Lenovo K450 User Manual

IdeaCentreK4Series

ideaideaideaCentreidea

HardwareMaintenanceManual

MachineTypes:10120/90A0[K450ES];10121/90A1[K450Non-ES]

IdeaCentreK4Series
HardwareMaintenanceManual

MachineTypes:10120/90A0[K450ES];10121/90A1[K450Non-ES]

FirstEdition(May2013)24th

©CopyrightLenovo2013.

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

Contents

Chapter1.Aboutthismanual......1

ImportantSafetyInformation..........1

Chapter2.Safetyinformation......3

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

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

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

Handlingelectrostaticdischarge-sensitive

devices..................5

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

Safetynotices................6

Chapter3.Generalinformation.....9

Specications................9

Chapter4.GeneralCheckout.....11

Chapter5.UsingtheSetupUtility...13

StartingtheLenovoBIOSSetupUtilityprogram.13

Viewingandchangingsettings........13

Usingpasswords..............13

Enablingordisablingadevice........15

Selectingastartupdevice..........16

ExitingtheLenovoBIOSSetupUtilityprogram..17

POSTerrorcodes.............20

Undeterminedproblems...........20

Chapter7.Locations.........21

Identifyinginternalcomponents........21

Identifyingpartsonthesystemboard......21

Chapter8.Replacinghardware....23

Generalinformation.............23

Replacingthekeyboardandmouse......24

Removingthecomputercover........24

Removingthefrontbezel..........25

Replacingamemorymodule.........26

Replacingaharddiskdrive..........27

Replacinganopticaldrive..........28

Replacingagraphicscard..........29

ReplacingtheTV- T unercard.........31

ReplacingthePowersupply.........33

Replacingthemicroprocessorfan.......33

Replacingtheheat-sink...........34

ReplacingtheCPU.............35

ReplacingtheWi-Ficard...........37

Replacingthemotherboard..........38

Chapter6.Symptom-to-FRUIndex..19

Harddiskdrivebooterror..........19

PowerSupplyProblems...........19

Chapter9.Generalinformation....41

AdditionalServiceInformation........41

©CopyrightLenovo2013

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ivIdeaCentreK4SeriesHardwareMaintenanceManual

Chapter1.Aboutthismanual

ThismanualcontainsserviceandreferenceinformationforIdeaCentreK450computerslistedonthecover.
ItisintendedonlyfortrainedservicerswhoarefamiliarwithLenovocomputerproducts.

BeforeservicingaLenovoproduct,besuretoreadtheSafetyInformation.

ThedescriptionoftheTVcardinthismanualisonlyusedforthemachineswhichhavetheTVcard.Itis
invalidforthosemachineswhichdonothaveTVcard.

ImportantSafetyInformation

Besuretoreadallcautionanddangerstatementsinthisbookbeforeperforminganyoftheinstructions.

VeuillezliretouteslesconsignesdetypeDANGERetATTENTIONduprésentdocumentavantd’exécuter
lesinstructions.

LesenSieunbedingtalleHinweisevomTyp“ACHTUNG”oder“VORSICHT”indieserDokumentation,bevor
SieirgendwelcheVorgängedurchführen

LeggereleistruzioniintrodottedaA TTENZIONEePERICOLOpresentinelmanualeprimadieseguireuna
qualsiasidelleistruzioni

Certique-sedelertodasasinstruçõesdecuidadoeperigonestemanualantesdeexecutarqualquer
umadasinstruções

Esimportantequeleatodaslasdeclaracionesdeprecauciónydepeligrodeestemanualantesdeseguir
lasinstrucciones.

©CopyrightLenovo2013

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2IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter2.Safetyinformation

Thischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.

Generalsafety

Followtheserulestoensuregeneralsafety:

•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.

•Whenliftinganyheavyobject:

1.Ensureyoucanstandsafelywithoutslipping.

2.Distributetheweightoftheobjectequallybetweenyourfeet.

3.Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempttolift.

4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe
musclesinyourback.

Donotattempttoliftanyobjectsthatweighmorethan16kg(35lb)orobjectsthatyouthinkare
tooheavyforyou.

•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,drillingsoldering,cuttingwire,attachingsprings,using
solvents,orworkinginanyotherconditionsthatmightbehazardoustoyoureyes.

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

•Reinstallallcoverscorrectlybeforereturningthemachinetothecustomer.

Electricalsafety

CAUTION:
Electricalcurrentfrompower,telephone,andcommunicationcablescanbehazardous.Toavoid
personalinjuryorequipmentdamage,disconnecttheattachedpowercords,telecommunication
systems,networks,andmodemsbeforeyouopenthecomputercovers,unlessinstructedotherwise
intheinstallationandcongurationprocedures.

©CopyrightLenovo2013

3

Observethefollowingruleswhenworkingonelectricalequipment.

Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoft
materialthatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.Manycustomershave,near
theirequipment,rubberoormatsthatcontainsmallconductiveberstodecreaseelectrostaticdischarges.
Donotusethistypeofmattoprotectyourselffromelectricalshock.

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

•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.

•Disconnectallpowerbefore:

–Performingamechanicalinspection

–Workingnearpowersupplies

–RemovingorinstallingFieldReplaceableUnits(FRUs)

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

•Ifyouneedtoworkonamachinethathasexposedelectricalcircuits,observethefollowingprecautions:

–Ensurethatanotherperson,familiarwiththepower-offcontrols,isnearyou.

