Lenovo Yoga 14 Product information

HardwareMaintenanceManual

ThinkPadYoga14

Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadthegeneralinformation

underAppendixA“Notices”onpage91.

FirstEdition(October2014)

©CopyrightLenovo2014.

LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwareisdeliveredpursuantaGeneralServicesAdministration

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

Contents

Aboutthismanual...........iii

Chapter1.Safetyinformation.....1

Generalsafety...............1

Electricalsafety..............1

Safetyinspectionguide...........2

Handlingdevicesthataresensitivetoelectrostatic

discharge.................3

Groundingrequirements...........4

Safetynotices(multilingualtranslations).....4

Chapter2.Importantservice

information..............19

StrategyforreplacingFRUs.........19

Strategyforreplacingaharddiskdrive,a

hybriddrive,orasolid-statedrive.....19

Importantnoticeforreplacingasystem

board................20

Howtouseerrormessage........20

StrategyforreplacingFRUsforCTO,specialbid

model,andstandardmodels.........20

Productdeﬁnition............20

FRUidentiﬁcation............21

Chapter3.Generalcheckout.....23

Whattodoﬁrst..............23

Checkoutguide..............24

LenovoSolutionCenter.........24

Quicktestprograms...........24

UEFIdiagnosticprogram.........25

Bootablediagnosticprograms.......26

Powersystemcheckout...........26

Checkingtheacpoweradapter......27

Checkingthebuilt-inbatteryandoperational

charging...............27

Checkingthecoin-cellbattery.......28

Chapter4.Relatedservice

information..............29

Restoringthefactorycontentsbyusingthe

RecoveryDiscSet.............29

RecoveryoverviewfortheWindows8and

Windows8.1operatingsystem........30

Refreshingyourcomputer........30

Resettingyourcomputertothefactorydefault

settings................31

Usingtheadvancedstartupoptions....31

RecoveringyouroperatingsystemifWindows

8orWindows8.1failstostart.......31

Creatingandusingrecoverymedia.....32

UsingtheWindowsrecoveryprogramsonthe

Windows8operatingsystem.........33

Passwords................34

Power-onpassword...........34

Harddiskpassword...........34

Supervisorpassword..........34

Howtoremovethepower-onpassword...35

Howtoremovetheharddiskpassword...35

Powermanagement............36

Screenblankmode(fortheWindows7

operatingsystemonly)..........36

Sleepmode..............36

Hibernationmode...........37

Symptom-to-FRUindex...........37

Numericerrorcodes..........38

Errormessages............39

Beepsymptoms............39

No-beepsymptoms...........40

LCD-relatedsymptoms.........40

Intermittentproblems..........40

Undeterminedproblems.........41

Chapter5.Statusindicators.....43

Chapter6.Functionkeys.......45

Chapter7.Locations.........47

Locatingcomputercontrols,connectors,and

indicators.................47

Frontview...............47

Bottomview..............48

Rearview...............48

LocatingCRUsandFRUs..........49

MajorCRUsandFRUs..........50

LCDFRUs..............52

MiscellaneouspartsandotherFRUs....53

LookingupFRUinformation.........53

Chapter8.FRUreplacement

notices................55

Screwnotices...............55

Retainingserialnumbers...........56

Restoringtheserialnumberofthesystem

unit.................56

RetainingtheUUID...........57

©CopyrightLenovo2014

i

Chapter9.Removingorreplacinga

FRU..................59

Generalguidelines.............59

Beforeservicingthecomputer........60

Disablingthebuilt-inbattery.......60

1010Lenovo-OneLink-connectorcover.....60

1020Keyboard..............61

1030Basecoverassembly..........63

1040Batterypack.............65

1050Internalstoragedriveandthestoragedrive

connector................66

1060Memorymodule............67

1070WirelessLANcard...........68

1080Coin-cellbattery............69

1090ButtonI/Ocard............69

1100Audio/USB/OneLink/acpowercard....70

1110M.2solid-statedrive..........72

1120Speakerassembly...........73

1130ThinkPad-logo-LEDcard........74

1140Mediacardreader...........75

1150Systemboard.............75

1160Thermalfan.............77

1170KeyboardbezelassemblyandLCDunit..78

2010LCDbezelassembly..........80

2020LCDmodule.............81

2030Touchcontrolboard..........82

2040Windows-Start-screen-buttonvibrator...82

2050Hingekit...............83

2060Hingerubberclips...........83

2070Cameraandmicrophonecombocard...84

2080LCDcableassembly..........85

2090Touchcontrolboardcable/ASLsensor

cable..................86

2100ThinkPad-logo-LEDcardontheLCDcover.86

2110WirelessLANassembly.........87

2120Amberlightsensorwithcable......88

AppendixA.Notices..........91

Electronicemissionsnotices.........92

Trademarks................92

AppendixB.Abbreviationtable....93

iiHardwareMaintenanceManual

Aboutthismanual

ThismanualcontainsserviceandreferenceinformationforthefollowingThinkPad

®

products.

ThinkPadYoga14

Machinetype(MT)20DMand20DN

Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblems.

Important:ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithThinkPad

products.Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblemseffectively.

