Lenovo ThinkPad T420si Hardware Maintenance Manual

HardwareMaintenanceManual

ThinkPadT420sandT420si

Downloaded from LpManual.com Manuals

Note

Beforeusingthisinformationandtheproductitsupports,besuretoreadthegeneralinformationunder

AppendixA“Notices”onpage143.

SeventhEdition(June2013)

©CopyrightLenovo2011,2013.

LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwareisdeliveredpursuantaGeneralServices

Administration“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforthinContract

No.GS-35F-05925.

Downloaded from LpManual.com Manuals

Contents

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

Chapter1.Safetyinformation......1

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

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

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

Handlingdevicesthataresensitivetoelectrostatic

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

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

Safetynotices(multilingualtranslations)......4

Lasercompliancestatement(multilingual

translations)................24

Chapter2.Importantservice

information..............31

StrategyforreplacingFRUs.........31

Strategyforreplacingaharddiskdrive...32

Importantnoticeforreplacingasystem

board................32

Howtouseerrormessage........32

StrategyforreplacingFRUsforCTO,CMV,and

GAV...................32

Productdenition............32

FRUidenticationforCTO,CMV,andGAV

products...............33

Chapter3.Generalcheckout.....35

Whattodorst..............35

Checkoutguide..............36

SystemsupportingtheLenovoThinkVantage

ToolboxprogramandthePC-DoctorforDOS

diagnosticsprogram..........36

SystemsupportingtheLenovodiagnostics

programs...............40

Powersystemcheckout...........42

Checkingtheacpoweradapter......43

Checkingoperationalcharging......44

Checkingthebatterypack........44

Checkingthebackupbattery.......44

Chapter4.Relatedservice

information..............47

RestoringthefactorycontentsbyusingProduct

Recoverydiscs..............47

RestoringthefactorycontentsbyusingRecovery

DiscSet.................47

Passwords................49

Power-onpassword...........49

Harddiskpassword...........49

Supervisorpassword..........49

Howtoremovethepower-onpassword...49

Howtoremovetheharddiskpassword...50

Powermanagement............50

Screenblankmode...........50

Sleep(standby)mode..........51

Hibernationmode...........51

Symptom-to-FRUindex...........52

Numericerrorcodes..........53

Errormessages............54

Beepsymptoms............54

No-beepsymptoms...........55

LCD-relatedsymptoms.........55

Intermittentproblems..........56

Undeterminedproblems.........56

Chapter5.Statusindicators.....57

Chapter6.Fnkeycombinations...61

Chapter7.FRUreplacement

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

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

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

Restoringtheserialnumberofthesystem

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

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

ReadingorwritingtheECAinformation...65

Chapter8.Removingandreplacinga

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

BeforeservicingThinkPadT420sandT420si

models..................67

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

1020SerialUltrabaySlimdeviceortravelbezel..69

1030Solid-statedrive(SSD)orharddiskdrive

(HDD)..................70

1040DIMM................72

1050PCIExpressMiniCardforwirelessLAN..74

1060PCIExpressMiniCardforwirelessWAN..77

10704–in–1mediacardreader........79

1080Keyboard..............80

1090Backupbattery............83

1100Palmrestwithngerprintreader,smartcard

reader,andspeaker.............84

1110LCDunit...............88

1120DC-insubcard............90

1130Bluetoothdaughtercard(BDC-3.0)....91

©CopyrightLenovo2011,2013

i

Downloaded from LpManual.com Manuals

1140Bluetooth-wirelessradioswitchFPC....91

1150Systemboard,fanassembly,34-mm

ExpressCardreader,andbasecover......93

1160mSATA...............99

2010LCDbezelassembly..........101

2020LCDpanel..............102

2030Integratedcamera,microphone,orhall

sensorcard................104

2040LEDsubcard.............106

2050LCDcable..............107

2060Hingekit...............108

2070LEDcable..............110

2080AntennakitandLCDrearcoverassembly..111

Chapter9.Locations........115

Frontview................115

Rearview.................116

Bottomview...............116

Chapter10.Partslist........117

Overall..................118

