Lenovo H520g User Manual

LenovoH520g

ideaideaideaCentreidea

HardwareMaintenanceManual

MachineTypes:90A3

Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadandunderstandChapter2

“Safetyinformation”onpage3andAppendixA“Notices”onpage103.

FirstEdition(January2013)
©CopyrightLenovo2013.

LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwareisdeliveredpursuantaGeneralServicesAdministration
“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforthinContractNo.GS-35F-05925.

Contents

Chapter1.Aboutthismanual......1

Importantsafetyinformation..........1

Chapter2.Safetyinformation......3

Generalsafety................3

Electricalsafety...............3

Voltage-selectionswitch............5

Safetyinspectionguide............5

Handlingelectrostaticdischarge-sensitive

devices..................6

Groundingrequirements............6

Safetynotices(multi-lingualtranslations).....6

Chapter3.Generalinformation....29

Specications...............29

LenovoSupportWebsite..........30

Chapter4.Generalcheckout.....31

Problemdeterminationtips..........31

Chapter5.Troubleshootingand

diagnostics..............33

Basictroubleshooting............33

AccessingControlPanelontheWindows8

operatingsystem..............34

Troubleshootingprocedure..........34

Troubleshooting..............35

Audioproblems............35

CDproblems.............37

DVDproblems.............38

Intermittentproblems..........39

Harddiskdriveproblems.........39

Keyboard,mouse,orpointingdevice

problems...............40

Monitorproblems............42

Networkingproblems..........43

Optionproblems............46

Performanceandlockupproblems.....47

Printerproblems............49

Serialportproblems...........49

Softwareproblems...........50

USBproblems.............51

Diagnostics................51

LenovoSolutionCenter.........51

Chapter6.UsingtheSetupUtility

program................53

StartingtheSetupUtilityprogram.......53

Viewingandchangingsettings........53

Usingpasswords..............53

Passwordconsiderations.........54

Power-OnPassword..........54

AdministratorPassword.........54

HardDiskPassword...........54

Setting,changing,anddeletingapassword.54
Erasinglostorforgottenpasswords(clearing

CMOS)................55

Enablingordisablingadevice........55

Selectingastartupdevice..........55

Selectingatemporarystartupdevice....55

Selectingorchangingthestartupdevice

sequence...............56

EnablingErPcompliancemode........56

ChangingtheBIOSsettingsbeforeinstallinganew

operatingsystem..............57

ExitingtheSetupUtilityprogram.......57

Chapter7.Symptom-to-FRUindex..59

Harddiskdrivebooterror..........59

Powersupplyproblems...........59

Beepsymptoms..............59

POSTerrorcodes.............60

Miscellaneouserrormessages........62

Undeterminedproblems...........63

Chapter8.Locations.........65

Locations.................65

Locatingconnectors,controls,andindicators

onthefrontofyourcomputer.......65

Locatingconnectorsontherearofyour

computer...............66

LocatingmajorFRUsandCRUs......66

Locatingpartsonthesystemboard....68

Locatinginternaldrives.........69

Chapter9.ReplacingFRUs......71

Handlingstatic-sensitivedevices.......71

Installingorreplacinghardware........71

Removingthecomputercover.......72

Removingandreinstallingthefrontbezel..73

InstallingorreplacingaPCIcard......74

Replacingthebattery..........77

Installingorreplacingamemorymodule...78

Replacingtheopticaldrive........80

Replacingtheheatsinkandfanassembly..82

Replacingthepowersupplyassembly...84

©CopyrightLenovo2013

i

Replacingthemicroprocessor.......85

Replacingthesystemboard.......88

Replacingtheprimaryharddiskdrive....90

ReplacingthefrontaudioandUSB

assembly...............92

Completingthepartsreplacement.....93

Chapter10.FRUlists.........95

Chapter11.Additionalservice

information..............99

Securityfeatures..............99

Hardware-controlledpasswords......99

Operatingsystempassword.......99

VitalProductData...........99

BIOSlevels................99

Flashupdateprocedures..........99

Updating(ashing)theBIOSfromadisc...100
Updating(ashing)theBIOSfromyour

operatingsystem............101

RecoveringfromaPOSTandBIOSupdate

failure................101

Powermanagement............102

AdvancedCongurationandPowerInterface

(ACPI)BIOS..............102

AutomaticPower-onfeatures.......102

AppendixA.Notices.........103

Televisionoutputnotice...........104

EuropeanconformanceCEmark.......104

Trademarks................104

Index.................105

iiLenovoH520gHardwareMaintenanceManual

Chapter1.Aboutthismanual

ThismanualprovidesserviceandreferenceinformationforLenovo
ThismanualisintendedonlyfortrainedservicepersonnelwhoarefamiliarwithLenovocomputerproducts.

BeforeservicingaLenovocomputerproduct,besuretoreadChapter2“Safetyinformation”onpage3.

Chapter7“Symptom-to-FRUindex”onpage59andChapter11“Additionalserviceinformation”onpage99
arenotspecictoanymachinetype.ThesechaptersareapplicabletoallLenovoH520gcomputers.

FormajorFRUlocationsandCustomerReplaceableUnit(CRU)identication,seeChapter8“Locations”
onpage65.

ForFRUreplacementinstructions,seeChapter9“ReplacingFRUs”onpage71.

®

computerslistedonthefrontcover.

Importantsafetyinformation

Besuretoreadallcautionanddangerstatementsinthismanualbeforeperforminganyoftheinstructions.

VeuillezliretouteslesconsignesdetypeDANGERetATTENTIONduprésentdocumentavantd'exécuter
lesinstructions.

LesenSieunbedingtalleHinweisevomTyp"ACHTUNG"oder"VORSICHT"indieserDokumentation,bevor
SieirgendwelcheVorgängedurchführen

LeggereleistruzioniintrodottedaATTENZIONEePERICOLOpresentinelmanualeprimadieseguireuna
qualsiasidelleistruzioni

Certique-sedelertodasasinstruçõesdecuidadoeperigonestemanualantesdeexecutarqualquer
umadasinstruções

Esimportantequeleatodaslasdeclaracionesdeprecauciónydepeligrodeestemanualantesdeseguir
lasinstrucciones.

©CopyrightLenovo2013

1

2LenovoH520gHardwareMaintenanceManual

Chapter2.Safetyinformation

Thischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.

Generalsafety

Followtheserulestoensuregeneralsafety:

•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.

•Whenliftinganyheavyobject:

1.Ensureyoucanstandsafelywithoutslipping.

2.Distributetheweightoftheobjectequallybetweenyourfeet.

3.Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempttolift.

4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe
musclesinyourback.Donotattempttoliftanyobjectsthatweighmorethan16kg(35lb)orobjects

thatyouthinkaretooheavyforyou.

•Donotperformanyactionthatcauseshazardstothecustomer,orthatmakestheequipmentunsafe.

•Beforeyoustartthemachine,ensurethatotherservicerepresentativesandthecustomer'spersonnelare
notinahazardousposition.

•Placeremovedcoversandotherpartsinasafeplace,awayfromallpersonnel,whileyouareservicing
themachine.

•Keepyourtoolcaseawayfromwalkareassothatotherpeoplewillnottripoverit.

•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Ensurethatyoursleeves
arefastenedorrolledupaboveyourelbows.Ifyourhairislong,fastenit.

•Inserttheendsofyournecktieorscarfinsideclothingorfastenitwithanonconductiveclip,approximately
8centimeters(3inches)fromtheend.

•Donotwearjewelry,chains,metal-frameeyeglasses,ormetalfastenersforyourclothing.
Remember:Metalobjectsaregoodelectricalconductors.

•Wearsafetyglasseswhenyouare:hammering,drilling,soldering,cuttingwire,attachingsprings,using
solvents,orworkinginanyotherconditionsthatmightbehazardoustoyoureyes.

•Afterservice,reinstallallsafetyshields,guards,labels,andgroundwires.Replaceanysafetydevice
thatiswornordefective.

•Reinstallallcoverscorrectlybeforereturningthemachinetothecustomer.

Electricalsafety

CAUTION:
Electricalcurrentfrompower,telephone,andcommunicationcablescanbehazardous.Toavoid
personalinjuryorequipmentdamage,disconnecttheattachedpowercords,telecommunication
systems,networks,andmodemsbeforeyouopenthecentrecovers,unlessinstructedotherwisein
theinstallationandcongurationprocedures.

Observethefollowingruleswhenworkingonelectricalequipment.

©CopyrightLenovo2013

3

Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoft

materialthatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.Manycustomershave,near
theirequipment,rubberoormatsthatcontainsmallconductiveberstodecreaseelectrostaticdischarges.
Donotusethistypeofmattoprotectyourselffromanelectricshock.

•Findtheroomemergencypower-off(EPO)switch,disconnectingswitch,orelectricaloutlet.Ifanelectrical
accidentoccurs,youcanthenoperatetheswitchorunplugthepowercordquickly.

•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.

•Disconnectallpowerbefore:
–Performingamechanicalinspection

–Workingnearpowersupplies
–RemovingorinstallingFieldReplaceableUnits(FRU)

•Beforeyoustarttoworkonthemachine,unplugthepowercord.Ifyoucannotunplugit,askthecustomer
topower-offthewallboxthatsuppliespowertothemachineandtolockthewallboxintheoffposition.

•Ifyouneedtoworkonamachinethathasexposedelectricalcircuits,observethefollowingprecautions:
–Ensurethatanotherperson,familiarwiththepower-offcontrols,isnearyou.

Remember:Anotherpersonmustbetheretoswitchoffthepower,ifnecessary.

–Useonlyonehandwhenworkingwithpowered-onelectricalequipment;keeptheotherhandinyour

pocketorbehindyourback.
Remember:Theremustbeacompletecircuittocauseanelectricshock.Byobservingtheabove
rule,youmaypreventacurrentfrompassingthroughyourbody.

–Whenusingatester,setthecontrolscorrectlyandusetheapprovedprobeleadsandaccessoriesfor

thattester.

–Standonsuitablerubbermats(obtainedlocally,ifnecessary)toinsulateyoufromgroundssuchas

metaloorstripsandmachineframes.

Observethespecialsafetyprecautionswhenyouworkwithveryhighvoltages;theseinstructionsarein
thesafetysectionsofmaintenanceinformation.Useextremecarewhenmeasuringhighvoltages.

•Regularlyinspectandmaintainyourelectricalhandtoolsforsafeoperationalcondition.

•Donotusewornorbrokentoolsandtesters.

•Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkthatithasbeenpowered-off.

•Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesofthesehazardsaremoistoors,
nongroundedpowerextensioncables,powersurges,andmissingsafetygrounds.

•Donottouchliveelectricalcircuitswiththereectivesurfaceofaplasticdentalmirror.Thesurfaceis
conductive;suchtouchingcancausepersonalinjuryandmachinedamage.

•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating
placesinamachine:

–Powersupplyunits
–Pumps
–Blowersandfans
–Motorgenerators

andsimilarunits.(Thispracticeensurescorrectgroundingoftheunits.)

•Ifanelectricalaccidentoccurs:
–Usecaution;donotbecomeavictimyourself.

–Switchoffpower.
–Sendanotherpersontogetmedicalaid.

4LenovoH520gHardwareMaintenanceManual

Voltage-selectionswitch

Somecomputersareequippedwithavoltage-selectionswitchlocatednearthepower-cordconnection
pointonthecomputer.Ifyourcomputerhasavoltage-selectionswitch,ensurethatyousettheswitchto
matchthevoltageavailableatyourelectricaloutlet.Settingthevoltage-selectionswitchincorrectlycan
causepermanentdamagetothecomputer.

Ifyourcomputerdoesnothaveavoltage-selectionswitch,yourcomputerisdesignedtooperateonlyatthe
voltageprovidedinthecountryorregionwherethecomputerwasoriginallypurchased.

Ifyourelocateyourcomputertoanothercountry,beawareofthefollowing:

•Ifyourcomputerdoesnothaveavoltage-selectionswitch,donotconnectthecomputertoanelectrical
outletuntilyouhaveveriedthatthevoltageprovidedisthesameasitwasinthecountryorregion
wherethecomputerwasoriginallypurchased.

•Ifyourcomputerhasavoltage-selectionswitch,donotconnectthecomputertoanelectricaloutletuntil
youhaveveriedthatthevoltage-selectionswitchissettomatchthevoltageprovidedinthatcountry
orregion.

Ifyouarenotsureofthevoltageprovidedatyourelectricaloutlet,contactyourlocalelectriccompanyor
refertoofcialWebsitesorotherliteraturefortravelerstothecountryorregionwhereyouarelocated.

Safetyinspectionguide

Theintentofthisinspectionguideistoassistyouinidentifyingpotentiallyunsafeconditionsonthese
products.Eachmachine,asitwasdesignedandbuilt,hadrequiredsafetyitemsinstalledtoprotectusers
andservicepersonnelfrominjury.Thisguideaddressesonlythoseitems.However,goodjudgmentshould
beusedtoidentifypotentialsafetyhazardsduetoattachmentoffeaturesoroptionsnotcoveredbythis
inspectionguide.

Ifanyunsafeconditionsarepresent,youmustdeterminehowserioustheapparenthazardcouldbeand
whetheryoucancontinuewithoutrstcorrectingtheproblem.

Considertheseconditionsandthesafetyhazardstheypresent:

•Electricalhazards,especiallyprimarypower(primaryvoltageontheframecancauseseriousorfatal
electricalshock).

•Explosivehazards,suchasadamagedCRTfaceorbulgingcapacitor

•Mechanicalhazards,suchaslooseormissinghardware

Theguideconsistsofaseriesofstepspresentedinachecklist.Beginthecheckswiththepoweroff,and
thepowercorddisconnected.

Checklist:

1.Checkexteriorcoversfordamage(loose,broken,orsharpedges).

2.Power-offthecomputer.Disconnectthepowercord.

3.Checkthepowercordfor:
a.Athird-wiregroundconnectoringoodcondition.Useametertomeasurethird-wireground

continuityfor0.1ohmorlessbetweentheexternalgroundpinandframeground.
b.Thepowercordshouldbetheappropriatetypeasspeciedinthepartslistings.
c.Insulationmustnotbefrayedorworn.

4.Removethecover.

Chapter2.Safetyinformation5

5.Checkforanyobviousalterations.Usegoodjudgmentastothesafetyofanyalterations.

6.Checkinsidetheunitforanyobviousunsafeconditions,suchasmetallings,contamination,wateror
otherliquids,orsignsofreorsmokedamage.

7.Checkforworn,frayed,orpinchedcables.

8.Checkthatthepower-supplycoverfasteners(screwsorrivets)havenotbeenremovedortamperedwith.

Handlingelectrostaticdischarge-sensitivedevices

Anycomputerpartcontainingtransistorsorintegratedcircuits(ICs)shouldbeconsideredsensitiveto
electrostaticdischarge(ESD).ESDdamagecanoccurwhenthereisadifferenceinchargebetweenobjects.
ProtectagainstESDdamagebyequalizingthechargesothatthemachine,thepart,theworkmat,andthe
personhandlingthepartareallatthesamecharge.

Notes:

1.Useproduct-specicESDprocedureswhentheyexceedtherequirementsnotedhere.

2.MakesurethattheESDprotectivedevicesyouusehavebeencertied(ISO9000)asfullyeffective.

WhenhandlingESD-sensitiveparts:

•Keepthepartsinprotectivepackagesuntiltheyareinsertedintotheproduct.

•Avoidcontactwithotherpeoplewhilehandlingthepart.

•Wearagroundedwriststrapagainstyourskintoeliminatestaticonyourbody.

•Preventthepartfromtouchingyourclothing.Mostclothingisinsulativeandretainsachargeevenwhen
youarewearingawriststrap.

•Usetheblacksideofagroundedworkmattoprovideastatic-freeworksurface.Thematisespecially
usefulwhenhandlingESD-sensitivedevices.

•Selectagroundingsystem,suchasthoselistedbelow,toprovideprotectionthatmeetsthespecic
servicerequirement.

Note:TheuseofagroundingsystemisdesirablebutnotrequiredtoprotectagainstESDdamage.
–AttachtheESDgroundcliptoanyframeground,groundbraid,orgreen-wireground.

–UseanESDcommongroundorreferencepointwhenworkingonadouble-insulatedor

battery-operatedsystem.Youcanusecoaxorconnector-outsideshellsonthesesystems.

–Usetheroundground-prongoftheacplugonac-operatedcomputers.

Groundingrequirements

Electricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrectsystemfunction.Proper
groundingoftheelectricaloutletcanbeveriedbyacertiedelectrician.

Safetynotices(multi-lingualtranslations)

Thecautionanddangersafetynoticesinthissectionareprovidedinthefollowinglanguages:

•English

•Arabic

•Brazilian/Portuguese

•Chinese(simplied)

•Chinese(traditional)

6LenovoH520gHardwareMaintenanceManual

•French

•German

•Hebrew

•Italian

•Korean

•Spanish

DANGER

Electricalcurrentfrompower,telephoneandcommunicationcablesishazardous.

Toavoidashockhazard:

•Donotconnectordisconnectanycablesorperforminstallation,maintenance,orreconguration

ofthisproductduringanelectricalstorm.

•Connectallpowercordstoaproperlywiredandgroundedelectricaloutlet.

•Connecttoproperlywiredoutletsanyequipmentthatwillbeattachedtothisproduct.

•Whenpossible,useonehandonlytoconnectordisconnectsignalcables.

•Neverturnonanyequipmentwhenthereisevidenceofre,water,orstructuraldamage.

•Disconnecttheattachedpowercords,telecommunicationssystems,networks,andmodems

beforeyouopenthedevicecovers,unlessinstructedotherwiseintheinstallationandconguration
procedures.

•Connectanddisconnectcablesasdescribedinthefollowingtableswheninstalling,moving,or

openingcoversonthisproductorattacheddevices.

ToConnectToDisconnect

1.TurneverythingOFF.

2.First,attachallcablestodevices.

3.Attachsignalcablestoconnectors.

4.Attachpowercordstooutlet.

5.TurndeviceON.

1.TurneverythingOFF.

2.First,removepowercordsfromoutlet.

3.Removesignalcablesfromconnectors.

4.Removeallcablesfromdevices.

CAUTION:
Whenreplacingthelithiumbattery,useonlyPartNumber45C1566oranequivalenttypebattery
recommendedbythemanufacturer.Ifyoursystemhasamodulecontainingalithiumbattery,replace
itonlywiththesamemoduletypemadebythesamemanufacturer.Thebatterycontainslithiumand
canexplodeifnotproperlyused,handled,ordisposedof.Donot:

•Throworimmerseintowater

•Heattomorethan100°C(212°F)

•Repairordisassemble

Chapter2.Safetyinformation7

Disposeofthebatteryasrequiredbylocalordinancesorregulations.