Remember:Anotherpersonmustbetheretoswitchoffthepower,ifnecessary.

–Useonlyonehandwhenworkingwithpowered-onelectricalequipment;keeptheotherhandinyour

pocketorbehindyourback.
Remember:Theremustbeacompletecircuittocauseelectricalshock.Byobservingtheaboverule,
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.

4IdeaCentreK4SeriesHardwareMaintenanceManual

–Sendanotherpersontogetmedicalaid.

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.

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.

Chapter2.Safetyinformation5

•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.Y oucanusecoaxorconnector-outsideshellsonthesesystems.

–Usetheroundground-prongoftheacplugonac-operatedcomputers.

Groundingrequirements

Electricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrectsystemfunction.Proper
groundingoftheelectricaloutletcanbeveriedbyacertiedelectrician.

Safetynotices

ThecautionanddangersafetynoticesinthissectionareprovidedinthethelanguageofEnglish.

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.

•Connectanddisconnectcablesasdescribedinthefollowingtablewheninstalling,moving,or
openingcoversonthisproductorattacheddevices.

6IdeaCentreK4SeriesHardwareMaintenanceManual

ToConnect

1.TurneverythingOFF.

2.First,attachallcablestodevices.

3.Attachsignalcablestoconnectors.

4.Attachpowercordstooutlet.

5.TurndeviceON.

ToDisconnect

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

Disposeofthebatteryasrequiredbylocalordinancesorregulations.

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.

Chapter2.Safetyinformation7

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

1

2

CAUTION:
Usesafepracticeswhenlifting.

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

CAUTION:
Donotplaceanyobjectweighingmorethan82kg(180lbs.)ontopofrack-mounteddevices.

8IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter3.Generalinformation

Thischapterprovidesgeneralinformationthatappliestoallmachinetypessupportedbythispublication.

Specications

Thissectionliststhephysicalspecicationsforyourcomputer.

Thissectionliststhephysicalspecicationsforyourcomputer.

TypeIdeaCentreK450

Thissectionliststhephysicalspecications.

Environment

Airtemperature:

Operating:10°to35°C

Transit:-20°to55°C

Humidity:

Operating:35%to80%

Transit:20%to90%(40°C)

Altitude:86KPato106KPa

Electricalinput:

Inputvoltage:90V-264V(AC)

Inputfrequency:47Hz-63Hz

©CopyrightLenovo2013

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10IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter4.GeneralCheckout

Attention:Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartup

sequencechanged.Beextremelycarefulduringwriteoperationssuchascopying,saving,orformatting.
Dataorprogramscanbeoverwrittenifyouselectanincorrectdrive.

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

Usethefollowingproceduretohelpdeterminethecauseoftheproblem:

1.Power-offthecomputerandallexternaldevices.

2.Checkallcablesandpowercords.

3.Setalldisplaycontrolstothemiddleposition.

4.Power-onallexternaldevices.

5.Power-onthecomputer.

•Lookfordisplayederrorcodes

•Lookforreadableinstructionsoramainmenuonthedisplay.

Ifyoudidnotreceivethecorrectresponse,proceedtostep6.

Ifyoudoreceivethecorrectresponse,proceedtostep7.

6.Lookatthefollowingconditionsandfollowtheinstructions:

•IfthecomputerdisplaysaPOSTerror,goto“POSTerrorcodes”.

•Ifthecomputerhangsandnoerrorisdisplayed,continueatstep7.

7.Iftheteststopsandyoucannotcontinue,replacethelastdevicetested.

©CopyrightLenovo2013

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12IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter5.UsingtheSetupUtility

TheSetupUtilityprogramisusedtoviewandchangethecongurationsettingsofyourcomputer,regardless
ofwhichoperatingsystemyouareusing.However,theoperating-systemsettingsmightoverrideanysimilar
settingsintheSetupUtilityprogram.

StartingtheLenovoBIOSSetupUtilityprogram

TostarttheLenovoBIOSSetupUtilityprogram,dothefollowing:

1.Ifyourcomputerisalreadyonwhenyoustartthisprocedure,shutdowntheoperatingsystemand
turnoffthecomputer.

2.PressandholdtheF1keythenturnonthecomputer.WhentheLenovoBIOSSetupUtilityprogramis
displayed,releasetheF1key.

Note:IfaPower-OnPasswordoranAdministratorPasswordhasbeenset,theSetupUtilityprogrammenu
isnotdisplayeduntilyoutypeyourpassword.Formoreinformation,see“Usingpasswords.”

Viewingandchangingsettings

SystemcongurationoptionsarelistedintheLenovoBIOSSetupUtilityprogrammenu.T ovieworchange
settings,see“StartingtheSetupUtilityprogram.”

YoumustusethekeyboardwhenusingtheLenovoBIOSSetupUtilitymenu.Thekeysusedtoperform
varioustasksaredisplayedonthebottomofeachscreen.

Usingpasswords

YoucanusetheLenovoBIOSSetupUtilityprogramtosetpasswordstopreventunauthorizedpersons
fromgainingaccesstoyourcomputeranddata.See“StartingtheSetupUtilityprogram.”Thefollowing
typesofpasswordsareavailable:

•AdministratorPassword

•Power-OnPassword

Youdonothavetosetanypasswordstouseyourcomputer.However,ifyoudecidetosetpasswords,read
thefollowingsections.

