Lenovo C445 User Manual

LenovoC345/C445All-In-OnePC

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HardwareMaintenanceManual

MachineTypes:10103/4751[C345],10105/6596[C445]

LenovoC345/C445All-In-OnePC
HardwareMaintenanceManual

MachineTypes:10103/4751[C345],10105/6596[C445]

ThirdEdition(December2012)28th

©CopyrightLenovo2012.

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

Chapter6.Symptom-to-FRUIndex..19

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

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

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

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

Chapter8.Replacinghardware....27

Generalinformation.............27

Replacingthekeyboardandmouse......28

Replacingtheadapter............28

Removingthestandbase..........30

Removingthefootcover...........30

Replacingamemorymodule.........31

Replacingtheharddiskdrive.........33

Replacingtheopticaldrive..........34

Removingthestandholder..........36

Removingthemiddlecover.........37

Replacingtheconverterboard........38

Replacingthecamera............39

RemovingtheEMIcover...........40

ReplacingtherearI/Omodule........41

Replacingthespeakersystem........43

Replacingthesystemfan..........44

Replacingtheheat-sink...........45

ReplacingtheTVtunercard.........46

ReplacingtheWLANcard..........47

Replacingthefrontcontrolboard.......48

Replacingthepowerswitchboard.......49

Replacingthemotherboard..........50

ReplacingtheLEDpanel...........52

Chapter9.FRUlists..........55

Chapter10.Generalinformation...59

AdditionalServiceInformation........59

Chapter7.Locatingconnectors,

controlsandcomponents......21

©CopyrightLenovo2012

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ivLenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter1.Aboutthismanual

ThismanualcontainsserviceandreferenceinformationforLenovoC345andC445All-In-Onecomputers
listedonthecover.ItisintendedonlyfortrainedservicerswhoarefamiliarwithLenovocomputerproducts.

BeforeservicingaLenovoproduct,besuretoreadtheSafetyInformation.

ThedescriptionoftheTV-tunercardinthismanualappliesonlytocomputerswithaTV-tunercardinstalled.
ItdoesnotapplytocomputerswithoutaTV-tunercard.

ImportantSafetyInformation

BesuretoreadallCAUTIONandDANGERsectionsinthismanualbeforefollowinganyoftheinstructions.

VeuillezliretouteslesconsignesdetypeDANGERetATTENTIONduprésentdocumentavantd’exécuter
lesinstructions.

LesenSieunbedingtalleHinweisevomT yp“ACHTUNG”oder“VORSICHT”indieserDokumentation,bevor
SieirgendwelcheVorgängedurchführen

LeggereleistruzioniintrodottedaA TTENZIONEePERICOLOpresentinelmanualeprimadieseguireuna
qualsiasidelleistruzioni

Certique-sedelertodasasinstruçõesdecuidadoeperigonestemanualantesdeexecutarqualquer
umadasinstruções

Esimportantequeleatodaslasdeclaracionesdeprecauciónydepeligrodeestemanualantesdeseguir
lasinstrucciones.

©CopyrightLenovo2012

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2LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter2.Safetyinformation

Thischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.

Generalsafety

Followtheserulestoensuregeneralsafety:

•Keeptheareasaroundthecomputerclearandcleanduringandaftermaintenance.

•Whenliftinganyheavyobject:

1.Ensureyoucanstandsafelywithoutslipping.

2.Distributetheweightoftheobjectequallyacrossbothfeet.

3.Liftslowly.Nevermovesuddenlyortwistwhenyouattempttolift.

4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe
musclesinyourback.

Donotattempttoliftanyobjectsthatweighmorethan16kg(35lb)orobjectsthatyouthinkare
tooheavyforyou.

•Donotperformanyactionthatwouldcreateahazardforthecustomer,orwouldmakethecomputer
unsafe.

•Beforeyoustartthecomputer,ensurethatotherservicerepresentativesandcustomerpersonnelarenot
inapositionthatwouldcreateahazardforthem.

•Placeremovedcoversandotherpartsinasafeplace,awayfromallpersonnel,whileyouareservicingthe
computer.

•Keepyourtoolcaseawayfromareasthatpeoplemaywalkthroughtoensureno-onetripsoverit.

•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Ensurethatyoursleeves
arefastenedorrolledupaboveyourelbows.Ifyourhairislong,tieorfastenitback.

•Inserttheendsofyournecktieorscarfinsideclothingorfastenitwithanon-conductiveclip,
approximately8centimeters(3inches)fromtheend.

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

•Wearsafetyglasseswhenyouare:hammering,drillingsoldering,cuttingwire,attachingsprings,using
solvents,orworkinginanyotherconditionsthatmightbehazardoustoyoureyes.

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

•Reattachallcoverscorrectlybeforereturningthecomputertothecustomer.

Electricalsafety

CAUTION:
Electricalcurrentfrompower ,telephone,andcommunicationcablescanbehazardous.T oavoid
personalinjuryorequipmentdamage,disconnectanyattachedpowercords,telecommunication
cables,networkcables,andmodemcablesbeforeyouopenthecomputercovers,unlessinstructed
otherwiseintheinstallationandcongurationprocedures.

©CopyrightLenovo2012

3

Observethefollowingruleswhenworkingonelectricalequipment.

Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoft
materialthatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.Manycustomershaverubber
oormatsneartheirequipmentthatcontainsmallconductiveberstodecreaseelectrostaticdischarge.

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

•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.

•Disconnectallpowerbefore:

–Performingamechanicalinspection

–Workingnearpowersupplies

–RemovingorinstallingFieldReplaceableUnits(FRUs)

•Beforeyoustarttoworkonthecomputer,unplugthepowercord.Ifyoucannotunplugit,askthe
customertopower-offtheelectricaloutletthatsuppliespowertothemachineandtolocktheelectrical
outletintheoffposition.

•Ifyouneedtoworkonacomputerthathasexposedelectricalcircuits,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
thesafetysectionsofthemaintenanceinformation.Useextremecarewhenmeasuringhighvoltages.