1

2

CAUTION:
Whenlaserproducts(suchasCD-ROMs,DVD-ROMdrives,beropticdevices,ortransmitters)are
installed,notethefollowing:

•Donotremovethecovers.Removingthecoversofthelaserproductcouldresultinexposureto
hazardouslaserradiation.Therearenoserviceablepartsinsidethedevice.

•Useofcontrolsoradjustmentsorperformanceofproceduresotherthanthosespeciedherein
mightresultinhazardousradiationexposure.

DANGER

SomelaserproductscontainanembeddedClass3AorClass3Blaserdiode.Notethefollowing:

Laserradiationwhenopen.Donotstareintothebeam,donotviewdirectlywithoptical
instruments,andavoiddirectexposuretothebeam.

≥18kg(37lbs)≥32kg(70.5lbs)≥55kg(121.2lbs)

CAUTION:
Usesafepracticeswhenlifting.

CAUTION:
Thepowercontrolbuttononthedeviceandthepowerswitchonthepowersupplydonotturnoff
theelectricalcurrentsuppliedtothedevice.Thedevicealsomighthavemorethanonepower
cord.Toremoveallelectricalcurrentfromthedevice,ensurethatallpowercordsaredisconnected
fromthepowersource.

8LenovoH520gHardwareMaintenanceManual

Chapter2.Safetyinformation9

≥18kg(37lbs)≥32kg(70.5lbs)≥55kg(121.2lbs)

1

2

PERIGO

Acorrenteelétricaprovenientedecabosdealimentação,detelefoneedecomunicaçõeséperigosa.

10LenovoH520gHardwareMaintenanceManual

Paraevitarriscodechoqueelétrico:

•Nãoconectenemdesconectenenhumcaboouexecuteinstalação,manutençãooureconguração
desteprodutoduranteumatempestadecomraios.

•Conectetodososcabosdealimentaçãoatomadaselétricascorretamenteinstaladaseaterradas.

•Todoequipamentoqueforconectadoaesteprodutodeveserconectadoatomadascorretamente
instaladas.

•Quandopossível,utilizeapenasumadasmãosparaconectaroudesconectarcabosdesinal.

•Nuncaliguenenhumequipamentoquandohouverevidênciadefogo,águaoudanosestruturais.

•Antesdeabrirtampasdedispositivos,desconectecabosdealimentação,sistemasdetelecomunicação,
redesemodemsconectados,amenosqueespecicadodemaneiradiferentenosprocedimentosde
instalaçãoeconguração.

•Conecteedesconecteoscabosconformedescritonatabelaapresentadaaseguiraoinstalar,moverou
abrirtampasdesteprodutooudedispositivosconectados.

ParaConectar:ParaDesconectar:

1.DESLIGUETudo.

2.Primeiramente,conectetodososcabosaos
dispositivos.

3.Conecteoscabosdesinalaosconectores.

4.Conecteoscabosdealimentaçãoàstomadas.

5.LIGUEosdispositivos.

1.DESLIGUETudo.

2.Primeiramente,removaoscabosdealimentaçãodas
tomadas.

3.Removaoscabosdesinaldosconectores.

4.Removatodososcabosdosdispositivos.

CUIDADO:

Aosubstituirabateriadelítio,utilizeapenasumabateriacomNúmerodePeça45C1566ouumtipo
debateriaequivalenterecomendadopeloSeoseusistemapossuiummódulocomumabateriade
lítio,substitua-oapenasporummódulodomesmotipoedomesmofabricante.Abateriacontémlítio
epodeexplodirsenãoforutilizada,manuseadaoudescartadademaneiracorreta.

Não:

•Jogueoucoloquenaágua

•Aqueçaamaisde100°C(212°F)

•Consertenemdesmonte

Descarteabateriaconformerequeridopelasleisouregulamentoslocais.

PRECAUCIÓN:

Quandoprodutosalaser(comounidadesdeCD-ROMs,unidadesdeDVD-ROM,dispositivosdebraótica
outransmissores)estivereminstalados,observeoseguinte:

•Nãoremovaastampas.Aremoçãodastampasdeumprodutoalaserpoderesultaremexposição
prejudicialàradiaçãodelaser.Nãoexistempeçasquepodemserconsertadasnointeriordodispositivo.

Chapter2.Safetyinformation11

•Autilizaçãodecontrolesouajustesouaexecuçãodeprocedimentosdiferentesdosespecicadosaqui

1

2

poderesultaremexposiçãoprejudicialàradiação.

PERIGO

AlgunsprodutosalasercontêmdiododelaserintegradodaClasse3AoudaClasse3B.Observeoseguinte:

Radiaçãoalaserquandoaberto.Nãoolhediretamenteparaofeixeaolhonuoucominstrumentosópticose
eviteexposiçãodiretaaofeixe.

≥18kg(37lbs)≥32kg(70.5lbs)≥55kg(121.2lbs)

CUIDADO:

Utilizeprocedimentosdesegurançaparalevantarequipamentos.

CUIDADO:

Obotãodecontroledealimentaçãododispositivoeobotãoparaligar/desligardafontedealimentação
nãodesligamacorrenteelétricafornecidaaodispositivo.Odispositivotambémpodetermaisdeumcabo
dealimentação.Pararemovertodaacorrenteelétricadodispositivo,assegurequetodososcabosde
alimentaçãoestejamdesconectadosdafontedealimentação.

12LenovoH520gHardwareMaintenanceManual

Chapter2.Safetyinformation13

1

2

14LenovoH520gHardwareMaintenanceManual

1

2

Chapter2.Safetyinformation15

DANGER

Lecourantélectriqueprovenantdel'alimentation,dutéléphoneetdescâblesdetransmissionpeutprésenter
undanger.

Pourévitertoutrisquedechocélectrique:

•Nemanipulezaucuncâbleetn'effectuezaucuneopérationd'installation,d'entretienoudereconguration
deceproduitaucoursd'unorage.

•Brancheztouslescordonsd'alimentationsurunsocledeprisedecourantcorrectementcâbléetmisàla
terre.

•Branchezsurdessoclesdeprisedecourantcorrectementcâbléstoutéquipementconnectéàceproduit.

•Lorsquecelaestpossible,n'utilisezqu'uneseulemainpourconnecteroudéconnecterlescâbles
d'interface.

•Nemettezjamaisunéquipementsoustensionencasd'incendieoud'inondation,ouenprésencede
dommagesmatériels.

•Avantderetirerlescartersdel'unité,mettezcelle-cihorstensionetdéconnectezsescordons
d'alimentation,ainsiquelescâblesquilarelientauxréseaux,auxsystèmesdetélécommunicationetaux
modems(saufinstructioncontrairementionnéedanslesprocéduresd'installationetdeconguration).

•Lorsquevousinstallez,quevousdéplacez,ouquevousmanipulezleprésentproduitoudespériphériques
quiluisontraccordés,reportez-vousauxinstructionsci-dessouspourconnecteretdéconnecterles
différentscordons.

ConnexionDéconnexion

1.MettezlesunitésHORSTENSION.

2.Commencezparbranchertouslescordonssurles
unités.

3.Branchezlescâblesd'interfacesurdesconnecteurs.

4.Branchezlescordonsd'alimentationsurdesprises.

5.MettezlesunitésSOUSTENSION.

1.MettezlesunitésHORSTENSION.

2.Débranchezlescordonsd'alimentationdesprises.

3.Débranchezlescâblesd'interfacedesconnecteurs.

4.Débrancheztouslescâblesdesunités.

ATTENTION:

Remplacerlapileaulithiumusagéeparunepilederéférenceidentiqueexclusivement,(référence
45C1566),ousuivrelesinstructionsdufabricantquiendénitleséquivalences.Sivotresystèmeest
dotéd'unmodulecontenantunepileaulithium,vousdevezleremplaceruniquementparunmodule
identique,produitparlemêmefabricant.Lapilecontientdulithiumetpeutexploserencasde
mauvaiseutilisation,demauvaisemanipulationoudemiseaurebutinappropriée.

Nepas:

•lajeteràl'eau,

•l'exposeràdestempératuressupérieuresà100°C,

•chercheràlaréparerouàladémonter.

Nepasmettrelapileàlapoubelle.Pourlamiseaurebut,sereporteràlaréglementationenvigueur.

16LenovoH520gHardwareMaintenanceManual

ATTENTION:

Sidesproduitsàlaser(telsquedesunitésdeCD-ROM,deDVD-ROM,desunitésàbresoptiques,ou
desémetteurs)sontinstallés,prenezconnaissancedesinformationssuivantes:

•Neretirezpaslecarter.Enouvrantl'unitédeCD-ROMoudeDVD-ROM,vousvousexposezau

rayonnementdangereuxdulaser.Aucunepiècedel'unitén'estréparable.

•Pourévitertoutrisqued'expositionaurayonlaser,respectezlesconsignesderéglageet

d'utilisationdescommandes,ainsiquelesprocéduresdécritesdansleprésentmanuel.

DANGER

Certainsproduitsàlasercontiennentunediodeàlaserintégréedeclasse3Aou3B.Prenez
connaissancedesinformationssuivantes:

Rayonnementlaserlorsquelecarterestouvert.Eviteztouteexpositiondirecteaurayonlaser.Evitez
deregarderxementlefaisceauoudel'observeràl'aided'instrumentsoptiques.

≥18kg(37lbs)≥32kg(70.5lbs)≥55kg(121.2lbs)

ATTENTION:

Soulevezlamachineavecprécaution.

ATTENTION:

L'interrupteurdecontrôled'alimentationdel'unitéetl'interrupteurdublocd'alimentationnecoupent
paslecourantélectriquealimentantl'unité.Enoutre,lesystèmepeutêtreéquipédeplusieurs
cordonsd'alimentation.Pourmettrel'unitéhorstension,vousdevezdéconnectertouslescordons
delasourced'alimentation.

Chapter2.Safetyinformation17

1

2

VORSICHT

AnNetz-,T elefon-undDatenleitungenkönnengefährlicheSpannungenanliegen.

AusSicherheitsgründen:

•BeiGewitterandiesemGerätkeineKabelanschließenoderlösen.FernerkeineInstallations-,

Wartungs-oderRekongurationsarbeitendurchführen.

•GerätnuraneineSchutzkontaktsteckdosemitordnungsgemäßgeerdetemSchutzkontakt

anschließen.

•AlleangeschlossenenGeräteebenfallsanSchutzkontaktsteckdosenmitordnungsgemäß

geerdetemSchutzkontaktanschließen.

•DieSignalkabelnachMöglichkeiteinhändiganschließenoderlösen,umeinenStromschlagdurch

BerührenvonOberächenmitunterschiedlichemelektrischemPotenzialzuvermeiden.

•Geräteniemalseinschalten,wennHinweiseaufFeuer,WasseroderGebäudeschädenvorliegen.

•DieVerbindungzudenangeschlossenenNetzkabeln,Telekommunikationssystemen,Netzwerken

undModemsistvordemÖffnendesGehäuseszuunterbrechen,sofernindenInstallations-und
KongurationsprozedurenkeineanderslautendenAnweisungenenthaltensind.

•ZumInstallieren,TransportierenundÖffnenderAbdeckungendesComputersoderder

angeschlossenenEinheitendieKabelgemäßderfolgendenTabelleanschließenundabziehen.

ZumAnschließenderKabelgehenSiewiefolgtvorZumAbziehenderKabelgehenSiewiefolgtvor

1.SchaltenSiealleEinheitenAUS.

2.SchließenSieerstalleKabelandieEinheitenan.

3.SchließenSiedieSignalkabelandieBuchsenan.

4.SchließenSiedieNetzkabelandieSteckdosean.

5.SchaltenSiedieEinheitEIN.

1.SchaltenSiealleEinheitenAUS.

2.ZiehenSiezuerstalleNetzkabelausden
Netzsteckdosen.

3.ZiehenSiedieSignalkabelausdenBuchsen.

4.ZiehenSiealleKabelvondenEinheitenab.

CAUTION:

EineverbrauchteLithiumbatterienurdurcheineBatteriemitderTeilenummer45C1566odereine
gleichwertige,vomHerstellerempfohleneBatterieersetzen.EnthältdasSystemeinModulmiteiner
Lithiumbatterie,diesesnurdurcheinModuldesselbenTypsundvondemselbenHerstellerersetzen.
DieBatterieenthältLithiumundkannbeiunsachgemäßerVerwendung,HandhabungoderEntsorgung
explodieren.

DieBatterienicht:

•mitWasserinBerührungbringen.

18LenovoH520gHardwareMaintenanceManual

•über100Cerhitzen.

•reparierenoderzerlegen.

DieörtlichenBestimmungenfürdieEntsorgungvonSondermüllbeachten.

ACHTUNG:

BeiderInstallationvonLasergeräten(wieCD-ROM-Laufwerken,DVD-aufwerken,Einheitenmit
LichtwellenleitertechnikoderSendern)Folgendesbeachten:

•DieAbdeckungennichtentfernen.DurchEntfernenderAbdeckungendesLasergerätskönnen

gefährlicheLaserstrahlungenfreigesetztwerden.DasGerätenthältkeinezuwartendenTeile.

•WerdenSteuerelemente,EinstellungenoderDurchführungenvonProzedurenandersalshier

angegebenverwendet,kanngefährlicheLaserstrahlungauftreten.

VORSICHT

EinigeLasergeräteenthalteneineLaserdiodederKlasse3Aoder3B.BeachtenSieFolgendes:

LaserstrahlungbeigeöffneterVerkleidung.NichtindenStrahlblicken.KeineLupenoderSpiegel
verwenden.Strahlungsbereichmeiden.

≥18kg≥32kg≥55kg

ACHTUNG:

ArbeitsschutzrichtlinienbeimAnhebenderMaschinebeachten.

ACHTUNG:

MitdemNetzschalteranderEinheitundamNetzteilwirddieStromversorgungfürdieEinheit
nichtunterbrochen.DieEinheitkannauchmitmehrerenNetzkabelnausgestattetsein.Umdie
StromversorgungfürdieEinheitvollständigzuunterbrechen,müssenallezumGerätführenden
NetzkabelvomNetzgetrenntwerden.

Chapter2.Safetyinformation19

1

2

20LenovoH520gHardwareMaintenanceManual

1

2

Chapter2.Safetyinformation21

PERICOLO

Lacorrenteelettricaprovenientedaicavidialimentazione,deltelefonoedicomunicazionepuòessere
pericolosa.

Perevitareilrischiodiscosseelettriche:

•Noncollegareoscollegarequalsiasicavooppureeffettuarel'installazione,lamanutenzioneola

ricongurazionedelprodottoduranteuntemporale.

•Collegaretuttiilielettriciaunapresadialimentazionecorrettamentecablataedotatadimessaa

terra.

•Collegareallepreseelettricheappropriatetutteleapparecchiaturecheverrannoutilizzateper

questoprodotto.

•Sepossibile,utilizzaresolounamanopercollegareoscollegareicavidisegnale.

•Nonaccendereassolutamenteapparecchiatureinpresenzadiincendi,perdited'acquaodanno

strutturale.

•Scollegareicavidialimentazione,isistemiditelecomunicazione,leretieilmodemprimadi

aprireicoperchideldispositivo,salvoistruzionicontrarierelativealleprocedurediinstallazionee
congurazione.

•Collegareescollegareicavicomedescrittonellaseguentetabellaquandovengonoeffettuate

operazionidiinstallazione,spostamentooaperturadeicoperchidiquestoprodottoodelleunità
collegate.

PercollegarsiPerscollegarsi

1.SPEGNEREleapparecchiature.

2.Innanzitutto,collegaretuttiicavialleunità.

3.Collegareicavidisegnaleaiconnettori.

4.Collegareicavidialimentazioneallapresa.

5.Accenderel'unità.

1.SPEGNEREleapparecchiature.

2.Innanzitutto,rimuovereicavidialimentazionedalla
presa.

3.Rimuovereicavidisegnaledaiconnettori.

4.Rimuoveretuttiicavidalleunità.

ATTENZIONE:

Quandosisostituiscelabatteriaallitio,utilizzaresoloilNumeroparte45C1566ountipodibatteria
equivalenteconsigliatodalproduttore.Sesulsistemaèpresenteunmodulochecontieneunabatteria
allitio,sostituirlosoloconuntipodimodulodellostessotipodellastessacasadiproduzione.La
batteriacontienelitioepuòesplodereseusata,maneggiataosmaltitainmodononcorretto.

Non:

•Gettareoimmergerelabatterianell'acqua

•Riscaldarlaadunatemperaturasuperioreai100gradiC(212gradiF)

•Smontarla,ricaricarlaotentarediripararla

Lebatterieusatevannosmaltiteinaccordoallanormativainvigore(DPR915/82esuccessive
disposizioniedisposizionilocali).

22LenovoH520gHardwareMaintenanceManual

ATTENZIONE:

1

2

Quandovengonoinstallatiprodottilaser(qualiCD-ROM,unitàDVD-ROM,unitàabreotticheo
trasmittenti),tenerpresentequantosegue:

•Nonrimuovereglisportelli.L'aperturadiun'unitàlaserpuòdeterminarel'esposizionearadiazioni

laserpericolose.All'internodell'unitànonvisonopartisucuieffettuarel'assistenzatecnica.

•L'utilizzodicontrolli,regolazioniol'esecuzionediprocedurenondescrittinelpresentemanuale

possonoprovocarel'esposizionearadiazionipericolose.

PERICOLO

AlcuneunitàlasercontengonoundiodolaserdiClasse3AoClasse3B.Tenerpresentequantosegue:

Aprendol'unitàvengonoemesseradiazionilaser.Nonssareilfascio,nonguardarlodirettamente
construmentiotticiedevitarel'esposizionealfascio.

≥18kg≥32kg≥55kg

ATTENZIONE:

Prestareattenzionenelsollevarel'apparecchiatura.

ATTENZIONE:

Ilpulsantedicontrollodell'alimentazionepresentesull'unitàel'interruttoredell'alimentatorenon
disattivanol'alimentazionecorrentefornitaall'unità.E'possibilechel'unitàdispongadipiùcavidi
alimentazione.Perdisattivarel'alimentazionedall'unità,accertarsichetuttiicavidialimentazione
sianoscollegatidallafontedialimentazione.

Chapter2.Safetyinformation23

24LenovoH520gHardwareMaintenanceManual

1

2

PELIGRO

Lacorrienteeléctricaprocedentedecablesdealimentación,teléfonosycablesdecomunicaciónpuede
serpeligrosa.

Paraevitarelriesgodedescargaeléctrica:

•Noconectenidesconecteloscablesnirealiceningunatareadeinstalación,mantenimientoo

reconguracióndeesteproductoduranteunatormentaeléctrica.

