Lenovo ThinkPad 11e Chromebook 3rd Gen, ThinkPad Yoga 11e Chromebook 3rd Gen Hardware Maintenance Manual [en, ar, cs, da, de, es, fi, fr, he, id, it, ko, nb, nl, pl, pt, ro, ru, th, uk, zc, zh]

HardwareMaintenanceManual

ThinkPad11eChromebookandThinkPadYoga11eChromebook

Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadthegeneralinformation
underAppendixA“Notices”onpage77.

SecondEdition(August2014)

©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

Powermanagement............19

Symptom-to-FRUindex...........19

LCD-relatedsymptoms.........20

Intermittentproblems..........20

Undeterminedproblems.........21

OverviewoftheChromebookUSBrepairshim..21

Creatingtherepairshim.........22

Removingandreinstallingthewrite-protect

screw................22

Usingtherepairshim..........23

Factorytestitems............24

StrategyforreplacingFRUs.........25

Importantnoticeforreplacingasystem

board................25

Howtouseerrormessage........25

StrategyforreplacingFRUsforCTO,special-bid,

andstandardmodels............25

Productdefinition............25

FRUidentification............26

Chapter3.Generalcheckout.....27

Whattodofirst..............27

Powersystemcheckout...........28

Checkingtheacpoweradapter......28

Checkingthebatteryandoperational

charging...............29

Chapter4.Locations.........31

Locatingcomputercontrols,connectors,and

indicators.................31

Frontview...............31

Left-sideview.............33

Bottomview..............33

LocatingFRUsandCRUs..........34

MajorFRUs..............35

LCDFRUs..............37

MiscellaneouspartsandotherFRUs....40

LookingupFRUinformation.........40

Chapter5.FRUreplacement

notices................41

Commonservicetools...........41

Screwnotices...............41

Hardwareidentity.............42

PrerequisiteforreplacingaFRU........42

Chapter6.Removingorreplacinga

FRU..................45

Generalguidelines.............45

Disablingthebuilt-inbattery.........46

1010Bottomcover.............46

1020Battery...............47

1030Harddiskdrivebracket.........49

1040WirelessLANcard...........50

1050Keyboard..............51

1060Keyboardbezelassembly,speakerassembly,

media-card-readerboard..........52

1070BracketfordummyEthernetconnector,
bracketforUSBconnector,bracketfordc-in
connector,dc-inconnector,systemboard

assembly,andthermalfan..........57

1080LCDunit...............60

RemovinganLCDFRUformodelswithouttouch

panel..................62

2010LCDbezelassembly........62

2020LCDpanel............63

2030Camera/microphoneboard......64

2040Antennakit,hinges,LCDcable,andLED

cableassembly............65

RemovinganLCDFRUformodelswithtouch

panel..................68

3010LCDpanelassembly........68

3020Camera/microphoneboardandsensor

board................70

3030Antennakit,hinges,LCDcable,andLED

cableassembly............72

AppendixA.Notices..........77

Electronicemissionsnotices.........78

Trademarks................78

©CopyrightLenovo2014

i

iiHardwareMaintenanceManual

Aboutthismanual

ThismanualcontainsserviceandreferenceinformationforthefollowingThinkPad

ThinkPad11eChromebook
andThinkPadY oga

®

11e

Machinetypes(MT)20DBand20DU

®

products.

Chromebook

Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblems.

Important:ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithThinkPad
products.Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblemseffectively.
BeforeservicingaThinkPadproduct,besuretoreadalltheinformationunderChapter1“Safetyinformation”
onpage1andChapter2“Importantserviceinformation”onpage19.

©CopyrightLenovo2014

iii

ivHardwareMaintenanceManual

Chapter1.Safetyinformation

Thischapterpresentsfollowingsafetyinformationthatyoumustbefamiliarwithbeforeyouservicea
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.

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

•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.

•Disconnectallpowerbefore:
–Performingamechanicalinspection
–Workingnearpowersupplies
–Removingorinstallingmainunits

•Beforeyoustarttoworkonthemachine,unplugthepowercord.Ifyoucannotunplugit,askthecustomer
topower-offthewallboxthatsuppliespowertothemachine,andtolockthewallboxintheoffposition.

•Ifyouhavetoworkonamachinethathasexposedelectricalcircuits,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,
nongroundedpowerextensioncables,powersurges,andmissingsafetygrounds.

•Donottouchliveelectricalcircuitswiththereflectivesurfaceofaplasticdentalmirror.Thesurfaceis
conductive;suchtouchingcancausepersonalinjuryandmachinedamage.

•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating
placesinamachine:
–Powersupplyunits
–Pumps
–Blowersandfans
–Motorgenerators
–Similarunitsaslistedabove
Thispracticeensurescorrectgroundingoftheunits.

•Ifanelectricalaccidentoccurs:
–Usecaution;donotbecomeavictimyourself.
–Switchoffpower.
–Sendanotherpersontogetmedicalaid.

Safetyinspectionguide

Thepurposeofthisinspectionguideistoassistyouinidentifyingpotentiallyunsafeconditions.Aseach
machinewasdesignedandbuilt,requiredsafetyitemswereinstalledtoprotectusersandservicetechnicians
frominjury.Thisguideaddressesonlythoseitems.Y oushouldusegoodjudgmenttoidentifypotential
safetyhazardsduetoattachmentofnon-ThinkPadfeaturesoroptionsnotcoveredbythisinspectionguide.

Ifanyunsafeconditionsarepresent,youmustdeterminehowserioustheapparenthazardcouldbeand
whetheryoucancontinuewithoutfirstcorrectingtheproblem.