•Regularlyinspectandmaintainyourelectricalhandtoolstoensuretheyaresafetouse.

•Donotusewornorbrokentoolsandtesters.

•Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkthatithasbeenpoweredoff.

•Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesofthesehazardsarewetoors,
non-groundedpowerextensioncables,conditionsthatmaycauseorallowpowersurges,andmissing
safetygrounds.

•Donottouchliveelectricalcircuitswiththereectivesurfaceofaplasticdentalmirror.Thissurfaceis
conductive,andtouchingalivecircuitcancausepersonalinjuryanddamagetothecomputer.

•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating
positionsinacomputer:

–Powersupplyunits

–Pumps

–Blowersandfans

–Motorgenerators

andsimilarunits.(Thispracticeensurescorrectgroundingoftheunits.)

•Ifanelectricalaccidentoccurs:

–Usecaution;donotbecomeavictimyourself.

4LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

–Switchoffpower.

–Sendanotherpersontogetmedicalaid.

Safetyinspectionguide

Theintentofthisinspectionguideistoassistyouinidentifyingpotentialhazardsposedbytheseproducts.
Eachcomputer,asitwasdesignedandbuilt,hadrequiredsafetyitemsinstalledtoprotectusersand
servicepersonnelfrominjury.Thisguideaddressesonlythoseitems.However,goodjudgmentshouldbe
usedtoidentifypotentialsafetyhazardsduetoattachmentoffeaturesoroptionsnotcoveredbythis
inspectionguide.

Ifanyhazardsarepresent,youmustdeterminehowserioustheapparenthazardcouldbeandwhetheryou
cancontinuewithoutrstresolvingtheproblem.

Considerthefollowingitemsandthesafetyhazardstheypresent:

•Electricalhazards,especiallyprimarypower(primaryvoltageontheframecancauseseriousorfatal
electricalshock).

•Explosivehazards,suchasadamagedCRTfaceorbulgingcapacitor

•Mechanicalhazards,suchaslooseormissinghardware

Theguideconsistsofaseriesofstepspresentedasachecklist.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.Checkinsidetheunitforanyobvioushazards,suchasmetallings,contamination,waterorother
liquids,orsignsofreorsmokedamage.

7.Checkforworn,frayed,orpinchedcables.

8.Checkthatthepower-supplycoverfasteners(screwsorrivets)havenotbeenremovedortamperedwith.

Handlingelectrostaticdischarge-sensitivedevices

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

Notes:

1.Useproduct-specicESDprocedureswhentheyexceedtherequirementsnotedhere.

2.MakesurethattheESDprotectivedevicesyouusehavebeencertied(ISO9000)asfullyeffective.

WhenhandlingESD-sensitiveparts:

Chapter2.Safetyinformation5

•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

TheCAUTIONandDANGERsafetynoticesinthissectionareprovidedinthelanguageofEnglish.

DANGER

Electricalcurrentfrompower,telephoneandcommunicationcablesishazardous.

Toavoidashockhazard:

•Donotconnectordisconnectanycablesorperforminstallation,maintenance,orreconguration
ofthisproductduringanelectricalstorm.

•Connectallpowercordstoaproperlywiredandgroundedelectricaloutlet.

•Connectanyequipmentthatwillbeattachedtothisproducttoaproperlywiredoutlet.

•Whenpossible,useonehandonlytoconnectordisconnectsignalcables.

•Neverturnonanyequipmentwhenthereisevidenceofre,water,orstructuraldamage.

•Disconnecttheattachedpowercords,telecommunicationscables,networkcables,andmodem

cablesbeforeyouopenthedevicecovers,unlessinstructedotherwiseintheinstallationand
congurationprocedures.

•Connectanddisconnectcablesasdescribedinthefollowingtablewheninstalling,moving,or
openingcoversonthisproductorattacheddevices.

6LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

ToConnect

1.TurneverythingOFF .

2.First,attachallcablestodevices.

3.Attachsignalcablestoconnectors.

4.Attachpowercordstooutlet.

5.TurndeviceON.

ToDisconnect

1.TurneverythingOFF .

2.First,removepowercordsfromoutlets.

3.Removesignalcablesfromconnectors.

4.Removeallcablesfromdevices.

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

Donot:

•Throwintoorimmerseinwater

•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:

Thesediodesemitradiationwhenopen.Donotstareintothebeam,donotviewdirectlywith
opticalinstruments,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.

8LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter3.Generalinformation

Thischapterprovidesgeneralinformationthatappliestoallcomputermodelscoveredbythismanual.

Specications

Thissectionliststhephysicalspecicationsforyourcomputer.

Thissectionliststhephysicalspecicationsforyourcomputer.

TypeLenovoC345/C445

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

©CopyrightLenovo2012

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10LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter4.GeneralCheckout

Attention:Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartup

sequencemayhavebeenchanged.Beextremelycarefulduringwriteoperationssuchascopying,saving,or
formatting.Dataorprogramscanbeoverwrittenifyouselectanincorrectdrive.

Generalerrormessagesappearifaproblemorconictisfoundbyanapplication,theoperatingsystem,or
both.Foranexplanationofthesemessages,refertotheinformationsuppliedwiththatsoftwarepackage.

Usethefollowingproceduretohelpdeterminethecauseoftheproblem:

1.Power-offthecomputerandallexternaldevices.

2.Checkallcablesandpowercords.

3.Setalldisplaycontrolstothemiddleposition.

4.Power-onallexternaldevices.

5.Power-onthecomputer.

•Lookfordisplayederrorcodes.

•Lookforreadableinstructionsoramainmenuonthedisplay.

Ifyoudidnotreceivethecorrectresponse,proceedtostep6.

Ifyoudidreceivethecorrectresponse,proceedtostep7.

6.Ifoneofthefollowinghappens,followtheinstructiongiven:

•IfthecomputerdisplaysaPOSTerror,goto“POSTerrorcodes” .

•Ifthecomputerhangsandnoerrorisdisplayed,continueatstep7.

