Lenovo N42-20 User Manual

HardwareMaintenanceManual

LenovoN42–20Chromebook

HardwareMaintenanceManual

LenovoN42–20Chromebook

FirstEdition(June2016)

©CopyrightLenovo2016.

Contents

Chapter1.Safetyinformation......1

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

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

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

Handlingdevicesthataresensitivetoelectrostatic

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

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

Safetynotices(multilingualtranslations)......4

Chapter2.Generalcheckout.....19

Whattodofirst..............19

Checkingtheacpoweradapter........20

Chapter3.IdetifyingFRUs(CRUs)..21

AllFRUs(CRUs)forLenovoN42–20

Chromebook...............21

Chapter4.RemovingaFRUorCRU.25

Generalguidelines.............25

Removetheuppercase(withkeyboard).....25

Removethebatterypack..........26

Removethespeakers............27

RemovetheUSBboard...........28

RemovetheWLAN&Bluetoothcombomodule..29

RemovetheLCDmodule..........29

RemovethesystemboardandtheDC-incable..30

DisassembletheLCDmodule.........32

RemovetheLCDbezel..........32

RemovetheLCDpanel.........33

RemovethecameraassemblyortheLCD&

cameracable.............34

Removethehinges...........35

AppendixA.Lenovopartnumbersfor

replacementFRUs..........37

AppendixB.Lenovopartnumbersfor

CRUsandmiscellaneousparts....39

AppendixC.Labellocations.....43

Trademarks................xlv

©CopyrightLenovo2016

iii

ivHardwareMaintenanceManual

Chapter1.Safetyinformation

Thischapterpresentsthefollowingsafetyinformationthatyouneedtobefamiliarwithbeforeyouservicea
Lenovonotebookcomputer.

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.

•Inserttheendsofyournecktieorscarfinsideclothingorfastenitwithanon-conductiveclip,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.

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

•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.

•Disconnectallpowerbefore:
–Performingamechanicalinspection
–Workingnearpowersupplies

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–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,
non-groundedpowerextensioncables,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.Youshouldusegoodjudgmenttoidentifypotential
safetyhazardsduetoattachmentofnon-Lenovofeaturesoroptionsnotcoveredbythisinspectionguide.

Ifanyunsafeconditionsarepresent,youmustdeterminehowserioustheapparenthazardcouldbeand
whetheryoucancontinuewithoutfirstcorrectingtheproblem.

Considertheseconditionsandthesafetyhazardstheypresent:

•Electricalhazards,especiallyprimarypower(primaryvoltageontheframecancauseseriousorfatal
electricalshock)

•Explosivehazards,suchasadamagedcathoderaytube(CRT)faceorabulgingcapacitor

•Mechanicalhazards,suchaslooseormissinghardware

2HardwareMaintenanceManual

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-Lenovoalterations.Usegoodjudgmentastothesafetyofanynon-Lenovo
alterations.

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.
–Whenworkingonadouble-insulatedorbattery-operatedsystem,useanESDcommongroundor

referencepoint.Youcanusecoaxorconnector-outsideshellsonthesesystems.

–Usetheroundgroundprongoftheacplugonac-operatedcomputers.

Chapter1.Safetyinformation3

Groundingrequirements

Electricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrectsystemfunction.Proper
groundingoftheelectricaloutletcanbeverifiedbyacertifiedelectrician.

Safetynotices(multilingualtranslations)

Thesafetynoticesinthissectionareprovidedinthefollowinglanguages:

•English

•Arabic

•BrazilianPortuguese

•French

•German

•Hebrew

•Japanese

•Korean

•Spanish

•T raditionalChinese

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Chapter2.Generalcheckout

Thischaptercontainsthefollowingtopics:

Beforeyougotothecheckoutinstructions,ensurethatyoureadthefollowingimportantnotes.

Importantnotes:

•Onlycertifiedtrainedpersonnelshouldservicethecomputer.

•BeforereplacinganyFRU,readtheentirepageonremovingandreplacingFRUs.

•WhenyoureplaceFRUs,itisrecommendedtousenewnylon-coatedscrews.

