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Lenovo C360 NT Owner's manual

LenovoC360–365NTAll-In-One
ComputerHardwareMaintenanceManual
ideaideaideaCentreidea
MachineTpes:10147/F0AB[C360];10148/F0AC[C365]
LenovoC360–365NTAll-In-OneComputer
HardwareMaintenanceManual
MachineTpes:10147/F0AB[C360];10148/F0AC[C365]
FirstEdition(October2013)21st
©CopyrightLenovo2013.
LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwarearedeliveredpursuantaGeneralServices
Administration“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforthinContractNo.
GS-35F-05925
Contents
Chapter1.Aboutthisanual......1
ImportantSafetInformation..........1
Chapter2.Safetyinforation......3
Generalsafet................3
Electricalsafet...............3
Safetinspectionguide............5
Handlingelectrostaticdischarge-sensitive
devices..................5
Groundingrequirements............6
Safetnotices................6
Chapter3.Generalinforation.....9
Specifications................9
Chapter4.GeneralCheckout.....11
Chapter5.UsingtheSetupUtility...13
StartingtheLenovoBIOSSetupUtilitprogram.13
Viewingandchangingsettings........13
Usingpasswords..............13
Enablingordisablingadevice........15
Selectingastartupdevice..........16
ExitingtheLenovoBIOSSetupUtilitprogram..17
Chapter6.Sypto-to-FRUIndex..19
Harddiskdrivebooterror..........19
PowerSupplProblems...........19
POSTerrorcodes.............20
Undeterminedproblems...........20
Chapter7.Replacinghardware....21
Generalinformation.............21
Replacingthekeboardandmouse......22
Replacingtheadapter............22
Removingthestandbase..........24
Removingthefootcover...........24
Replacingamemormodule.........25
Replacingtheharddiskdrive.........27
Replacingtheopticaldrive..........28
Removingthestandholder..........30
Removingthemiddlecover.........31
Replacingtheconverterboard........32
RemovingtheEMIcover...........33
ReplacingtheTVtunercard.........34
ReplacingtheWLANcard..........35
Replacingtheheat-sink...........36
Replacingthesstemfan..........37
Replacingthespeakersstem........38
Replacingthefrontcontrolboard.......39
Replacingthefrontindicatorboard.......40
Replacingthemotherboard..........41
Replacingthecamera............43
ReplacingtheLEDpanel...........44
Chapter8.Generalinforation....47
AdditionalServiceInformation........47
©CoprightLenovo2013iii
ivLenovoC360–365NTAll-In-OneComputerHardwareMaintenanceManual
Chapter1.Aboutthisanual
ThismanualcontainsserviceandreferenceinformationforLenovoC360–365nonetouchAll-In-One
computerslistedonthecover.ItisintendedonlfortrainedservicerswhoarefamiliarwithLenovocomputer
products.
BeforeservicingaLenovoproduct,besuretoreadtheSafetInformation.
ThedescriptionoftheTV-tunercardinthismanualappliesonltocomputerswithaTV-tunercardinstalled.
ItdoesnotappltocomputerswithoutaTV-tunercard.
IportantSafetyInforation
BesuretoreadallCAUTIONandDANGERsectionsinthismanualbeforefollowinganoftheinstructions.
VeuillezliretouteslesconsignesdetpeDANGERetATTENTIONduprésentdocumentavantd’exécuter
lesinstructions.
LesenSieunbedingtalleHinweisevomTp“ACHTUNG”oder“VORSICHT”indieserDokumentation,bevor
SieirgendwelcheVorgängedurchführen
LeggereleistruzioniintrodottedaATTENZIONEePERICOLOpresentinelmanualeprimadieseguireuna
qualsiasidelleistruzioni
Certifique-sedelertodasasinstruçõesdecuidadoeperigonestemanualantesdeexecutarqualquer
umadasinstruções
Esimportantequeleatodaslasdeclaracionesdeprecaucióndepeligrodeestemanualantesdeseguir
lasinstrucciones.
©CoprightLenovo20131
2LenovoC360–365NTAll-In-OneComputerHardwareMaintenanceManual
Chapter2.Safetyinforation
Thischaptercontainsthesafetinformationthatouneedtobefamiliarwithbeforeservicingacomputer.