7.Iftheteststopsandyoucannotcontinue,replacethelastdevicetested.

©CopyrightLenovo2012

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12LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter5.UsingtheSetupUtility

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

StartingtheLenovoBIOSSetupUtilityprogram

TostarttheLenovoBIOSSetupUtilityprogram,dothefollowing:

1.Ifyourcomputerisalreadyonwhenyoustartthisprocedure,shutdowntheoperatingsystemand
turnoffthecomputer.

2.PressandholdtheF1keythenturnonthecomputer.WhentheLenovoBIOSSetupUtilityprogramis
displayed,releasetheF1key.

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

Viewingandchangingsettings

SystemcongurationoptionsarelistedintheLenovoBIOSSetupUtilityprogrammenu.Tovieworchange
settings,see“StartingtheSetupUtilityprogram. ”

YoumustusethekeyboardwhenusingtheLenovoBIOSSetupUtilitymenu.Thekeysusedtoperform
varioustasksaredisplayedonthebottomofeachscreen.

Usingpasswords

YoucanusetheLenovoBIOSSetupUtilityprogramtosetpasswordstopreventunauthorizedpersons
fromgainingaccesstoyourcomputeranddata.See“StartingtheSetupUtilityprogram.”Thefollowing
typesofpasswordsareavailable:

•AdministratorPassword

•Power-OnPassword

Youdonothavetosetanypasswordstouseyourcomputer.However,ifyoudecidetosetpasswords,read
thefollowingsections.

Passwordconsiderations

Apasswordcanbeanycombinationoflettersandnumbersupto16characters(a-zand0-9).Forsecurity
reasons,itisagoodideatouseastrongpasswordthatcannotbeeasilycompromised.Wesuggestthat
passwordsshouldfollowtheserules:

•Forastrongpassword,use7-16charactersandamixoflettersandnumbers.

•Donotuseyournameoryourusername.

•Donotuseacommonwordoracommonname.

•Usesomethingsignicantlydifferentfromyourpreviouspassword.

Attention:AdministratorandPower-Onpasswordsarenotcasesensitive.

©CopyrightLenovo2012

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AdministratorPassword

SettinganAdministratorPassworddetersunauthorizedpersonsfromchangingcongurationsettings.You
mightwanttosetanAdministratorPasswordifyouareresponsibleformaintainingthesettingsofseveral
computers.

AfteryousetanAdministratorPassword,apasswordpromptisdisplayedeverytimeyouaccesstheLenovo
BIOSSetupUtilityprogram.

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

Setting,changing,ordeletinganAdministratorpassword

TosetanAdministratorPassword,dothefollowing:

Note:Apasswordcanbeanycombinationoflettersandnumbersupto16characters(a-zand0-9).For
moreinformation,see“Passwordconsiderations”onpage13.

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

2.FromtheSecuritymenu,selectSetAdministratorPasswordandpresstheEnterkey.

3.Thepassworddialogboxwillbedisplayed.T ypethepasswordthenpresstheEnterkey.

4.Re-typethepasswordtoconrm,thenpresstheEnterkey.Ifyoutypedthepasswordcorrectly,
thepasswordwillbeinstalled.

TochangeanAdministratorPassword,dothefollowing:

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

2.FromtheSecuritymenu,selectSetAdministratorPasswordandpresstheEnterkey.

3.Thepassworddialogboxwillbedisplayed.TypethecurrentpasswordthenpresstheEnterkey.

4.T ypethenewpassword,thenpresstheEnterkey.Re-typethepasswordtoconrmthenewpassword.
Ifyoutypedthenewpasswordcorrectly,thenewpasswordwillbeinstalled.ASetupNoticedconrming
thatchangeshavebeensavedwillbedisplayed.

TodeleteapreviouslysetAdministratorPassword,dothefollowing:

1.FromtheSecuritymenu,selectSetAdministratorPasswordandpresstheEnterkey.

2.Thepassworddialogboxwillbedisplayed.TypethecurrentpasswordandpresstheEnterkey.

3.T odeleteanAdministratorPassword,leaveeachnewpasswordlineitemblank,thenpresstheEnter
key.ASetupNoticeconrmingthatchangeshavebeensavedwillbedisplayed.

4.ReturntotheLenovoBIOSSetupUtilityprogrammenuandselecttheExitoption.

5.SelectSavechangesandExitfromthemenu.

Power-OnPassword

WhenaPower-OnPasswordisset,youcannotstarttheLenovoBIOSSetupUtilityprogramuntilavalid
passwordistypedfromthekeyboard.

Setting,changing,ordeletingaPower-OnPassword

Note:Apasswordcanbeanycombinationoflettersandnumbersupto16characters(a-zand0-9).

14LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

TosetaPower-OnPassword,dothefollowing:

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

2.FromtheSecuritymenu,selectSetPower-OnPasswordandpresstheEnterkey.

3.Thepassworddialogboxwillbedisplayed.T ypethepassword,thenpresstheEnterkey.

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

TochangeaPower-OnPassword,dothefollowing:

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

2.FromtheSecuritymenu,selectSetPower-OnPasswordandpresstheEnterkey.

3.Thepassworddialogboxwillbedisplayed.TypethecurrentpasswordthenpresstheEnterkey.

4.T ypethenewpassword,thenpresstheEnterkey.Re-typethepasswordtoconrmthenewpassword.
Ifyoutypedthenewpasswordcorrectly,thenewpasswordwillbeinstalled.ASetupNoticedconrming
thatchangeshavebeensavedwillbedisplayed.

TodeleteapreviouslysetPower-OnPassword,dothefollowing:

1.FromtheSecuritymenu,selectSetPower-OnPasswordandpresstheEnterkey.

2.Thepassworddialogboxwillbedisplayed.TypethecurrentpasswordandpresstheEnterkey.

3.T odeletethePower-OnPassword,leaveeachnewpasswordlineitemblank,thenpressEnter.ASetup
Noticeconrmingthatchangeshavebeensavedwillbedisplayed.