Passwordconsiderations

Apasswordcanbeanycombinationoflettersandnumbersupto16character(a-z,and0-9).Forsecurity
reasons,itisagoodideatouseastrongpasswordthatcannotbeeasilycompromised.Wesuggestthat
passwordsshouldfollowtheserules:

•Strongpasswordscontain7-16characters,combinelettersandnumbers.

•Donotuseyournameoryourusername.

•Donotuseacommonwordoracommonname.

•Besignicantlydifferentfromyourpreviouspassword.

Attention:AdministratorandPower-Onpasswordsarenotcasesensitive

©CopyrightLenovo2013

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AdministratorPassword

SettinganAdministratorPassworddetersunauthorizedpersonsfromchangingcongurationsettings.Y ou
mightwanttosetanAdministratorPasswordifyouareresponsibleformaintainingthesettingsofseveral
computers.

AfteryousetanAdministratorPassword,apasswordpromptisdisplayedeverytimeyouaccesstheLenovo
BIOSSetupUtilityprogram.

IfboththeAdministratorandPower-OnPasswordareset,youcantypeeitherpassword.However,youmust
useyourAdministratorPasswordtochangeanycongurationsettings.

Setting,changing,ordeletinganAdministratorpassword

TosetanAdministratorPassword,dothefollowing:

Note:Apasswordcanbeanycombinationoflettersandnumbersupto16character(a-z,and0-9).For
moreinformation,see“Passwordconsiderations”onpage13.

1.StarttheLenovoBIOSSetupUtilityprogram(see“StartingtheLenovoBIOSSetupUtilityprogram”on
page13).

2.FromtheSecuritymenu,selectSetAdministratorPasswordandpresstheEnterkey.

3.Thepassworddialogboxwillbedisplayed.T ypethepasswordthenpresstheEnterkey.

4.Re-typethepasswordtoconrm,thenpresstheEnterkey.Ifyoutypethepasswordcorrectly,the
passwordwillbeinstalled.

TochangeanAdministratorPassword,dothefollowing:

1.StarttheLenovoBIOSSetupUtilityprogram(see“StartingtheLenovoBIOSSetupUtilityprogram”on
page13).

2.FromtheSecuritymenu,selectSetAdministratorPasswordandpresstheEnterkey.

3.Thepassworddialogboxwillbedisplayed.T ypethecurrentpasswordthenpressEnterkey.

4.T ypethenewpassword,thenpressEnterkey.Re-typethepasswordtoconrmthenewpassword,if
youtypethenewpasswordcorrectly,thenewpasswordwillbeinstalled.ASetupNoticewilldisplay
thatchangeshavebeensaved.

TodeleteapreviouslysetAdministratorPassword,dothefollowing:

1.FromtheSecuritymenu,selectSetAdministratorPasswordandpresstheEnterkey.

2.Thepassworddialogboxwillbedisplayed.T ypethecurrentpasswordandpresstheEnterkey.

3.T odeleteanAdministratorPassword,Enterblankeldsforeachnewpasswordlineitem.Asetup
noticewilldisplaythatchangeshavebeensaved.

4.ReturntotheLenovoBIOSSetupUtilityprogrammenuandselecttheExitoption.

5.SelectSavechangesandExitfromthemenu.

Power-OnPassword

WhenaPower-OnPasswordisset,youcannotstarttheLenovoBIOSSetupUtilityprogramuntilavalid
passwordistypedfromthekeyboard.

Setting,changing,ordeletingaPower-OnPassword

Note:Apasswordcanbeanycombinationoflettersandnumbersupto16character(a-z,and0-9).

14IdeaCentreK4SeriesHardwareMaintenanceManual

TosetaPower-OnPassword,dothefollowing:

1.StarttheLenovoBIOSSetupUtilityprogram(See”StartingtheLenovoBIOSSetupUtilityprogram”on
page13.)

2.FromtheSecuritymenu,selectSetPower-OnPasswordandpresstheEnterkey.

3.Thepassworddialogboxwillbedisplayed.T ypethepassword,andpresstheEnterkey.

4.Re-typethepasswordtoconrm,ifyoutypethepasswordcorrectly,thepasswordwillbeinstalled.

TochangeaPower-OnPassword,dothefollowing:

1.StarttheLenovoBIOSSetupUtilityprogram(See”StartingtheLenovoBIOSSetupUtilityprogram”on
page13.)

2.FromtheSecuritymenu,selectSetPower-OnPasswordandpresstheEnterkey.

3.Thepassworddialogboxwillbedisplayed.T ypethecurrentpasswordthenpresstheEnterkey.

4.T ypethenewpassword,thenpresstheEnterkey.Re-typethepasswordtoconrmthenewpassword,
ifyoutypethenewpasswordcorrectly,thenewpasswordwillbeinstalled.Asetupnoticewilldisplay
thatchangeshavebeensaved.

TodeleteapreviouslysetPower-OnPassword,dothefollowing:

1.FromtheSecuritymenu,selectSetPower-OnPasswordandpresstheEnterkey.

2.Thepassworddialogboxwillbedisplayed.T ypethecurrentpasswordandpresstheEnterkey.