•Beextremelycarefulduringsuchwriteoperationsascopying,saving,orformatting.Drivesinthecomputer
thatyouareservicingsequencemighthavebeenaltered.Ifyouselectanincorrectdrive,dataorprograms
mightbeoverwritten.

•ReplaceaFRUonlywithanotherFRUofthecorrectmodel.WhenyoureplaceaFRU,makesurethatthemodel
ofthemachineandtheFRUpartnumberarecorrectbyreferringtotheFRUpartslist.

•AFRUshouldnotbereplacedbecauseofasingle,unreproduciblefailure.Singlefailurescanoccurfora
varietyofreasonsthathavenothingtodowithahardwaredefect,suchascosmicradiation,electrostaticdischarge,
orsoftwareerrors.ConsiderreplacingaFRUonlywhenaproblemrecurs.IfyoususpectthataFRUisdefective,
cleartheerrorlogandrunthetestagain.Iftheerrordoesnotrecur ,donotreplacetheFRU.

•BecarefulnottoreplaceanondefectiveFRU.

Whattodofirst

WhenyoureturnaFRU,youmustincludethefollowinginformationinthepartsexchangeformorparts
returnformthatyouattachtoit:

1.Nameandphonenumberofservicetechnician

2.Dateofservice

3.Dateonwhichthemachinefailed

4.Dateofpurchase

5.Failuresymptoms,errorcodesappearingonthedisplay,andbeepsymptoms

6.ProcedureindexandpagenumberinwhichthefailingFRUwasdetected

7.FailingFRUnameandpartnumber

8.Machinetype,modelnumber,andserialnumber

9.Customer'snameandaddress

Note:Duringthewarrantyperiod,thecustomermayberesponsibleforrepaircostsifthecomputerdamage
wascausedbymisuse,accident,modification,unsuitablephysicaloroperatingenvironment,orimproper
maintenancebythecustomer.Followingisalistofsomecommonitemsthatarenotcoveredunderwarranty
andsomesymptomsthatmightindicatethatthesystemwassubjectedtostressbeyondnormaluse.

Beforecheckingproblemswiththecomputer,determinewhetherthedamageiscoveredunderthewarranty
byreferringtothefollowinglist:

Thefollowingarenotcoveredunderwarranty:

•LCDpanelcrackedfromtheapplicationofexcessiveforceorfrombeingdropped

•Scratched(cosmetic)parts

•Distortion,deformation,ordiscolorationofthecosmeticparts

•Plasticparts,latches,pins,orconnectorsthathavebeencrackedorbrokenbyexcessiveforce

•Damagecausedbyliquidspilledintothesystem

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•Damagecausedbytheimproperinsertionofapersonal-computercard(PCcard)ortheinstallationof
anincompatiblecard

•Improperdiscinsertionoruseofanexternalopticaldrive

•Fusesblownbyattachmentofanon-supporteddevice

•Forgottencomputerpassword(makingthecomputerunusable)

•Stickykeyscausedbyspillingaliquidontothekeyboard

•Useofanincorrectacpoweradapteronlaptopproducts

Thefollowingsymptomsmightindicatedamagecausedbynon-warrantedactivities:

•Missingpartsmightbeasymptomofunauthorizedserviceormodification.

•Checkforobviousdamagetoaharddiskdrive.Ifthespindleofaharddiskdrivebecomesnoisy,thehard
diskdrivemighthavebeendroppedorsubjecttoexcessiveforce.

Checkingtheacpoweradapter

Ifthecomputerfailsonlywhentheacpoweradapterisused,refertotheinformationinthistopictocheck
theacpoweradapter.

Ifthepower-onindicatordoesnotturnon,checkthepowercordoftheacpoweradapterforcorrect
continuityandinstallation.

Tochecktheacpoweradapter,dothefollowing:

1.Unplugtheacpoweradaptercablefromthecomputer.

2.Measuretheoutputvoltageacrosstheplugoftheacpoweradaptercable.Thecorrectvoltagesare
showninthefollowingtable.

Pin

1+20

20

Note:Theoutputvoltageacrosspin2mightdifferfromthevoltagethatyoumeasure.