4.ReturntotheLenovoBIOSSetupUtilityprogrammenuandselecttheExitoption.

5.SelectSavechangesandExitfromthemenu.

Enablingordisablingadevice

TheDevicesoptionsisusedtoenableordisableuseraccesstothefollowingdevices:

USBFunctionsSelectwhethertoenableordisableUSB(UniversalSerial

Bus)functions.Ifthefunctionsaredisabled,noUSB
devicescanbeused.

SATAMode

OnboardAudioControllerSelectwhethertoenableordisabletheOnboard

OnboardEthernetControllerorLANBootAgentSelectwhethertoenableordisabletheOnboardEthernet

Toenableordisableadevice,dothefollowing:

1.StarttheSetupUtilityprogram(see“StartingtheSetupUtilityprogram”onpage13).

2.FromtheSetupUtilityprogrammenu,selectDevices.

3.Selectanoptionasfollows:

WhenthisfeatureissettoDisabled,alldevices
connectedtotheSATAconnectors(e.g.harddiskdrives
ortheopticaldiskdrive)aredisabledandcannotbe
accessed.

AudioController.WhenthisfeatureissettoDisabled
alldevicesconnectedtotheaudioconnectors(e.g.
headphonesoramicrophone)aredisabledandcannot
beused.

Controller,orselectwhethertoenableordisableload
onboardPXE(PrebootExecutionEnvironment).

SelectUSBSetup,presstheEnterkey,thenselectUSBFunctions.

Chapter5.UsingtheSetupUtility15

SelectA T ADeviceSetup,presstheEnterkey,thenselectSATAMode.

SelectAudioSetup,presstheEnterkey,thenselectOnboardAudioController.

SelectNetworkSetup,presstheEnterkey,thenselectOnboardEthernetSupportorLANBoot
Agent.

4.SelectDisabledorEnabledandpresstheEnterkey.

5.ReturntotheLenovoBIOSSetupUtilityprogrammenuandselecttheExitoption.

6.SelectSavechangesandExitfromthemenu.

Notes:

a.Ifyoudonotwanttosavethesettings,selectDiscardchangesandExitfromthemenu.

b.SelectIDE/AHCIMode:DevicedriversupportisrequiredforACHI.Dependingonhowtheharddisk

imagewasinstalled,changingthissettingmaypreventthesystemfrombooting.

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:

16LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

a.Ifyoudonotwanttosavethesettings,selectDiscardchangesandExitfromthemenu.

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
LenovoBIOSSetupUtilityprogram.

Chapter5.UsingtheSetupUtility17

18LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

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

Aharddiskdrivebooterrorcanbecausedbythefollowing.

Error

Thestartupdriveisnotincludedinthebootsequence
conguration.

Nooperatingsystemisinstalledonthebootdrive.Installanoperatingsystemonthebootdrive.

Thebootsectoronthestartupdriveiscorrupted.

Thedriveisdefective.

FRU/Action

Checkthecongurationandensurethestartupdriveis
inthebootsequence.

Thedrivemustbeformatted.Dothefollowing:

1.Attempttobackupthedataonthefailingharddisk
drive.

2.Usetheoperatingsystemtoformattheharddisk
drive.

Replacetheharddiskdrive.

PowerSupplyProblems

Followtheseproceduresifyoususpectthereisapowersupplyproblem.

Check/VerifyFRU/Action

Checkthatthefollowingareproperlyinstalled:

•PowerCord

•On/OffSwitchconnector

•SystemBoardPowerSupplyconnectors

•Microprocessorconnections

Checkthepowercord.PowerCord

Checkthepower-onswitch.Power-onSwitch

Reseatconnectors

©CopyrightLenovo2012

19

POSTerrorcodes

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

•Checkssomebasicmotherboardoperations

•Checksthatthememoryisworkingcorrectly

•Startsvideooperations

•Veriesthatthebootdriveisworking

POSTErrorMessageDescription/Action

Keyboarderror

RebootandSelectproperBootdeviceorInsertBoot
MediainselectedBootdevice

Cannotinitializethekeyboard.Makesurethekeyboard
isproperlyconnectedtothecomputerandthatnokeys
areheldpressedduringPOST .T opurposelycongure
thecomputerwithoutakeyboard,selectKeyboardless
operationinStartupandsettheoptiontoEnabled.The
BIOSthenignoresthemissingkeyboardduringPOST.

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.

20LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter7.Locatingconnectors,controlsandcomponents

1 2

3 7654 8 9

10

Thissectionprovidesillustrationstohelplocatethevariousconnectors,controlsandcomponentsofthe
computer.

Fontview

Thefollowingillustrationshowsthelocationofcontrolsandcomponentsonthefrontofthecomputer.

Attention:Becarefulnottoblockanyairventsonthecomputer.Blockedairventscancauseoverheating.

1.Built-inmicrophone6.Menubutton

2.Built-incamera

3.Harddiskdriveindicator8.Rightdirectionbutton

4.Wi-Fistatusindicator

5.MonitorOn/Offindicator10.Built-inIRreceiver(Onlyfunctionalonmodels

©CopyrightLenovo2012

7.Leftdirectionbutton

9.MonitorOn/Offbutton

equippedwithaIRreceivermodule)

21

Leftandrightview

1

2

3

6

5

4

7

8

Thefollowingillustrationshowsthelocationofconnectors,controlsandcomponentsontheleftandright
sideofthecomputer.

1.USBconnector

5.Memorycardreader

2.Headphoneconnector6.Powerbutton

3.Microphoneconnector

7.Opticaldriveejectbutton

4.USBconnector8.Opticaldrive

Attention:Donotinsert3-inchdiscsintotheopticaldrive.

22LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Rearview

1 2 3 7654

8

9

Thefollowingillustrationshowsthelocationofconnectorsandcomponentsontherearofthecomputer.