3.T odeletethePower-OnPassword,Enterblankeldsforeachnewpasswordlineitem.Asetup
noticewilldisplaythatchangeshavebeensaved.

4.ReturntotheLenovoBIOSSetupUtilityprogrammenuandselecttheExitoption.

5.SelectSavechangesandExitfromthemenu.

Enablingordisablingadevice

TheDevicesoptionsisusedtoenableordisableuseraccesstothefollowingdevices:

USBFunctionsSelectwhethertoenableordisableUSB(UniversalSerial

Bus)functions.Ifthefunctionsaredisabled,noUSB
devicescanbeused.

ATADriveSetupSelectIDEorACHImode.Devicedriversupportis

requiredforACHImode.Dependingonhowtheharddisk
imagewasinstalled,changingthissettingmayprevent
thesystemfrombooting.

OnboardAudioControllerSelectwhethertoenableordisabletheOnboardAudio

Controller,whenfeatureissettoDisabledalldevices

connectedtotheaudioconnectors(e.g.aheadphoneor
amicrophone)aredisabledandcan’tbeused.

OnboardEthernetControllerorBootAgentSelectwhethertoenableordisableOnboardEthernet

Controller,orselectwhethertoenableordisableload
onboardPXE(PrebootExecutionEnvironment),or
SMC(SecureManagedClient).Thisfeaturewillallow

thecomputertobootfromaserverimage.

Toenableordisableadevice,dothefollowing:

1.StarttheSetupUtilityprogram(see“StartingtheSetupUtilityprogram”onpage13).

2.FromtheSetupUtilityprogrammenu,selectDevices.

3.Select:

Chapter5.UsingtheSetupUtility15

USBSetuppresstheEnterkey,andthenselectUSBFunctions.

ATADeviceSetuppresstheEnterkey.SelectCongureSATAas,presstheEnterkeyandthen

selectSA T Amode.

AudioSetuppresstheEnterkey,andthenselectOnboardAudioController.

NetworkSetuppresstheEnterkey,thenselectOnboardEthernetSupportorBootAgent.

4.SelectDisabledorEnabledandpresstheEnterkey.

5.ReturntotheLenovoBIOSSetupUtilityprogrammenuandselecttheExitoption.

6.SelectSavechangesandExitfromthemenu.

Note:Ifyoudonotwanttosavethesettings,selectDiscardchangesandExitfromthemenu.

Selectingastartupdevice

IfyourcomputerdoesnotbootfromadevicesuchastheCD/DVD-ROMdrivediskorharddiskasexpected,
followoneoftheproceduresbelow.

Selectingatemporarystartupdevice

Usethisproceduretostartupfromanybootdevice.

Note:NotallCDs,DVDsorharddiskdrivesarebootable.

1.T urnoffyourcomputer.

2.PressandholdtheF12keythenturnonthecomputer.WhentheStartupDeviceMenuappears,
releasetheF12key.

Note:IftheStartupDeviceMenudoesnotdisplayusingthesesteps,repeatedlypressandreleasethe
F12keyratherthankeepingitpressedwhenturningonthecomputer.

3.Use↑and↓arrowstoselectthedesiredstartupdevicefromtheStartupDeviceMenuandpress
theEnterkeytobegin.

Note:SelectingastartupdevicefromtheStartupDeviceMenudoesnotpermanentlychangethe
startupsequence.

Selectingorchangingthestartupdevicesequence

Tovieworpermanentlychangetheconguredstartupdevicesequence,dothefollowing:

1.StarttheLenovoBIOSSetupUtilityprogram(see“StartingtheLenovoBIOSSetupUtilityprogram”on
page13).

2.FromtheLenovoBIOSSetupUtilityprogrammainmenu,selecttheStartupoption.

3.PresstheEnterkey,andselectthedevicesforthePrimaryBootSequence.Readtheinformation
displayedontherightsideofthescreen.

4.Use↑and↓arrowstoselectadevice.Usethe<+>or<->keystomoveadeviceupordown.Usethe

<×>keytoexcludethedevicefromorincludethedeviceinthebootsequence.

5.ReturntotheLenovoBIOSSetupUtilityprogrammenuandselecttheExitoption.

6.SelectSavechangesandExitfromthemenu.

Notes:

a.Ifyoudonotwanttosavethesettings,selectDiscardchangesandExitfromthemenu.

16IdeaCentreK4SeriesHardwareMaintenanceManual

b.Ifyouhavechangedthesesettingsandwanttoreturntothedefaultsettings,selectLoadOptimal

Defaultsfromthemenu.

ExitingtheLenovoBIOSSetupUtilityprogram

Afteryounishviewingorchangingsettings,presstheEsckeytoreturntotheLenovoBIOSSetupUtility
programmainmenu.Y oumighthavetopresstheEsckeyseveraltimes.Dooneofthefollowing:

•Ifyouwanttosavethenewsettings,selectSavechangesandExitfromthemenu.WhentheSave&
resetwindowshows,selecttheYesbutton,andthenpresstheEnterkeytoexittheLenovoBIOS
SetupUtilityprogram.

•Ifyoudonotwanttosavethesettings,selectDiscardchangesandExitfromthemenu.Whenthe
ResetWithoutSavingwindowshows,selecttheYesbutton,andthenpresstheEnterkeytoexitthe
SetupUtilityprogram.