Generalsafety
Followtheserulestoensuregeneralsafet:
•Keeptheareasaroundthecomputerclearandcleanduringandaftermaintenance.
•Whenliftinganheavobject:
1.Ensureoucanstandsafelwithoutslipping.
2.Distributetheweightoftheobjectequallacrossbothfeet.
3.Liftslowl.Nevermovesuddenlortwistwhenouattempttolift.
4.Liftbstandingorbpushingupwithourlegmuscles;thisactionremovesthestrainfromthe
musclesinourback.
Donotattempttoliftanyobjectsthatweighmorethan16kg(35lb)orobjectsthatyouthinkare
tooheavyforyou.
•Donotperformanactionthatwouldcreateahazardforthecustomer,orwouldmakethecomputer
unsafe.
•Beforeoustartthecomputer,ensurethatotherservicerepresentativesandcustomerpersonnelarenot
inapositionthatwouldcreateahazardforthem.
•Placeremovedcoversandotherpartsinasafeplace,awafromallpersonnel,whileouareservicingthe
computer.
•Keepourtoolcaseawafromareasthatpeoplemawalkthroughtoensureno-onetripsoverit.
•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Ensurethatoursleeves
arefastenedorrolledupaboveourelbows.Ifourhairislong,tieorfastenitback.
•Inserttheendsofournecktieorscarfinsideclothingorfastenitwithanon-conductiveclip,
approximatel8centimeters(3inches)fromtheend.
•Donotwearjewelr,chains,metal-frameeeglasses,ormetalfastenersforourclothing.
Reeber:Metalobjectsaregoodelectricalconductors.
•Wearsafetglasseswhenouare:hammering,drillingsoldering,cuttingwire,attachingsprings,using
solvents,orworkinginanotherconditionsthatmightbehazardoustoourees.
•Afterservice,reinstallallsafetshields,guards,labels,andgroundwires.Replaceansafetdevice
thatiswornordefective.
•Reattachallcoverscorrectlbeforereturningthecomputertothecustomer.
Electricalsafety
CAUTION:
Electricalcurrentfropower,telephone,andcounicationcablescanbehazardous.T oavoid
personalinjuryorequipentdaage,disconnectanyattachedpowercords,telecounication
cables,networkcables,andodecablesbeforeyouopenthecoputercovers,unlessinstructed
otherwiseintheinstallationandconfigurationprocedures.
©CoprightLenovo20133
Observethefollowingruleswhenworkingonelectricalequipment.
Iportant:Useonlapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoft
materialthatdoesnotinsulateouwhenworkingwithliveelectricalcurrents.Mancustomershaverubber
floormatsneartheirequipmentthatcontainsmallconductivefiberstodecreaseelectrostaticdischarge.
•Findtheroomemergencpower-off(EPO)switch,disconnectingswitch,orelectricaloutlet.Ifanelectrical
accidentoccurs,oucanthenoperatetheswitchorunplugthepowercordquickl.
•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.
•Disconnectallpowerbefore:
–Performingamechanicalinspection
–Workingnearpowersupplies
–RemovingorinstallingFieldReplaceableUnits(FRUs)
•Beforeoustarttoworkonthecomputer,unplugthepowercord.Ifoucannotunplugit,askthe
customertopower-offtheelectricaloutletthatsuppliespowertothemachineandtolocktheelectrical
outletintheoffposition.
•Ifouneedtoworkonacomputerthathasexposedelectricalcircuits,observethefollowingprecautions:
–Ensurethatanotherperson,familiarwiththepower-offcontrols,isnearou.
Reeber:Anotherpersonmustbetheretoswitchoffthepower,ifnecessar.
–Useonlonehandwhenworkingwithpowered-onelectricalequipment;keeptheotherhandinour
pocketorbehindourback.
Reeber:Theremustbeacompletecircuittocauseelectricalshock.Bobservingtheaboverule,
oumapreventacurrentfrompassingthroughourbod.
–Whenusingatester,setthecontrolscorrectlandusetheapprovedprobeleadsandaccessoriesfor
thattester.