1.TVtunerconnector(selectedmodelsonly,2connectors
forJapan)

2.TVtunerconnector(selectedmodelsonly,2connectors
forJapan)

3.Powerconnector

4.Ethernetconnector9.Airvents

5.USBconnector

6.USBconnector

7.HDMI-outconnector(selectedmodelsonly)

8.Securitycableslot

Chapter7.Locatingconnectors,controlsandcomponents23

Hardwarecomponents

1

2

3

6

7

8

9

10

11

14

18

16

17

15

19

20

21

4

5

12

13

Thefollowingillustrationshowsthecomponentsthatmakeupyourcomputer.

1.Computerstand

12.Wi-Ficard

2.Footcover13.TV- T unercard

3.Middlecover

4.EMIcover15.Heat-sink

5.Motherboard

6.Powerswitchboard17.Harddiskdriveandbay

7.Speakers18.Converterboard

8.RearI/Omodule

9.Chassis20.Opticaldrive

10.LEDpanel

11.Frontbezel

14.Systemfan

16.Camera

19.Frontfunctionboard

21.Opticaldrivebracket

24LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Identifyingpartsonthemotherboard

1 2

3

6

7

8

9

1011121314

15

16

17

18

19

20

21

22

23

4

4

5

Themotherboard(sometimescalledtheplanarorsystemboard)isthemaincircuitboardinyourcomputer.
Itprovidesbasiccomputingfunctionsandsupportsavarietyofdevicesthatarefactory-installedorthat
youcaninstalllater.Thefollowingillustrationshowsthelocationofconnectorsandcomponentsonthe
frontofthemotherboard.

1.HDMI-outconnector12.Battery

2.CPUandsocket

3.Memoryconnector

4.USBconnectors15.DC-inconnector

5.Headphoneconnector

6.Microphoneconnector17.Harddiskdrivepowerconnector

7.Memorycardconnector

8.Speakerconnector19.HarddiskdriveSATAconnector(Balck)

9.Powercontrolconnector(TBD)20.Converterconnector

10.Wi-Ficardconnector

11.TBD

13.TV-T unercardconnector

14.RearI/Omoduleconnector

16.Frontfunctionboard(TBD)

18.OpticaldriveSATAconnector(Red)

21.Cameraconnector

22.Systemfanconnector(22&23TBD,LVDsismissing
inthedrawing)

Chapter7.Locatingconnectors,controlsandcomponents25

26LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter8.Replacinghardware

Attention:Donotremovethecomputercoverorattemptanyrepairbeforereadingthe“Importantsafetyinformation”

intheSafetyandWarrantyGuidethatwasincludedwithyourcomputer.T oobtaincopiesoftheSafetyandWarranty
Guide,gototheSupportWebsiteat:http://consumersupport.lenovo.com.

Note:UseonlypartsprovidedbyLenovo.

Generalinformation

Pre-disassemblyinstructions

Beforestartingthedisassemblyprocedure,makesurethatyoudothefollowing:

1.T urnoffthepowertothesystemandallperipherals.

2.Unplugallpowerandsignalcablesfromthecomputer.

3.Placethesystemonaat,stablesurface.

©CopyrightLenovo2012

27

Replacingthekeyboardandmouse

Note:YourkeyboardwillbeconnectedtoaUSBconnectorateithersideorattherearofthecomputer.

Toreplacethekeyboard:

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

turnoffallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

Step3.Locatetheconnectorforthekeyboard.Referto“Sideviewofthecomputer”and“Rearviewof

thecomputer”.

Step4.Disconnectthedefectivekeyboardcablefromthecomputerandconnectthenewkeyboardcable

tothesameconnector.

Step5.Themousecanbereplacedusingthesamemethod.

Replacingtheadapter

Attention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

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

system,andturnoffthecomputerandallattacheddevices.

28LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step2.Disconnecttheadaptercablefromthecomputer1,thenunplugthepowercordfromelectrical

outlet.2

Step3.Connectthenewadapterasshown.12

Chapter8.Replacinghardware29

Removingthestandbase

Attention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthetouchscreenfromscratches
orotherdamage.

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

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

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

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

Step4.T wistthehandscrewringcounter-clockwiseuntilthebasecomesloosetoreleasethestandbase

fromthestandholder.1

Step5.Slidethestandbaseoutfromtheholderthenputitaside.2

Step6.Referto“Installingthecomputerstand”toreinstallthestandbase.

Removingthefootcover

Attention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

30LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthetouchscreenfromscratches
orotherdamage.

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

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

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

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

Step4.Removethefootbase.Referto“Removingthefootbase” .

Step5.Liftupthestandholderthenslideoutthefootcoverasshown.

Step6.T oreattachthefootcover:

a.Liftupthestandholder.

b.Lineupthefootcoverwithmountingholesonthebackofthecomputer,thenslideitbackinto

position.

Replacingamemorymodule

Attention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Chapter8.Replacinghardware31

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthetouchscreenfromscratches
orotherdamage.

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

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

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

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

Step4.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Pushoutthelatchesonbothsidesofthememorysockettoreleasethememorymodule1and

gentlypullthememorymoduleupwardtoremoveitfromitssocket.2Allofthememorymodules
canberemovedusingthesameprocedure.

Step7.T oinstallamemorymodule:

a.Alignthenewmemorymodulewiththememorysocket,theninsertitandpushdownonthe

topedge.Makesurethelatcheslockthememorymoduleinplace.

Step8.Reattachthefootcoverandstandbase.

32LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Replacingtheharddiskdrive

1

1

Attention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthetouchscreenfromscratches
orotherdamage.

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

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

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

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

Step4.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Pushtheharddiskdrivebracket1,thenslidetheharddiskdriveandbracketoutofthechassisas

shown.2

Chapter8.Replacinghardware33

Step7.Pushthelockpinsoutwardtoreleasetheharddiskdrivefromthebracket.

Step8.T oinstallthenewharddiskdrive:

a.Lineupthenewharddiskdrivewiththebracketandsecureitwiththepins.

b.Slidetheharddiskdriveandbracketbackintoposition.

Step9.Reattachthefootcoverandstandbase.

Replacingtheopticaldrive

Attention:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthetouchscreenfromscratches
orotherdamage.