3.Dependingonthevoltagethatyoumeasure,dooneofthefollowing:

•Ifthevoltageisnotcorrect,replacetheacpoweradapter.

•Ifthevoltageisacceptable,dothefollowing:

a.Replacethesystemboard.
b.Iftheproblempersists,calltheCustomerSupportCenter.

Note:Noisefromtheacpoweradapterdoesnotalwaysindicateadefect.

Voltage(Vdc)

20HardwareMaintenanceManual

Chapter3.IdetifyingFRUs(CRUs)

1

3

4

7

2

9

8

10

6

5

AllFRUs(CRUs)forLenovoN42–20Chromebook

TheexplodedillustrationshelpLenovoservicetechniciansidentifyFRUsorCRUsthattheymayneed
toreplacewhenservicingacustomer’scomputer.

RefertoAppendixA“LenovopartnumbersforreplacementFRUs”onpage37
LenovopartnumbersforaparticularFRUorCRU.

ifyouneedtolookup

Figure1.N42–20explodedview

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Table1.FRU(CRU)categories

1

4

7

4

3

6

5

2

No.

1

2

3

4

5

6

7

8

9

10

FRU(CRU)category

LCDmodule

Uppercase(withkeyboard)

Batterypack

Speakers

Heatsink

Systemboard

WLAN&Bluetoothcombomodule

DC-incable

USBboard

Basecover

Figure2.L CDmodule—explodedview

Table2.FRUcategoriesfortheLCDmodule

No.

1

2

3

FRU(CRU)category

LCDbezel

LCDbracket

LCDpanel

22HardwareMaintenanceManual

Table2.FRUcategoriesfortheLCDmodule(continued)

4

5

6

7

Hinges

LCDcable

Cameraassembly

LCDbasecover

Chapter3.IdetifyingFRUs(CRUs)23

24HardwareMaintenanceManual

Chapter4.RemovingaFRUorCRU

Generalguidelines

WhenremovingorreplacingaFRU,ensurethatyouobservethefollowinggeneralguidelines:

1.Donottrytoserviceanycomputerunlessyouhavebeentrainedandcertified.Anuntrainedpersonruns
theriskofdamagingparts.

2.BeginbyremovinganyFRUsthathavetoberemovedbeforereplacingthefailingFRU.Anysuch
FRUsarelistedatthebeginningofeachFRUreplacementprocedure.Removethemintheorderin
whichtheyarelisted.

3.FollowthecorrectsequenceinthestepsforremovingaFRU,asshownintheillustrationsbythe
numbersinsquarecallouts.

4.WhenremovingaFRU,moveitinthedirectionasshownbythearrowintheillustration.

5.T oinstallanewFRUinplace,performtheremovalprocedureinreverseandfollowanynotesthat
pertaintoreplacement.

6.WhenreplacingaFRU,carefullyretainandreuseallscrews.Ifscrewsaremissing,lookuptheLenovo
partsnumbersinAppendixB“LenovopartnumbersforCRUsandmiscellaneousparts”onpage39for
replacementscrewsandorderthemthroughtheLenovoCRMsystem.

7.Whenreplacingthebasecover,reapplyalllabelsthatcomewiththereplacementbasecover.Ifsome
originallabelsarenotincludedwiththereplacementbasecover,pealthemofffromtheoriginalbase
coverandpastethemonthereplacementbasecover.RefertoAppendixC“Labellocations”onpage
43forthelayoutoflabelsonthebacksideofthebasecover.

DANGER

BeforeremovinganyFRUorCRU,shutdownthecomputerandunplugallpowercordsfrom
electricaloutlets.

Attention:AfterreplacingaFRU,donotturnonthecomputeruntilyouhaveensuredthatallscrews,springs,

andothersmallpartsareinplaceandnonearelooseinsidethecomputer.Verifythisbyshakingthecomputer
gentlyandlisteningforrattlingsounds.Metallicpartsormetalflakescancauseelectricalshortcircuits.

Attention:ThesystemboardissensitivetoandcanbedamagedbyESD.Beforetouchingit,establish
personalgroundingbytouchingagroundpointwithonehandorbyusinganESDstrap(P/N6405959).

