Lenovo ThinkPad L440, ThinkPad L540 Hardware Maintenance Manual [en, ar, bg, cs, da, de, el, es, fi, fr, he, hr, hu, id, it, ko, nb, nl, pl, pt, pt, ro, ru, sk, sl, sr, sv, tr, uk, zc, zh]

HardwareMaintenanceManual

ThinkPadL440andL540

Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadthegeneralinformation

underAppendixA“Notices”onpage131.

SixthEdition(January2017)

©CopyrightLenovo2013,2017.

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

Contents

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

Chapter1.Safetyinformation......1

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

Electricalsafety...............2

Safetyinspectionguide............3

Handlingdevicesthataresensitivetoelectrostatic

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

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

Safetynotices(multilingualtranslations)......4

Lasercompliancestatement(multilingual

translations)................19

Chapter2.Importantservice

information..............25

StrategyforreplacingFRUs.........25

Strategyforreplacingaharddiskdrive,a solid-statedrive,oranM.2solid-statedrive.26

Importantnoticeforreplacingasystem

board................26

Howtouseerrormessage........26

StrategyforreplacingFRUsforCTO,special-bid,

andstandardmodels............26

Productdeﬁnition............26

FRUidentiﬁcation...........27

Chapter3.Generalcheckout.....29

Whattodoﬁrst..............29

Checkoutguide..............30

LenovoSolutionCenter.........30

Quicktestprograms...........30

UEFIdiagnosticprogram.........31

Bootablediagnosticprograms.......31

Powersystemcheckout...........32

Checkingtheacpoweradapter......33

Checkingoperationalcharging......33

Checkingthebatterypack........33

Checkingthecoin-cellbattery.......34

Chapter4.Relatedservice

information..............35

Restoringthefactorycontentsbyusingthe

RecoveryDiscSet.............35

UsingtheWindowsrecoveryprogramsonthe Windows8andWindows8.1operatingsystem..36

Refreshingyourcomputer........36

Resettingyourcomputertothefactorydefault

settings................36

Usingtheadvancedstartupoptions....37

RecoveringyouroperatingsystemifWindows

8orWindows8.1failstostart.......37

Creatingandusingrecoverymedia.....37

RecoveryoverviewfortheWindows10operating

system..................39

Resettingyourcomputer.........39

Usingadvancedstartupoptions......39

RecoveringyouroperatingsystemifWindows

10failstostart.............39

CreatingandusingarecoveryUSBdrive..40

Passwords................40

Power-onpassword...........41

Hard-diskpassword...........41

Supervisorpassword..........41

Howtoremovethepower-onpassword...41 Howtoremovethehard-diskpassword...42

Powermanagement............42

Screenblankmode(fortheWindows7

operatingsystemonly)..........42

Sleepmode..............42

Hibernationmode...........43

Symptom-to-FRUindex...........43

Numericerrorcodes..........44

Errormessages............45

Beeperrors..............46

LCD-relatedsymptoms.........46

Intermittentproblems..........47

Undeterminedproblems.........47

Chapter5.Statusindicators.....49

Chapter6.Fnkeycombinations...51

Chapter7.Locations.........53

Locatingcomputercontrols,connectors,and

indicators.................53

ThinkPadL440overview.........53

ThinkPadL540overview.........55

LocatingFRUsandCRUs..........56

MajorFRUsandCRUs..........58

LCDFRUsandCRUs..........60

MiscellaneouskitsandotherFRUs.....61

LookingupFRUinformation.......62

Chapter8.FRUreplacement

notices................63

Screwnotices...............63

Retainingserialnumbers...........64

©CopyrightLenovo2013,2017

Restoringtheserialnumberofthesystem

unit.................64

RetainingtheUUID...........65

ReadingorwritingtheECAinformation...65

Chapter9.Removingorreplacinga

FRU..................67

Beforeservicingthecomputer........68

1010Batterypack.............68

1020Bottomdoor.............69

1030Opticaldrive.............70

1040Harddiskdriveorsolid-statedrive....72

1050Memorymodule............73

1060WWANcardorM.2solid-statedrive....74

1070WLANcard..............76

1080Coin-cellbattery............77

1090Thermal-fanassembly.........78

1100Keyboard..............82

1110Keyboardbezelassembly,ﬁngerprintreader,

andpowerbuttoncard...........92

1120Smartcardreader,smartcarddoor,and

dummysmartcard.............103

1130Microprocessor............105

1140Systemboardassembly.........106

1150Audioboard.............111