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

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

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

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

Step4.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

34LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step6.Pushtheopticaldrivepindownwardtopushouttheopticaldriveasshown.12

Step7.Pushasmallironstick(paperclip)intothesmallholeontheopticaldrivecoversothatthedisk

springsoutasshown.

Step8.Removethe2screwsthatsecuretheopticaldrivetothemetalbracket.1

Step9.Useasmallatheadscrewdrivertopressandpushoutthepinsthatsecurethecovertothe

disk.23

Chapter8.Replacinghardware35

Step10.Separatethecoverfromthedefectiveopticaldrive.

Step11.T oinstallthenewopticaldrive:

a.Alignthenewopticaldrivewiththecover,andthenpushthecoverbackintoposition.

b.Screwthemetalbracketbackontothenewopticaldrive.

c.Slidethenewopticaldriveintothedrivebay.

Step12.Reattachthefootcoverandstandbase.

Removingthestandholder

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toremovethestandholder:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removethefourscrewsthatsecurethestandholdertothechassis,thenliftupthestandholderto

removeit.

36LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step7.T oreattachthestandholder:

a.Aligntheholesonthestandholderwithmountingholesonthechassis,placethestand

holderbackintoposition.

b.Securethestandholdertothechassiswiththefourscrews.

Step8.Lineupthefootcoverwithmountingholesonthebackofthecomputer,thenslideitbackinto

position.

Step9.Reattachthestandbase.

Removingthemiddlecover

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toremovethemiddlecover:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethevescrewsthatsecurethemiddlecovertothechassis,thenliftupthemiddlecover

fromtheleftside(opticaldriveside)toremovethemiddlecover.

Chapter8.Replacinghardware37

Step9.T oreattachthemiddlecover:

a.Lineupthemiddlecoverwithchassis,thenplacethemiddlecoverback.

b.Securethemiddlecovertothechassiswiththevescrews.

Step10.Reattachthestandholder,opticaldrive,footcoverandstandbase.

Replacingtheconverterboard

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toreplacetheconverterboard:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

38LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step9.Disconnectthetwocablesfromtheconverter,andthenremovethetwoscrewsthatsecurethe

converterboardtothechassis.

Step10.Liftuptheconverterboardtoremoveit.

Step11.T oinstallthenewconverterboard:

a.Lineuptheholesonthenewconverterboardwiththemountingholesonthechassisand

secureitwiththetwoscrews.

b.Connectthetwocablestothenewconverterboard.

Step12.Reattachthemiddlecover,opticaldrive,standholder,footcoverandstandbase.

Replacingthecamera

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toreplacethecamera:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Chapter8.Replacinghardware39

Step9.Removethetwoscrewsthatsecurecameratothefrontbezel.1

Step10.Liftupthecamera2anddisconnectthedatacablefromthecamera.3

Step11.T oinstallthenewcamera:

a.Connectthedatacabletothenewcamera.

b.Lineuptheholesinthenewcamerawiththemountingholesonthefrontbezelandsecureit

withthetwoscrews.

Step12.Reattachthemiddlecover,opticaldrive,standholder,footcoverandstandbase.

RemovingtheEMIcover

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

ToreplacetheEMIcover

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

system,andturnoffthecomputerandallattacheddevices.

Step2.Unplugallpowercordsfromelectricaloutlets.

40LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

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

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

Step4.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step9.RemovethetwoscrewsthatsecuretheEMIcovertothechassis1,andthenliftitup.2

Step10.T oreattachtheEMIcover:

a.LineuptheholesontheEMIcoverwithmountingholesonthechassis,thenplaceEMIcover

backintoposition.

b.SecuretheEMIcovertothechassiswithtwoscrews.

Step11.Reattachthemiddlecover,opticaldrive,standholder,footcoverandstandbase.

ReplacingtherearI/Omodule

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

ToreplacetherearI/Omodule

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

system,andturnoffthecomputerandallattacheddevices.

Chapter8.Replacinghardware41

Step2.Unplugallpowercordsfromelectricaloutlets.

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

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

Step4.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.RemovethetwoscrewsthatsecuretherearI/Omoduletothemotherboard1andliftitup

gently.2

Step11.DisconnectthepowercablefromthemotherboardandtheTVantennacable(s)fromtheTVtuner

card.

42LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step12.RemovethetwoscrewsthatsecurerearI/Omoduletothebracket1,loosetherearI/Omodule,

thenslideitout.2

Step13.T oinstallthenewrearI/Omodule:

a.LineupthenewI/Omodulewithbracket,theninserttherearI/Omoduleintoposition.

b.SecuretherearI/Omoduletothebracketwiththetwoscrews.

c.ConnectthepowercabletothemotherboardandtheTVantennacable(s)totheTVtunercard.

Step14.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.

Replacingthespeakersystem

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toreplacethespeakersystem:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Chapter8.Replacinghardware43

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.Disconnectthespeakercablesfromtheconnectoronthemotherboard.

Step11.Removethefourscrewsthatsecurethespeakersystemtothechassis,thenliftupthespeaker

systemtoremoveit.

Step12.T oinstallthenewspeakersystem:

a.Placethenewspeakersystemintoposition,thensecureitwithfourscrews.

b.Connectthenewspeakercablestotheconnectoronthemotherboard.

Step13.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.

Replacingthesystemfan

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toreplacethesystemfan

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

44LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.Removethesealingtapebetweenthesystemfanandheat-sink.

Step11.Removethetwoscrewsthatsecurethesystemfantothechassis.

Step12.Disconnectthepowercablefromthemotherboard.

Step13.Liftupthesystemfantoremoveit.

Step14.T oinstallthenewsystemfan:

a.Placethenewsystemfanintoposition,andthensecureittothechassis.

b.Connectthesystemfanpowercabletotheconnectoronthemotherboard.

c.Usethesealingtapetosealthegapin-betweenthesystemfanandheat-sink.

Step15.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.

Replacingtheheat-sink

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toreplacetheheat-sink:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Chapter8.Replacinghardware45

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.Removethesealingtapebetweenthesystemfanandheat-sink.