Chapter5.UsingtheSetupUtility17

18IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter6.Symptom-to-FRUIndex

TheSymptom-to-FRUindexlistserrorsymptomsandpossiblecauses.Themostlikelycauseislistedrst.
AlwaysbeginwithChapter4,“GeneralCheckout,”onpage11.Thisindexcanalsobeusedtohelpyou
decidewhichFRUstohaveavailablewhenservicingacomputer.Ifyouareunabletocorrecttheproblem
usingthisindex,goto“Undeterminedproblems”onpage20.

Notes:

•Ifyouhavebothanerrormessageandanincorrectaudioresponse,diagnosetheerrormessagerst.

•Ifyoucannotrunthediagnostictestsoryougetadiagnosticerrorcodewhenrunningatestbutdid
receiveaPOSTerrormessage,diagnosethePOSTerrormessagerst.

•Ifyoudidnotreceiveanyerrormessagelookforadescriptionofyourerrorsymptomsintherstpartof
thisindex.

Harddiskdrivebooterror

Aharddiskdrivebooterrorcanhavethefollowingcauses.

Error

Thestartupdriveisnotincludedinthebootsequence
inconguration.

Nooperatingsysteminstalledonthebootdrive.Installanoperatingsystemonthebootdrive.

Thebootsectoronthestartupdriveiscorrupted.

Thedriveisdefective.

FRU/Action

Checkthecongurationandensurethestartupdriveis
inthebootsequence.

Thedrivemustbeformatted.Dothefollowing:

1.Attempttoback-upthedataonthefailingharddisk
drive.

2.Usetheoperatingsystemtoformattheharddisk
drive.

Replacetheharddiskdrive.

PowerSupplyProblems

Followtheseproceduresifyoususpectthereisapowersupplyproblem.

Check/VerifyFRU/Action

Checkthatthefollowingareproperlyinstalled:

•PowerCord

•On/OffSwitchconnector

•SystemBoardPowerSupplyconnectors

•Microprocessor(s)connection

Checkthepowercord.PowerCord

Checkthepower-onswitch.Power-onSwitch

Reseatconnectors

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POSTerrorcodes

Eachtimeyouturnthecomputeron,itperformsaseriesofteststocheckthatthesystemisoperating
correctlyandthatcertainoptionsareset.ThisseriesoftestsiscalledthePower-OnSelf-T est,orPOST.
POSTdoesthefollowing:

•Checkssomebasicsystem-boardoperations

•Checksthatthememoryisworkingcorrectly

•Startsvideooperations

•Veriesthatthebootdriveisworking

POSTErrorMessageDescription/Action

Keyboarderror

RebootandSelectproperBootdeviceorInsertBoot
MediainselectedBootdevice

Cannotinitializethekeyboard.Makesurethekeyboard
isproperlyconnectedtothecomputerandthatnokeys
areheldpressedduringPOST.Topurposelycongure
thecomputerwithoutakeyboard,selectKeyboardless
operationinStartupoptiontoEnabled.TheBIOSthen
ignoresthemissingkeyboardduringPOST.

TheBIOSwasunabletondasuitablebootdevice.Make
surethebootdriveisproperlyconnectedtothecomputer.
Makesureyouhavebootablemediainthebootdevice.

Undeterminedproblems

1.Power-offthecomputer.

2.Removeordisconnectthefollowingcomponents(ifconnectedorinstalled)oneatatime.

a.Externaldevices(modem,printer,ormouse)

b.Extendedvideomemory

c.ExternalCache

d.ExternalCacheRAM

e.Harddiskdrive

f.Diskdrive

3.Power-onthecomputertore-testthesystem.

4.Repeatsteps1through3untilyoundthefailingdeviceorcomponent.

Ifalldevicesandcomponentshavebeenremovedandtheproblemcontinues,replacethesystemboard.

20IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter7.Locations

1 2

3

5

4

6

Thissectionprovidesillustrationstohelplocatethevariousconnectors,controlsandcomponentsofthe
computer.

Identifyinginternalcomponents

Thefollowingillustrationshowsthecomponentsinsideyourcomputer.

1Opticaldiskdrive

2Harddiskdrive

3Graphicscard

4Memorymodules

5Systemfan

6Powersupply

Identifyingpartsonthesystemboard

Thesystemboard(alsoknownasthe“mainboard”or“motherboard”)isthemaincircuitboardinyour
computer.Itprovidesbasiccomputerfunctionsandsupportsavarietyofdevicesthatarefactory-installed
orthatyoucaninstalllater.

Thefollowingillustrationsshowthelocationsofthedifferentpartsonthesystemboard.

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IdeaCentreK450

Leno vo K45 0

1 2 3 4

7

6

8

9

5

15161718 14

10
11

2122 20 19

12

13

2324252627

112Vpowerconnector15Frontpanelconnector

2Microprocessorandheatsink

3Microprocessorfanheader

4Memoryslots(4)18ClearCMOSjumper

5Thermalsensorheader

6MiniPCI-Eslot

7Powerconnector

8FrontUSBslot

9PCIexpressX16adapterslot23LPCdebugconnector

10SPIdebugconnector24ClearCMOSjumper

11Solidstatediskpowerconnector

12SATAconnectors(4)26PCIexpressX1adapterslots(3)

13eSATAconnector27Systemfanheader

14Powerfanheader

16FrontUSB2.0connector

17Battery

19FrontUSB3.0connector

20Modeswitchconnector

21Serial(COM2)connector

22MEdisablejumper

25Frontaudioconnector

22IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter8.Replacinghardware

Attention:Donotremovethecomputercoverorattemptanyrepairbeforereadingthe“Importantsafety

information”intheSafetyandWarrantyGuidethatwasincludedwithyourcomputer.Toobtaincopiesofthe
SafetyandWarrantyGuide,gototheSupportWebsiteat:
http://consumersupport.lenovo.com

Generalinformation

Pre-disassemblyinstructions

Beforeproceedingwiththedisassemblyprocedure,makesurethatyoudothefollowing:

1.T urnoffthepowertothesystemandallperipherals.