Removetheuppercase(withkeyboard)

Step1.Prythefourrubbersoutoftheirrecesses.

Figure3.Pryrubbersoutofrecesses

Step2.Removethescrews.

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Figure4.Remove10screws

Table3.Screwspecifications

Screw
location

onbase
cover

Number

10

Specifications

M2.5×6.0mm,flat-head,nylon-coated

Torque

2.5+/-0.2kgf*cm

Step3.TurnovertheChromebookandopentheLCDcoverto180degrees.

Step4.Useaprybartoslidethroughthegroovesbetweentheuppercaseandthebasecover;slowlylift

theuppercaseuntilthekeyboardsocketandthetouchpadsocketappear.

Attention:Donotpulluptheuppercasebeforedetachingthekeyboardandtouchpadcables.
Otherwisethecablesmaybedamaged.

Figure5.Lifttheuppercase

Step5.Openthekeyboardandtouchpadsockets,detachthecables,andpulluptheuppercase.

RefertoTable12“PartnumbersforFRUs(CRUs)”onpage37tolookuptheLenovopartnumbersforthe
followingreplacementparts:

Uppercase

Footrubberpack

Removethebatterypack

MakesurethefollowingFRUs(orCRUs)havebeenremoved.

“Removetheuppercase(withkeyboard)”onpage25

26HardwareMaintenanceManual

Step1.Unplugthebatterycablefromthesystemboardandtakethecableoutofthecableguiders.

Attention:Useyourfingernailtopulltheconnectortounplugit.Donotpullthecableitself.

Step2.Removethescrewsandtakeoutthebatterypack.

Figure6.Removescrewsandtakeoutthebatterypack

Table4.Screwspecifications

Screw
location

Batterypack
tobase
cover

Number

3

Specifications

M2×3mm,flat-head,nylon-coated

Torque

1.85+/-

0.15kgf*cm

RefertoTable12“PartnumbersforFRUs(CRUs)”onpage37tolookuptheLenovopartnumbersofthe
followingreplacementparts:

Batterypack

Removethespeakers

MakesurethefollowingFRUs(CRUs)havebeenremoved.

“Removetheuppercase(withkeyboard)”onpage25

“Removethebatterypack”onpage26

Step1.Unplugthespeakers’cablefromthesystemboard.

Figure7.Unplugthespeakers’cablefromthesystemboard

Chapter4.RemovingaFRUorCRU27

Step2.Carefullyremovethespeakersoffthepiles.

a

b

RefertoTable12“PartnumbersforFRUs(CRUs)”onpage37tolookuptheLenovopartnumbersof
replacementspeakers.

RemovetheUSBboard

MakesurethefollowingFRUs(CRUs)havebeenremoved:

“Removetheuppercase(withkeyboard)”onpage25

“Removethebatterypack”onpage26

“Removethespeakers”onpage27

Step1.OpenthetwosocketsandthenremovethecablethatconnectstheUSBboardtothesystemboard.

Figure8.Removethecable

Step2.RemoveonescrewandthenremovetheUSBboard.

Table5.Screwspecifications

Screw
location

USBboard
tobase
cover

Number

1

Specifications

M2×3mm,flat-head,nylon-coated

Torque

1.85+/-

0.15kgf-cm

RefertoTable12“PartnumbersforFRUs(CRUs)”onpage37tolookuptheLenovopartnumbersof
replacementUSBboard.

28HardwareMaintenanceManual

RemovetheWLAN&Bluetoothcombomodule

a

a

c

MakesurethefollowingFRUs(CRUs)havebeenremovedandthebatteryconnectorhasbeendetached.

“Removetheuppercase(withkeyboard)”onpage25

Step1.DisconnectthewhiteandblackcablesfromtheWLAN&Bluetoothcombomodule.

Figure9.Disconnectantennacables

Step2.Removethescrew.

Table6.Screwspecifications—removingtheWLAN&Bluetoothcombomodule

Screw
location

WLAN&Bluetooth
combocard
tobase
cover

Number

1

SpecificationsColor

M2×3mm,flat-head,nylon-coated

Black

Torque

1.85+/-

0.15kgf-cm

Step3.PullouttheWLAN&Bluetoothcombomoduleinthedirectionshownbythearrow3.