Step11.Removethevescrewsthatsecuretheheat-sinktothemotherboardandchassis.

Step12.Removetheheat-sinkbyliftingitup.

Attention:Placetheheat-sinkupsidedownonaatsurfacetopreventthermalgreasefromcontaminating
othercomponents.

Attention:UseanalcoholpadtowipethethermalgreaseofftheCPU.

Step13.T oinstallthenewheat-sink:

a.Lineupthenewheat-sinkwithmountingholesonthemotherboard,thenplaceitintoposition.

b.Followthenumbersprintedonthenewheat-sinktosecureitinorderusingthefourscrews.

c.Usethesealingtapetosealthegapin-betweenthesystemfanandheat-sink.

Step14.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.

ReplacingtheTVtunercard

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

ToreplacetheTVtunercard

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

46LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.DisconnecttheantennacablefromtheTV- T unercard.

Step11.RemovethescrewthatsecurestheTV- T unercardtothemotherboard.

Step12.PulltheTV-Tunercardupwardtoremoveitfromthecardportonthemotherboard.

Step13.T oinstallthenewTV-Tunercard:

a.InsertthenotchedendoftheTV-T unercardintothecardportonthemotherboard.

b.SecurenewtheTV-Tunercardtothemotherboardwiththescrew.

c.ConnecttheantennacabletothenewTV- Tunercard.

Step14.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.

ReplacingtheWLANcard

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

ToreplacetheWLANcard:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Chapter8.Replacinghardware47

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.DisconnecttheantennacablesfromtheWLANcard.

Step11.RemovethescrewthatsecurestheWLANcardtothemotherboard.

Step12.LiftuptheWLANcardtoremoveitfromthesocket.

Step13.T oinstallthenewWLANcard:

a.InsertthenotchedendoftheWLANcardintothecardportonthemotherboard.

b.SecurenewtheWLANcardtothemotherboardwiththescrew.

c.ConnecttheantennacablestothenewWLANcard.

Step14.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.

Replacingthefrontcontrolboard

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toreplacethefrontcontrolboard:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.Removethespeakersystem.Referto“Replacingthespeakersystem” .

Step11.Pushthepinthatlocksthefrontcontrolboard,thenslideitout.

48LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step12.Disconnectthedatacablefromthefrontcontrolboard,thenliftupthefrontcontrolboard.

Step13.T oinstallthenewfrontcontrolboard:

a.Connectthedatacabletothenewfrontcontrolboard.

b.Lineupthenewfrontcontrolboardwiththefrontbezel,thenplaceitintoposition.

Step14.Reattachthespeakersystem,EMIcover,middlecover,opticaldrive,standholder,footcover

andstandbase.

Replacingthepowerswitchboard

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toreplacethepowerswitchboard

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder” .

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Chapter8.Replacinghardware49

Step10.Gentlypushthepinthatlocksthepowerswitchboardtoreleaseit,thenslidethepowerswitch

boardout.

Step11.Disconnectthedatacablefromthepowerswitchboard.

Step12.T oinstallthepowerswitchboard:

a.LineuptheholeonthenewpowerswitchboardwiththemountingholeontheLEDpanel(待

确认),thenplaceitintoposition.

b.Connectthepowercabletothenewpowerswitchboard.

Step13.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.

Replacingthemotherboard

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

Toreplacethemotherboard:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removethememorymodules.Referto“Replacingamemorymodule” .

Step7.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step8.Removethestandholder.Referto“Removingthestandholder” .

50LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step9.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step10.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step11.RemovetherearI/Omodule.Referto“ReplacingtherearI/Omodule” .

Step12.Removetheheat-sink.Referto“Replacingtheheat-sink” .

Step13.RemovetheCPU.Referto“ReplacingtheCPU” .(FormodelsC340andC440only.)

Step14.RemovetheTV- T unercard.Referto“ReplacingtheTVtunercard”.

Step15.RemovetheWLANcard.Referto“ReplacingtheWLANcard” .

Step16.Unplugthefollowingcablesfromconnectorsonthemotherboard:

•Powerswitchboardcable

•Speakersystemcable

•Frontcontrolboardcable

•Convertercable

•Cameracable

•Systemfanpowercable

•Harddiskdrivepowercable

•HarddiskdriveSATAcable(Black)

•OpticaldriveSATAcable(Red)

•LEDpaneldatacable

Step17.Removethevescrewsthatsecurethemotherboardtothechassisandliftthemotherboard

uptoremoveit.

Step18.T oinstallthenewmotherboard:

a.Lineuptheholesonthenewmotherboardwiththemountingholeschassisandplacethenew

motherboardintoposition.

b.Usethescrewstosecurethenewmotherboardtothechassis.

c.Connectallthecablestothenewmotherboard.

Step19.Installthefollowingpartstothenewmotherboard:

•WLANcard

•TV-Tunercard

Chapter8.Replacinghardware51

•CPU

•Heat-sink

•RearI/Omodule

•Memorymodule

Step20.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.

ReplacingtheLEDpanel

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.

ToreplacetheLEDpanel:

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.Removethestandbase.Referto“Removingthestandbase” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removethememorymodules.Referto“Replacingamemorymodule” .

Step7.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step8.Removethestandholder.Referto“Removingthestandholder” .

Step9.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step10.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step11.Removethespeakersystem.Referto“Replacingthespeakersystem” .

Step12.RemovetherearI/Omodule.Referto“ReplacingtherearI/Omodule” .

Step13.Removethesystemfan.Referto“Replacingthesystemfan” .

Step14.Removetheheat-sink.Referto“Replacingtheheat-sink” .

Step15.Disconnectthefollowingcablesfromconnectorsonthemotherboard:

•WLANantennacables

•Powerswitchboard

•Frontcontrolboardcable

•Cameracable

•LEDpaneldatacable

52LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Step16.Removethe9screwsthatsecurethechassistothefrontbezel.1

Step17.RemovethefourscrewsthatsecuretheLEDpaneltothechassis,andthendisconnectthepower

cablefromtheLEDpanel.23

Step18.LiftupthechassistoseparatetheLEDpanelfromthechassis.