–Standonsuitablerubbermats(obtainedlocall,ifnecessar)toinsulateoufromgroundssuchas
metalfloorstripsandmachineframes.
Observethespecialsafetprecautionswhenouworkwithverhighvoltages;theseinstructionsarein
thesafetsectionsofthemaintenanceinformation.Useextremecarewhenmeasuringhighvoltages.
•Regularlinspectandmaintainourelectricalhandtoolstoensurethearesafetouse.
•Donotusewornorbrokentoolsandtesters.
•Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkthatithasbeenpoweredoff.
•Alwaslookcarefullforpossiblehazardsinourworkarea.Examplesofthesehazardsarewetfloors,
non-groundedpowerextensioncables,conditionsthatmacauseorallowpowersurges,andmissing
safetgrounds.
•Donottouchliveelectricalcircuitswiththereflectivesurfaceofaplasticdentalmirror.Thissurfaceis
conductive,andtouchingalivecircuitcancausepersonalinjuranddamagetothecomputer.
•Donotservicethefollowingpartswiththepoweronwhentheareremovedfromtheirnormaloperating
positionsinacomputer:
–Powersupplunits
–Pumps
–Blowersandfans
–Motorgenerators
andsimilarunits.(Thispracticeensurescorrectgroundingoftheunits.)
•Ifanelectricalaccidentoccurs:
–Usecaution;donotbecomeavictimourself.
4LenovoC360–365NTAll-In-OneComputerHardwareMaintenanceManual
–Switchoffpower.
–Sendanotherpersontogetmedicalaid.
Safetyinspectionguide
Theintentofthisinspectionguideistoassistouinidentifingpotentialhazardsposedbtheseproducts.
Eachcomputer,asitwasdesignedandbuilt,hadrequiredsafetitemsinstalledtoprotectusersand
servicepersonnelfrominjur.Thisguideaddressesonlthoseitems.However,goodjudgmentshouldbe
usedtoidentifpotentialsafethazardsduetoattachmentoffeaturesoroptionsnotcoveredbthis
inspectionguide.
Ifanhazardsarepresent,oumustdeterminehowserioustheapparenthazardcouldbeandwhetherou
cancontinuewithoutfirstresolvingtheproblem.
Considerthefollowingitemsandthesafethazardsthepresent:
•Electricalhazards,especiallprimarpower(primarvoltageontheframecancauseseriousorfatal
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
continuitfor0.1ohmorlessbetweentheexternalgroundpinandframeground.
b.Thepowercordshouldbetheappropriatetpeasspecifiedinthepartslistings.
c.Insulationmustnotbefraedorworn.
4.Removethecover.
5.Checkforanobviousalterations.Usegoodjudgmentastothesafetofanalterations.
6.Checkinsidetheunitforanobvioushazards,suchasmetalfilings,contamination,waterorother
liquids,orsignsoffireorsmokedamage.
7.Checkforworn,fraed,orpinchedcables.
8.Checkthatthepower-supplcoverfasteners(screwsorrivets)havenotbeenremovedortamperedwith.
Handlingelectrostaticdischarge-sensitivedevices
Ancomputerpartcontainingtransistorsorintegratedcircuits(ICs)shouldbeconsideredsensitiveto
electrostaticdischarge(ESD).ESDdamagecanoccurwhenthereisadifferenceinchargebetweenobjects.
ProtectagainstESDdamagebequalizingthechargesothatthecomputer,thepart,theworkmat,andthe
personhandlingthepartareallatthesamecharge.
Notes:
1.Useproduct-specificESDprocedureswhentheexceedtherequirementsnotedhere.
2.MakesurethattheESDprotectivedevicesouusehavebeencertified(ISO9000)asfulleffective.
WhenhandlingESD-sensitiveparts:
Chapter2.Safetinformation5
•Keepthepartsinprotectivepackagesuntiltheareinsertedintotheproduct.
•Avoidcontactwithotherpeoplewhilehandlingthepart.
•Wearagroundedwriststrapagainstourskintoeliminatestaticonourbod.
•Preventthepartfromtouchingourclothing.Mostclothingisinsulativeandretainsachargeeven
whenouarewearingawriststrap.
