![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg1.png)
ThinkPad10HardwareMaintenanceManual
MachineTypes:20E3and20E4
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg2.png)
Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadthegeneralinformation
underAppendixA“Notices”onpage69.
FirstEdition(September2015)
©CopyrightLenovo.
LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwareisdeliveredpursuantaGeneralServicesAdministration
“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforthinContractNo.GS-35F-05925.
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg3.png)
Contents
Aboutthismanual...........iii
Chapter1.Safetyinformation......1
Generalsafety................1
Electricalsafety...............1
Safetyinspectionguide............3
Handlingdevicesthataresensitivetoelectrostatic
discharge..................3
Groundingrequirements............4
Safetynotices(multilingualtranslations)......4
Chapter2.Importantservice
information..............19
StrategyforreplacingFRUs.........19
Importantnoticeforreplacingasystem
board................19
Howtouseerrormessage........20
StrategyforreplacingFRUsforCTO,specialbid
model,andstandardmodels.........20
Productdefinition............20
FRUidentification............20
Chapter3.Generalcheckout.....23
Whattodofirst..............23
Checkoutguide..............24
LenovoSolutionCenter.........24
Quicktestprograms...........24
UEFIdiagnosticprogram.........24
Bootablediagnosticprograms.......25
Powersystemcheckout...........26
Checkingthebuilt-inbatteryandoperational
charging...............26
Checkingtheacpoweradapter......26
Chapter4.Relatedservice
information..............29
Windowsrecoveryprograms(Windows8.1)...29
Refreshingyourtablet..........29
Resettingyourtablettothefactorydefault
settings................29
Usingtheadvancedstartupoptions....30
RecoveringyouroperatingsystemifWindows
8.1failstostart.............30
Creatingandusingrecoverymedia.....30
Windowsrecoveryapps(Windows10).....31
Resettingyourcomputer.........31
Usingadvancedstartupoptions......32
Recoveringyouroperatingsystemifthe
Windows10operatingsystemfailstostart..32
CreatingandusingarecoveryUSBdrive..32
LenovofactoryrecoveryUSBkey.......33
Usingpasswords..............33
Symptom-to-FRUindex...........34
Numericerrorcodes..........35
Intermittentproblems..........35
Undeterminedproblems.........35
Chapter5.Locations.........37
Locatingtabletcontrols,connectors,and
indicators.................37
LocatingFRUsandCRUs..........38
MajorFRUs..............39
Miscellaneouskitsandotherparts.....40
LookingupFRUinformation.........41
Chapter6.FRUreplacement
notices................43
Screwnotices...............43
Retainingserialnumbers...........44
Chapter7.Removingorreplacinga
FRU..................45
Generalguidelines.............45
Beforeservicingthetablet..........46
1010Backcoverassembly..........48
1020Smartcardreader,smart-card-reader
supportcard,andsmart-card-readercable...52
1030Powerbuttonandvolume-controlbutton..53
1040LCDcable..............54
1050Built-inbattery............54
1060Rear-facingcameramodule.......55
1070Fingerprint-readermodule........56
1080NFCcard,NFCcable,andNFCantenna
assembly.................57
1090LEDcable..............58
1100Front-facingcameramoduleand
front-facing-camera-modulecable.......58
1110WirelessWANcard...........59
1120Dockingsupportcard..........60
1130
Micro-HDMI-connector/USB-connector/dc-in-connector
bracket.................61
1150Audio-connectorbracket........62
1160Speakers..............62
1180Wireless-WANantennaassembly.....63
1190Systemboard.............65
1200LCDmodule.............66
©CopyrightLenovo
i
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg4.png)
AppendixA.Notices..........69
Electronicemissionnotices..........70
Trademarks................70
AppendixB.Abbreviationand
acronymtable.............71
iiThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg5.png)
Aboutthismanual
ThismanualcontainsserviceandreferenceinformationforthefollowingThinkPad
Machine
ThinkPad1020E3and20E4
Machinetype(MT)
®
products.
Important:
•ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithThinkPadproducts.Use
thismanualalongwiththeadvanceddiagnosticteststotroubleshootproblemseffectively.
•BeforeservicingaThinkPadproduct,besuretoreadalltheinformationunderChapter1“Safety
information”onpage1andChapter2“Importantserviceinformation”onpage19.
©CopyrightLenovo
iii
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg6.png)
ivThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg7.png)
Chapter1.Safetyinformation
Thischapterpresentsfollowingsafetyinformationthatyoumustbefamiliarwithbeforeyouservicea
ThinkPadtabletcomputer.
•“Generalsafety”onpage1
•“Electricalsafety”onpage1
•“Safetyinspectionguide”onpage3
•“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.
•Reinstallotherpartsthatyouhaveremoved.
Electricalsafety
Observethefollowingruleswhenworkingonelectricalequipment.
Important:
©CopyrightLenovo
1
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg8.png)
•Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoftmaterial
thatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.
•Manycustomershave,neartheirequipment,rubberfloormatsthatcontainsmallconductivefibersto
decreaseelectrostaticdischarges.Donotusethistypeofmattoprotectyourselffromelectricalshock.