•Conectetodosloscablesdealimentaciónatomasdecorrientedebidamentecableadasy

conectadasatierra.

•Cualquierequipoqueseconecteaesteproductotambiéndebeconectarseatomasdecorriente

debidamentecableadas.

•Siemprequeseaposible,utiliceunasolamanoparaconectarodesconectarloscablesdeseñal.

Chapter2.Safetyinformation25

•Noenciendanuncaunequipocuandohayseñalesdefuego,aguaodañosestructurales.

•Desconecteloscablesdealimentación,lossistemasdetelecomunicaciones,lasredesylos

módemsconectadosantesdeabrirlascubiertasdelosdispositivos,amenosqueseindiquelo
contrarioenlosprocedimientosdeinstalaciónyconguración.

•Conecteydesconecteloscables,comosedescribeenlatablasiguiente,cuandoinstale,muevao

abralascubiertasdeesteproductoodelosdispositivosconectados.

ParaconectarParadesconectar

1.APÁGUELOtodo.

2.Enprimerlugar,conectetodosloscablesalos
dispositivos.

3.Conecteloscablesdeseñalalosconectores.

4.Enchufeloscablesdealimentaciónalastomasde
corriente.

5.Enciendaeldispositivo.

1.APÁGUELOtodo.

2.Enprimerlugar,desenchufeloscablesdealimentación
delastomasdecorriente.

3.Desconecteloscablesdeseñaldelosconectores.

4.Desconectetodosloscablesdelosdispositivos.

PRECAUCIÓN:

Cuandosustituyaunabateríadelitio,utilicesolamenteunabateríanúmerodepieza45C1566uotra
detipoequivalenterecomendadaporelfabricante.Sisusistemadisponedeunmóduloquecontiene
unabateríadelitio,reemplácelosóloconelmismotipodemódulo,delmismofabricante.Labatería
contienelitioypuedeexplotarsinoseutiliza,manipulaodesechacorrectamente.

Nodebe:

•Arrojarlaalaguaosumergirlaenella

•Exponerlaatemperaturassuperioresa100°C(212°F)

•Repararlaodesmontarla

Deshágasedelabateríasegúnespeciquenlasleyesonormaslocales.

PRECAUCIÓN:

Cuandohayaproductosláser(comounidadesdeCD-ROM,unidadesdeDVD,dispositivosdebra
ópticaotransmisores)instalados,tengaencuentalosiguiente:

•Noquitelascubiertas.Siquitalascubiertasdelproductoláser,podríaquedarexpuestoaradiación

láserpeligrosa.Dentrodeldispositivonoexisteningunapiezaquerequieraserviciotécnico.

•Siusacontrolesoajustesorealizaprocedimientosquenoseanlosespecicadosaquí,podría

exponersearadiacionespeligrosas.

PELIGRO

26LenovoH520gHardwareMaintenanceManual

Algunosproductoslásertienenincorporadoundiodoláserdeclase3Aoclase3B.Tengaencuentalo

1

2

siguiente:

Cuandoseabre,quedaexpuestoaradiaciónláser.Nomiredirectamentealrayoláser,nisiquieracon
instrumentosópticos,yeviteexponersedirectamentealrayoláser.

≥18kg≥32kg≥55kg

PRECAUCIÓN:

Adopteprocedimientossegurosallevantarelequipo.

PRECAUCIÓN:

Elbotóndecontroldealimentacióndeldispositivoyelinterruptordealimentacióndelafuentede
alimentaciónnodesconectanlacorrienteeléctricasuministradaaldispositivo.Además,eldispositivo
podríatenermásdeuncabledealimentación.Parasuprimirtodalacorrienteeléctricadeldispositivo,
asegúresedequetodosloscablesdealimentaciónesténdesconectadosdelatomadecorriente.

Chapter2.Safetyinformation27

28LenovoH520gHardwareMaintenanceManual

Chapter3.Generalinformation

Thischapterprovidesgeneralinformationthatappliestoallmachinetypessupportedbythismanual.

Specications

Thissectionliststhephysicalspecicationsforyourcomputer.

Dimensions

Width:160mm(6.3inches)
Height:375.3mm(14.78inches)
Depth:422.5mm(16.63inches)

Weight

Maximumcongurationasshipped:6.8kg(15.0lb)(withoutpackage)
Maximumcongurationasshipped:7.8kg(17.2lb)(withpackage)

Environment

•Airtemperature:

Operating:10°Cto35°C(50°Fto95°F)
Non-operating:-40°Cto60°C(-40°Fto140°F)
Non-operating:-10°Cto60°C(14°Fto140°F)(withoutpackage)

•Humidity:

Operating:20%to80%(non-condensing)
Non-operating:20%to90%(non-condensing)

•Altitude:

Operating:-15.2to3048m(-50to10000ft)
Non-operating:-15.2to10668m(-50to35000ft)

Electricalinput

•Inputvoltage:
–Lowrange:

Minimum:100Vac
Maximum:127Vac
Inputfrequencyrange:50/60Hz
Voltage-selectionswitchsetting:115Vac

–Highrange:

Minimum:200Vac
Maximum:240Vac
Inputfrequencyrange:50/60Hz
Voltage-selectionswitchsetting:230Vac

©CopyrightLenovo2013

29

LenovoSupportWebsite

TechnicalsupportinformationisavailableontheLenovoSupportWebsiteat:
http://www.lenovo.com/support

ThisWebsiteisupdatedwiththelatestsupportinformationsuchasthefollowing:

•Driversandsoftware

•Diagnosticsolutions

•Productandservicewarranty

•Productandpartsdetails

•Userguidesandmanuals

•Knowledgebaseandfrequentlyaskedquestions

30LenovoH520gHardwareMaintenanceManual

Chapter4.Generalcheckout

Attention

Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartupsequencemight
havebeenchanged.Beextremelycarefulduringwriteoperationssuchascopying,saving,orformatting.
Dataorprogramscanbeoverwrittenifyouselectanincorrectdrive.

Generalerrormessagesappearifaproblemorconictisfoundbyanapplicationprogram,theoperating
system,orboth.Fortheexplanationofthesemessages,refertotheinformationsuppliedwiththatsoftware
package.

BeforereplacingaFRU,ensurethatthelatestlevelofBIOSisinstalledonthesystem.Adown-levelBIOS
mightcausefalseerrorsandunnecessaryreplacementofthesystemboard.Formoreinformationonhowto
determineandobtainthelatestlevelBIOS,see“BIOSlevels”onpage99

Usethefollowingproceduretohelpdeterminethecauseofaproblem:

1.Power-offthecomputerandallexternaldevices.

2.Checkallcablesandpowercords.

3.Setalldisplaycontrolstothemiddleposition.

4.Power-onallexternaldevices.

5.Power-onthecomputer.

•Lookfordisplayederrorcodes

•Listenforbeepcodes

•Lookforreadableinstructionsoramainmenuonthedisplay.
Ifyoudidnotreceivethecorrectresponse,proceedtostep6.

Ifyoudoreceivethecorrectresponse,proceedtostep7.

6.Lookatthefollowingconditionsandfollowtheinstructions:

.

•IfyouhearbeepcodesduringPOST,goto“Beepsymptoms”onpage59

•IfthecomputerdisplaysaPOSTerror,goto“POSTerrorcodes”onpage60.

•Ifthecomputerhangsandnoerrorisdisplayed,turnoffthecomputerandthepower.Then,turnthe
powerandthecomputerbackon,continueatstep7.

7.RuntheDiagnosticprograms.See“Diagnostics”onpage51.

•Ifyoureceiveanerror,replacethepartthatthediagnosticprogramcallsout.

•Iftheteststopsandyoucannotcontinue,replacethelastdevicetested.

.

Problemdeterminationtips

Duetothevarietyofhardwareandsoftwarecombinationsthatcanbeencountered,usethefollowing
informationtoassistyouinproblemdetermination.Ifpossible,havethisinformationavailablewhen
requestingassistancefromServiceSupportandEngineeringfunctions.

•Machinetypeandmodel

•Processororharddiskdriveupgrades

•Failuresymptom
–Dodiagnosticsindicateafailure?

–What,when,where,single,ormultiplesystems?
–Isthefailurerepeatable?

©CopyrightLenovo2013

31

–Hasthiscongurationeverworked?
–Ifithasbeenworking,whatchangesweremadepriortoitfailing?
–Isthistheoriginalreportedfailure?

•Diagnosticsversion
–Typeandversionlevel

•Hardwareconguration
–Print(printscreen)congurationcurrentlyinuse

–BIOSlevel

•Operatingsystemsoftware
–Typeandversionlevel

Note:Toeliminateconfusion,identicalsystemsareconsideredidenticalonlyifthey:

1.Aretheexactmachinetypeandmodels

2.HavethesameBIOSlevel

3.Havethesameadapters/attachmentsinthesamelocations

4.Havethesameaddressjumpers/terminators/cabling

5.Havethesamesoftwareversionsandlevels

6.Havethesamediagnosticdiskettes(version)

7.Havethesamecongurationoptionssetinthesystem

8.Havethesamesetupforoperating-system-controlledles

Comparingthecongurationandsoftwareset-upbetween“workingandnon-working”systemswilloften
leadtoproblemresolution.

32LenovoH520gHardwareMaintenanceManual

Chapter5.Troubleshootinganddiagnostics

Thischapterdescribessomebasictroubleshootinganddiagnosticprograms.Ifyourcomputerproblemis
notdescribedhere,see“LenovoSupportWebsite”onpage30

Basictroubleshooting

Thefollowingtableprovidesinformationtohelpyoutroubleshootyourcomputerproblems.

Note:Ifyoucannotcorrecttheproblem,havethecomputerserviced.Foralistofserviceandsupport
telephonenumbers,refertotheSafety,Warranty,andSetupGuidethatcomeswithyourcomputerorgoto
theLenovoSupportWebsiteathttp://www.lenovo.com/support/phone.

SymptomAction

Thecomputerdoesnotstart
whenyoupressthepower
switch.

Themonitorscreenisblank.

Thekeyboarddoesnotwork.

Themousedoesnotwork.

Verifythat:

•Thepowercordiscorrectlyconnectedtotherearofthecomputerandtoa
workingelectricaloutlet.

•Ifyourcomputerhasasecondarypowerswitchontherearofthecomputer,
makesurethatitisswitchedon.

•Thepowerindicatoronthefrontofthecomputerison.

•Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.

Verifythat:

•Themonitorsignalcableiscorrectlyconnectedtothemonitorandtothe
appropriatemonitorconnectoronthecomputer.

•Themonitorpowercordiscorrectlyconnectedtothemonitorandtoaworking
electricaloutlet.

•Themonitoristurnedonandthebrightnessandcontrastcontrolsareset
correctly.

•Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.

•Ifyourcomputerhastwomonitorconnectors,besuretousetheconnector
onthegraphicscard.

Verifythat:

•Thecomputeristurnedon.

•ThekeyboardissecurelyconnectedtoaUSBconnectoronthecomputer.

•Nokeysarestuck.

Verifythat:

•Thecomputeristurnedon.

•ThemouseissecurelyconnectedtoaUSBconnectoronthecomputer.

•Themouseisclean.

foradditionaltroubleshootingresources.

©CopyrightLenovo2013

33

SymptomAction

Theoperatingsystemdoesnot
start.

Thecomputerbeepsmultiple
timesbeforetheoperating
systemstarts.

Verifythat:

•Thestartupsequenceincludesthedevicewheretheoperatingsystemresides.
Usually,theoperatingsystemisontheharddiskdrive.Formoreinformation,
see“Selectingastartupdevice”onpage55

Verifythatnokeysarestuck.

.

AccessingControlPanelontheWindows8operatingsystem

OntheWindowsoperatingsystem,youcanviewandchangecomputersettingsthroughControlPanel.To
accessControlPanelontheWindows8operatingsystem,dooneofthefollowing:

•Fromthedesktop

1.Movethecursortothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.

2.ClickSettings.

3.ClickControlPanel.

•FromtheStartscreen

1.Movethecursortothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.

2.ClickSearch.

3.OntheAppsscreen,scrolltotherightside,andclickControlPanelintheWindowsSystemsection.

Troubleshootingprocedure

Usethefollowingprocedureasastartingpointfordiagnosingproblemsyouareexperiencingwithyour
computer:

1.Verifythatthecablesforallattacheddevicesareconnectedcorrectlyandsecurely.

2.Verifythatallattacheddevicesthatrequireacpowerareconnectedtoproperlygrounded,functioning
electricaloutlets.

3.VerifythatallattacheddevicesareenabledintheBIOSsettingsofyourcomputer.Formoreinformation
aboutaccessingandchangingtheBIOSsettings,refertoyourChapter6“UsingtheSetupUtility
program”onpage53.

4.Gotothe“T roubleshooting”onpage35andfollowtheinstructionsforthetypeofproblemyouare
experiencing.IftheTroubleshootinginformationdoesnothelpyouresolveaproblem,continuewiththe
nextstep.

5.T ryusingapreviouslycapturedcongurationtoseeifarecentchangetohardwareorsoftwaresettings
hascausedaproblem.Beforerestoringapreviousconguration,captureyourcurrentcongurationin
casetheoldercongurationsettingsdonotsolvetheproblemorhaveadverseaffects.Torestorea
capturedconguration,dothefollowing:

•ForWindows7:ClickStart➙ControlPanel➙SystemandSecurity➙System➙System

Protection➙SystemRestore.

•ForWindows8:OpenControlPanel,andthenclickSystemandSecurity➙System➙System

Protection➙SystemRestore.

Ifthisdoesnotcorrecttheproblem,continuewiththenextstep.

6.Runthediagnosticprogram.See“LenovoSolutionCenter”onpage51formoreinformation.

•Ifthediagnosticprogramdetectsahardwarefailure,contacttheLenovoCustomerSupportCenter.

See“LenovoSupportWebsite”onpage30formoreinformation.

34LenovoH520gHardwareMaintenanceManual

•Ifyouareunabletorunthediagnosticprogram,contacttheLenovoCustomerSupportCenter.See
“LenovoSupportWebsite”onpage30formoreinformation.

•Ifthediagnosticprogramdoesnotdetectahardwarefailure,continuewiththenextstep.

7.Useanantivirusprogramtoseeifyourcomputerhasbeeninfectedbyavirus.Iftheprogramdetectsa
virus,removethevirus.

8.Ifnoneoftheseactionssolvetheproblem,seektechnicalassistance.See“LenovoSupportWeb
site”onpage30formoreinformation.

Troubleshooting

Usethetroubleshootinginformationtondsolutionstoproblemsthathavedenitesymptoms.

Ifthesymptomyourcomputerisexperiencingoccurredimmediatelyafteryouinstalledanewhardware
optionornewsoftware,dothefollowingbeforereferringtothetroubleshootinginformation:

1.Removethenewhardwareoptionorsoftware.Ifyoumustremovethecomputercovertoremovea
hardwareoption,makesureyoureviewandfollowtheelectricalsafetyinformationprovidedwithyour
computer.Foryoursafety,donotoperatethecomputerwiththecoverremoved.

2.Runthediagnosticprogramstoensureyourcomputerisoperatingcorrectly.

3.Reinstallthenewhardwareoptionorsoftwarefollowingthemanufacturer'sinstructions.

Selecttheproblemyourcomputerisexperiencingfromthefollowinglist:

•“Audioproblems”onpage35

•“CDproblems”onpage37

•“DVDproblems”onpage38

•“Intermittentproblems”onpage39

•“Harddiskdriveproblems”onpage39

•“Keyboard,mouse,orpointingdeviceproblems”onpage40

•“Monitorproblems”onpage42

•“Networkingproblems”onpage43

•“Optionproblems”onpage46

•“Performanceandlockupproblems”onpage47

•“Printerproblems”onpage49

•“Serialportproblems”onpage49

•“Softwareproblems”onpage50

•“USBproblems”onpage51

Audioproblems

Selectyoursymptomfromthefollowinglist:

•“NoaudioinWindows”onpage36

•“AnaudiodiscorAutoPlay-enableddiscdoesnotautomaticallyplaywhenitisinsertedintoadrive”
onpage36

•“Soundcomesfromoneexternalspeakeronly”onpage36

•“NoaudioinDOSapplicationsorgames”onpage36

Chapter5.Troubleshootinganddiagnostics35

NoaudioinWindows

Symptom:NoaudioinWindows

Actions:

•IfyouareusingpoweredexternalspeakersthathaveanOn/Offcontrol,verifythattheOn/Offcontrolis
settotheOnpositionandthespeakerpowercableisconnectedtoaproperlygrounded,functionalac
electricaloutlet.

•Ifyourexternalspeakershaveavolumecontrol,verifythatthevolumecontrolisnotsettoolow.

•Double-clickthespeakericonintheWindowsnoticationarea.Amastervolume-controlwindowopens.
VerifythattheMutesettingsarenotcheckedandnoneofthevolumesettingsissettoolow.

•Verifythatyourexternalspeakers(andheadphones,ifused)areconnectedtothecorrectaudioconnector
onthecomputer.Mostspeakercablesarecolor-codedtomatchtheconnector.

Note:Whenexternal-speakerorheadphonecablesareattachedtotheaudioconnector,theinternal
speaker,ifpresent,isdisabled.Inmostcases,ifanaudioadapterisinstalledinoneoftheexpansionslots,
theaudiofunctionbuiltintothesystemboardisdisabled;usetheaudiojacksontheadapter.

•MakesurethattheprogramyouarerunningisdesignedforuseintheMicrosoftWindowsoperating
system.IftheprogramisdesignedtoruninDOS,theprogramdoesnotusetheWindowssoundfeature
andmustbeconguredtouseSoundBlasterProorSoundBlasteremulation.

•Verifythattheaudiodevicedriversarecorrectlyinstalled.SeeMicrosoftWindowshelpsystemformore
information.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51

forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

AnaudiodiscorAutoPlay-enableddiscdoesnotautomaticallyplaywhenitis
insertedintoadrive

Symptom:AnaudiodiscorAutoPlay-enableddiscdoesnotautomaticallyplaywhenitisinsertedintoadrive

Action:See“CDproblems”onpage37

.

Soundcomesfromoneexternalspeakeronly

Symptom:Soundcomesfromoneexternalspeakeronly.

Actions:

•Ensurethatthespeakercableisinsertedcompletelyintotheconnectoronthecomputer.

•Makesurethecablethatattachestheleftspeakertotherightspeakerissecurelyconnected.

•Double-clickthespeakericonintheWindowsnoticationarea.Amastervolume-controlwindowopens.
VerifythattheBalancesettingsaresetcorrectly.

Iftheseactionsdonotcorrecttheproblem,youmighthaveafailingspeaker.Havethespeakerserviced.If
youneedtechnicalassistance,see“LenovoSupportWebsite”onpage30

.