LCDFRUs................128

Keyboard.................132

Miscellaneousparts............133

acpoweradapter.............134

Powercords...............134

Recoverydiscs..............135

WindowsXPProfessional(32bit)DVDs...135

WindowsVistaHomeBasic(32bit)DVDs..136

WindowsVistaBusiness(32bit)DVDs...136

Windows7HomeBasic(32bit)DVDs....137

Windows7HomeBasic(64bit)DVDs....137

Windows7Ultimate(32bit)DVDs.....138

Windows7Ultimate(64bit)DVDs.....138

Windows7HomePremium(32bit)DVDs..138

Windows7HomePremium(64bit)DVDs..139

Windows7Professional(32bit)DVDs....139

Windows7Professional(64bit)DVDs....140

Windows7Professional(32bit)RapidBoot

DVDs................141

Commonservicetools...........142

AppendixA.Notices.........143

Electronicemissionsnotices.........144

Trademarks................144

iiHardwareMaintenanceManual

Downloaded from LpManual.com Manuals

Aboutthismanual

ThismanualcontainsserviceandreferenceinformationforthefollowingThinkPad

®

products.

ThinkPadT420sandT420si

Machinetypes(MT)4170,4171,4172,4173,4174,4175,and4176

Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblems.

Important:ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithThinkPad

products.Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblems

effectively.BeforeservicingaThinkPadproduct,besuretoreadalltheinformationunderChapter1“Safety

information”onpage1

andChapter2“Importantserviceinformation”onpage31.

©CopyrightLenovo2011,2013

iii

Downloaded from LpManual.com Manuals

ivHardwareMaintenanceManual

Downloaded from LpManual.com Manuals

Chapter1.Safetyinformation

Thischapterpresentsfollowingsafetyinformationthatyouneedtobefamiliarwithbeforeyouservice

aThinkPadNotebook.

•“Generalsafety”onpage1

•“Electricalsafety”onpage2

•“Safetyinspectionguide”onpage3

•“Handlingdevicesthataresensitivetoelectrostaticdischarge”onpage3

•“Groundingrequirements”onpage4

•“Safetynotices(multilingualtranslations)”onpage4

•“Lasercompliancestatement(multilingualtranslations)”onpage24

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.

©CopyrightLenovo2011,2013

1

Downloaded from LpManual.com Manuals

Electricalsafety

Observethefollowingruleswhenworkingonelectricalequipment.

Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoft

materialthatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.Manycustomershave,near

theirequipment,rubberoormatsthatcontainsmallconductiveberstodecreaseelectrostaticdischarges.

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,isnearyou.

Attention:Anotherpersonmustbetheretoswitchoffthepower,ifnecessary.

–Useonlyonehandwhenworkingwithpowered-onelectricalequipment;keeptheotherhandinyour

pocketorbehindyourback.

Attention:Anelectricalshockcanoccuronlywhenthereisacompletecircuit.Byobservingtheabove

rule,youmaypreventacurrentfrompassingthroughyourbody.

–Whenusingtesters,setthecontrolscorrectlyandusetheapprovedprobeleadsandaccessoriesfor

thattester.

–Standonsuitablerubbermats(obtainedlocally,ifnecessary)toinsulateyoufromgroundssuchas

metaloorstripsandmachineframes.

Observethespecialsafetyprecautionswhenyouworkwithveryhighvoltages;Instructionsforthese

precautionsareinthesafetysectionsofmaintenanceinformation.Useextremecarewhenmeasuring

highvoltages.

•Regularlyinspectandmaintainyourelectricalhandtoolsforsafeoperationalcondition.

•Donotusewornorbrokentoolsandtesters.

•Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkthatithasbeenpoweredoff.

•Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesofthesehazardsaremoistoors,

nongroundedpowerextensioncables,powersurges,andmissingsafetygrounds.

•Donottouchliveelectricalcircuitswiththereectivesurfaceofaplasticdentalmirror.Thesurfaceis

conductive;suchtouchingcancausepersonalinjuryandmachinedamage.

•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating

placesinamachine:

–Powersupplyunits

–Pumps

–Blowersandfans

–Motorgenerators

–Similarunitstolistedabove

Thispracticeensurescorrectgroundingoftheunits.

•Ifanelectricalaccidentoccurs:

–Usecaution;donotbecomeavictimyourself.

–Switchoffpower.

2HardwareMaintenanceManual

Downloaded from LpManual.com Manuals

–Sendanotherpersontogetmedicalaid.

Safetyinspectionguide

Thepurposeofthisinspectionguideistoassistyouinidentifyingpotentiallyunsafeconditions.Aseach

machinewasdesignedandbuilt,requiredsafetyitemswereinstalledtoprotectusersandservicetechnicians

frominjury.Thisguideaddressesonlythoseitems.Y oushouldusegoodjudgmenttoidentifypotential

safetyhazardsduetoattachmentofnon-ThinkPadfeaturesoroptionsnotcoveredbythisinspectionguide.