•Usetheblacksideofagroundedworkmattoprovideastatic-freeworksurface.Thematisespeciall
usefulwhenhandlingESD-sensitivedevices.
•Selectagroundingsstem,suchasthoselistedbelow,toprovideprotectionthatmeetsthespecific
servicerequirement.
Note:TheuseofagroundingsstemisdesirablebutnotrequiredtoprotectagainstESDdamage.
–AttachtheESDgroundcliptoanframeground,groundbraid,orgreen-wireground.
–UseanESDcommongroundorreferencepointwhenworkingonadouble-insulatedor
batter-operatedsstem.Y oucanusecoaxorconnector-outsideshellsonthesesstems.
–Usetheroundground-prongoftheACplugonAC-operatedcomputers.
Groundingrequireents
Electricalgroundingofthecomputerisrequiredforoperatorsafetandcorrectsstemfunction.Proper
groundingoftheelectricaloutletcanbeverifiedbacertifiedelectrician.
Safetynotices
TheCAUTIONandDANGERsafetnoticesinthissectionareprovidedinthelanguageofEnglish.
DANGER
Electricalcurrentfrompower,telephoneandcommunicationcablesishazardous.
Toavoidashockhazard:
•Donotconnectordisconnectanycablesorperforinstallation,aintenance,orreconfiguration
ofthisproductduringanelectricalstor.
•Connectallpowercordstoaproperlywiredandgroundedelectricaloutlet.
•Connectanyequipentthatwillbeattachedtothisproducttoaproperlywiredoutlet.
•Whenpossible,useonehandonlytoconnectordisconnectsignalcables.
•Neverturnonanyequipentwhenthereisevidenceoffire,water,orstructuraldaage.
•Disconnecttheattachedpowercords,telecounicationscables,networkcables,andode
cablesbeforeyouopenthedevicecovers,unlessinstructedotherwiseintheinstallationand
configurationprocedures.
•Connectanddisconnectcablesasdescribedinthefollowingtablewheninstalling,oving,or
openingcoversonthisproductorattacheddevices.
6LenovoC360–365NTAll-In-OneComputerHardwareMaintenanceManual
ToConnectToDisconnect
1.TurneverthingOFF.
2.First,attachallcablestodevices.
3.Attachsignalcablestoconnectors.
4.Attachpowercordstooutlet.
5.TurndeviceON.
1.TurneverthingOFF.
2.First,removepowercordsfromoutlets.
3.Removesignalcablesfromconnectors.
4.Removeallcablesfromdevices.
CAUTION:
Whenreplacingthelithiubattery,useonlyPartNuber45C1566oranequivalenttypebattery
recoendedbytheanufacturer.Ifyoursystehasaodulecontainingalithiubattery,replace
itonlywiththesaeoduletypeadebythesaeanufacturer.Thebatterycontainslithiuand
canexplodeifnotproperlyused,handled,ordisposedof.
Donot:
•Throwintoorierseinwater
•Heattoorethan100°C(212°F)
•Repairordisasseble
Disposeofthebatteryasrequiredbylocalordinancesorregulations.
CAUTION:
Whenlaserproducts(suchasCD-ROMs,DVD-ROMdrives,fiberopticdevices,ortransitters)are
installed,notethefollowing:
•Donotreovethecovers.Reovingthecoversofthelaserproductcouldresultinexposureto
hazardouslaserradiation.Therearenoserviceablepartsinsidethedevice.
•Useofcontrolsoradjustentsorperforanceofproceduresotherthanthosespecifiedherein
ightresultinhazardousradiationexposure.
DANGER
SoelaserproductscontainanebeddedClass3AorClass3Blaserdiode.Notethefollowing:
Thesediodeseitradiationwhenopen.Donotstareintothebea,donotviewdirectlywith
opticalinstruents,andavoiddirectexposuretothebea.
Chapter2.Safetinformation7
≥18kg(37lbs)≥32kg(70.5lbs)≥55kg(121.2lbs)
CAUTION:
Usesafepracticeswhenlifting.