•Findtheroomemergencypower-off(EPO)switch,disconnectingswitch,orelectricaloutlet.Ifanelectrical
accidentoccurs,youcanthenoperatetheswitchordisconnectthepowercordquickly.
•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.
•Disconnectallpowerbefore:
–Performingamechanicalinspection
–Workingnearpowersupplies
–Removingorinstallingmainunits
•Beforeyoustarttoworkonthemachine,disconnectthepowercord.Ifyoucannotunplugit,poweroff
thewallboxthatsuppliespowertothemachine,andlockthewallboxintheoffposition.
•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,
nongroundedpowerextensioncables,powersurges,andmissingsafetygrounds.
•Donottouchliveelectricalcircuitswiththereflectivesurfaceofaplasticdentalmirror.Thesurfaceis
conductive;suchtouchingcancausepersonalinjuryandmachinedamage.
•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating
placesinamachine:
–Powersupplyunits
–Pumps
–Motorgenerators
–Similarunitsaslistedabove
Thispracticeensurescorrectgroundingoftheunits.
•Ifanelectricalaccidentoccurs:
–Usecaution;donotbecomeavictimyourself.
–Switchoffpower.
–Sendanotherpersontogetmedicalaid.
2ThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg9.png)
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.Beginthecheckswiththepoweroffandthepowercorddisconnected.
Checklist:
1.Checkexteriorcoversfordamage(loose,broken,orsharpedges).
2.Turnoffthetablet.
3.Disablethebuilt-inbattery.See“Beforeservicingthetablet”onpage46.
4.Disconnectthepowercord.
5.Checkthepowercordforthefollowing:
a.Makesurethatathird-wiregroundconnectorisingoodcondition.Useametertomeasurethe
third-wiregroundcontinuity,andmakesurethatthecontinuitybetweentheexternalgroundpinand
theframegroundis0.1ohmorless.
b.Thepowercordisthetypespecifiedinthepartslist.
c.Insulationisnotfrayedorworn.
6.Removetheliquidcrystaldisplay(LCD)moduleassembly.
7.Checkforcrackedorbulgingbuilt-inbatteries.
8.Checkforanyobviousnon- ThinkPadalterations.Usegoodjudgmentastothesafetyofany
non-ThinkPadalterations.
9.Checkinsidetheunitforanyobviousunsafeconditions,suchasmetalfilings,contamination,wateror
otherliquids,orsignsoffireorsmokedamage.
10.Checkforworn,frayed,orpinchedcables.
11.Checkthatthebuilt-inbatteryfasteners(screwsorrivets)havenotbeenremovedortamperedwith.
Handlingdevicesthataresensitivetoelectrostaticdischarge
Anytabletpartcontainingtransistorsorintegratedcircuits(ICs)shouldbeconsideredsensitiveto
electrostaticdischarge(ESD).ESDdamagecanoccurwhenthereisadifferenceinchargebetweenobjects.
ProtectagainstESDdamagebyequalizingthechargesothatthemachine,thepart,theworkmat,andthe
personhandlingthepartareallatthesamecharge.
Notes:
1.Useproduct-specificESDprocedureswhentheyexceedtherequirementsnotedhere.
Chapter1.Safetyinformation3
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bga.png)
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.Y oucanusecoaxorconnector-outsideshellsonthesesystems.
–Usetheroundgroundprongoftheacplugonac-operatedtablets.
Groundingrequirements
Electricalgroundingofthetabletisrequiredforoperatorsafetyandcorrectsystemfunction.Proper
groundingoftheelectricaloutletcanbeverifiedbyacertifiedelectrician.
Safetynotices(multilingualtranslations)
Thesafetynoticesinthissectionareprovidedinthefollowinglanguages:
•English
•Arabic
•BrazilianPortuguese
•French
•German
•Hebrew
•Japanese
•Korean
•Spanish
•TraditionalChinese
DANGER
DANGER
4ThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bgb.png)
DANGER
DANGER
DANGER
DANGER
DANGER
Chapter1.Safetyinformation5
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bgc.png)
DANGER
6ThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bgd.png)
PERIGO
PERIGO
PERIGO
Chapter1.Safetyinformation7
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bge.png)
PERIGO
PERIGO
PERIGO
PERIGO
PERIGO
8ThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bgf.png)
DANGER
DANGER
DANGER
DANGER
DANGER
DANGER
Chapter1.Safetyinformation9
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg10.png)
DANGER
DANGER
VORSICHT
VORSICHT
VORSICHT
10ThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg11.png)
VORSICHT
VORSICHT
VORSICHT
VORSICHT
VORSICHT
Chapter1.Safetyinformation11
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg12.png)
12ThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg13.png)
Chapter1.Safetyinformation13
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg14.png)
14ThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg15.png)
Chapter1.Safetyinformation15
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg16.png)
16ThinkPad10HardwareMaintenanceManual
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg17.png)
Chapter1.Safetyinformation17
![](/html/0b/0bc6/0bc6f724a28478da03c56f7bb2c4fa28adf821cc65c1093fb9c8b98448f8b244/bg18.png)
18ThinkPad10HardwareMaintenanceManual