2.Unplugallpowerandsignalcablesfromthecomputer.

3.Placethesystemonaat,stablesurface.

Generalinformation

Pre-disassemblyinstructions

Beforeproceedingwiththedisassemblyprocedure,makesurethatyoudothefollowing:

1.T urnoffthepowertothesystemandallperipherals.

2.Unplugallpowerandsignalcablesfromthecomputer.

3.Placethesystemonaat,stablesurface.

©CopyrightLenovo2013

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Replacingthekeyboardandmouse

Note:Y ourkeyboardwillbeconnectedtoaUSBconnectorateitherfrontorattherearofthecomputer.

Toreplacethekeyboard:

Step1.Removeanymedia(disks,CDs,ormemorycards)fromthedrives,shutdownthecomputer,and

turnoffallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

Step3.Locatetheconnectorforthekeyboard.Referto“Frontviewofthechassis”and“Rearviewofthe

chassis”.

Step4.Disconnectthedefectivekeyboardcablefromthecomputerandconnectthenewkeyboardcable

tothesameconnector.

Step5.Themousecanbereplacedusingthesamemethod.

Removingthecomputercover

Attention:

•T urnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

•Forthisprocedure,ithelpstolaythecomputeronaat,stablesurface.

Toremovethecomputercover:

Step1.Removeanymedia(disks,CDs,ormemorycards)fromthedrives,shutdownthecomputer,and

turnoffallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)

cables,andanyothercablesthatareconnectedtothecomputer.Referto“Locatingconnectors
ontherearofthecomputer”.

Step4.Removethetwoscrewsthatsecurethecomputercoverattherearofthechassis.

24IdeaCentreK4SeriesHardwareMaintenanceManual

Step5.Slidethecomputercoverouttoremoveit.

Step6.Toreinstallthecomputercover:

a.Lineupthecomputercoverwiththechassisthenslideitback.

b.Securethecomputercovertothechassiswiththescrews.

Removingthefrontbezel

Note:Forthisprocedure,ithelpstolaythecomputerat.

Toremovethefrontbezel:

Step1.Removethecomputercover.Referto“Removingthecomputercover”.

Chapter8.Replacinghardware25

Step2.Removethefrontbezelbyreleasingthethreeplastictabsinsidethechassisandslidingthebezel

outasshown.

Step3.Toreattachthebezel,aligntheplastictabsonthebottomofthebezelwiththecorrespondingholes

inthechassis,andthensnapitintoposition.

Replacingamemorymodule

Note:Forthisprocedure,ithelpstolaythecomputerat.

Toreplaceamemorymodule:

Step1.Removethecomputercover.Referto“Removingthecomputercover”.

Step2.Locatethememorymoduleconnectors.Referto“Locatingcomponents”.

Step3.Removethememorymoduletobereplacedbyopeningtheretainingclipsasshown.

26IdeaCentreK4SeriesHardwareMaintenanceManual

Step4.Positionthenewmemorymoduleoverthememoryconnector.Makesurethatthenotch1onthe

1

2

memorymodulealignscorrectlywiththeconnectorkey2onthesystemboard.Pushthememory
modulestraightdownintotheconnectoruntiltheretainingclipsclose.

Step5.Reattachthecomputercover.

Replacingaharddiskdrive

Note:Forthisprocedure,ithelpstolaythecomputerat.

Toreplaceaharddiskdrive:

Step1.Removethecomputercover.Referto“Removingthecomputercover”.

Step2.Disconnectthedataandpowercablesfromtheharddiskdrive.

Step3.Liftuptheplastichandleandslidetheharddiskdriveoutofthedrivebay.12

Chapter8.Replacinghardware27

Step4.Removetheharddiskdrivefromtheplasticbracketasshown.

1

2

3

Step5.Lineupthenewharddiskdrivewiththeplasticbracketandsnapitintoposition.

Step6.Slidethenewharddiskdriveintothedrivebayandslidethedrivebayintoplace.

Step7.Connectthepowerandsignalcablestothenewharddiskdrive.

Step8.Reattachthecomputercover.

Replacinganopticaldrive

Note:Forthisprocedure,ithelpstolaythecomputerat.

Toreplaceanopticaldrive:

Step1.Removethecomputercover.Referto“Removingthecomputercover”.

Step2.Removethefrontbezel.Referto“Removingthefrontbezel”.

Step3.Disconnectthedataandpowercablesfromtherearoftheopticaldrive.1

Step4.Pressthereleasebuttonandpushtheopticaldrivestraightoutofthefrontofthechassis.23

Step5.Slidethenewopticaldriveintothebayfromthefrontuntilitsnapsintoposition.