Figure10.PullouttheWLAN&Bluetoothcombomodule

RefertoTable12“PartnumbersforFRUs(CRUs)”onpage37tolookuptheLenovopartnumbersof
replacementWLAN&Bluetoothcombomodules.

RemovetheLCDmodule

MakesurethefollowingFRUs(CRUs)havebeenremovedandthebatteryconnectorhasbeendetached.

“Removetheuppercase(withkeyboard)”onpage25

“RemovetheWLAN&Bluetoothcombomodule”onpage29

Chapter4.RemovingaFRUorCRU29

Step1.UnplugtheLCDcable.

c c

c

c

Figure11.Remove4screws

Step2.Removethescrews.

Step3.LiftuptheLCDmoduletodetachitfromthebasecover.

Table7.Screwspecifications—removingtheLCDmodule

Screw
location

LCDto
base
cover

Number

4

Specifications

M2.5×54mm,flat-head,nylon-coated

Torque

2.5+/-0.2kgf*cm

TheLCDmoduleisnotaFRU.Instead,itcontainsFRUsasitscomponents.Referto“DisassembletheLCD
module”onpage32ifyouneedtoreplaceaFRUcontainedintheLCDmodule.

RemovethesystemboardandtheDC-incable

“Removetheuppercase(withkeyboard)”onpage25

“Removethebatterypack”onpage26

“Removethespeakers”onpage27

“RemovetheUSBboard”onpage28

“RemovetheWLAN&Bluetoothcombomodule”onpage29

“RemovetheLCDmodule”onpage29

Step1.UnplugtheDC-incable.

30HardwareMaintenanceManual

a

Figure12.UnplugtheDC-incable

d

d

d

d

d

d

d

Step2.Removethescrewsandtakeoutthesystemboard.

Table8.Screwspecifications—removingtheLCDmodule

Screw
location

Screw
used
for

system

7
board
to
base
cover

Figure13.Removethesystemboard

Step3.RemovetheDC-incable.

SpecificationsColor

M2×3mm,flat-head,nylon-coated

Torque

Black

1.85+/-

0.15kgf-cm

Chapter4.RemovingaFRUorCRU31

Figure14.RemovetheDC-incable

RefertoTable12“PartnumbersforFRUs(CRUs)”onpage37tolookuptheLenovopartnumbersofthe
followingreplacementparts:

Systemboard

DC-incable

Basecover

DisassembletheLCDmodule

TheLCDmoduleasawholeisnotaFRU.Instead,itcontainsFRUsasitscomponents.Beforedisassembling
theLCDmodule,makesureithasbeendetachedfromthebasecover.Referto“RemovetheLCDmodule”
onpage29forinstructions.

RemovetheLCDbezel

Step1.PrythetworubbersofftheLCDbezel1.

Figure15.Prythetworubbers

Step2.Removethetwoscrews2.

Figure16.Remove2screws

Table9.Screwspecifications—removingtheLCDbezel

Screwlocation

LCDbezelto
LCDbasecover

Number

2

SpecificationsColor

M2.5×4.0mm,flat-head,nylon-coated

Torque

Black

2.5+/-

0.2kgf*cm

32HardwareMaintenanceManual

Step3.InsertyourfingernailsunderoneinnersideoftheLCDbezelandtheLCDpanelandthencarefully

pulltheLCDbezeloutwards.RepeatthisactionalongtheinneredgesoftheLCDbezeluntilall
hooksthatsecuretheLCDbezelaredetached

Figure17.RemovetheLCDbezel

3.

Attention:DonotpulltheLCDbezelfromtheoutersideoftheLCDbezel,otherwisethehooks
maybedamaged.

Step4.RemovetheLCDbezel.

RefertoTable13“PartnumbersforLCDFRUs”onpage38tolookuptheLenovopartnumbersforthe
replacementLCDbezel.

RemovetheLCDpanel

MakesurethefollowingFRUs(orCRUs)havebeenremoved.