NoaudioinDOSapplicationsorgames

Symptom:NoaudioinDOSapplicationsorgames

Actions:

•MakesuretheDOSapplicationorgameisconguredtouseSoundBlasterProorSoundBlaster
emulation.Refertothedocumentationthatcomeswiththeapplicationorgameforinstructionson
settingsound-cardsettings.

36LenovoH520gHardwareMaintenanceManual

•Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

CDproblems

Selectyoursymptomfromthefollowinglist:

•“AnaudiodiscorAutoPlay-enableddiscdoesnotautomaticallyplaywhenitisinsertedintoaCD
drive”onpage37

•“ACDorDVDdoesnotwork”onpage37

•“Unabletouseastartable(bootable)recoverymedium,suchastheProductRecoveryCD,tostart
yourcomputer”onpage37

AnaudiodiscorAutoPlay-enableddiscdoesnotautomaticallyplaywhenitis
insertedintoaCDdrive

Symptom:AnaudiodiscorAutoPlay-enableddiscdoesnotautomaticallyplaywhenitisinsertedinto
aCDdrive.

Actions:

•IfyouhavemultipleCDorDVDdrivesinstalled(oracombinationofCDandDVDdrives),tryinsertingthe
discintotheotherdrive.Insomecases,onlyoneofthedrivesisconnectedtotheaudiosubsystem.

•IfyouareusingtheWindows7operatingsystem,followtheactionfor“ACDorDVDdoesnotwork”
onpage37

.

Ifthisdoesnotcorrecttheproblem,followtheactionfor“ACDorDVDdoesnotwork”onpage37.

ACDorDVDdoesnotwork

Symptom:ACDorDVDdoesnotwork.

Actions:

•Verifythatthediscisinsertedcorrectly,withitslabelup.

•Makesurethatthediscyouareusingisclean.Toremovedustorngerprints,wipethedisccleanwitha
softclothfromthecentertotheoutside.Wipingadiscinacircularmotionmightcauselossofdata.

•Verifythatthediscyouareusingisnotscratchedordamaged.Tryinsertinganotherdiscthatyouknow
isgood.Ifyoucannotreadfromaknown-gooddisc,youmighthaveaproblemwithyourCDorDVD
driveorthecablingtoyourCDorDVDdrive.Makesurethatthepowercableandsignalcableare
securelyconnectedtothedrive.

Unabletouseastartable(bootable)recoverymedium,suchastheProductRecovery
CD,tostartyourcomputer

Symptom:Unabletouseastartable(bootable)recoverymedium,suchastheProductRecoveryCD,
tostartyourcomputer.

Action:MakesurethattheCDorDVDdriveisinthestartupsequencebeforetheharddiskdrive.Refer
toyour“Selectingorchangingthestartupdevicesequence”onpage56
changingthestartupsequence.Notethatonsomemodelsthestartupsequenceispermanentlysetand
cannotbechanged.

forinformationonviewingand

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51

forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Chapter5.Troubleshootinganddiagnostics37

DVDproblems

Selectyoursymptomfromthefollowinglist:

•“BlackscreeninsteadofDVDvideo”onpage38

•“DVDmoviewillnotplay”onpage38

•“NoaudioorintermittentaudiowhileplayingDVDmovie”onpage38

•“Playbackisverysloworchoppy”onpage38

•“Invaliddiscornodiscfoundmessage”onpage39

BlackscreeninsteadofDVDvideo

Symptom:BlackscreeninsteadofDVDvideo

Actions:

•RestarttheDVDplayerprogram.

•Closeanyopenles,turnoffthecomputer,andthenrestartthecomputer.

•Tryalowerscreenresolutionorcolordepth.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

DVDmoviewillnotplay

Symptom:DVDmoviewillnotplay.

Actions:

•Makesurethatthediscsurfaceiscleanandnotscratched.

•Checkthediscorpackageforregionalcoding.Y oumightneedtopurchaseadiscwithcodingfor
theregionwhereyouareusingyourcomputer.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

NoaudioorintermittentaudiowhileplayingDVDmovie

Symptom:NoaudioorintermittentaudiowhileplayingDVDmovie.

Actions:

•Checkthevolumecontrolsettingsonyourcomputerandonyourspeakers.

•Makesurethatthediscsurfaceiscleanandnotscratched.

•Checkallcableconnectionstoandfromthespeakers.

•UsetheDVDmenuforthevideotoselectadifferentaudiotrack.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Playbackisverysloworchoppy

Symptom:Playbackisverysloworchoppy.

Actions:

•Disableanybackgroundprograms,suchasAntiVirusorDesktopThemes.

38LenovoH520gHardwareMaintenanceManual

•Ensurethatvideoresolutionissettolessthan1152x864.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Invaliddiscornodiscfoundmessage

Symptom:Invaliddiscornodiscfoundmessage

Actions:

•EnsurethataDVDdiscisinthedrivewiththeshinysideofthediscfacingdown.

•Ensurethatvideoresolutionissettolessthan1152x864.

•OncomputersthathaveaCD-ROMorCD-RWdriveinadditiontoaDVD-ROMdrive,makesurethatthe
DVDdiscisinthedrivelabeled“DVD”.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Intermittentproblems

Symptom:Aproblemoccursonlyoccasionallyandisdifculttorepeat.

Actions:

•Verifythatallcablesandcordsaresecurelyconnectedtothecomputerandattacheddevices.

•Verifythatwhenthecomputerison,thefangrillisnotblocked(thereisairowaroundthegrill),andthe
fansareworking.Ifairowisblockedorthefansarenotworking,thecomputermightoverheat.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Harddiskdriveproblems

Selectyoursymptomfromthefollowinglist:

•“SomeorallharddiskdrivesmissingfromtheSetupUtilityprogram”onpage39

•“"NoOperatingSystemFound"messageorthesystemnotstartingfromthecorrectharddiskdrive”
onpage40

SomeorallharddiskdrivesmissingfromtheSetupUtilityprogram

Symptom:SomeorallharddiskdrivesmissingfromtheSetupUtilityprogram

Actions:

•Ensurethatallharddiskdrivesignalcablesandpowercablesareconnectedcorrectly.

•Ensurethatyourcomputerisconguredcorrectlytosupporttheharddiskdrives.
–IfyourcomputerisinstalledwithveSATAharddiskdrives,ensurethattheSATAharddiskdrive

enablementmodule(onetoveharddiskdrives)isinstalled.

–IfyourcomputerisinstalledwithSASharddiskdrives,ensurethattheSASharddiskdriveenablement

module(onetoveharddiskdrives)ortheLSIMegaRAIDSASadapterisinstalled.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprogramLenovoSolutionCenter.See“Lenovo
SolutionCenter”onpage51

.Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Chapter5.Troubleshootinganddiagnostics39

"NoOperatingSystemFound"messageorthesystemnotstartingfromthecorrect
harddiskdrive

Symptom:"NoOperatingSystemFound"messageorthesystemnotstartingfromthecorrectharddiskdrive

Actions:

•Ensurethatallharddiskdrivesignalcablesandpowercablesareconnectedcorrectly.

•EnsurethattheharddiskdriveyourcomputerstartsfromislistedastherststartupdeviceintheSetup
Utilityprogram.Referto“Selectingastartupdevice”onpage55

Note:Inrarecases,theharddiskdrivewiththeoperatingsystemmightgetcorruptedordamaged.Insuch
cases,youmightneedtoreplacetheharddiskdrive.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprogramLenovoSolutionCenter.See“Lenovo
SolutionCenter”onpage51

.Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

.

Keyboard,mouse,orpointingdeviceproblems

Selectyoursymptomfromthefollowinglist:

•“Allorsomekeysonthekeyboarddonotwork”onpage40

•“Themouseorpointingdevicedoesnotwork”onpage41

•“Thepointeronthescreendoesnotmovesmoothlywiththemouse”onpage41

•“Thewirelesskeyboarddoesnotwork”onpage41

Allorsomekeysonthekeyboarddonotwork

Symptom:Allorsomekeysonthekeyboarddonotwork.

Actions:

•Verifythatthekeyboardcableissecurelyconnectedtothecorrectconnectoronthecomputer.

•IfyouareusinganEnhancedPerformanceUSBkeyboardandoneormoreoftheRapidAccessbuttons
aretheonlykeysthatarenotworking,thesebuttonsmighthavebeendisabledorhavenotbeenassigned
toafunction.UsethehelpsystemintheEnhancedPerformanceCustomizationKeyboardprogramto
helpdiagnoseproblemswiththeRapidAccessbuttons.

ToopentheEnhancedPerformanceCustomizationKeyboardprogram,dooneofthefollowing:
–OntheWindows7operatingsystem,dothefollowing:

1.ClickStart➙ControlPanel.

2.ClickHardwareandSound.

3.ClickDevicesandPrinters.

4.Double-clickUSBEnhancedPerformanceKeyboard.TheUSBEnhancedPerformance
KeyboardCustomizationprogramstarts.

–OntheWindows8operatingsystem,dothefollowing:

1.OpenControlPanel.

2.ClickHardwareandSound.

3.ClickDevicesandPrinters.

4.Double-clickUSBEnhancedPerformanceKeyboard.TheUSBEnhancedPerformance
KeyboardCustomizationprogramstarts.

40LenovoH520gHardwareMaintenanceManual

Iftheseactionsdonotcorrecttheproblem,havethecomputerandkeyboardserviced.See“Lenovo
SupportWebsite”onpage30fordetails.

Themouseorpointingdevicedoesnotwork

Symptom:Themouseorpointingdevicedoesnotwork.

Actions:

•Verifythatthemouseorpointing-devicecableissecurelyattachedtothecorrectconnectoronthe
computer.Dependingonthetypeofmouseyouhave,themousecablewillconnecttoeitherthe
mouse,serial,orUSBconnector.SomekeyboardshaveintegratedUSBconnectorsthatcanbeused
foraUSBmouseorpointingdevice.

•Verifythatthedevicedriversforthemouseorpointingdeviceareinstalledcorrectly.

•IfyouareusingaUSBkeyboardormouse,verifythattheUSBconnectorsareenabledintheBIOS
settings.See“Enablingordisablingadevice”onpage55

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

.

Thepointeronthescreendoesnotmovesmoothlywiththemouse

Symptom:Thepointeronthescreendoesnotmovesmoothlywiththemouse.

Action:Erraticmovementofthemousepointerisgenerallycausedbyabuildupofdirt,oils,andother
contaminantsontheballinsidethemouse.Cleanthemouse.

Thengerprintreaderdoesnotwork

Symptom:Thengerprintreaderdoesnotwork.

Action:Thefollowingcouldcausethengerprintreadernottooperateproperly:

•Notenrollingyourngerprintcorrectly.

•Scratchingthesurfaceofthereaderwithahard,pointedobject.

•Scrapingthesurfaceofthereaderwithyournailoranythinghard.

•Usingortouchingthereaderwithadirtynger.

•Thesurfaceofyourngerisverydifferentfromwhenyouenrolledyourngerprint.

Thewirelesskeyboarddoesnotwork

Symptom:Thewirelesskeyboarddoesnotwork.

Action:IftheTransceiverCommunicationsLEDisonandthewirelessKeyboarddoesnotwork,restartyour
computer.Ifrestartingyourcomputerdoesnotsolvetheproblem,verifythatthefollowingconditionsaremet:

•Thebatteriesareproperlyinstalled.

•Thebatteriesstillretaintheircurrent.

•ThewirelessKeyboardislocatedlessthantenmetersawayfromthetransceiver.

•Thetransceiverisfullyinstalled.

Action:IftheTransceiverCommunicationsLEDisnoton,reconnectthetransceiverandthekeyboard.

Chapter5.Troubleshootinganddiagnostics41

Monitorproblems

Note:Manymonitorshavestatus-indicatorlightsandbuilt-incontrolsforadjustingbrightness,contrast,

width,height,andotherpictureadjustments.However,thecontrolsvaryfrommonitortypetomonitortype.
Forinformationaboutthestatuslightsandusingthecontrols,refertothedocumentationthatcomes
withyourmonitor.

Selectyoursymptomfromthefollowinglist:

•“Wrongcharactersappearonthescreen”onpage42

•“Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiodofcomputer
inactivity”onpage42

•“Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustartsomeapplication
programs”onpage42

•“Theimageappearstobeickering”onpage42

•“Theimageisdiscolored”onpage43

Wrongcharactersappearonthescreen

Symptom:Wrongcharactersappearonthescreen.

Action:Havethecomputerserviced.Fordetails,see“LenovoSupportWebsite”onpage30.

Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiod
ofcomputerinactivity

Symptom:Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiodofcomputer
inactivity.

Action:Thecomputerisprobablysetforenergysavingswiththepower-managementfeature.Ifthe
power-managementfeatureisenabled,disablingitorchangingthesettingsmightsolvetheproblem.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustart
someapplicationprograms

Symptom:Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustartsome
applicationprograms.

Actions:

•Makesurethemonitorsignalcableissecurelyconnectedtothemonitorandthemonitorconnectoron
thecomputer.Aloosecablecancauseintermittentproblems.

•Verifythatthenecessarydevicedriversfortheapplicationprogramsareinstalled.Refertothe
documentationfortheaffectedapplicationprogramtoseeifdevicedriversarerequired.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51

forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Theimageappearstobeickering

Symptom:Theimageappearstobeickering.

Actions:

42LenovoH520gHardwareMaintenanceManual

•Themonitormightbeoperatinginalow-refreshratedisplaymode.Setthemonitortothehighest,
noninterlacedrefreshratesupportedbyyourmonitorandthevideocontrollerinyourcomputer.

Attention:Usingaresolutionorrefreshratethatisnotsupportedbyyourmonitormightdamageit.Check
thedocumentationthatcomeswithyourmonitortoverifythesupportedrefreshrates.

•Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticeldsaroundother
devices,suchastransformers,appliances,uorescentlights,andothermonitorsmightbecausingthe
problem.Moveuorescentdesklightingoranyequipmentthatproducesmagneticeldsfartheraway
fromthemonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:

1.T urnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)

2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)
apart.

3.T urnonthemonitor.

•Y oucanresettherefreshratethroughyouroperatingsystemControlPanel:
OntheWindows7operatingsystem,clickStart➙ControlPanel➙HardwareandSound➙Adjust

screenresolution➙AdvancedSettings.ThenclicktheMonitortabandselectanewrefreshrate.
OntheWindows8operatingsystem,openControlPanelandclickHardwareandSound➙Adjust

screenresolution➙AdvancedSettings.ThenclicktheMonitortabandselectanewrefreshrate.

•Seeyouroperatingsystemdocumentationorhelpforfurtherinformationonmonitorsettings.

Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.See“LenovoSupportWeb
site”onpage30fordetails.

Theimageisdiscolored

Symptom:Theimageisdiscolored.

Action:Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticeldsaroundother
devices,suchastransformers,appliances,uorescentlights,andothermonitorsmightbecausingthe
problem.Moveuorescentdesklightingoranyequipmentthatproducesmagneticeldsfurtherawayfrom
themonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:

1.T urnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)

2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)apart.

3.T urnonthemonitor.

Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.See“LenovoSupportWeb
site”onpage30fordetails.

Networkingproblems

Thefollowingarethemostcommonnetworkingproblems.Selectyournetworkingproblemfromthe
followinglist:

•“Ethernetproblems”onpage43

Formoreinformation,see“LenovoSupportWebsite”onpage30.

Ethernetproblems

ForEthernetproblems,selectyoursymptomfromthefollowinglist:

•“Yourcomputercannotconnecttothenetwork”onpage44

•“Theadapterstopsworkingfornoapparentreason”onpage44

Chapter5.Troubleshootinganddiagnostics43

•“IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,theconnectionfails
orerrorsoccur”onpage45

•“IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.Instead,
itconnectsat100Mbps”onpage45

Yourcomputercannotconnecttothenetwork

Symptom:Y ourcomputercannotconnecttothenetwork.

Actions:Ensurethat:

•Thecableisinstalledproperly.
ThenetworkcablemustbesecurelyconnectedtoboththeEthernetconnectorofyourcomputerand

theRJ45connectorofthehub.Themaximumallowabledistancefromthecomputertohubis100
meters.Ifthecableisconnectedandthedistanceiswithinacceptablelimitsbuttheproblempersists,try
adifferentcable.

•Thecableisinstalledproperly.

•Y ouareusingthecorrectdevicedriver.
OntheWindows7operatingsystem,dothefollowing:

1.ClickStart➙ControlPanel.

2.ClickHardwareandSound.

3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,typethe
passwordorprovideconrmation.

4.IfanexclamationmarkisdisplayednexttoanadapternameunderNetworkadapters,youmight
notbeusingthecorrectdriverorthedriverisnotenabled.T oupdatethedriver,right-clickthe
highlightedadapter.

5.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.

OntheWindows8operatingsystem,dothefollowing:

1.OpenControlPanel.

2.ClickHardwareandSound.

3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,typethe
passwordorprovideconrmation.

4.IfanexclamationmarkisdisplayednexttoanadapternameunderNetworkadapters,youmight
notbeusingthecorrectdriverorthedriverisnotenabled.T oupdatethedriver,right-clickthe
highlightedadapter.

5.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.

•Theswitchportandtheadapterhavethesameduplexsetting.
Ifyouconguredtheadapterforfullduplex,ensurethattheswitchportisalsoconguredforfullduplex.

Settingthewrongduplexmodecandegradeperformance,causedataloss,orresultinlostconnections.

•Y ouhaveinstalledallnetworkingsoftwarethatisnecessaryforyournetworkenvironment.
CheckwithyourLANadministratorforthenecessarynetworkingsoftware.

Theadapterstopsworkingfornoapparentreason

Symptom:Theadapterstopsworkingfornoapparentreason.

Action:Thenetworkdriverlesmaybecorruptormissing.Updatethedriverbyreferringtothe“Solution”
descriptionfortheproceduretomakesurethatthecorrectdevicedriverisinstalled.

44LenovoH520gHardwareMaintenanceManual

TheWakeonLANfeatureisnotworking

Symptom:TheWakeonLAN(WOL)featureisnotworking.

Actions:

•MakesurethatWOLisenabledintheBIOSSetupUtilityprogram.

•Ifitis,checkwithyourLANadministratorforthenecessarysettings.

IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,theconnection
failsorerrorsoccur

Symptom:IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,theconnection
failsorerrorsoccur.

Actions:

•UseCategory5wiringandmakesurethatthenetworkcableissecurelyconnected.

•Connecttoa1000BASE-Thub/switch(not1000BASE-X).

IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.Instead,
itconnectsat100Mbps

Symptom:IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.
Instead,itconnectsat100Mbps.

Actions:

•Tryanothercable.

•Makesurethatthelinkpartnerissettoauto-negotiate.