Ifanyunsafeconditionsarepresent,youmustdeterminehowserioustheapparenthazardcouldbeand

whetheryoucancontinuewithoutrstcorrectingtheproblem.

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.Thepowercordshouldbethetypespeciedinthepartslist.

c.Insulationmustnotbefrayedorworn.

4.Checkforcrackedorbulgingbatteries.

5.Removethecover.

6.Checkforanyobviousnon-ThinkPadalterations.Usegoodjudgmentastothesafetyofany

non-ThinkPadalterations.

7.Checkinsidetheunitforanyobviousunsafeconditions,suchasmetallings,contamination,wateror

otherliquids,orsignsofreorsmokedamage.

8.Checkforworn,frayed,orpinchedcables.

9.Checkthatthepower-supplycoverfasteners(screwsorrivets)havenotbeenremovedortamperedwith.

Handlingdevicesthataresensitivetoelectrostaticdischarge

Anycomputerpartcontainingtransistorsorintegratedcircuits(ICs)shouldbeconsideredsensitiveto

electrostaticdischarge(ESD.)ESDdamagecanoccurwhenthereisadifferenceinchargebetweenobjects.

ProtectagainstESDdamagebyequalizingthechargesothatthemachine,thepart,theworkmat,andthe

personhandlingthepartareallatthesamecharge.

Notes:

1.Useproduct-specicESDprocedureswhentheyexceedtherequirementsnotedhere.

2.MakesurethattheESDprotectivedevicesyouusehavebeencertied(ISO9000)asfullyeffective.

Chapter1.Safetyinformation3

Downloaded from LpManual.com Manuals

WhenhandlingESD-sensitiveparts:

•Keepthepartsinprotectivepackagesuntiltheyareinsertedintotheproduct.

•Avoidcontactwithotherpeople.

•Wearagroundedwriststrapagainstyourskintoeliminatestaticonyourbody.

•Preventthepartfromtouchingyourclothing.Mostclothingisinsulativeandretainsachargeevenwhen

youarewearingawriststrap.

•Useagroundedworkmattoprovideastatic-freeworksurface.Thematisespeciallyusefulwhen

handlingESD-sensitivedevices.

•Selectagroundingsystem,suchasthoselistedbelow,toprovideprotectionthatmeetsthespecic

servicerequirement.

Note:TheuseofagroundingsystemtoguardagainstESDdamageisdesirablebutnotnecessary.

–AttachtheESDgroundcliptoanyframeground,groundbraid,orgreen-wireground.

–Whenworkingonadouble-insulatedorbattery-operatedsystem,useanESDcommongroundor

referencepoint.Y oucanusecoaxorconnector-outsideshellsonthesesystems.

–Usetheroundgroundprongoftheacplugonac-operatedcomputers.

Groundingrequirements

Electricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrectsystemfunction.Proper

groundingoftheelectricaloutletcanbeveriedbyacertiedelectrician.

Safetynotices(multilingualtranslations)

Thesafetynoticesinthissectionareprovidedinthefollowinglanguages:

•English

•Arabic

•BrazilianPortuguese

•French

•German

•Hebrew

•Japanese

•Korean

•Spanish

•T raditionalChinese

4HardwareMaintenanceManual

Downloaded from LpManual.com Manuals

DANGER

Chapter1.Safetyinformation5

Downloaded from LpManual.com Manuals

DANGER

6HardwareMaintenanceManual

Downloaded from LpManual.com Manuals

Chapter1.Safetyinformation7

Downloaded from LpManual.com Manuals

8HardwareMaintenanceManual

Downloaded from LpManual.com Manuals

PERIGO

Chapter1.Safetyinformation9

Downloaded from LpManual.com Manuals

PERIGO

10HardwareMaintenanceManual

Downloaded from LpManual.com Manuals

DANGER

Chapter1.Safetyinformation11

Downloaded from LpManual.com Manuals

DANGER

12HardwareMaintenanceManual

Downloaded from LpManual.com Manuals

VORSICHT

Chapter1.Safetyinformation13

Downloaded from LpManual.com Manuals

VORSICHT

14HardwareMaintenanceManual

Downloaded from LpManual.com Manuals

Page is loading ...

Lenovo ThinkPad T420si Hardware Maintenance Manual

This manual is also suitable for

Lenovo ThinkPad T420si Hardware Maintenance Manual

Related papers

Other documents