Step19.T oinstallthenewtheLEDpanel:

a.LineupthechassiswithnewLEDpanel,andthenplaceitintoposition.

b.SecuretheLEDpaneltothechassiswiththefourscrews.

c.ConnecttheconvertercabletothenewLEDpanel.

d.LineupthechassisandnewLEDpanelwiththefrontbezel,andthenplaceitintoposition.

e.Securethechassistothefrontbezelwiththeninescrews.

f.Connectallthecablestotheconnectorsonthemotherboard.

Step20.Reattachtheheat-sink,systemfan,rearI/Omodule,speakersystem,EMIcover,middlecover,

opticaldrive,standholder,footcoverandstandbase.

Chapter8.Replacinghardware53

54LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter9.FRUlists

1

2

3

6

7

8

9

10

11

14

18

16

17

15

19

20

21

4

5

12

13

Thischapterliststheinformationontheeldreplaceableunits(FRUs).

Attention:BesuretoreadandunderstandallthesafetyinformationbeforereplacinganyFRUs.

Notes:FRUsthathavea1or2intheCRUcolumnareCustomerReplaceableUnits(CRUs).

•1–identiespartsthatarefairlysimpletoreplace,requiringfewornotools.

•2–identiespartsthatareslightlymoredifculttoreplace.

•N-identiespartsthatarenottobereplacedbythecustomer.

Service

Item#Description

1

Computerstand

？？？？

©CopyrightLenovo2012

Part

CRUID

Number

N

55

Footcover 2

？？？？

Middlecover 3

？？？？

4

EMIcover

？？？？

5

Motherboard

C345/C445CPU_E1-1200W/WIN8MB

C345/C445CPU_E2-1800W/WIN8MB

C345/C445CPU_E450W/WIN8MB

C345/C445CPU_E1-1200W/OWIN8MB

C345/C445CPU_E2-1800W/OWIN8MB

C345/C445CPU_E450W/OWIN8MB

Powerswitchboard 6

7

Speakers

C345SPEAKER

8

RearI/Omodule

C445REARIOBRACKETW/OTVW/HDMI

C445REARIOBRACKETW/OTVW/OHDMI

C445REARIOBRACKETW/TVNTSCW/OHDMI

C445REARIOBRACKETW/TVNTSCW/HDMI

C445REARIOBRACKETW/TVPALW/HDMI

C445REARIOBRACKETW/TVPALW/OHDMI

C345REARIOBRACKETW/OTVW/HDMI

C345REARIOBRACKETW/OTVW/OHDMI

C345REARIOBRACKETW/TVNTSCW/OHDMI

C345REARIOBRACKETW/TVNTSCW/HDMI

C345REARIOBRACKETW/TVPALW/HDMI

C345REARIOBRACKETW/TVPALW/OHDMI

9

Chassis

LEDpanel

10

LM200WD3-TLF118200171N

M200RW01V618200419N

LTM200KT10-M01,M0218200079N

LM215WF4-TLG1

M215HW03V118200169N

90000736N

90000738N

90000740N

90000737N

90000739N

90000741N

？？

90201655N

90201798N

90201799N

90201800N

90201801N

90201802N

90201803N

90201669

90201670

90201671

90201672

90201673

90201674

？？

18200166N

N

N

N

N

N

56LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

11

12

13

14

15

16

17

18

Frontbezel

C445FRONTBEZEL（BLACK）

C445FRONTBEZEL（RED）

C445FRONTBEZEL(WHITE)

C345FRONTBEZEL（BLACK）

C345ODDBezel(BLACK)

C345FRONTBEZEL(WHITE)

Wi-Ficard

LTNRTL8188CE11nSBHMCWiFicard(wowl)

CBTBCM9431311nHMCWiFicard

TV- T unercard

AvermediaH339BBDVB-TMiniTVCard

AvermediaH339BAATSCMiniTVCard

Systemfan

C345/C445AVCFan

C345/C445DeltaFan

Heat-sink

C345/C445TaisolThermalmodule

C345/C445CoolerMasterThermalmodule

Camera

BisonM720PVCOV9712CAM

BisonM720PVCOV9712MICrubberCAM

CCYM720PVCOV9712CAM

Harddiskdriveandbay

SGTPharaoh4KST320DM000320GHDD-LH

WDXL500AWD3200AAKX-08ERMA0320GHDD-LH

WDXL500SM6GWD5000AAKX-083CA1500GHDD-LH

SGTPharaoh4KST500DM002500GHDD-LH

WDXL500AWD5000AAKX-08ERMA0500GHDD-LH

SGTGrenadaST1000DM0031TBHDD-LH

Converterboard

C345CONVERTERForLG

C345CONVERTERForAUO

C445CONVERTERBOARDFORLG

C445CONVERTERBOARDFORAUO

90201762N

90201763N

90201764

90201646

90201647N

90201648N

11200352N

20002505N

11200290N

11200291N

90200727N

90200728N

90200729N

90200730N

20200085N

20200369

20200086N

16-2001771

162002461

16-2000311

16-2001781

162002471

162001821

90000745

90000746

90000756N

90000757N

Frontfunctionboard 19

？？？？

N

Chapter9.FRUlists57

20

Opticaldrive

PLDSDS-8A8SH

SN-208AB

HLDSGT50N

21

Opticaldrivebracket

？？??

252014871

252011081

252016351

N

58LenovoC345/C445All-In-OnePCHardwareMaintenanceManual

Chapter10.Generalinformation

Thischapterprovidesgeneralinformationthatappliestoallcomputermodelscoveredbythismanual.

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:Y oucanspecifyadateandtimeatwhichthecomputerwillbeturnedonautomatically.
Thiscanbeeitherasingleevent,adailyeventoraweeklyevent.

•WakeUponLAN:ThisfeatureallowsLANadaptercardtowaketheSystem.

©CopyrightLenovo2012

59