•Makesurethattheswitchis802.3ab-compliant(gigabitovercopper).

AwirelessLANproblem

Symptom:Youcannotconnectusingthebuilt-inwirelessnetworkingcard.

Actions:

•MakesurethatyourwirelessLANdriveristhelatestversion.ChecktheWebsiteandverifythedriver
versionsupportedbyAccessConnectionsisthelatestdocumentedinthereadmele.

•Makesurethatyourcomputeriswithinrangeofawirelessaccesspoint.

•Makesurethatthewirelessradioisenabledbydouble-clickingtheAccessConnectionsiconinthe
Windowsnoticationarea.

Note:OntheWindows7operatingsystem,clickShowhiddeniconsintheWindowsnotication
area.TheAccessConnectionsiconisdisplayed.Formoreinformationabouttheicon,seetheHelpin
AccessConnections.

•CheckNetworkName(SSID),andyourencryptioninformation.UseAccessConnectionstoverifythis
case-sensitiveinformation.

AwirelessWANproblem

Message:UnauthorizedWANcardispluggedin-PoweroffandremovetheWANcard.

Action:TheWANcardisnotsupportedonthiscomputer.Removeit.

Note:SomecomputermodelsdonothaveawirelessWAN.

Chapter5.Troubleshootinganddiagnostics45

Bluetoothproblems

ForBluetoothproblems,selectyoursymptomfromthefollowinglist:

•“SounddoesnotcomefromtheBluetoothheadphone”onpage46

•“PIMitemssentfromtheWindows7operatingsystemcannotbereceivedcorrectly”onpage46

SounddoesnotcomefromtheBluetoothheadphone

Symptom:SounddoesnotcomefromtheBluetoothheadset/headphonebutcomesfromthelocalspeaker
eventhoughtheheadset/headphoneisconnectedusingHeadsetproleorAVprole.

Action:Dothefollowing:

1.Exittheapplicationthatusesthesounddevice(forexample,WindowsMediaPlayer).

2.OpentheControlPanelbyclickingStart➙ControlPanel.

3.ClickHardwareandSound➙Sound.

4.SelectthePlaybacktab.

5.IfyouareusingHeadsetprole,selectBluetoothHands-freeAudioandclicktheSetDefaultbutton.If
youareusingAVprole,selectStereoAudioandclicktheSetDefaultbutton.

6.ClickOKtoclosetheSoundwindow.

PIMitemssentfromtheWindows7operatingsystemcannotbereceivedcorrectly

Symptom:PersonalInformationManager(PIM)itemssentfromtheWindows7operatingsystemcannotbe
receivedcorrectlyintotheaddressbookofanyotherBluetooth-enableddevice.

Action:TheWindows7operatingsystemsendsPIMitemsinXMLformat,butmostBluetooth-enabled
deviceshandlePIMitemsinvCardformat.IfanotherBluetooth-enableddevicecanreceivealethrough
Bluetooth,aPIMitemsentfromtheWindows7operatingsystemmightbesavedasalewiththeextension
.contact.

Optionproblems

UsethisinformationtodiagnoseproblemswithLenovohardwareoptionsthatdonothavetheirown
troubleshootinginformation.

Selectyoursymptomfromthefollowinglist:

•“Anoptionthatwasjustinstalleddoesnotwork”onpage46

•“Anoptionthatpreviouslyworkeddoesnotworknow”onpage47

Anoptionthatwasjustinstalleddoesnotwork

Symptom:Anoptionthatwasjustinstalleddoesnotwork.

Action:Verifythat:

•Theoptionisdesignedforyourcomputer.

•Y oufollowedtheinstallationinstructionssuppliedwiththeoptionandtheinstallationinstructionsprovided
withyourcomputer,andalloptionles(suchasdevicedrivers,ifrequired)areinstalledcorrectly.

•Y ouhavenotloosenedotherinstalledoptionsorcables.

•Iftheoptionisanadapter,youhaveprovidedenoughhardwareresourcesfortheadaptertofunction
correctly.Seethedocumentationsuppliedwiththeadapter(aswellasthedocumentationforanyother
installedadapters)todeterminetheresourcesrequiredforeachadapter.

46LenovoH520gHardwareMaintenanceManual

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Anoptionthatpreviouslyworkeddoesnotworknow

Symptom:Anoptionthatpreviouslyworkeddoesnotworknow.

Actions:

•Verifythatalloptionhardwareandcableconnectionsaresecure.

•Iftheoptioncomeswithitsowntestinstructions,usethoseinstructionstotesttheoption.

•IfthefailingoptionisaSCSIoption,verifythat:
–ThecablesforallexternalSCSIoptionsareconnectedcorrectly.

–ThelastoptionineachSCSIchain,ortheendoftheSCSIcable,isterminatedcorrectly.
–AllexternalSCSIoptionsareturnedon.ExternalSCSIoptionsmustbeturnedonbeforethecomputer

isturnedon.Formoreinformation,seeyourSCSIdocumentation.

•Verifythattheoptionandanyrequireddevicedriversareinstalledcorrectly.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51

forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Performanceandlockupproblems

Poorperformanceandlockupproblemscanbearesultofanyofthefollowing:

•“Insufcientfreeharddiskdrivespace”onpage47

•“Excessivenumberoffragmentedles”onpage48

•“Insufcientmemory”onpage49

Makeaselectionfromtheabovelisttondoutmoreaboutthecorrectiveactionsyoucantake.

Insufcientfreeharddiskdrivespace

Symptom:Insufcientfreeharddiskdrivespace

TheWindowsoperatingsystemwillslowdownandmightproduceerrorsiftheharddiskdrivegetstoofull.

TochecktheamountoffreespaceontheWindows7operatingsystem,dothefollowing:

1.ClickStart➙Computer.

2.Right-clickyourCdriveentryandthenclickProperties.Theamountoffreediskspaceisdisplayed.

TochecktheamountoffreespaceontheWindows8operatingsystem,dothefollowing:

1.OpentheWindowsExplorerandclickComputer.

2.Right-clickyourCdriveentryandthenclickProperties.Theamountoffreediskspaceisdisplayed.

Tofreeupdiskspace,doanyofthefollowing:

•Procedure1

1.OntheWindows7operatingsystem,clickStart➙Computer.OntheWindows8operatingsystem,
opentheWindowsExplorerandclickComputer.

2.Right-clickyourCdriveentryandthenclickProperties.

3.ClickDiskCleanup.

Chapter5.Troubleshootinganddiagnostics47

4.Alistofunnecessarylecategoriesisdisplayed.Selecteachlecategoryyouwanttodelete,
andthenclickOK.

•Procedure2

1.OpenControlPanel.

2.ClickPrograms.

3.ClickTurnWindowsfeaturesonoroff.

4.AlistofoptionalWindowscomponentsisdisplayed.Followtheinstructionsonthescreen.

•Procedure3

1.OntheWindows7operatingsystem,clickStart➙Computer.OntheWindows8operatingsystem,
opentheWindowsExplorerandclickComputer.

2.Right-clickyourCdriveentryandthenclickProperties.

3.ClickDiskCleanup.

4.ClickCleanupsystemles.

5.ClicktheMoreOptionstab.

6.IntheProgramsandFeaturesarea,clicktheCleanupbutton.

7.Alistofinstalledprogramsisdisplayed.Selecttheprogramthatyouwanttoremove.Click
Uninstall/Change.

•CleanoutyourInbox,SentItems,andDeletedItemsfoldersfromyoure-mailapplication.Thefolder
namesandproceduresvarydependingonyoure-mailapplication.Ifyouneedassistance,seethe
helpsystemforyoure-mailapplication.

Excessivenumberoffragmentedles

Symptom:Excessivenumberoffragmentedles

Action:RuntheWindowsDiskDefragmenterprogram.

Note:Dependingonthesizeoftheharddiskdriveandamountofdatacurrentlystoredontheharddisk
drive,thedisk-defragmentationprocessmighttakeuptoseveralhourstocomplete.

OntheWindows7operatingsystem,dothefollowing:

1.Closeanyprogramsthatarecurrentlyrunningandcloseanyopenwindows.

2.ClickStart➙Computer.

3.Right-clickyourCdriveentryandthenclickProperties.

4.ClicktheToolstab.

5.ClickDefragmentNow,thenclickContinue.

6.ClickDefragmentNowagaintostartadisk-defragmentationprocess.

OntheWindows8operatingsystem,dothefollowing:

1.Closeanyprogramsthatarecurrentlyrunningandcloseanyopenwindows.

2.OpentheWindowsExplorerandclickComputer.

3.Right-clickyourCdriveentryandthenclickProperties.

4.ClicktheToolstab.

5.ClickOptimize.

6.ClickOptimizeagaintostartadisk-defragmentationprocess.

48LenovoH520gHardwareMaintenanceManual

Insufcientmemory

Symptom:Insufcientmemory

Ingeneral,themorememorythatisinstalled,thebettertheWindowsoperatingsystemruns.

Action:Installadditionalmemory.Forinformationaboutpurchasingmemory,see“LenovoSupportWeb
site”onpage30.Forstep-by-stepinstructionsoninstallingmemory,see“Installingorreplacingamemory
module”onpage78.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

Printerproblems

Symptom:Theprinterdoesnotwork.

Actions:Verifythat:

1.Theprinteristurnedonandisonline.

2.Paperisloadedcorrectly.

3.Theprintersignalcableissecurelyconnectedtothecorrectparallel,serial,orUSBconnectoronthe
computer.

Note:Non-IEEE-approvedprintersignalcablesmightcauseunpredictableproblems.

1.Anydevicedriversandothersoftwarethatcamewiththeprinterarecorrectlyinstalled.

2.Y ouhaveassignedtheprinterportcorrectlyinyouroperatingsystem,applicationprogram,orBIOS
settings.FormoreinformationaboutBIOSsettings,seeChapter6“UsingtheSetupUtilityprogram”
onpage53.

Iftheproblempersists,runthetestsdescribedinthedocumentationthatcomeswithyourprinter.Ifyou
cannotcorrecttheproblem,havethecomputerserviced.See“LenovoSupportWebsite”onpage30

Serialportproblems

Usethisinformationtotroubleshoottheserialportanddevicesattachedtotheserialport.

Symptom:Serialportcannotbeaccessed.

Actions:

•Makesuretheserialcableissecurelyconnectedtotheserialportonthecomputerandtotheserialdevice.
Iftheserialdevicehasitsownpowercord,makesureitisattachedtoaproperlygroundedelectricaloutlet.

•IftheserialdevicehasitsownOn/Offswitch,makesureitisintheOnposition.

•IftheserialdevicehasanOnlineswitch,makesureitisintheOnlineposition.

•Iftheserialdeviceisaprinter,makesurepaperisloadedcorrectly.

•Verifythatanysoftwaresuppliedwiththeserialdeviceiscorrectlyinstalled.Refertothedocumentation
fortheserial-deviceoption.

•Makesurethattheserial-portadapter,ifyouaddedone,isproperlyinstalledandrmlyseated.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page51

forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage30.

.

Chapter5.Troubleshootinganddiagnostics49

Softwareproblems

Selectyoursymptomfromthefollowinglist:

•“Whenusingasortfeature,datesdonotsortinthecorrectorder”onpage50

•“Softwaredoesnotworkasexpected”onpage50

Whenusingasortfeature,datesdonotsortinthecorrectorder

Symptom:Whenusingasortfeature,datesdonotsortinthecorrectorder.

Action:Somesoftwaredevelopedbeforetheyear2000usedonlythelasttwodigitsofayeartosort
dates,alwaysassumingthersttwodigitswere19.Consequently,theseprogramssortdatesoutoforder.
Checkwithyoursoftwaremanufacturertoseeifanyupdatesareavailable.Manysoftwaremanufacturers
makeupdatesavailablefromtheWorldWideWeb.

Softwaredoesnotworkasexpected

Symptom:Softwaredoesnotworkasexpected.

Actions:

•Mostsoftwareprogramshavebuilt-inhelpsystemsthatprovideinstructionsformosttasks.Ifyouare
havingdifcultyperformingaspecictaskwithinasoftwareprogram,refertothehelpsystemforthat
program.Helpsystemsaretypicallyaccessiblefromamenuorbuttonintheprogram,andfrequently
fromtheF1key.

•IfyouarehavingdifcultywiththeWindowsoperatingsystemoroneofitscomponents,refertothe
Windowshelpsystem.ItisaccessiblefromtheWindowsStartmenu.

•Todetermineifproblemsarecausedbynewlyinstalledsoftware,verifythat:
–Y ourcomputerhastheminimummemoryrequirementsneededtousethesoftware.Seethe

informationsuppliedwiththesoftwaretoverifymemoryrequirements.(Ifyoujustinstalledanadapter

ormemory,youmighthaveamemory-addressconict.)
–Thesoftwareisdesignedtooperateonyourcomputer.
–Othersoftwareworksonyourcomputer.
–Thesoftwareyouareusingworkscorrectlyonanothercomputer.

•Ifyoureceivedanyerrormessageswhileusingthesoftwareprogram,seetheprinteddocumentation
suppliedwiththesoftwareorthehelpsystemforthatsoftwareforadescriptionofthemessagesand
solutionstotheproblem.

•Checkwithyoursoftwaremanufacturertoseeifanyupdatesareavailable.Manysoftwaremanufacturers
makeupdatesavailablefromtheWorldWideWeb.

•Ifthesoftwareprogramusedtoworkcorrectly,butdoesnotworkcorrectlynow,dothefollowing:
–OntheWindows7operatingsystem,clickStart➙ControlPanel➙SystemandSecurity➙System

➙SystemProtection➙SystemRestore.Then,followtheinstructionsonthescreen.

–OntheWindows8operatingsystem,openControlPanelandclickSystemandSecurity➙System➙

SystemProtection➙SystemRestore.Then,followtheinstructionsonthescreen.

•Ifyouareunabletoresolvetheproblemthroughothermethods,uninstallthesoftwareprogramand
reinstallit.

Iftheseactionsdonotcorrecttheproblem,youmightneedtechnicalassistance.Contactyoursoftware
manufacturerorsee“LenovoSupportWebsite”onpage30fordetails.

50LenovoH520gHardwareMaintenanceManual

USBproblems

Symptom:TheUSBconnectorscannotbeaccessed.

Actions:

•MakesuretheUSBcableissecurelyconnectedtotheUSBconnectorandtotheUSBdevice.IftheUSB
devicehasitsownpowercord,makesureitisattachedtoaproperlygroundedelectricaloutlet.

•IftheUSBdevicehasitsownOn/Offswitch,makesureitisintheOnposition.

•IftheUSBdevicehasanOnlineswitch,makesureitisintheOnlineposition.

•IftheUSBdeviceisaprinter,makesurepaperisloadedcorrectly.

•MakesureanydevicedriversorothersoftwaresuppliedwiththeUSBdeviceiscorrectlyinstalled.
RefertothedocumentationfortheUSBdevice.

•ResetthedevicebydetachingandreattachingtheUSBconnector.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprogramstotesttheUSBconnector(see
“LenovoSolutionCenter”onpage51forinstructions).IftheUSBdevicecamewithitsowndiagnostics,
runthosediagnosticsagainsttheUSBdevice.Ifyouneedtechnicalassistance,see“LenovoSupport
Website”onpage30.

Diagnostics

Thediagnosticprogramisusedtotesthardwarecomponentsofyourcomputer.Thediagnosticprogramcan
alsoreportoperating-system-controlledsettingsthatinterferewiththecorrectoperationofyourcomputer.
Youcanusethepreinstalleddiagnosticprogramtodiagnosecomputerproblems,ifyourcomputeris
runningtheWindowsoperatingsystem.

Notes:

1.Y ourcomputerispreinstalledwiththeLenovoSolutionCenterprogramfordiagnosticpurposes.For
moreinformationabouttheLenovoSolutionCenterprogram,see“LenovoSolutionCenter”onpage51.

2.Ifyouareunabletoisolateandrepairtheproblemyourselfafterrunningthediagnosticprogram,save
andprinttheloglescreatedbythediagnosticprogram.Youwillneedthelogleswhenyouspeaktoa
Lenovotechnicalsupportrepresentative.

LenovoSolutionCenter

TheLenovoSolutionCenterprogramenablesyoutotroubleshootandresolvecomputerproblems.It
combinesdiagnostictests,systeminformationcollection,securitystatus,andsupportinformation,along
withhintsandtipsformaximumsystemperformance.

Notes:

•TheLenovoSolutionCenterprogramcanbedownloadedfromhttp://www.lenovo.com/diags.

•IfyouareusingotherWindowsoperatingsystemratherthanWindows7andWindows8,goto
http://www.lenovo.com/diagsforthelatestinformationondiagnosticsforyourcomputer.

ToruntheLenovoSolutionCenterprogram,see“Lenovoprograms”onpage.

Foradditionalinformation,refertotheLenovoSolutionCenterhelpsystem.

Note:Ifyouareunabletoisolateandrepairtheproblemyourselfafterrunningtheprogram,saveandprint
thelogles.YouwillneedthelogleswhenyouspeaktoaLenovotechnicalsupportrepresentative.

Chapter5.Troubleshootinganddiagnostics51

52LenovoH520gHardwareMaintenanceManual

Chapter6.UsingtheSetupUtilityprogram

TheSetupUtilityprogramisusedtoviewandchangethecongurationsettingsofyourcomputer,regardless
ofwhichoperatingsystemyouareusing.However,theoperatingsystemsettingsmightoverrideanysimilar
settingsintheSetupUtilityprogram.

StartingtheSetupUtilityprogram

TostarttheSetupUtilityprogram,dothefollowing:

1.Makesureyourcomputeristurnedoff.

2.RepeatedlypressandreleasetheF1keywhenturningonthecomputer.Whenyouhearmultiple
beepsorseealogoscreen,releasetheF1key.

Note:IfaPower-OnPasswordoranAdministratorPasswordhasbeenset,theSetupUtilityprogram
menuwillnotbedisplayeduntilyoutypethecorrectpassword.Formoreinformation,see“Using
passwords”onpage53

WhenthePOSTdetectsthattheharddiskdrivehasbeenremovedfromyourcomputerorthememory
modulesizehasdecreased,anerrormessagewillbedisplayedwhenyoustartthecomputerandyouwillbe
promptedtodooneofthefollowing:

•PressF1toentertheSetupUtilityprogram.

Note:AfteryouentertheSetupUtilityprogram,selectSaveChangesandExitatthebottomofthe
screen.Theerrormessagewillnotbedisplayedagain.

•PressF2tobypasstheerrormessageandlogintotheoperatingsystem.

.

Viewingandchangingsettings

TheSetupUtilityprogrammenulistsvariousitemsaboutthesystemconguration.Tovieworchange
settings,starttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage53.Then,follow
theinstructionsonthescreen.