“RemovetheLCDbezel”onpage32

Step1.Removethefourscrews1;withthebottomedgeasanaxis,liftupthetopedgeoftheLCD

panel

Attention:DonotremovetheLCDpanelatthisstep.TheLCDpanelisconnectedbyacableat
thebackside.DetachthecablebeforeremovingtheLCDpanel.

2.

Chapter4.RemovingaFRUorCRU33

a

a

a

a

Figure18.Remove4screwsandliftuptheLCDpanel

c

Table10.Screwspecifications—removingtheLCDpanel

Screw
location

LCD
panel
tobase
cover

Number

4

Specifications

M2×3mm,flat-head,nylon-coated

Torque

1.8+/-0.15kgf*cm

Step2.CheckthebacksideoftheLCDpanelfortheLCDconnectorandthenunplugtheLCDcable3.

Figure19.DisconnecttheL CDcablefromthebackoftheLCDpanel

Step3.RemovetheLCDpanel.

RefertoT able13“PartnumbersforLCDFRUs”onpage38tolookuptheLenovopartnumbersfor
replacementLCDpanels.

RemovethecameraassemblyortheLCD&cameracable

MakesurethefollowingFRUs(orCRUs)havebeenremoved.

“RemovetheLCDbezel”onpage32

“RemovetheLCDpanel”onpage33

Step1.Disconnectthecameracable.

34HardwareMaintenanceManual

Figure20.Unplugcameracable

Step2.Removethecamera.

RefertoT able13“PartnumbersforLCDFRUs”onpage38tolookuptheLenovopartnumbersfor
replacementpartsfor:

Cameraassembly

LCD&cameracable

Removethehinges

MakesurethefollowingFRUs(orCRUs)havebeenremoved.

“RemovetheLCDbezel”onpage32

“RemovetheLCDpanel”onpage33

Step1.Removethescrews.

Figure21.Removethescrews

Table11.Screwspecifications—removingthehingesandtheWLANantennas

Screw
location

hinges
toLCD
base
cover

Number

4

Specifications

M2.5×4mm,flat-head,nylon-coated

Torque

2.5+/-0.2kgf*cm

Step2.Removethehinges.

RefertoAppendixA“LenovopartnumbersforreplacementFRUs”onpage37tolookuptheLenovopart
numbersforthereplacementhinges.

Chapter4.RemovingaFRUorCRU35

36HardwareMaintenanceManual

AppendixA.LenovopartnumbersforreplacementFRUs

Whenservicingacustomer’scomputer,Lenovoservicetechniciansmayusepartnumberslistedinthe
followingtablestoorderreplacementpartsthroughLenovoCRM(customerrelationshipmanagement)
system.

Table12.PartnumbersforFRUs(CRUs)

No.

FRU(CRU)category

2

Footrubberpack

3

Uppercase(withkeyboard)

4

Batterypack

5

Speakers

6

Heatsink

7

Systemboard

PartsdescriptionLenovopartnumber

FootQ80USUP+DOWN

UpperCaseQ80USW/T ouchpad/KBUS5CB0L85364

UpperCaseQ80USW/T ouchpad/KBFRA5CB0L85351

UpperCaseQ80USW/T ouchpad/KBE_FRA5CB0M14127

TeslaSP/AL15M3PB111.1V45Wh3cellbty

TeslaSP/CL15M3PB111.1V45Wh3cellbty

TeslaLGL15L3PB111.1V45Wh3cellbty

SpeakerQ80USL+R5SB0L85356

HeatsinkQ80USW/OF AN

MBQ80VHN30504G16GUMA

MBQ80VHN30504G32GUMA

MBQ80VHN30604G16GUMA

MBQ80VHN30604G32GUMA

MBQ80VHN30502G16GUMA

MBQ80VHN30502G32GUMA

MBQ80VHN30602G16GUMA

MBQ80VHN30602G32GUMA

MBQ80VHN31602G16GUMA

MBQ80VHN31602G32GUMA

MBQ80VHN31604G16GUMA

MBQ80VHN31604G32GUMA

MBQ80VHN37102G16GUMA

MBQ80VHN37102G32GUMA

MBQ80VHN37104G16GUMA

MBQ80VHN37104G32GUMA

5F40M09669

5B10K88047

5B10K88048

5B10K88049

5H40M09667

5B20L85300

5B20L85308

5B20L85301

5B20L85297

5B20L85296

5B20L85302

5B20L85310

5B20L85303

5B20L85298

5B20L85309

5B20L85305

5B20L85304

5B20L85295

5B20L85306

5B20L85311

5B20L85307

©CopyrightLenovo2016

37

Table12.PartnumbersforFRUs(CRUs)(continued)