CAUTION:
Thepowercontrolbuttononthedeviceandthepowerswitchonthepowersupplydonotturnoff
theelectricalcurrentsuppliedtothedevice.Thedevicealsoighthaveorethanonepower
cord.T oreoveallelectricalcurrentfrothedevice,ensurethatallpowercordsaredisconnected
frothepowersource.
1
2
CAUTION:
Donotplaceanyobjectweighingorethan82kg(180lbs.)ontopofrack-ounteddevices.
8LenovoC360–365NTAll-In-OneComputerHardwareMaintenanceManual
Chapter3.Generalinforation
Thischapterprovidesgeneralinformationthatappliestoallcomputermodelscoveredbthismanual.
Specifications
Thissectionliststhephsicalspecificationsforourcomputer.
Thissectionliststhephysicalspecificationsforyourcoputer.
TypeLenovoC360–365
Thissectionliststhephsicalspecifications.
Environent
Airtemperature:
Operating:10°to35°C
Transit:-20°to55°C
Humidit:
Operating:35%to80%
Transit:20%to90%(40°C)
Altitude:86KPato106KPa
Electricalinput:
Inputvoltage:90V-264V(AC)
Inputfrequenc:47Hz-63Hz
©CoprightLenovo20139
10LenovoC360–365NTAll-In-OneComputerHardwareMaintenanceManual
Chapter4.GeneralCheckout
Attention:Thedrivesinthecomputerouareservicingmighthavebeenrearrangedorthedrivestartup
sequencemahavebeenchanged.Beextremelcarefulduringwriteoperationssuchascoping,saving,or
formatting.Dataorprogramscanbeoverwrittenifouselectanincorrectdrive.
Generalerrormessagesappearifaproblemorconflictisfoundbanapplication,theoperatingsstem,or
both.Foranexplanationofthesemessages,refertotheinformationsuppliedwiththatsoftwarepackage.
Usethefollowingproceduretohelpdeterminethecauseoftheproblem:
1.Power-offthecomputerandallexternaldevices.
2.Checkallcablesandpowercords.
3.Setalldisplacontrolstothemiddleposition.
4.Power-onallexternaldevices.
5.Power-onthecomputer.
•Lookfordisplaederrorcodes.
•Lookforreadableinstructionsoramainmenuonthedispla.
Ifoudidnotreceivethecorrectresponse,proceedtostep6.
Ifoudidreceivethecorrectresponse,proceedtostep7.
6.Ifoneofthefollowinghappens,followtheinstructiongiven:
•IfthecomputerdisplasaPOSTerror,goto“POSTerrorcodes” .
•Ifthecomputerhangsandnoerrorisdisplaed,continueatstep7.
7.Iftheteststopsandoucannotcontinue,replacethelastdevicetested.
©CoprightLenovo201311
12LenovoC360–365NTAll-In-OneComputerHardwareMaintenanceManual
Chapter5.UsingtheSetupUtility
TheSetupUtilitprogramisusedtoviewandchangetheconfigurationsettingsofourcomputer,regardless
ofwhichoperatingsstemouareusing.However,theoperatingsstemsettingsmightoverrideansimilar
settingsintheSetupUtilitprogram.
StartingtheLenovoBIOSSetupUtilityprogra
TostarttheLenovoBIOSSetupUtilitprogram,dothefollowing:
1.Ifourcomputerisalreadonwhenoustartthisprocedure,shutdowntheoperatingsstemand
turnoffthecomputer.
2.PressandholdtheF1kethenturnonthecomputer.WhentheLenovoBIOSSetupUtilitprogramis
displaed,releasetheF1ke.
Note:IfaPower-OnPasswordoranAdministratorPasswordhasbeenset,theSetupUtilitprogrammenu
willnotbedisplaeduntiloutpeourpassword.Formoreinformation,see“Usingpasswords.”
Viewingandchangingsettings
SstemconfigurationoptionsarelistedintheLenovoBIOSSetupUtilitprogrammenu.T ovieworchange
settings,see“StartingtheSetupUtilitprogram.”
YoumustusethekeboardwhenusingtheLenovoBIOSSetupUtilitmenu.Thekesusedtoperform
varioustasksaredisplaedonthebottomofeachscreen.