YoucanuseeitherthekeyboardorthemousetonavigatethroughBIOSmenuchoices.Thekeysusedto
performvarioustasksaredisplayedatthebottomofeachscreen.

Usingpasswords

ByusingtheSetupUtilityprogram,youcansetpasswordstopreventunauthorizedaccesstoyourcomputer
anddata.Thefollowingtypesofpasswordsareavailable:

•Power-OnPassword

•AdministratorPassword

•HardDiskPassword

Youdonothavetosetanypasswordstouseyourcomputer.However,usingpasswordsimproves
computingsecurity.Ifyoudecidetosetanypasswords,readthefollowingsections.

©CopyrightLenovo2013

53

Passwordconsiderations

Apasswordcanbeanycombinationofupto64alphabeticandnumericcharacters.Forsecurityreasons,it
isrecommendedtouseastrongpasswordthatcannotbeeasilycompromised.Tosetastrongpassword,
usethefollowingguidelines:

•Haveatleasteightcharactersinlength

•Containatleastonealphabeticcharacterandonenumericcharacter

•SetupUtilityprogramandharddiskdrivepasswordsarenotcasesensitive

•Notbeyournameoryourusername

•Notbeacommonwordoracommonname

•Besignicantlydifferentfromyourpreviouspasswords

Power-OnPassword

WhenaPower-OnPasswordisset,youarepromptedtotypeavalidpasswordeachtimethecomputeris
turnedon.Thecomputercannotbeuseduntilthevalidpasswordistypedin.

AdministratorPassword

SettinganAdministratorPassworddetersunauthorizedusersfromchangingcongurationsettings.Ifyou
areresponsibleformaintainingthecongurationsettingsofseveralcomputers,youmightwanttosetan
AdministratorPassword.

WhenanAdministratorPasswordisset,youarepromptedtotypeavalidpasswordeachtimeyoutryto
accesstheSetupUtilityprogram.TheSetupUtilityprogramcannotbeaccesseduntilavalidpassword
istypedin.

IfboththePower-OnPasswordandAdministratorPasswordareset,youcantypeeitherpassword.However,
youmustuseyourAdministratorPasswordtochangeanycongurationsettings.

HardDiskPassword

SettingaHardDiskPasswordpreventsunauthorizedaccesstothedataontheharddiskdrive.Whena
HardDiskPasswordisset,youarepromptedtotypeavalidpasswordeachtimeyoutrytoaccessthe
harddiskdrive.

Notes:

•AfteryousetaHardDiskPassword,yourdataontheharddiskdriveisprotectedeveniftheharddisk
driveisremovedfromonecomputerandinstalledinanother.

•IftheHardDiskPasswordisforgotten,thereisnowaytoresetthepasswordorrecoverdatafromthe
harddiskdrive.

Setting,changing,anddeletingapassword

Toset,change,ordeleteapassword,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage53.

2.FromtheSetupUtilityprogrammainmenu,selectSecurity.

3.Dependingonthepasswordtype,selectSetPower-OnPassword,SetAdministratorPassword,or
HardDiskPassword.

4.Followtheinstructionsontherightsideofthescreentoset,change,ordeleteapassword.

54LenovoH520gHardwareMaintenanceManual

Note:Apasswordcanbeanycombinationofupto64alphabeticandnumericcharacters.Formore

information,see“Passwordconsiderations”onpage54.

Erasinglostorforgottenpasswords(clearingCMOS)

Thissectionprovidesinstructionsonhowtoeraselostorforgottenpasswords,suchasauserpassword.

Toerasealostorforgottenpassword,dothefollowing:

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.

2.Removethecomputercover.

3.LocatetheClearCMOS/Recoveryjumperonthesystemboard.

4.Movethejumperfromthestandardposition(pin1andpin2)tothemaintenanceposition(pin2and
pin3).

5.Reinstallthecomputercoverandconnectthepowercord.

6.T urnonthecomputerandleaveitonforapproximately10seconds.Then,turnoffthecomputerby
holdingthepowerswitchforapproximatelyveseconds.

7.Repeatstep1throughstep3.

8.MovetheClearCMOS/Recoveryjumperbacktothestandardposition(pin1andpin2).

9.Reinstallthecomputercoverandconnectthepowercord.

Enablingordisablingadevice

Thissectionprovidesinformationonhowtoenableordisableuseraccesstothefollowingdevices:

USBSetupUsethisoptiontoenableordisableaUSBconnector.WhenaUSBconnectoris

disabled,thedeviceconnectedtotheUSBconnectorcannotbeused.

SATAControllerWhenthisfeatureissettoDisable,alldevicesconnectedtotheSATAconnectors

(suchasharddiskdrivesortheopticaldrive)aredisabledandcannotbeaccessed.

Toenableordisableadevice,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage53.

2.FromtheSetupUtilityprogrammainmenu,selectDevices.

3.Dependingonthedeviceyouwanttoenableordisable,dooneofthefollowing:

•SelectUSBSetuptoenableordisableaUSBdevice.

•SelectATADrivesSetup➙SATAControllertoenableordisableaSATAdevice.

4.SelectthedesiredsettingsandpressEnter.

5.PressF10tosaveandexittheSetupUtilityprogram.See“ExitingtheSetupUtilityprogram”onpage57.

Selectingastartupdevice

Ifyourcomputerdoesnotstartupfromadevicesuchasthediscorharddiskdriveasexpected,dooneof
thefollowingtoselectthestartupdeviceyouwant.

Selectingatemporarystartupdevice

Usethisproceduretoselectatemporarystartupdevice.

Note:Notalldiscsandharddiskdrivesarebootable.

Chapter6.UsingtheSetupUtilityprogram55

1.T urnoffyourcomputer.

2.RepeatedlypressandreleasetheF12keywhenturningonthecomputer.WhentheStartupDevice
Menuwindowdisplays,releasetheF12key.

3.SelectthedesiredstartupdeviceandpressEnter.Thecomputerwillstartupfromthedeviceyou
selected.

Note:SelectingastartupdevicefromtheStartupDeviceMenuwindowdoesnotpermanentlychange
thestartupsequence.

Selectingorchangingthestartupdevicesequence

Tovieworpermanentlychangetheconguredstartupdevicesequence,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage53.

2.FromtheSetupUtilityprogrammainmenu,selectStartup.

3.SelectthedevicesforthePrimaryStartupSequence,theAutomaticStartupSequence,andtheError
StartupSequence.Readtheinformationdisplayedontherightsideofthescreen.

4.PressF10tosaveandexittheSetupUtilityprogram.See“ExitingtheSetupUtilityprogram”onpage57.

EnablingErPcompliancemode

Youcanenabletheenergy-relatedproductsdirective(ErP)compliancemodethroughthePowermenuinthe
SetupUtilityprogramtoreducetheconsumptionofelectricitywhenyourcomputerisinstandbyoroffmode.

ToenableErPcompliancemodeintheSetupUtilityprogram,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage53.

2.FromtheSetupUtilityprogrammainmenu,selectPower➙EnhancedPowerSavingMode,and
pressEnter.

3.SelectEnabledandpressEnter.

4.FromthePowermenu,selectAutomaticPowerOnandpressEnter.

5.SelectWakeonLanandpressEnter.

6.SelectDisabledandpressEnter.

7.PressF10tosavechangesandexittheSetupUtilityprogram.PressEnterwhenpromptedtoconrm
theexit.

Note:WhenErPcompliancemodeisenabled,youcanwakeupyourcomputerbydoingoneofthefollowing:

•Pressingthepowerswitch

•Enablingthewakeuponalarmfeature
Thewakeuponalarmfeatureenablesyourcomputertowakeupatasettime.T oenablethewake

uponalarmfeature,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage53.

2.FromtheSetupUtilityprogrammainmenu,selectPower➙AutomaticPowerOn,andpressEnter.

3.SelectWakeUponAlarmandpressEnter.Thenfollowtheinstructionsonthescreen.

4.PressF10tosavechangesandexittheSetupUtilityprogram.PressEnterwhenpromptedto
conrmtheexit.

•Enablingtheafterpowerlossfeature
Theafterpowerlossfeatureenablesyourcomputertowakeupwhenthepowersupplyresumesaftera

suddenlossofelectricity.Toenabletheafterpowerlossfeature,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage53.

56LenovoH520gHardwareMaintenanceManual

2.FromtheSetupUtilityprogrammainmenu,selectPower➙AfterPowerLoss,andpressEnter.

3.SelectPowerOnandpressEnter.

4.PressF10tosavechangesandexittheSetupUtilityprogram.PressEnterwhenpromptedto
conrmtheexit.

ChangingtheBIOSsettingsbeforeinstallinganewoperatingsystem

BIOSsettingsvarybyoperatingsystem.ChangetheBIOSsettingsbeforeinstallinganewoperatingsystem.

TochangetheBIOSsettings,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage53.

2.FromtheSetupUtilityprogrammainmenu,selectExit➙OSOptimizedDefault.

3.Dependingontheoperatingsystemtobeinstalled,dooneofthefollowing:

•ToinstalltheWindows8(64-bit)operatingsystem,selectEnabled.

•ToinstallanoperatingsystemotherthanWindows8(64-bit),selectDisabled.

4.SelectYesinthewindowdisplayedandpressEntertoconrmyourselection.

5.PressF10tosavechangesandexittheSetupUtilityprogram.See“ExitingtheSetupUtilityprogram”
onpage57.

ExitingtheSetupUtilityprogram

Afteryounishviewingorchangingsettings,pressEsctoreturntotheSetupUtilityprogrammainmenu.
YoumighthavetopressEscseveraltimes.Dooneofthefollowing:

•Ifyouwanttosavethenewsettings,pressF10tosaveandexittheSetupUtilityprogram.

•Ifyoudonotwanttosavethesettings,selectExit➙DiscardChangesandExit,andthenpress
Enter.WhentheResetWithoutSavingwindowopens,selectYes,andthenpressEntertoexitthe
SetupUtilityprogram.

•Ifyouwanttoreturntothedefaultsettings,pressF9toloadthedefaultsettings,andthenpressF10to
saveandexittheSetupUtilityprogram.

Chapter6.UsingtheSetupUtilityprogram57

58LenovoH520gHardwareMaintenanceManual

Chapter7.Symptom-to-FRUindex

TheSymptom-to-FRUindexlistserrorsymptomsandpossiblecauses.Themostlikelycauseislistedrst.
AlwaysbeginwiththeChapter4“Generalcheckout”onpage31
whichFRUsareneededwhenservicingacomputer.Ifyouareunabletocorrecttheproblemusingthis
index,goto“Undeterminedproblems”onpage63.

Notes:

1.Ifyouhavebothanerrormessageandanincorrectaudioresponse,diagnosetheerrormessagerst.

2.Ifyoucannotrunthediagnostictests,butdidreceiveaPOSTerrormessage,diagnosethePOSTerrormessage
rst.

3.Ifyoudidnotreceiveanyerrormessage,lookforadescriptionofyourerrorsymptomsintherstpartofthisindex.

Harddiskdrivebooterror

Aharddiskdrivebooterror(errorcodes1962andI999030X)canhavethefollowingcauses.

ErrorFRU/Action

Thestart-updriveisnotinthebootsequencein
conguration.

Nooperatingsysteminstalledonthebootdrive.Installanoperatingsystemonthebootdrive.
Thebootsectoronthestart-updriveiscorrupted.

Thedriveisdefective.

Checkthecongurationandensurethestart-updriveis
inthebootsequence.

Thedrivemustbeformatted.Dothefollowing:

1.Attempttobackupthedataonthefailingharddisk

2.Usingtheoperatingsystemsprogram,formatthe

Replacetheharddiskdrive.

.Youcanusethisindextohelpyoudecide

drive.

harddiskdrive.

Powersupplyproblems

Ifyoususpectapowerproblem,usethefollowingprocedures.

Check/VerifyFRU/Action

Checkthefollowingforproperinstallation:

•Powercord

•On/Offswitchconnector

•On/Offswitchpowersupplyconnector

•Systemboardpowersupplyconnectors

•Microprocessor(s)connection
Checkthepowercordforcontinuity.
Checkthepower-onswitchforcontinuity.

Reseatconnectors

Powercord
Power-onswitch

Beepsymptoms

Beepsymptomsaretonesoraseriesoftonesseparatedbypauses(intervalswithoutsound)duringPOST.

©CopyrightLenovo2013

59

Thefollowingtablesdescribesbeepsymptoms.

BeepSymptomFRU/Action
2shortbeepsCMOSsettingerror

3shortbeepsandthen1longbeepDRAMmemory

error

Performthefollowingactionsinorder.

1.StarttheSetupUtilityprogramandpressF10to
Saveandexit.SeeChapter6“UsingtheSetupUtility
program”onpage53

2.StarttheSetupUtilityprogramandpressF9toload
defaultsandthenpressF10toSaveandexit.

3.PerformaBoot-blockrecovery.See“Recovering
fromaPOSTandBIOSupdatefailure”onpage101

Performthefollowingactionsinorder.

1.Makesurethememorymodule(s)areproperlyseated
intheconnector(s).

2.Replacethememorymodule(s).

3.Replacethesystemboard.

.

POSTerrorcodes

Eachtimeyoupower-onthesystem,itperformsaseriesofteststhatchecktheoperationofthesystem
andsomeoptions.ThisseriesoftestsiscalledthePower-OnSelf-Test,orPOST.POSTdoesthefollowing
operations.

.

•Checkssomebasicsystem-boardoperations

•Checksthememoryoperation

•Startsthevideooperation

•Veriesthatthebootdriveisworking

IfthePOSTdetectsaproblem,anerrormessageappearsonthescreen.Asingleproblemcancauseseveral
errormessagestoappear.Whenyoucorrectthecauseofthersterrormessage,theothererrormessages
probablywillnotappearonthescreenthenexttimeyouturnonthesystem.

POSTErrorcodePOSTErrormessageDescription/Action

00CEMachineTypeorSerialNumberisINVALID

0211

0135

0164MemorysizedecreasedThiserrormessageisdisplayedwhenthememory

Keyboardnotfound

Fanfailure

Thiserrormessageisdisplayedwhenthemachine
typeortheserialnumberisinvalid.

Thiserrormessageisdisplayedwhenthereisno
keyboarddetected.

Thesystemmightbeoverheating.

PressF1toentertheSetupUtilityprogram.
ThenpressF10tosaveandexittheSetupUtility
program.

Note:Iftheproblemiscausedbythe
microprocessorfan,pressingF10willnotsolve
theproblem.

sizehasdecreased.

60LenovoH520gHardwareMaintenanceManual

PressF1toentertheSetupUtilityprogram.
ThenpressF10tosaveandexittheSetupUtility
program.

POSTErrorcodePOSTErrormessageDescription/Action

1762

1820

Congurationchangehasoccurred

Morethanoneexternalngerprintreader
isattached.Poweroffandremoveallbut
thereaderthatyousetupwithinyourmain
operatingsystem.

1962

Nooperatingsystemfound.Pressanykey
torepeatbootsequence.

0162

0167

0175

0176

SetupdataintegritycheckfailurePressF1toentertheSetupUtilityprogram.

Noprocessormicrocodeupdatefound

SystemSecurity-SecuritydatacorruptedPressF1toentertheSetupUtilityprogram.

SystemSecurity-Thesystemhasbeen
tamperedwith

Thiserrormessageisdisplayedwhenaharddisk
driveoropticaldrivechangehasbeenmade.

PressF1toentertheSetupUtilityprogram.
ThenpressF10tosaveandexittheSetupUtility
program.

Ifmorethanoneexternalngerprintreaderis
connectedtoacomputer,thiserrormessagewill
bedisplayedtoinformyoutoremoveallofthe
ngerprintkeyboardsexcepttheonecompatible
withthengerprintapplicationonyourcomputer.

ThiserroroccursonlyafterthePOSTiscompleted.
Pressanykeytorepeatbootsequence.

ThenpressF10tosaveandexittheSetupUtility
program.

Thiserrormessageindicatesthatthereis
nomicrocodeupdateimageforthecurrent
microprocessor.

ThenpressF10tosaveandexittheSetupUtility
program.

Thiserrormessageisdisplayedwhenthe
computeristurnedonwiththecoveropenor
removed.

PressF1toentertheSetupUtilityprogram.
ThenpressF10tosaveandexittheSetupUtility
program.

0189

SystemSecurity-Cannotreadthe
SecurityEEPROM

ThiserrormessageindicatesthattheSecurity
EEPROMmaybebrokenorremoved.

PressF1toentertheSetupUtilityprogram.
ThenpressF10tosaveandexittheSetupUtility
program.

0197

SystemSecurity-Unauthorizedsecurity
datachangedetected

PressF1toentertheSetupUtilityprogram.
ThenpressF10tosaveandexittheSetupUtility
program.

0190

SystemSecurity-Invalidsecuritychange
requested

PressF1toentertheSetupUtilityprogram.
ThenpressF10tosaveandexittheSetupUtility
program.

0199

SystemSecurity-Securitypasswordretry
countexceeded

PressF1toentertheSetupUtilityprogram.
ThenpressF10tosaveandexittheSetupUtility
program.

Chapter7.Symptom-to-FRUindex61

Miscellaneouserrormessages

Message/SymptomFRU/Action

ChangingdisplaycolorsDisplay/Monitor
Computerwillnotpower-off.See“Harddiskdriveboot

error”onpage59

ComputerwillnotRPLfromserver

ComputerwillnotperformaWakeonLAN(ifapplicable)1.Checkpowersupplyandsignalcableconnections

Deadcomputer.See“Harddiskdrivebooterror”onpage

.

59

Diskettedrivein-uselightremainsonordoesnotlight
whendriveisactive.

Flashingcursorwithanotherwiseblankdisplay.

IncorrectmemorysizeduringPOST

"InsertaDiskette"iconappearswithaknown-good
diagnosticsdisketteintherst3.5-inchdiskettedrive.

Intensityorcolorvariesfromlefttorightofcharacters
andcolorbars

Nopowerorfannotrunning

.

1.PowerSwitch

2.SystemBoard

3.Risercard,ifinstalled

1.Ensurethatnetworkisinstartupsequenceasrst
deviceorrstdeviceafterdiskette

2.EnsurethatnetworkadapterisenabledforRPL

3.Networkadapter(Advisenetworkadministratorof
newMACaddress)

tonetworkadapter

2.Ensurethattheoperatingsystemsettingsaresetto
enableWakeonLAN

3.EnsureWakeonLANfeatureisenabledin
Setup/Conguration(see“StartingtheSetupUtility
program”onpage53)

4.EnsurenetworkadministratorisusingcorrectMAC
address

5.EnsurenointerruptorI/Oaddressconicts

6.Networkadapter(advisenetworkadministratorof
newMACaddress)

1.PowerSupply

2.SystemBoard

1.DisketteDrive

2.SystemBoard

3.DisketteDriveCable

1.SystemBoard

2.PrimaryHardDiskDrive

3.HardDiskDriveCable

1.RuntheMemorytests

2.MemoryModule

3.SystemBoard

1.SystemBoard

2.DisketteDriveCable

3.NetworkAdapter

1.Display

2.Videoadapter(ifpresent)

3.SystemBoard

1.See“Harddiskdrivebooterror”onpage59.