BeforeservicingaThinkPadproduct,besuretoreadalltheinformationunderChapter1“Safetyinformation”

onpage1

andChapter2“Importantserviceinformation”onpage19.

©CopyrightLenovo2014

iii

ivHardwareMaintenanceManual

Chapter1.Safetyinformation

Thischapterpresentsfollowingsafetyinformationthatyouneedtobefamiliarwithbeforeyouservicea

ThinkPadnotebookcomputer.

•“Generalsafety”onpage1

•“Electricalsafety”onpage1

•“Safetyinspectionguide”onpage2

•“Handlingdevicesthataresensitivetoelectrostaticdischarge”onpage3

•“Groundingrequirements”onpage4

•“Safetynotices(multilingualtranslations)”onpage4

Generalsafety

Followtheserulestoensuregeneralsafety:

•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.

•Whenliftinganyheavyobject:

1.Makesurethatyoucanstandsafelywithoutslipping.

2.Distributetheweightoftheobjectequallybetweenyourfeet.

3.Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempttolift.

4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe

musclesinyourback.Donotattempttoliftanyobjectthatweighsmorethan16kg(35lb)orthat

youthinkistooheavyforyou.

•Donotperformanyactionthatcauseshazardstothecustomer,orthatmakestheequipmentunsafe.

•Beforeyoustartthemachine,makesurethatotherservicetechniciansandthecustomer'spersonnelare

notinahazardousposition.

•Placeremovedcoversandotherpartsinasafeplace,awayfromallpersonnel,whileyouareservicing

themachine.

•Keepyourtoolcaseawayfromwalkareassothatotherpeoplewillnottripoverit.

•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Makesurethatyour

sleevesarefastenedorrolledupaboveyourelbows.Ifyourhairislong,fastenit.

•Inserttheendsofyournecktieorscarfinsideclothingorfastenitwithanonconductiveclip,about8

centimeters(3inches)fromtheend.

•Donotwearjewelry,chains,metal-frameeyeglasses,ormetalfastenersforyourclothing.

Attention:Metalobjectsaregoodelectricalconductors.

•Wearsafetyglasseswhenyouarehammering,drilling,soldering,cuttingwire,attachingsprings,using

solvents,orworkinginanyotherconditionsthatmightbehazardoustoyoureyes.

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

thatiswornordefective.

•Reinstallallcoverscorrectlybeforereturningthemachinetothecustomer.

•Fanlouversonthemachinehelptopreventoverheatingofinternalcomponents.Donotobstructfan

louversorcoverthemwithlabelsorstickers.

Electricalsafety

Observethefollowingruleswhenworkingonelectricalequipment.

Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoft

materialthatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.Manycustomershave,near

theirequipment,rubberﬂoormatsthatcontainsmallconductiveﬁberstodecreaseelectrostaticdischarges.

Donotusethistypeofmattoprotectyourselffromelectricalshock.

©CopyrightLenovo2014

1

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

accidentoccurs,youcanthenoperatetheswitchorunplugthepowercordquickly.

•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.

•Disconnectallpowerbefore:

–Performingamechanicalinspection

–Workingnearpowersupplies

–Removingorinstallingmainunits

•Beforeyoustarttoworkonthemachine,unplugthepowercord.Ifyoucannotunplugit,askthecustomer

topower-offthewallboxthatsuppliespowertothemachine,andtolockthewallboxintheoffposition.

•Ifyouneedtoworkonamachinethathasexposedelectricalcircuits,observethefollowingprecautions:

–Ensurethatanotherperson,familiarwiththepower-offcontrols,isnearyou.

Attention:Anotherpersonmustbetheretoswitchoffthepower,ifnecessary.

–Useonlyonehandwhenworkingwithpowered-onelectricalequipment;keeptheotherhandinyour

pocketorbehindyourback.

Attention:Anelectricalshockcanoccuronlywhenthereisacompletecircuit.Byobservingtheabove

rule,youmaypreventacurrentfrompassingthroughyourbody.

–Whenusingtesters,setthecontrolscorrectlyandusetheapprovedprobeleadsandaccessoriesfor

thattester.

–Standonsuitablerubbermats(obtainedlocally,ifnecessary)toinsulateyoufromgroundssuchas

metalﬂoorstripsandmachineframes.

Observethespecialsafetyprecautionswhenyouworkwithveryhighvoltages;Instructionsforthese

precautionsareinthesafetysectionsofmaintenanceinformation.Useextremecarewhenmeasuring

highvoltages.

•Regularlyinspectandmaintainyourelectricalhandtoolsforsafeoperationalcondition.

•Donotusewornorbrokentoolsandtesters.

•Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkthatithasbeenpoweredoff.

•Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesofthesehazardsaremoistﬂoors,

ungroundedpowerextensioncables,powersurges,andmissingsafetygrounds.

•Donottouchliveelectricalcircuitswiththereﬂectivesurfaceofaplasticdentalmirror.Thesurfaceis

conductive;suchtouchingcancausepersonalinjuryandmachinedamage.