Step6.Connectthedataandpowercablestothenewdiskdrive.

Step7.Reattachthefrontbezelandcomputercover.

28IdeaCentreK4SeriesHardwareMaintenanceManual

Replacingagraphicscard

Note:Forthisprocedure,ithelpstolaythecomputerat.

Toreplaceagraphicscard:

Step1.Removethecomputercover.Referto“Removingthecomputercover”.

Step2.Followthebelowstepstoremoveagraphicscard:

IfyourcomputerhasaDuo-graphicscardsinstalled,followthestepsbelowtoreplaceit:

a.RemovethescrewthatsecurestheDuo-graphicscardsxingbracketandliftthebracketup.

Chapter8.Replacinghardware29

b.Removethescrewthatsecuresthegraphicscardlatchtothechassis,openit,andremove

1

2

3

4

theDuo-graphicscardsconnector.

c.Removethegraphicscardbypullingitstraightoutoftheconnector.

Ifyourcomputerhasasinglegraphicscardinstalled,followthestepsbelowtoreplaceit:

30IdeaCentreK4SeriesHardwareMaintenanceManual

a.Removethescrewthatsecuresthegraphicslatchtothechassisandopenit.

1

2

3

b.Removethegraphicscardbypullingitstraightoutoftheconnector.

Step3.Installthenewadapterintothesameadapterconnector.

Step4.Turnthegraphicscardlatchtotheclosedpositionandsecureitwiththescrew.

Step5.ConnectthetwographicscardswiththeDuo-graphicscardsconnectorandreattachthe

Duo-graphicscardsxingbrackettothechassis.(FormodelswithDuo-graphicscardsonly)

Step6.Reattachthecomputercover.

ReplacingtheTV-T unercard

Note:Forthisprocedure,ithelpstolaythecomputeronaat,stablesurface.

Chapter8.Replacinghardware31

ToreplacetheTV-Tunercard:

1

2

3

Step1.Removethecomputercover.Referto“Removingthecomputercover”.

Step2.Removethescrewthatsecuresthegraphicscardlatchtothechassisandopenit.123

Step3.RemovetheTV-Tunercardbypullingitstraightoutoftheconnector.

Step4.InstallthenewTV-tunerintothesameconnector.

Step5.Turnthegraphicscardlatchtotheclosedpositionandsecureitwiththescrew.

32IdeaCentreK4SeriesHardwareMaintenanceManual

Step6.Reattachthecomputercover.

2

3

4

1

ReplacingthePowersupply

Note:Forthisprocedure,ithelpstolaythecomputerat.

ToreplacethePowersupply:

Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)

cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.

Step4.Removethecomputercover.Referto“Removingthecomputercover”.

Step5.Disconnectthepowercablesfromtheconnectorsonmotherboard.1

Step6.Removethe4screwsthatsecurethePowersupplytothechassis.2

Step7.SlidethenliftthePowersupplyoutofchassis.34

Step8.Installthenewpowersupply：

a.Lineuptheholesonthenewpowersupplywithmountingholesontherearofthechassisand

secureittothechassiswiththe4screws.

b.Connectthepowercablestotheconnectorsonthemotherboard.

Step9.Reattachthecomputercover.

Replacingthemicroprocessorfan

Toreplacethemicroprocessorfan:

Chapter8.Replacinghardware33

Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)

cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.

Step4.Removethecomputercover.Referto“Removingthecomputercover”.

Step5.Disconnectthefanpowercablefromtheconnectoronthemotherboard.

Step6.Removethe4screwsthatsecurethemicroprocessorfantotheheat-sinkandliftupthe

microprocessorfantoremoveit.

Step7.Toinstallthenewmicroprocessorfan:

a.Lineupthenewmicroprocessorfanwiththeheat-sinkandsecureittotheheat-sinkwith

4screws.

b.Connectthemicroprocessorfanpowercabletotheconnectorontheboard.

Step8.Reattachthecomputercover.

Replacingtheheat-sink

Note:Forthisprocedure,ithelpstolaythecomputerat.

Toreplacetheheat-sink:

Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

34IdeaCentreK4SeriesHardwareMaintenanceManual

Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)

cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.

Step4.Removethecomputercover.Referto“Removingthecomputercover”.

Step5.Removethemicroprocessorfan.Referto“Replacingthemicroprocessorfan”.

Step6.Removethe4screwsthatsecuretheheat-sinktothemotherboard.

Step7.Liftuptheheat-sinktoremoveit.

Step8.Installthenewheat-sink：

a.Lineupthescrewsonthenewheat-sinkwithmountingholesonthemotherboardandsecure

itwiththe4screws.

b.Reattachthemicroprocessorfantotheheat-sink.

c.Reconnectthemicroprocessorfanpowercabletotheconnectoronthemotherboard.

Step9.Reattachthecomputercover.

ReplacingtheCPU

Note:Forthisprocedure,ithelpstolaythecomputerat.

ToreplacetheCPU:

Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)

cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.

Chapter8.Replacinghardware35

Step4.Removethecomputercover.Referto“Removingthecomputercover”.

Step5.Removethemicroprocessorfan.Referto“Replacingthemicroprocessorfan”.

Step6.Removetheheat-sink.Referto“Replacingtheheat-sink”.