62LenovoH520gHardwareMaintenanceManual

Message/SymptomFRU/Action

Non-systemdiskordiskerror-typemessagewitha
known-gooddiagnosticdiskette.

Otherdisplaysymptomsnotlistedabove(includingblank
orillegibledisplay)

Power-onindicatororharddiskdrivein-uselightnoton,
butcomputerworkscorrectly

Printerproblems1.Printer

Programloadsfromtheharddiskwithaknown-good
diagnosticsdisketteintherst3.5-inchdiskettedrive

RPLcomputercannotaccessprogramsfromitsownhard
disk.

RPLcomputerdoesnotRPLfromserver

Serialorparallelportdevicefailure(systemboardport)1.ExternalDeviceSelf-TestOK?

Serialorparallelportdevicefailure(adapterport)1.ExternalDeviceSelf-TestOK?

Someorallkeysonthekeyboarddonotwork

1.DisketteDrive

2.SystemBoard

3.DisketteDriveCable

1.Display

2.SystemBoard

1.Powerswitch/LEDassembly

2.SystemBoard

2.SystemBoard

1.RunSetupandcheckStartupsequence.

2.DisketteDrive

3.DisketteDriveCable

4.SystemBoard

5.PowerSupply

1.IfnetworkadministratorisusingLCCMHybridRPL,

checkstartupsequence:
a.Firstdevice-network
b.Seconddevice-harddisk

2.Harddiskdrive

1.Checkstartupsequence

2.CheckthenetworkadapterLEDstatus

2.ExternalDevice

3.Cable

4.SystemBoard

2.ExternalDevice

3.Cable

4.AlternateAdapter

5.SystemBoard

1.Keyboard

2.KeyboardCable

3.SystemBoard

Undeterminedproblems

Ifyouencounterundeterminedproblems,dothefollowing:

1.T urnoffthecomputerandthepower.

2.Removeordisconnectthefollowingcomponents(ifinstalled)oneatatime.
a.Externaldevices(modem,printer,ormouse)
b.Anyadaptercards
c.Memorymodules

Chapter7.Symptom-to-FRUindex63

d.Extendedvideomemory
e.ExternalCache
f.ExternalCacheRAM
g.Harddiskdrive
h.Diskettedrive

3.T urnonthepowerandthecomputertore-testthesystem.

4.Repeatsteps1through3untilyoundthefailingdeviceoradaptercards.

Ifalldevicesandadaptercardshavebeenremoved,andtheproblemcontinues,replacethesystemboard.

64LenovoH520gHardwareMaintenanceManual

Chapter8.Locations

Thischapterintroducesthelocationsofthecomputerhardwarecomponents.

Locations

Thissectionprovidesinformationtohelpyoulocateyourcomputerconnectors,components,partson
thesystemboard,andinternaldrives.

Note:Thecomponentsinyourcomputermightlookslightlydifferentfromtheillustrations.

Locatingconnectors,controls,andindicatorsonthefrontofyour computer

Figure1“Frontconnector,control,andindicatorlocations”onpage65showsthelocationsofthe
connectors,controls,andindicatorsonthefrontofyourcomputer.

Figure1.Frontconnector,control,andindicatorlocations

1Powerswitch5Headphoneconnector
2Harddiskdriveactivityindicator6Microphoneconnector
3Opticaldriveeject/closebutton7USBconnectors(USBports2)
4Memorycardreader(optional)

©CopyrightLenovo2013

65

Locatingconnectorsontherearofyourcomputer

Figure2“Rearconnectorlocations”onpage66showsthelocationsoftheconnectorsontherearofyour
computer.Someconnectorsontherearofyourcomputerarecolor-codedtohelpyoudeterminewhereto
connectthecablesonyourcomputer.

Figure2.Rearconnectorlocations

1Voltage-selectionswitch(availableonsome

models)

2Powercordconnector
3DVImonitorconnector

4VGAmonitorconnector
5USBconnectors(USBports3to6)13Optionalserialport
6Microphoneconnector14Ethernetconnector
7Audioline-outconnector
8Audioline-inconnector

9PCIExpressx16graphicscardslot

10PCIExpressx1cardslots(2)
11Integratedcablelock(Kingstonlock)slot
12Padlockloop

15Optionalserialport

LocatingmajorFRUsandCRUs

Figure3“Componentlocations”onpage67showsthelocationsofthevariouscomponentsinyour
computer.Toremovethecomputercover,see“Removingthecomputercover”onpage72.

66LenovoH520gHardwareMaintenanceManual

Figure3.Componentlocations

ThefollowingtableliststhemajorFRUsshowninFigure3“Componentlocations”onpage67andidenties
whichFRUsalsoareself-serviceCRUsoroptional-serviceCRUs.

Notes:

•Self-serviceCRUs:TheseCRUsunplugoraresecuredbynomorethantwoscrews.Examplesof
thesetypesofCRUsincludethekeyboard,themouse,anyUSBdevice,andthepowercord.Other
self-serviceCRUsdependingonproductdesignmightincludememorymodules,adaptercards,hard
diskdrives,andopticaldrives.

•Optional-serviceCRUs:TheseCRUsareisolatedpartswithinthecomputerandareconcealedbyan
accesspanelthatistypicallysecuredbymorethantwoscrews.Oncetheaccesspanelisremoved,the
specicCRUisvisible.

NumberFRUdescription

1

2

3

4

5

6

7

8

Heatsinkandfanassembly
MemorymodulesYesNo
FrontbezelYesNo
HarddiskdriveNoYes
PCIcard(installedinsomemodels)
PCIExpressx16graphicscardslot
Systemboard
PowersupplyassemblyNoYes

Self-serviceCRUOptional-serviceCRU

NoYes

YesNo
Yes

NoNo

Chapter8.Locations67

NO

Locatingpartsonthesystemboard

Figure4“Systemboardpartlocations”onpage68showsthelocationsofthepartsonthesystemboard.

Figure4.Systemboardpartlocations

14-pinpowerconnector

12ClearCMOS(ComplementaryMetalOxideSemiconductor)

/Recoveryjumper

2Microprocessor

13FrontUSBconnector2(forconnectingadditionalUSB

devices)

3Microprocessorfanconnector

14FrontUSBconnector3(forconnectingadditionalUSB

devices)

4Memoryslot1(DIMM1)
5Memoryslot2(DIMM2)16Serial(COM2)connector
6Thermalsensorconnector17Frontaudioconnector
724-pinpowerconnector18Internalspeakerconnector
8Powerfanconnector

9SATAconnectors(3)20PCIExpressx16graphicscardslot
10Frontpanelconnector(forconnectingLED

15Battery

19PCIExpressx1cardslots(2)

21Systemfanconnector

indicatorsandpowerswitch)

11FrontUSBconnector1(forconnectingUSB

ports1and2onthefrontbezel)

68LenovoH520gHardwareMaintenanceManual

Locatinginternaldrives

Internaldrivesaredevicesthatyourcomputerusestoreadandstoredata.Y oucanadddrivestoyour
computertoincreasestoragecapacityandenableyourcomputertoreadothertypesofmedia.Internal
drivesareinstalledinbays.Inthismanual,thebaysarereferredtoasbay1,bay2,andsoon.

Wheninstallingorreplacinganinternaldrive,itisimportanttonotethetypeandsizeofthedrivethatyou
caninstallorreplaceineachbayandcorrectlyconnectthecablestothedriveinstalled.Refertothe
appropriatesectionin“Installingorreplacinghardware”onpage71forinstructionsonhowtoinstallor
replaceinternaldrivesforyourcomputer.

Figure5“Drivebaylocations”onpage69

showsthelocationsofthedrivebays.

Figure5.Drivebaylocations

1Bay1-Opticaldrivebay(withanopticaldriveinstalledonsomemodels)
2Bay2-Primaryharddiskdrivebay(witha3.5-inchSATAharddiskdriveinstalled)
3Bay3-Secondaryharddiskdrivebay

Chapter8.Locations69

70LenovoH520gHardwareMaintenanceManual

Chapter9.ReplacingFRUs

Important:BesuretoreadandunderstandChapter2“Safetyinformation”onpage3beforeyoureplace

anyFRU.Theseprecautionsandguidelineswillhelpyouworksafely.

FRUreplacementsaretobedoneonlybytrainedservicetechnicians.

ThischapterdoesnotcontaintheremoveorreplaceprocedureforallFRUs.OnlythemajorFRUsare
documented.

Handlingstatic-sensitivedevices

Donotopenthestatic-protectivepackagecontainingthenewpartuntilthedefectiveparthasbeenremoved
fromthecomputerandyouarereadytoinstallthenewpart.Staticelectricity,althoughharmlesstoyou,can
seriouslydamagecomputercomponentsandparts.

Whenyouhandlecomputerpartsandcomponents,taketheseprecautionstoavoidstatic-electricitydamage:

•Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.

•Alwayscarefullyhandlethepartsandothercomputercomponents.HandlePCIcards,memorymodules,
systemboards,andmicroprocessorsbytheedges.Nevertouchexposedcircuitry.

•Preventothersfromtouchingthepartsandothercomputercomponents.

•Beforeyoureplaceanewpart,touchthestatic-protectivepackagecontainingthenewparttoametal
expansion-slotcoverorotherunpaintedmetalsurfaceonthecomputerforatleasttwoseconds.This
reducesstaticelectricityfromthepackageandyourbody.

•Removethenewpartfromthestatic-protectivepackageanddirectlyinstallitinthecomputerwithout
placingitonanyothersurface.Ifitishardforyoutodothisinyourspecicsituation,placethe
static-protectivepackageofthenewpartonasmooth,levelsurface,andthenplacethenewparton
thestatic-protectivepackage.

•Donotplacethepartonthecomputercoverorothermetalsurface.

Installingorreplacinghardware

Thissectionprovidesinstructionsonhowtoinstallorreplacehardwareforyourcomputer.Youcanexpand
thecapabilitiesofyourcomputerandmaintainyourcomputerbyinstallingorreplacinghardware.

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Notes:

1.UseonlycomputerpartsprovidedbyLenovo.

2.Wheninstallingorreplacinganoption,usetheappropriateinstructionsinthissectionalongwiththe
instructionsthatcomewiththeoption.

©CopyrightLenovo2013

71

Removingthecomputercover

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoremovethecomputercover.

CAUTION:

Turnoffthecomputerandwaitthreetoveminutestoletthecomputercoolbeforeremovingthe
computercover.

Toremovethecomputercover,dothefollowing:

1.Removeanymediafromthedrivesandturnoffallattacheddevicesandthecomputer.

2.Disconnectallpowercordsfromelectricaloutlets.

3.Disconnectthepowercords,Input/Outputcables,andanyothercablesthatareconnectedtothe
computer.See“Locatingconnectors,controls,andindicatorsonthefrontofyourcomputer”onpage

and“Locatingconnectorsontherearofyourcomputer”onpage66.

65

4.Removeanylockingdevicethatsecuresthecomputercover,suchasapadlockoranintegrated
cablelock.

5.Removethetwoscrewsthatsecurethecomputercoverandslidethecomputercovertotherearto
removeit.

Figure6.Removingthecomputercover

72LenovoH520gHardwareMaintenanceManual

Removingandreinstallingthefrontbezel

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoremoveandreinstallthefrontbezel.

Toremoveandreinstallthefrontbezel,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Removethefrontbezelbyreleasingthethreeplastictabsontheleftsideandpivotingthefrontbezel
outward.

Figure7.Removingthefrontbezel

Chapter9.ReplacingFRUs73

4.T oreinstallthefrontbezel,alignthethreeplastictabsontherightsideofthefrontbezelwiththe
correspondingholesinthechassis,thenpivotthefrontbezelinwardsuntilitsnapsintopositionon
theleftside.

Figure8.Reinstallingthefrontbezel

5.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

InstallingorreplacingaPCIcard

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

ThissectionprovidesinstructionsonhowtoinstallorreplaceaPCIcard.YourcomputerhastwoPCI
Expressx1cardslotsandonePCIExpressx16graphicscardslot.

ToinstallorreplaceaPCIcard,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

74LenovoH520gHardwareMaintenanceManual

3.Attherearofthecomputer,removethescrewthatsecuresthePCIcardlatch.

Figure9.RemovingthescrewthatsecuresthePCIcardlatch

4.DependingonwhetheryouareinstallingorreplacingaPCIcard,dooneofthefollowing:

•IfyouareinstallingaPCIcard,removetheappropriatemetalslotcover.

Chapter9.ReplacingFRUs75

•IfyouarereplacinganoldPCIcard,grasptheoldcardthatiscurrentlyinstalledandgentlypullit

outoftheslot.

Figure10.RemovingaPCIcard

Notes:

a.Thecardtstightlyintothecardslot.Ifnecessary,alternatemovingeachsideofthecardasmall

amountuntilitisremovedfromthecardslot.

b.Ifthecardisheldinplacebyaretaininglatch,pressthecardretaininglatch1asshownto

disengagethelatch.Graspthecardandgentlypullitoutoftheslot.

5.RemovethenewPCIcardfromitsstatic-protectivepackage.

6.InstallthenewPCIcardintotheappropriateslotonthesystemboard.See“Locatingpartsonthe
systemboard”onpage68.

Note:IfyouareinstallingaPCIExpressx16graphicscard,makesurethememoryslotretainingclips
areclosedbeforeyouinstallthegraphicscard.

7.PivotthecardlatchtotheclosedpositiontosecurethePCIcard.

76LenovoH520gHardwareMaintenanceManual

Figure11.InstallingaPCIcard

8.ReinstallthescrewtosecurethePCIcardlatchinplace.

9.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

Replacingthebattery

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Yourcomputerhasaspecialtypeofmemorythatmaintainsthedate,time,andsettingsforbuilt-infeatures,
suchasparallel-portassignments(conguration).Abatterykeepsthisinformationactivewhenyouturn
offthecomputer.

Thebatterynormallyrequiresnochargingormaintenancethroughoutitslife;however,nobatterylasts
forever.Ifthebatteryfails,thedate,time,andcongurationinformation(includingpasswords)arelost.An
errormessageisdisplayedwhenyouturnonthecomputer.

Refertothe“Lithiumbatterynotice”intheSafety,Warranty,andSetupGuideforinformationaboutreplacing
anddisposingofthebattery.

Toreplacethebattery,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Locatethebattery.See“Locatingpartsonthesystemboard”onpage68.

Chapter9.ReplacingFRUs77

4.Removetheoldbattery.

Figure12.Removingtheoldbattery

5.Installanewbattery.

Figure13.Installinganewbattery

6.Reinstallthecomputercoverandconnectthecables.See“Completingthepartsreplacement”on
page93

.

Note:Whenthecomputeristurnedonforthersttimeafterreplacingthebattery,anerrormessage
mightbedisplayed.Thisisnormalafterreplacingthebattery.

7.T urnonthecomputerandallattacheddevices.

8.UsetheSetupUtilityprogramtosetthedate,time,andanypasswords.SeeChapter6“UsingtheSetup
Utilityprogram”onpage53.

9.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

Installingorreplacingamemorymodule

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoinstallorreplaceamemorymodule.

YourcomputerhastwoslotsforinstallingorreplacingDDR3UDIMMsthatprovideuptoamaximumof
8GBsystemmemory.Wheninstallingorreplacingamemorymodule,use1GB,2GB,or4GBDDR3
UDIMMsinanycombinationuptoamaximumof8GB.

Toinstallorreplaceamemorymodule,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Locatethememoryslots.See“Locatingpartsonthesystemboard”onpage68.

78LenovoH520gHardwareMaintenanceManual

5.Removeanypartsthatmightpreventyouraccesstothememoryslots.Dependingonyourcomputer
model,youmightneedtoremovethePCIExpressx16graphicscardforeasieraccesstothememory
slots.See“InstallingorreplacingaPCIcard”onpage74.

6.Dependingonwhetheryouareinstallingorreplacingamemorymodule,dooneofthefollowing:

•Ifyouarereplacinganoldmemorymodule,opentheretainingclipsandgentlypullthememory

moduleoutofthememoryslot.

Figure14.Removingamemorymodule

•Ifyouareinstallingamemorymodule,opentheretainingclipsofthememoryslotintowhichyou

wanttoinstallthememorymodule.

Figure15.Openingtheretainingclips

Chapter9.ReplacingFRUs79

7.Positionthenewmemorymoduleoverthememoryslot.Makesurethatthenotch1onthememory
modulealignscorrectlywiththeslotkey2onthesystemboard.Pushthememorymodulestraight
downintotheslotuntiltheretainingclipsclose.

Figure16.Installingamemorymodule

8.ReinstallthePCIExpressx16graphicscardifyouhaveremovedit.

9.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

Replacingtheopticaldrive

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoinstallorreplacetheopticaldrive.

Note:Theopticaldriveisonlyavailableinsomemodels.

Toreplaceanopticaldrive,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage73.

4.Removethethreescrewsthatsecuretheopticaldrive.Then,slidetheopticaldriveoutofthefront
ofthecomputer.

80LenovoH520gHardwareMaintenanceManual

Figure17.Removingtheopticaldrive

5.Slidethenewopticaldriveintothedrivebayfromthefrontandalignthescrewholesinthenewoptical
drivewiththecorrespondingholesinthedrivebay.Then,installthethreescrewstosecurethenew
opticaldriveinplace.

Figure18.Installingtheopticaldrive

Chapter9.ReplacingFRUs81

6.Connectoneendofthesignalcabletotherearofthenewopticaldriveandtheotherendtoanavailable
SATAconnectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage68.Then,
locateanavailableve-wirepowerconnectorandconnectittotherearofthenewopticaldrive.

Figure19.Connectingtheopticaldrive

7.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

Replacingtheheatsinkandfanassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoreplacetheheatsinkandfanassembly.

DANGER

Attention/Caution/Dangericon,warningusersandservicersofahotsurfacenearbyTheheatsink
andfanassemblymightbeveryhot.Turnoffthecomputerandwaitthreetoveminutestoletthe
computercoolbeforeremovingthecomputercover.

Toreplacetheheatsinkandfanassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Locatetheheatsinkandfanassembly.See“LocatingmajorFRUsandCRUs”onpage66.

5.Disconnecttheheatsinkandfanassemblycablefromthemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage68.

