinstrucciones.©CopyrightLenovo201712ideacentreAll-In-One520(22&24inch)ComputerHardwareMaintenanceManualChapter2.SafetyinformationThischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.GeneralsafetyFollowtheserulestoensuregeneralsafety:•Keeptheareasaroundthecomputerclearandcleanduringandaftermaintenance.•Whenliftinganyheavyobject:1.Ensureyoucanstandsafelywithoutslipping.2.Distributetheweightoftheobjectequallyacrossbothfeet.3.Liftslowly.Nevermovesuddenlyortwistwhenyouattempttolift.4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthemusclesinyourback.Donotattempttoliftanyobjectsthatweighmorethan16kg(35lb)orobjectsthatyouthinkaretooheavyforyou.•Donotperformanyactionthatwouldcreateahazardforthecustomer,orwouldmakethecomputerunsafe.•Beforeyoustartthecomputer,ensurethatotherservicerepresentativesandcustomerpersonnelarenotinapositionthatwouldcreateahazardforthem.•Placeremovedcoversandotherpartsinasafeplace,awayfromallpersonnel,whileyouareservicingthecomputer.•Keepyourtoolcaseawayfromareasthatpeoplemaywalkthroughtoensureno-onetripsoverit.•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Ensurethatyoursleevesarefastenedorrolledupaboveyourelbows.Ifyourhairislong,tieorfastenitback.•Inserttheendsofyournecktieorscarfinsideclothingorfastenitwithanon-conductiveclip,approximately8centimeters(3inches)fromtheend.•Do