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Considertheseconditionsandthesafetyhazardstheypresent:

•Electricalhazards,especiallyprimarypower(primaryvoltageontheframecancauseseriousorfatal
electricalshock)

•Explosivehazards,suchasadamagedbatteryorabulgingcapacitor

•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

•T raditionalChinese

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Chapter2.Importantserviceinformation

Thischapterintroducesfollowingimportantserviceinformationthatappliestoallmachinetypessupported
bythismanual:

•“StrategyforreplacingFRUs”onpage25
–“Importantnoticeforreplacingasystemboard”onpage25
–“Howtouseerrormessage”onpage25

•“StrategyforreplacingFRUsforCTO,special-bid,andstandardmodels”onpage25
–“Productdefinition”onpage25
–“FRUidentification”onpage26

Important:

•AdvisecustomerstovisittheLenovo
softwarefixes,downloadthedrivers,andfollowtheon-screeninstructionstoinstallthedrivers.For
additionalassistance,customersmightcalltheLenovoCustomerSupportCenter.T elephonenumbersfor
theLenovoSupportCenterareavailableat:
http://www.lenovo.com/support/phone

•ServicetrainingdocumentsforLenovoauthorizedservicetechniciansareavailableatthefollowingWeb
site.ThedisassemblyandreassemblyvideosthatshowtheFRUremovalandreplacementprocedures
arecontainedinthedocuments.
http://www.lenovoservicetraining.com

®

SupportWebsiteathttp://www.lenovo.com/supporttoviewthe

Powermanagement

Toreducepowerconsumption,putthecomputerintosleepmodeifyoudonotuseit.

Whenthecomputerenterssleepmode,thefollowingeventsoccur:

•TheLCDispoweredoff.

•Themicroprocessorstops.

Toentersleepmode,closethelidifyouareloggedin.Toresumefromsleepmode,openthecomputer
lidandpressanykey.

Note:Ifyouarenotloggedin,closingthelidwillshutdownthecomputer.

Incertaincircumstances,thecomputergoesintosleepmodeautomatically:

•Afteraperiodofinactivity

•Whenthebatteryindicatorblinksorange,indicatingthatthebatterypowerislow

Note:Thecomputerdoesnotacceptanyinputimmediatelyafteritenterssleepmode.Waitafewseconds
beforetakinganyactiontoreenteroperationmode.

Also,ineitherofthefollowingevents,thecomputerautomaticallyreturnsfromsleepmodeandresumes
operation:

Symptom-to-FRUindex

Thissectioncontainsfollowinginformation:

•“LCD-relatedsymptoms”onpage20

•“Intermittentproblems”onpage20

•“Undeterminedproblems”onpage21

©CopyrightLenovo2014

19

Thesymptom-to-FRUindexinthissectionlistssymptomsanderrorsandtheirpossiblecauses.Themost
likelycauseislistedfirst,inboldfacetype.

Note:DotheFRUreplacementorotheractionsinthesequenceshowninthecolumnheaded“FRUor
action,insequence. ”IfreplacingaFRUdoesnotsolvetheproblem,puttheoriginalpartbackinthe
computer.DonotreplaceanondefectiveFRU.

Thisindexcanalsohelpyoudetermine,duringregularservicing,whatFRUsarelikelytoneedtobe
replacednext.

AnumericerrorisdisplayedforeacherrordetectedinPOSTorsystemoperation.Inthedisplays,ncan
beanynumber.

Ifnonumericcodeisdisplayed,checkthenarrativedescriptionsofsymptoms.Ifthesymptomisnot
describedthere,goto“Intermittentproblems”onpage20.

Note:ForadevicenotsupportedbydiagnosticcodesintheThinkPadnotebookcomputers,seethe
manualforthatdevice.

LCD-relatedsymptoms

Important:TheTFTLCDforthenotebookcomputercontainsmanythin-filmtransistors(TFTs).The

presenceofasmallnumberofdotsthataremissing,discolored,oralwayslightedischaracteristicofTFT
LCDtechnology,butexcessivepixelproblemscancauseviewingconcerns.IftheLCDyouareservicinghas
twoorlessvisibledefectivepixels,itshouldnotbeconsideredfaulty.However,iftheLCDhasthreeormore
visibledefectivepixels,itwillbedeemedasdefectivebyLenovoanditshouldbereplaced.

Notes:

•ThispolicyappliestoallThinkPadnotebookspurchasedon1January,2008orlater.

•LenovowillnotprovidereplacementiftheLCDiswithinspecificationaswecannotguaranteethat
anyreplacementLCDwillhavezeropixeldefects.

•OnepixelconsistsofR,G,Bsub-pixels.

Table1.LCD-relatedsymptoms

Symptomorerror

Nobeep,system-statusindicatoron,andablankLCD
duringPOST.

•LCDbacklightnotworking.

•LCDtoodark.

•LCDbrightnesscannotbeadjusted.

•LCDcontrastcannotbeadjusted.

•LCDscreenunreadable.

•Charactersmissingpixels.

•Screenabnormal.

•Wrongcolordisplayed.

HorizontalorverticallinesdisplayedonLCD.LCDassembly

FRUoraction,insequence

Systemboard

1.ReseattheLCDconnectors.

2.LCDassembly

3.Systemboard

1.Seeimportantnotefor“LCD-relatedsymptoms.”

2.ReseatallLCDconnectors.

3.LCDassembly

4.Systemboard

Intermittentproblems

Intermittentsystemhangproblemscanbeduetoavarietyofcausesthathavenothingtodowithahardware
defect,suchascosmicradiation,electrostaticdischarge,orsoftwareerrors.FRUreplacementshouldbe
consideredonlywhenaproblemrecurs.

Whenanalyzinganintermittentproblem,dothefollowing:

20HardwareMaintenanceManual