8

WLAN&Bluetoothcombo
module

Intel72652x2AC+BTPCIEM.2WLANSW10H24548

9

DC-incable

DC-INCableQ80US5C10M14090

10

USBboard

USBBoardQ80USW/Cable5C50L85365

11

Lowercase

LowerCoverQ80USBLACK5CB0L85357

Note:RefertoAppendixB“LenovopartnumbersforCRUsandmiscellaneousparts”onpage39tolook
uptheLenovopartnumbersofacpoweradaptersandpowercords.

Table13.PartnumbersforL CDFRUs

No.

FRU(CRU)categorySparepartsdescription

1

LCDbezel

2

LCDpanel

3

Hinges

4

LCDcable

5

Cameraassembly

6

LCDbasecover

LCDBezelQ80USBLACK

AUOB140XTN02.EHW0AHDAGSNB5D10G95364

INN140BGA-EA3HDTAGSNB

BONT140WHM-N41HDTAGSNB

HingeQ80USL+R

LCDCableQ80US5C10L85362

CameraQ80us2MIC5C20L85359

LCDCoverQ80USBLKW/Antenna5CB0L85353

Lenovopartnumber

5B30L85352

5D10K85755

5D10K81099

5H50L85358

38HardwareMaintenanceManual

AppendixB.LenovopartnumbersforCRUsandmiscellaneous parts

ThepowercordsandacadaptersareCRUs.

Table14.PartnumbersforFRUs(CRUs)

CRUcategory

Screwpack

acpoweradapter

Powercord

PartsdescriptionLenovopartnumber

ScrewPackQ80USSCREWKIT5S10M09666

ChiconyADLX45NCC3A20V2.25AadapRSA10L02297

AcbelADLX45NAC3A20V2.25AadapRSA10L02298

LINETEKPC323+RVV300/300+LS151米电源线

LINETEKLS15+H03VV-F+LP391米电源线

LINETEKLS15+H03VV-F+LP-381米电源线

LINETEKLS15+H03VV-F+LP-371米电源线

LINETEKLS15H03VV-FLP26A1米电源线

LINETEKLS15+H03VV-F+LP-411米电源线

LINETEKLP-30B+SPT -2+LS151米电源线

LINETEKLP-61L+H03VV-F+LS151米电源线

LINETEKPE-361+H05VV-F+LS151米电源线

LINETEKLS15+H03VV-F+PE-3361米电源线

LINETEKLS15+H05VV-F+LP-E04A1米电源线

LINETEKLS15+H03VV-F+LP-23A1米电源线

LINETEKLS15+VCTF+LP-531米电源线

LINETEKLS15+VCTF+LP-541米电源线

LINETEKLS15+H03VV-F+PE-3641米电源线

LINETEKLP-34+H03VV-F+LS151米电源线

LongwellLSG-31+RVV300/300+LS-181米电源线

LongwellLP-24+H03VV-F+LS-181米电源线

LongwellLP-40+H03VV-F+LS-181米电源线

LongwellLP-37+H03VV-F+LS-181米电源线

LongwellLP-46+H03VV-F+LS-181米电源线

LongwellLP-41+H03VV-F+LS-181米电源线

LongwellLP-30B+SPT-218AWG+LS-181米电源线

LongwellLP-61L+H03VV-F+LS-181米电源线

LongwellLP-67+BIS+LS-181米电源线

145000600

145000599

145000598

145000597

145000596

145000595

145000594

145000593

145000592

145000591

145000590

145000589

145000588

145000587

145000586

145000585

145000568

145000567

145000566

145000565

145000564

145000563

145000562

145000561

145000560

©CopyrightLenovo2016

39

Table14.PartnumbersforFRUs(CRUs)(continued)