1160Speakerassembly...........112

1170Hingebracket,dc-incableassembly,RJ45

card,andbasecoverassembly........114

2010LCDunit...............117

2020LCDfrontbezel............121

2030Camera/microphonecombocard.....122

2040Hinges,LCDpanel,andLCDcable....123

2050LEDcardandcableassembly......128

2060AntennaassemblyandLCDrearcover

assembly.................128

AppendixA.Notices.........131

Electronicemissionsnotices.........132

Trademarks................132

AppendixB.Abbreviationtable...133

iiHardwareMaintenanceManual

Aboutthismanual

ThismanualcontainsserviceandreferenceinformationforthefollowingThinkPad

ThinkPadL440

MachineType(MT)20ASand20AT

ThinkPadL540

MT20AUand20AV

notebookcomputers.

Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblems.

Important:

ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithThinkPadproducts.Use thismanualalongwiththeadvanceddiagnosticteststotroubleshootproblemseffectively. BeforeservicingaThinkPadproduct,besuretoreadalltheinformationunderChapter1“Safety information”onpage1

andChapter2“Importantserviceinformation”onpage25.

©CopyrightLenovo2013,2017

iii

ivHardwareMaintenanceManual

Chapter1.Safetyinformation

Thischapterpresentsfollowingsafetyinformationthatyouneedtobefamiliarwithbeforeyouservicea ThinkPadnotebookcomputer.

•“Generalsafety”onpage1

•“Electricalsafety”onpage2

•“Safetyinspectionguide”onpage3

•“Handlingdevicesthataresensitivetoelectrostaticdischarge”onpage3

•“Groundingrequirements”onpage4

•“Safetynotices(multilingualtranslations)”onpage4

•“Lasercompliancestatement(multilingualtranslations)”onpage19

Generalsafety

Followtheserulestoensuregeneralsafety:

•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.

•Whenliftinganyheavyobject:

1.Ensurethatyoustandsafelywithoutslipping.

2.Distributetheweightoftheobjectequallybetweenyourfeet.

3.Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempttolift.

4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe musclesinyourback.Donotattempttoliftanyobjectthatweighsmorethan16kg(35lb)orthat

youthinkistooheavyforyou.

•Donotperformanyactionthatcauseshazardstothecustomer,orthatmakestheequipmentunsafe.

•Beforeyoustartthemachine,ensurethatotherservicetechniciansandthecustomer'spersonnelare notinahazardousposition.

•Placeremovedcoversandotherpartsinasafeplace,awayfromallpersonnel,whileyouareservicing themachine.

•Keepyourtoolcaseawayfromwalkareassothatotherpeoplewillnottripoverit.

•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Ensurethatyoursleeves arefastenedorrolledupaboveyourelbows.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.

©CopyrightLenovo2013,2017

Electricalsafety

Observethefollowingruleswhenworkingonelectricalequipment.

Important:

Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoftmaterial thatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents. Manycustomershave,neartheirequipment,rubberﬂoormatsthatcontainsmallconductiveﬁbersto decreaseelectrostaticdischarges.Donotusethistypeofmattoprotectyourselffromelectricalshock.

•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,isnearyoutoswitchoffthepower,if

necessary.

–Useonlyonehandwhenworkingwithpowered-onelectricalequipment;keeptheotherhandinyour

pocketorbehindyourback.

Attention:Anelectricalshockcanoccuronlywhenthereisacompletecircuit.Byobservingtheabove rule,youcanpreventacurrentfrompassingthroughyourbody.

–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 –Similarunitstolistedabove Thispracticeensurescorrectgroundingoftheunits.

•Ifanelectricalaccidentoccurs:

2HardwareMaintenanceManual

–Usecaution;donotbecomeavictimyourself. –Switchoffpower. –Sendanotherpersontogetmedicalaid.

Safetyinspectionguide

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

Ifanyunsafeconditionsarepresent,youmustdeterminehowserioustheapparenthazardcouldbeand whetheryoucancontinuewithoutﬁrstcorrectingtheproblem.

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:

Chapter1.Safetyinformation3

1.Useproduct-speciﬁcESDprocedureswhentheyexceedtherequirementsnotedhere.

2.EnsurethattheESDprotectivedevicesyouusehavebeencertiﬁed(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.Y oucanusecoaxorconnector-outsideshellsonthesesystems.

–Usetheroundgroundprongoftheacplugonac-operatedcomputers.

Groundingrequirements

Electricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrectsystemfunction.Proper groundingoftheelectricaloutletcanbeveriﬁedbyacertiﬁedelectrician.