Step7.Toremovethemicroprocessor3fromthesystemboard,pressthenslidethesmallhandleout

tospringitup.1andopentheretainer.2

Attention:Donottouchthegoldcontactsonthebottomofthemicroprocessor.Whenhandingthe
microprocessor,touchonlythesides.

Note:Donotdropanythingontothemicroprocessorsocketwhileitisexposed.Thesocketpinsmust
bekeptascleanaspossible.

36IdeaCentreK4SeriesHardwareMaintenanceManual

Step8.Holdingthesidesofthemicroprocessorwithyourngers,removetheprotectivecover1that

protectsthegoldcontactsonthenewmicroprocessor.2

Step9.Holdingthesidesofthemicroprocessorwithyourngers,positionthemicroprocessorsothatthe

notchesonthemicroprocessorarealignedwiththetabsinthemicroprocessorsocket.

Important:Toavoiddamagingthemicroprocessorcontacts,keepthemicroprocessorcompletelylevel
whileinstallingitintothesocket.

Step10.Lowerthemicroprocessorstraightdownintoitssocketonthemotherboard.

Step11.T osecurethemicroprocessorinthesocket,closethemicroprocessorretainerandlockitinto

positionwiththesmallhandle.

Step12.Useathermalgreasesyringetoplace5dropsofgreaseonthetopofthemicroprocessor.Each

dropofgreaseshouldbe0.03ml(3tickmarksonthegreasesyringe).

Step13.Reattachtheheat-sink,microprocessorfan,computercover.

ReplacingtheWi-Ficard

Note:Forthisprocedure,ithelpstolaythecomputerat.

Chapter8.Replacinghardware37

ToreplacetheWi-Ficard:

Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)

cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.

Step4.Removethecomputercover.Referto“Removingthecomputercover”.

Step5.Disconnectthe2antennacablesfromtheWi-Ficard.

Step6.Removethe2screwsthatsecuretheWi-Ficardtothemotherboard.

Step7.PulltheWi-Ficardupwardtoremoveitfromthecardport.

Step8.InstallthenewWi-Ficard:

a.LineupthenewWi-Ficard,theninsertitintothesamecardport.

b.SecuretheWi-Ficardtothemotherboardwiththe2screws.

c.Connectthe2antennacablestothenewWi-Ficard.

Step9.Reattachthecomputercover.

Replacingthemotherboard

Note:Forthisprocedure,ithelpstolaythecomputerat.

Toreplacethemotherboard:

Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating

system,andturnoffthecomputerandallattacheddevices.

38IdeaCentreK4SeriesHardwareMaintenanceManual

Step2.Unplugallpowercordsfromelectricaloutlets.

Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)

cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.

Step4.Removethecomputercover.Referto“Removingthecomputercover”.

Step5.Removethememorymodule.Referto“Replacingamemorymodule”.

Step6.Removethemicroprocessorfan.Referto“Replacingthemicroprocessorfan”.

Step7.Removetheheat-sink.Referto“Replacingtheheat-sink”.

Step8.Removethegraphiccard.Referto“Replacingthegraphiccard”.

Step9.RemovetheTV-Tunercard.Referto“ReplacingtheTV-T unercard”.

Step10.RemovetheWi-Ficard.Referto“ReplacingtheWi-Ficard”.

Step11.RemovetheCPU.Referto“ReplacingtheCPU”.

Step12.Disconnecttheallcablesfromtheconnectorsonmotherboard.

Step13.Removethe8screwsthatsecurethemotherboardtothechassis.

Step14.Slidethenliftthemotherboardoutofthechassistoremoveit.

Step15.Installthenewmotherboard:

a.Lineuptheholesonthenewmotherboardwithmountingholesonthechassisandsecure

itwithscrews.

b.Reattachthememorymodule,Wi-Ficard,CPU,andtheheat-sinktothenewmotherboard.

c.Connecttheallcablestothenewmotherboard.

d.AttachthegraphiccardandTV- T unercardtothenewmotherboard.

Step16.Reattachthecomputercover.

Chapter8.Replacinghardware39

40IdeaCentreK4SeriesHardwareMaintenanceManual

Chapter9.Generalinformation

Thischapterprovidesgeneralinformationthatappliestoallmachinetypessupportedbythispublication.

AdditionalServiceInformation

Thischapterprovidesadditionalinformationthattheservicerepresentativemightndhelpful.

Powermanagement

Powermanagementreducesthepowerconsumptionofcertaincomponentsofthecomputersuchasthe
systempowersupply,processor,harddiskdrives,andsomemonitors.

Advancedcongurationandpowerinterface(ACPI)BIOS

AsthiscomputerhasanACPIBIOSsystem,theoperatingsystemisallowedtocontrolthepower
managementfeaturesofthecomputerandthesettingsforAdvancedPowerManagement(APM)BIOSmode
isignored.NotalloperatingsystemssupportACPIBIOSmode.

AutomaticPower-Onfeatures

TheAutomaticPower-OnfeatureswithinthePowerManagementmenuallowyoutoenableanddisable
featuresthatturnonthecomputerautomatically.

•WakeUponAlarm:Youcanspecifyadateandtimeatwhichthecomputerwillbeturnedonautomatically.
Thiscanbeeitherasingleevent,adailyeventoraweeklyevent.

•WakeUponLAN:ThisfeatureallowsLANadaptercardtowaketheSystem.

©CopyrightLenovo2013

41