LongwellLP-22+H03VV-F+LS-181米电源线

LongwellLP-486+KTLH03VV-F+LS-51米电源线

LongwellLP-23A+LFC-3R+LS-181米电源线

LongwellLP-71+VCTF+LS-331米电源线

LongwellLP-54+VCTF+LS-181米电源线

LongwellLP-39+H03VV-F+LS-181米电源线

LongwellLP-34A+H03VV-F+LS-181米电源线

VOLEXGB10S3+RVV300/500+VAC5S1米电源线

VolexUS15S3+SPT-2＋VAC5S1米电源线

VOLEXMP5004+H03VV-F+VAC5S1米电源线

VOLEXMP232+H03VV-F+VAC5S1米电源线

VOLEXIT10S3+HO3VV-F+VAC5S1米电源线

VOLEXMP233D+H03VV-F+VAC5S1米电源线

VOLEXM2511+KETIIEC+VAC5S1米电源线

VOLEXAU10S3+H03VV-F+VAC5S1米电源线

VOLEXTW15CS3+VCTF+VAC5S1米电源线

VOLEXVAC5S+VCTF+M7551米电源线

VOLEXVA2073+H03VV-F+VAC5S1米电源线

VOLEXCH10S3+H03VV-F+VAC5S1米电源线

VOLEXSI16S3+H03VV-F+VAC5S1米电源线

VOLEXM2511+HO3VV-F+VAC5S1米电源线

lux0036+RVV300/3000.75/3C+00021米电源线

lux0040+H03VV-F0.75/3C+00111米电源线

lux0048+H03VV-F0.75/3C+00111米电源线

lux0027+H03VV-F0.75/3C+00111米电源线

lux0034+H03VV-F0.75/3C+00111米电源线

lux0041+H03VV-F0.75/3C+00111米电源线

lux0014+SPT -260℃18/3C+00161米电源线

lux0014+H03VV-F0.75/3C+00111米电源线

lux0031+H03VV-F0.75/3C+00111米电源线

lux0046+IS6940.75/3C+00111米电源线

lux0029+H03VV-F0.75/3C+00111米电源线

lux0033+H03VV-F0.75/3C+00111米电源线

lux0038+H03VV-F0.75/3C+00111米电源线

lux0019+VCTF0.75/3C+00211米电源线

lux0018(E)+VCTF0.75/3C+00211米电源线

145000559

145000558

145000557

145000556

145000555

145000554

145000553

145000538

145000537

145000605

145000524

145000535

145000534

145000533

145000532

145000531

145000530

145000528

145000527

145000526

145000525

145500003

145500015

145500014

145500013

145500011

145500012

145500002

5L60J33143

145500000

145500004

145500009

145500008

145500006

145500007

145500005

40HardwareMaintenanceManual

Table14.PartnumbersforFRUs(CRUs)(continued)

lux0044+H03VV-F0.75/3C+00111米电源线

lux0033+H03VV-F0.75/3C+00111米电源线

145500010

145500001

AppendixB.LenovopartnumbersforCRUsandmiscellaneousparts41

42HardwareMaintenanceManual

AppendixC.Labellocations

a

d ecb

Figure22.Labellayoutonthebacksideofthebasecover

Labelsattachedtothebasecoverarecountry/regionspecific.Makesuretoapplytheappropriatelabelsto
thereplacementbasecover.

Table15.Allbasecoverlabels

LabelLabeldescription

a

b

c

d

e

Labeldimensions

Ratinglabelandrating(print)label

MalaysiaSIRIMlabel

KoreaKCClabel

Appliedcountry/region

all109mmx24mm

Malaysia15mmx10mm

Korea35mmx12mm

IndonesiaWLANlabelIndonesia32mmx10mm

IndonesiaratinglabelIndonesia32mmx10mm

IsraellabelIsrael32mmx10mm

©CopyrightLenovo2016

43

44HardwareMaintenanceManual

Trademarks

Lenovoandthe“lenovo”logoaretrademarksofLenovointheUnitedStates,othercountriesorboth:

Othercompany,product,orservicenamesmaybetrademarksorservicemarksofothers.