•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating

placesinamachine:

–Powersupplyunits

–Pumps

–Blowersandfans

–Motorgenerators

–Partssimilartothoselistedabove

Thispracticeensurescorrectgroundingoftheunits.

•Ifanelectricalaccidentoccurs:

–Usecaution;donotbecomeavictimyourself.

–Switchoffpower.

–Sendanotherpersontogetmedicalaid.

Safetyinspectionguide

Thepurposeofthisinspectionguideistoassistyouinidentifyingpotentiallyunsafeconditions.Aseach

machinewasdesignedandbuilt,requiredsafetyitemswereinstalledtoprotectusersandservicetechnicians

frominjury.Thisguideaddressesonlythoseitems.Y oushouldusegoodjudgmenttoidentifypotential

safetyhazardsduetoattachmentofnon-ThinkPadfeaturesoroptionsnotcoveredbythisinspectionguide.

Ifanyunsafeconditionsarepresent,youmustdeterminehowserioustheapparenthazardcouldbeand

whetheryoucancontinuewithoutﬁrstcorrectingtheproblem.

2HardwareMaintenanceManual

Considertheseconditionsandthesafetyhazardstheypresent:

•Electricalhazards,especiallyprimarypower(primaryvoltageontheframecancauseseriousorfatal

electricalshock)

•Explosivehazards,suchasadamagedCRTfaceorabulgingcapacitor

•Mechanicalhazards,suchaslooseormissinghardware

Todeterminewhetherthereareanypotentiallyunsafeconditions,usethefollowingchecklistatthebeginning

ofeveryservicetask.Beginthecheckswiththepoweroff,andthepowercorddisconnected.

Checklist:

1.Checkexteriorcoversfordamage(loose,broken,orsharpedges).

2.Poweroffthecomputer.Disconnectthepowercord.

3.Checkthepowercordfor:

a.Athird-wiregroundconnectoringoodcondition.Useametertomeasurethird-wireground

continuityfor0.1ohmorlessbetweentheexternalgroundpinandtheframeground.

b.Thepowercordshouldbetheauthorizedtypespeciﬁedforyourcomputer.Goto:

http://www.lenovo.com/serviceparts-lookup

c.Insulationmustnotbefrayedorworn.

4.Checkforcrackedorbulgingbatteries.

5.Removethecover.

6.Checkforanyobviousnon-ThinkPadalterations.Usegoodjudgmentastothesafetyofany

non-ThinkPadalterations.

7.Checkinsidetheunitforanyobviousunsafeconditions,suchasmetalﬁlings,contamination,wateror

otherliquids,orsignsofﬁreorsmokedamage.

8.Checkforworn,frayed,orpinchedcables.

9.Checkthatthepower-supplycoverfasteners(screwsorrivets)havenotbeenremovedortamperedwith.

Handlingdevicesthataresensitivetoelectrostaticdischarge

Anycomputerpartcontainingtransistorsorintegratedcircuits(ICs)shouldbeconsideredsensitiveto

electrostaticdischarge(ESD.)ESDdamagecanoccurwhenthereisadifferenceinchargebetweenobjects.

ProtectagainstESDdamagebyequalizingthechargesothatthemachine,thepart,theworkmat,andthe

personhandlingthepartareallatthesamecharge.

Notes:

1.Useproduct-speciﬁcESDprocedureswhentheyexceedtherequirementsnotedhere.

2.MakesurethattheESDprotectivedevicesyouusehavebeencertiﬁed(ISO9000)asfullyeffective.

WhenhandlingESD-sensitiveparts:

•Keepthepartsinprotectivepackagesuntiltheyareinsertedintotheproduct.

•Avoidcontactwithotherpeople.

•Wearagroundedwriststrapagainstyourskintoeliminatestaticonyourbody.

•Preventthepartfromtouchingyourclothing.Mostclothingisinsulativeandretainsachargeeven

whenyouarewearingawriststrap.

•Useagroundedworkmattoprovideastatic-freeworksurface.Thematisespeciallyusefulwhen

handlingESD-sensitivedevices.

•Selectagroundingsystem,suchasthoselistedbelow,toprovideprotectionthatmeetsthespeciﬁc

servicerequirement.

Note:TheuseofagroundingsystemtoguardagainstESDdamageisdesirablebutnotnecessary.

–AttachtheESDgroundcliptoanyframeground,groundbraid,orgreen-wireground.

Chapter1.Safetyinformation3

–Whenworkingonadouble-insulatedorbattery-operatedsystem,useanESDcommongroundor

referencepoint.Y oucanusecoaxorconnector-outsideshellsonthesesystems.

–Usetheroundgroundprongoftheacplugonac-operatedcomputers.

Groundingrequirements

Electricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrectsystemfunction.Proper

groundingoftheelectricaloutletcanbeveriﬁedbyacertiﬁedelectrician.

Safetynotices(multilingualtranslations)

Thesafetynoticesinthissectionareprovidedinthefollowinglanguages:

•English

•Arabic

•BrazilianPortuguese

•French

•German

•Hebrew

•Japanese

•Korean

•Spanish

•TraditionalChinese

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Lenovo Yoga 14 Product information

Lenovo Yoga 14 Product information

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