82LenovoH520gHardwareMaintenanceManual

6.Followthissequencetoremovethefourscrewsthatsecuretheheatsinkandfanassemblytothe
systemboard:

a.Partiallyremovescrew1,thenfullyremovescrew2,andthenfullyremovescrew1.
b.Partiallyremovescrew3,thenfullyremovescrew4,andthenfullyremovescrew3.

Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsinkandfanassembly.

Figure20.Removingtheheatsinkandfanassembly

7.Liftthefailingheatsinkandfanassemblyoffthesystemboard.

Notes:

a.Youmighthavetogentlytwisttheheatsinkandfanassemblytofreeitfromthemicroprocessor.
b.Whenhandlingtheheatsinkandfanassembly,donottouchthethermalgreaseonthebottom

oftheheatsinkandfanassembly.

8.Placethenewheatsinkandfanassemblyonthesystemboardsothatthefourscrewsarealignedwith
thecorrespondingholesinthesystemboard.

Note:Positionthenewheatsinkandfanassemblysothattheheatsinkandfanassemblycableis
towardthemicroprocessorfanconnectoronthesystemboard.

9.Followthefollowingsequencetoinstallthefourscrewstosecurethenewheatsinkandfanassembly.
Donotover-tightenthescrews.

a.Partiallytightenscrew1,thenfullytightenscrew2,andthenfullytightenscrew1.
b.Partiallytightenscrew3,thenfullytightenscrew4,andthenfullytightenscrew3.

10.Connectthenewheatsinkandfanassemblycabletothemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage68.

11.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

Chapter9.ReplacingFRUs83

Replacingthepowersupplyassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoreplacethepowersupplyassembly.

Althoughtherearenomovingpartsinyourcomputerafterthepowercordhasbeendisconnected,the
followingwarningsarerequiredforyoursafetyandproperUnderwritersLaboratories(UL)certication.

DANGER

Hazardousmovingparts.Keepngersandotherbodypartsaway.

DANGER

Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.

Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabel
attached.Therearenoserviceablepartsinsidethesecomponents.Ifyoususpectaproblemwith
oneoftheseparts,contactaservicetechnician.

Toreplacethepowersupplyassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Disconnectthepowersupplyassemblycablesfromalldrivesandfromthe24-pinpowerconnectorand
4-pinpowerconnectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage68

4.Laythecomputeronitssideandremovethefourscrewsattherearofthechassisthatsecurethe
powersupplyassembly.

.

Figure21.Removingthescrewsforthepowersupplyassembly

84LenovoH520gHardwareMaintenanceManual

5.Slidethepowersupplyassemblytothefrontofthecomputerandthenliftitoutofthechassis.

6.Makesurethatthenewpowersupplyassemblyisthecorrectreplacement.Somepowersupply
assembliesautomaticallysensethevoltage,somepowersupplyassembliesarevoltagespecic,and
somepowersupplyassemblieshaveavoltage-selectionswitch.Ifyourpowersupplyassemblyhas
avoltage-selectionswitch,makesurethatyousetthevoltage-selectionswitchtomatchthevoltage
availableatyourelectricaloutlet.Ifnecessary,useaballpointpentoslidethevoltage-selectionswitch
tothecorrectposition.

•Ifthevoltagesupplyrangeinyourlocalcountryorregionis100–127Vac,setthevoltage-selection

switchto115V.

•Ifthevoltagesupplyrangeinyourlocalcountryorregionis200–240Vac,setthevoltage-selection

switchto230V.

7.Installthenewpowersupplyassemblyintothechassissothatthescrewholesinthepowersupply
assemblyalignwiththoseinthechassis.

8.Installandtightenthefourscrewstosecurethepowersupplyassembly.

Note:UseonlyscrewsprovidedbyLenovo.

9.Reconnectthepowersupplyassemblycablestothesystemboardandeachofthedrives.

10.Securethepowersupplyassemblycableswiththecableclipsandtiesinthechassis.

11.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

Replacingthemicroprocessor

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoreplacethemicroprocessor.

CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwaitthreetove
minutestoletthecomputercoolbeforeremovingthecomputercover.

Toreplacethemicroprocessor,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Removetheheatsinkandfanassembly.See“Replacingtheheatsinkandfanassembly”onpage82.

Note:Placetheheatsinkandfanassemblyonitssidesothatthethermalgreaseonthebottomofit
doesnotgetincontactwithanything.

Chapter9.ReplacingFRUs85

5.Liftthesmallhandle1andopentheretainer2toaccessthemicroprocessor3.

Figure22.Accessingthemicroprocessor

6.Liftthemicroprocessorstraightupandoutofthemicroprocessorsocket.

Figure23.Removingthemicroprocessor

Notes:

a.Yourmicroprocessorandsocketmightlookdifferentfromtheoneillustrated.

86LenovoH520gHardwareMaintenanceManual

b.Notetheorientationofthemicroprocessorinthesocket.Youcaneitherlookforthesmalltriangle1

ononecornerofthemicroprocessorornotetheorientationofthenotches2onthemicroprocessor.
Thisisimportantwheninstallingthenewmicroprocessoronthesystemboard.

c.Touchonlytheedgesofthemicroprocessor.Donottouchthegoldcontactsonthebottom.
d.Donotdropanythingontothemicroprocessorsocketwhileitisexposed.Thesocketpinsmustbe

keptascleanaspossible.

7.Makesurethatthesmallhandleisintheraisedpositionandthemicroprocessorretainerisfullyopen.

8.Removetheprotectivecoverthatprotectsthegoldcontactsofthenewmicroprocessor.

9.Holdthenewmicroprocessorbyitssidesandalignthesmalltriangleononecornerofthenew
microprocessorwiththecorrespondingsmalltriangleononecornerofthemicroprocessorsocket.

10.Lowerthenewmicroprocessorstraightdownintothemicroprocessorsocketonthesystemboard.

Figure24.Installingthemicroprocessor

11.Closethemicroprocessorretainerandlockitintopositionwiththesmallhandletosecurethenew
microprocessorinthesocket.

12.Reinstalltheheatsinkandfanassembly.See“Replacingtheheatsinkandfanassembly”onpage82.

13.Reconnectallcablesthatweredisconnectedfromthesystemboard.

14.T ocompletethereplacement,goto“Completingthepartsreplacement”onpage93.

Chapter9.ReplacingFRUs87

Replacingthesystemboard

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoreplacethesystemboard.

CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwaitthreetove
minutestoletthecomputercoolbeforeremovingthecomputercover.

Toreplacethesystemboard,dothefollowing:

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.RemoveallmemorymodulesandPCIcardsthatarecurrentlyinstalled.See“Installingorreplacinga
memorymodule”onpage78and“InstallingorreplacingaPCIcard”onpage74.

5.Carefullytakenoteofthelocationsofallcableconnectionsonthesystemboardanddisconnectall
thecables.See“Locatingpartsonthesystemboard”onpage68.

6.Removetheheatsinkandfanassemblyfromthefailingsystemboard.See“Replacingtheheatsinkand
fanassembly”onpage82.

88LenovoH520gHardwareMaintenanceManual

7.Removethesixscrewsthatsecurethesystemboard.

Figure25.Removingthesixscrewsthatsecurethesystemboard

8.Carefullyslidethesystemboardsothatitcanbereleasedfromthemountingstudsthatsecurethe
systemboardinplace.

9.Liftthesystemboardoutofthechassis.

10.Removethemicroprocessorfromthefailingsystemboardandinstallitonthenewsystemboard.
See“Replacingthemicroprocessor”onpage85

.

11.Installthenewsystemboardintothechassisbyaligningthesixmountingstudsinthechassiswiththe
correspondingholesinthenewsystemboard.Carefullyslidethenewsystemboardintothechassisuntil
itissecuredinplacebythemountingstuds.Then,installthesixscrewstosecurethesystemboard.

12.Installtheheatsinkandfanassemblyandconnecttheheatsinkandfanassemblycabletothenew
systemboard.See“Replacingtheheatsinkandfanassembly”onpage82.

13.InstallallmemorymodulesandPCIcardsremovedfromthefailingsystemboardonthenewsystem
board.See“Installingorreplacingamemorymodule”onpage78and“InstallingorreplacingaPCI
card”onpage74.

14.Reconnectallremainingcablestothesystemboard.See“Locatingpartsonthesystemboard”
onpage68.

15.T ocompletethereplacement,goto“Completingthepartsreplacement”onpage93.

Thefailingsystemboardmustbereturnedwithamicroprocessorsocketcovertoprotectthepinsduring
shippingandhandling.

Toinstallthemicroprocessorsocketcover,dothefollowing:

Chapter9.ReplacingFRUs89

1.Releasetheleversecuringthemicroprocessorretainerandopentheretainertoaccessthe
microprocessor.

2.Graspthemicroprocessoronthesidesandliftitstraightupandoutofthesocket.Donottouchthe
contactsonthemicroprocessorsocket.

3.Lowerthemicroprocessorretainer,andthenlowerthelevertosecuretheretainer.Makesurethe
leverislockedintoposition.

4.Notetheorientationofthesocketcover,andinstallonesideofthesocketcoverintothemicroprocessor
socket.

Figure26.Installingonesideofthesocketcoverintothemicroprocessorsocket

Note:Yourmicroprocessorsocketandcovermightlookslightlydifferentfromtheillustration.

5.Carefullypresstheothersideofthesocketcoverdownwarduntilthesocketcoversnapsintoposition.

6.Carefullycheckthefourcornersofthesocketcovertomakesurethatthecoverissecuredinthe
microprocessorsocket.

7.Followanyadditionalinstructionsincludedwiththereplacementpartyoureceived.

Replacingtheprimaryharddiskdrive

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoreplacetheprimaryharddiskdrive.

Toreplacetheprimaryharddiskdrive,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Locatetheprimaryharddiskdrive.See“Locatinginternaldrives”onpage69.

Note:Thereisalsoasecondaryharddiskdrivebayforyoutopurchaseandinstallasecondaryhard
diskdrivebyyourself.Ifyouwanttoinstallasecondaryharddiskdrive,usethesamewayofinstalling
theprimaryharddiskdrive.

4.Disconnectthesignalcableandthepowercablefromtheharddiskdrive.

5.Removethefourscrewsthatsecuretheharddiskdrive.Then,slidetheharddiskdriveoutofthechassis.

90LenovoH520gHardwareMaintenanceManual

Figure27.Removingtheprimaryharddiskdrive

6.Slidethenewharddiskdriveintotheharddiskdrivebayandalignthescrewholesinthenewhard
diskdrivewiththecorrespondingholesinthedrivebay.Then,installthefourscrewstosecurethe
newharddiskdriveinplace.

Figure28.Installingtheharddiskdrive

7.Connectoneendofthesignalcabletotherearofthenewharddiskdriveandtheotherendtoan
availableSATAconnectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage68.
Then,locateanavailableve-wirepowerconnectorandconnectittotherearofthenewharddiskdrive.

Chapter9.ReplacingFRUs91

Figure29.ConnectingaSATAharddiskdrive

8.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

ReplacingthefrontaudioandUSBassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheUserGuide.ToobtainacopyoftheUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides

ThissectionprovidesinstructionsonhowtoreplacethefrontaudioandUSBassembly.

ToreplacethefrontaudioandUSBassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage73.

4.LocatethefrontaudioandUSBassembly.

5.DisconnectthefrontaudioandUSBassemblycablesfromthesystemboard.See“Locatingpartson
thesystemboard”onpage68.

Note:Makesureyounotethelocationsofthecableswhenyoudisconnectthecablesfromthesystem
board.

92LenovoH520gHardwareMaintenanceManual

6.RemovethescrewthatsecuresthefrontaudioandUSBassemblybrackettothechassistoremove
thebracketfromthechassis.

Figure30.RemovingthefrontaudioandUSBassembly

7.InstallthenewfrontaudioandUSBassemblyintothechassisandalignthescrewholeinthebracket
withthecorrespondingholeinthechassis.

8.InstallthescrewtosecurethenewfrontaudioandUSBassemblytothechassis.

9.ReconnectthefrontaudioandUSBassemblycablestothefrontaudioconnectorandthefrontUSB
connectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage68.

10.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage93.

Completingthepartsreplacement

Aftercompletingtheinstallationorreplacementforallparts,youneedtoreinstallthecomputercoverand
reconnectcables.Dependingonthepartsyouinstalledorreplaced,youmightneedtoconrmtheupdated
informationintheSetupUtilityprogram.RefertoChapter6“UsingtheSetupUtilityprogram”onpage53.

Toreinstallthecomputercoverandreconnectcablestoyourcomputer,dothefollowing:

1.Makesurethatallcomponentshavebeenreassembledcorrectlyandthatnotoolsorloosescrews
areleftinsideyourcomputer.See“LocatingmajorFRUsandCRUs”onpage66forthelocationsof
variouscomponentsinyourcomputer.

2.Makesurethatthecablesareroutedcorrectly.Keepcablesclearofthehingesandsidesofthe
computerchassistoavoidinterferencewithclosingthecomputercover.

3.Ifyouhaveremovedthefrontbezel,reinstallit.See“Removingandreinstallingthefrontbezel”on
page73.

Chapter9.ReplacingFRUs93

4.Positionthecomputercoveronthechassissothattherailguidesonthebottomofthecomputer
coverengagetherailsonthechassis.Then,pushthecovertothefrontofthecomputeruntilitsnaps
intoposition.

Figure31.Reinstallingthecomputercover

5.Ifthereisapadlockavailable,lockthecomputercover.

6.Ifthereisanintegratedcablelockavailable,lockthecomputer.

7.Reconnecttheexternalcablesandpowercordstothecomputer.See“Locatingconnectorsonthe
rearofyourcomputer”onpage66

.

8.T oupdateyourconguration,refertoChapter6“UsingtheSetupUtilityprogram”onpage53.

Note:Inmostareasoftheworld,LenovorequiresthereturnofthedefectiveCustomerReplaceableUnit
(CRU).InformationaboutthiswillcomewiththeCRUorwillcomeafewdaysaftertheCRUarrives.

94LenovoH520gHardwareMaintenanceManual

Chapter10.FRUlists

Thischapterliststheinformationontheeldreplaceableunits(FRUs)forLenovodesktopcomputer.

Attention:BesuretoreadandunderstandallthesafetyinformationbeforereplacinganyFRUs.

Notes:FRUsthathavea1or2intheCRUcolumnareCustomerReplaceableUnits(CRUs).

•1–identiespartsthatarefairlysimpletoreplace,requiringfewornotools.

•2–identiespartsthatareslightlymoredifculttoreplace.

•N-identiespartsthatarenottobereplacedbythecustomer.

Description

Motherboard

IntelH61IVBDDR3mATX(GALevel)Sumba-WIN8
IntelH61IVBDDR3mATX(GALevel)Sumba-WIN8pro
IntelH61IVBDDR3mATX(GALevel)Sumba-non-WIN8
EmATXIVBTPA@H61_ALC662_R8111E®-WIN8
EmATXIVBTPA@H61_ALC662_R8111E®-WIN8pro
EmATXIVBTPA@H61_ALC662_R8111E®-nonWIN8

Processors

i7-3770SIvyBridge8MBLGA3.10GHz65W
i5-3570SIvyBridge6MBLGA3.10GHz65W
i5-3470SIvyBridge6MBLGA2.9GHz65W
i3-324055WIvyBridge3.4GHz3MB2CLGA
i3-322055WIvyBridge3.3GHz3MB2CLGA
PentiumG2020IvyBridge3MBLGA2.9GHz55W
CeleronG1610IvyBridge2MBLGA2.6GHz55W
CeleronG550SANDYBRIDGE2MB2CFCLGA2.6GHZ65W

Memory

2GBPC3-128001600MHzDDR3UDIMM
2GBPC3-128001600MHzDDR4UDIMM
2GBPC3-128001600MHzDDR5UDIMM
2GBPC3-128001600MHzDDR6UDIMM
4GBPC3-128001600MHzDDR3UDIMM
4GBPC3-128001600MHzDDR4UDIMM
4GBPC3-128001600MHzDDR5UDIMM
4GBPC3-128001600MHzDDR6UDIMM

HardDiskDrive

SATA250GB7200RPM/3Gb/8M

Servicepartnumber
(FRU)

03T7136N
03T7137N
03T7147N
03T7136N
03T7137N
03T7147N

03T6578N
03T6558N
03T6573N
03T8186N
03T8185N
03T7106N
03T7108N
03T6671N

03T65801
03T65801
03T65801
03T65801
03T65661
03T65661
03T65661
03T65661

40Y90362

CRUID

©CopyrightLenovo2013

95

SATA250GB7200RPM/3Gb/8M
SATA250GB7200RPM/3Gb/8M
SATA250GB7200RPM/3Gb/8M
SATA250GB7200RPM/3Gb/8M
SATA250GB7200RPM/3Gb/8M
SATA250GB7200RPM/3Gb/8M
SATA250GB7200RPM/3Gb/8M
SATA500GB7200RPM/3Gb/16M
SATA500GB7200RPM/3Gb/16M
SATA500GB7200RPM/3Gb/16M
SATA500GB7200RPM/3Gb/16M
SATA500GB7200RPM/3Gb/16M
SATA500GB7200RPM/3Gb/16M
SATA500GB7200RPM/3Gb/16M
SATA500GB7200RPM/3Gb/16M
SATA500GB7200RPM/3Gb/16M
SATA1TB7200RPM/3Gb
SATA1TB7200RPM/3Gb
SATA1TB7200RPM/3Gb
SATA1TB7200RPM/3Gb
SATA1TB7200RPM/3Gb
SATA1TB7200RPM/3Gb

OpticalDrive

DVD-ROMDrive-16x/48x-SATAforDOS
DVD-ROMDrive-16x/48x-SATAforDOS
DVD-ROMDrive-16x/48x-SATAforDOS
DVD-ROMDrive-16x/48x-SATAforDOS
DVD-ROMDrive-16x/48x-SATAforDOS
DVD-ROMDrive-16x/48x-SATAforDOS
DVD-ROMDrive-16x/48x-SATAforDOS
DVD-ROMDrive-16x/48x-SATAforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS
DVDRecorderRambo8-SATA12XRAMWRITEforDOS

45K04082
45K04082
45K04082
03T70392
03T70392
45K06272
03T70392
45K04102
45K04102
45K04102
45K04102
03T70412
03T70412
45K06302
45K06292
03T70412
45K04122
45K04122
45K04122
03T70422
03T70422
45K06232

71Y55431
71Y55431
71Y55431
71Y55431
71Y55431
71Y55431
71Y55431
71Y55431
71Y55451
71Y55451
71Y55451
71Y55451
71Y55451
71Y55451
71Y55451
71Y55451
71Y55451

96LenovoH520gHardwareMaintenanceManual