Usingpasswords
YoucanusetheLenovoBIOSSetupUtilitprogramtosetpasswordstopreventunauthorizedpersons
fromgainingaccesstoourcomputeranddata.See“StartingtheSetupUtilitprogram.”Thefollowing
tpesofpasswordsareavailable:
•AdministratorPassword
•Power-OnPassword
Youdonothavetosetanpasswordstouseourcomputer.However,ifoudecidetosetpasswords,read
thefollowingsections.
Passwordconsiderations
Apasswordcanbeancombinationoflettersandnumbersupto16characters(a-zand0-9).Forsecurit
reasons,itisagoodideatouseastrongpasswordthatcannotbeeasilcompromised.Wesuggestthat
passwordsshouldfollowtheserules:
•Forastrongpassword,use7-16charactersandamixoflettersandnumbers.
•Donotuseournameorourusername.
•Donotuseacommonwordoracommonname.
•Usesomethingsignificantldifferentfromourpreviouspassword.
Attention:AdministratorandPower-Onpasswordsarenotcasesensitive.
©CoprightLenovo201313
AdinistratorPassword
SettinganAdministratorPassworddetersunauthorizedpersonsfromchangingconfigurationsettings.You
mightwanttosetanAdministratorPasswordifouareresponsibleformaintainingthesettingsofseveral
computers.
AfterousetanAdministratorPassword,apasswordpromptisdisplaedevertimeouaccesstheLenovo
BIOSSetupUtilitprogram.
IfboththeAdministratorandPower-OnPasswordareset,oucantpeeitherpassword.However,oumust
useourAdministratorPasswordtochangeanconfigurationsettings.
Setting,changing,ordeletinganAdinistratorpassword
TosetanAdministratorPassword,dothefollowing:
Note:Apasswordcanbeancombinationoflettersandnumbersupto16characters(a-zand0-9).For
moreinformation,see“Passwordconsiderations”onpage13.
1.StarttheLenovoBIOSSetupUtilitprogram(see“StartingtheLenovoBIOSSetupUtilitprogram”on
page13).
2.FromtheSecuritymenu,selectSetAdinistratorPasswordandpresstheEnterke.
3.Thepassworddialogboxwillbedisplaed.TpethepasswordthenpresstheEnterke.
4.Re-tpethepasswordtoconfirm,thenpresstheEnterke.Ifoutpedthepasswordcorrectl,
thepasswordwillbeinstalled.
TochangeanAdministratorPassword,dothefollowing:
1.StarttheLenovoBIOSSetupUtilitprogram(see“StartingtheLenovoBIOSSetupUtilitprogram”on
page13).
2.FromtheSecuritymenu,selectSetAdinistratorPasswordandpresstheEnterke.
3.Thepassworddialogboxwillbedisplaed.TpethecurrentpasswordthenpresstheEnterke.
4.Tpethenewpassword,thenpresstheEnterke.Re-tpethepasswordtoconfirmthenewpassword.
Ifoutpedthenewpasswordcorrectl,thenewpasswordwillbeinstalled.ASetupNoticedconfirming
thatchangeshavebeensavedwillbedisplaed.
TodeleteapreviouslsetAdministratorPassword,dothefollowing:
1.FromtheSecuritymenu,selectSetAdinistratorPasswordandpresstheEnterke.
2.Thepassworddialogboxwillbedisplaed.TpethecurrentpasswordandpresstheEnterke.
3.TodeleteanAdinistratorPassword,leaveeachnewpasswordlineitemblank,thenpresstheEnter
ke.ASetupNoticeconfirmingthatchangeshavebeensavedwillbedisplaed.
4.ReturntotheLenovoBIOSSetupUtilitprogrammenuandselecttheExitoption.
5.SelectSavechangesandExitfromthemenu.
Power-OnPassword
WhenaPower-OnPasswordisset,oucannotstarttheLenovoBIOSSetupUtilitprogramuntilavalid
passwordistpedfromthekeboard.
Setting,changing,ordeletingaPower-OnPassword
Note:Apasswordcanbeancombinationoflettersandnumbersupto16characters(a-zand0-9).
14LenovoC360–365NTAll-In-OneComputerHardwareMaintenanceManual

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