Lenovo 33472YU, S230U User Manual

HardwareMaintenanceManual

ThinkPadS230u

Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadthegeneralinformation

underAppendixA“Notices”onpage89.

FirstEdition(September2012)

©CopyrightLenovo2012.

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

Chapter2.Importantservice

information..............21

StrategyforreplacingFRUs.........21

Strategyforreplacingaharddiskdrive,a
solid-statedrive,oranmSATAsolid-state

drive.................22

Importantnoticeforreplacingasystem

board................22

Howtouseerrormessage........22

StrategyforreplacingFRUsforCTO,CMV ,and

GAV...................22

Productdenition............22

FRUidenticationforCTO,CMV ,andGAV

products...............23

Chapter3.Generalcheckout.....25

Whattodorst..............25

Checkoutguide..............26

LenovoSolutionCenter.........26

Quicktestprograms...........26

UEFIdiagnosticprogram.........27

Bootablediagnosticprograms.......27

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

Checkingtheacpoweradapter......28

Checkingoperationalcharging......29

Checkingthebatterypack........29

Checkingthebackupbattery.......29

Chapter4.Relatedservice

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

RestoringthefactorycontentsbyusingRecovery

DiscSet.................31

UsingtheWindowsrecoveryprogramsonthe

Windows8operatingsystem.........32

Passwords................33

Power-onpassword...........33

Hard-diskpassword...........33

Supervisorpassword..........34

Howtoremovethepower-onpassword...34
Howtoremovethehard-diskpassword...34

Powermanagement............35

Sleepmode..............35

Hibernationmode...........35

Wirelessoffmode...........36

Symptom-to-FRUindex...........36

Numericerrorcodes..........36

Errormessages............38

No-beepsymptoms...........38

Beepsymptoms............38

LCD-relatedsymptoms.........39

Intermittentproblems..........39

Undeterminedproblems.........39

Chapter5.Statusindicators.....41

Chapter6.Specialkeys........43

Chapter7.Locations.........45

Locatingcomputercontrols,connectors,and

indicators.................45

Frontview...............45

Rearview...............46

Bottomview..............46

LocatingFRUsandCRUs..........46

MajorFRUsandCRUs..........48

LCDFRUs..............50

LookingupFRUinformation.........51

Chapter8.FRUreplacement

notices................53

Screwnotices...............53

Retainingserialnumbers...........54

Restoringtheserialnumberofthesystem

unit.................54

RetainingtheUUID...........55

ReadingorwritingtheECAinformation...55

Chapter9.Removingorreplacinga

FRU..................57

Beforeservicingthecomputer........58

Disablingthebuilt-inbattery.......58

RemovingtheSIMcard.........58

1010Harddiskdriveorsolid-statedrive....58

1020Keyboard..............60

1030PCIExpressMiniCardforwirelessLAN..62

©CopyrightLenovo2012

i

1040PCIExpressMiniCardforwirelessWANor

mSATAsolid-statedrive...........63

1050Keyboardbezel,backupbattery,andspeaker

assembly.................66

1060Batterypack.............69

1070Proximitysensors...........70

1080Thermalfanassemblyandharddiskdriveor

solid-statedriveconnector..........72

1090LCDunit...............73

1100DC-inconnector............77

1110Systemboardandbasecoverassembly..78

2010Buttonbezel.............81

2020LCDpanel..............81

2030Buttonboard.............82

2040Integratedcamera...........83

2050Hinge................84

2060Wirelessantennaassembly,LCDcable
assembly,powercableassembly,andLCDrear

coverassembly..............86

AppendixA.Notices..........89

Electronicemissionsnotices.........90

Trademarks................90

iiHardwareMaintenanceManual

Aboutthismanual

ThismanualcontainsserviceandreferenceinformationforthefollowingThinkPad

ThinkPadS230u

MachineType3347

®

products.

Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblems.

Important:

ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithThinkPadproducts.Use
thismanualalongwiththeadvanceddiagnosticteststotroubleshootproblemseffectively.
BeforeservicingaThinkPadproduct,besuretoreadalltheinformationunderChapter1“Safety
information”onpage1andChapter2“Importantserviceinformation”onpage21.

©CopyrightLenovo2012

iii

ivHardwareMaintenanceManual

Chapter1.Safetyinformation

Thischapterpresentsfollowingsafetyinformationthatyouneedtobefamiliarwithbeforeyouservicea
ThinkPadnotebookcomputer.

•“Generalsafety”onpage1

•“Electricalsafety”onpage2

•“Safetyinspectionguide”onpage3

•“Handlingdevicesthataresensitivetoelectrostaticdischarge”onpage3

•“Groundingrequirements”onpage4

•“Safetynotices(multilingualtranslations)”onpage4

Generalsafety

Followtheserulestoensuregeneralsafety:

•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.

•Whenliftinganyheavyobject:

1.Ensurethatyoucanstandsafelywithoutslipping.

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.

©CopyrightLenovo2012

1

Electricalsafety

Observethefollowingruleswhenworkingonelectricalequipment.

Important:

Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoftmaterial
thatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.
Manycustomershave,neartheirequipment,rubberoormatsthatcontainsmallconductivebersto
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

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:

2HardwareMaintenanceManual

–Usecaution;donotbecomeavictimyourself.
–Switchoffpower.
–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.Thepowercordshouldbetheauthorizedtypespeciedforyourcomputer.Goto:

http://www.lenovo.com/serviceparts-lookup.

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:

Chapter1.Safetyinformation3

1.Useproduct-specicESDprocedureswhentheyexceedtherequirementsnotedhere.

2.EnsurethattheESDprotectivedevicesyouusehavebeencertied(ISO9000)asfullyeffective.

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

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Chapter2.Importantserviceinformation

Thischapterpresentsfollowingimportantserviceinformationthatappliestoallmachinetypessupportedby
thismanual:

•“StrategyforreplacingFRUs”onpage21
–“Strategyforreplacingaharddiskdrive,asolid-statedrive,oranmSATAsolid-statedrive”onpage22
–“Importantnoticeforreplacingasystemboard”onpage22
–“Howtouseerrormessage”onpage22

•“StrategyforreplacingFRUsforCTO,CMV,andGAV”onpage22
–“Productdenition”onpage22
–“FRUidenticationforCTO,CMV ,andGAVproducts”onpage23

Important:

•AdvisecustomerstocontacttheLenovoCustomerSupportCenteriftheyneedanyassistancein
obtainingorinstallinganysoftwarexes,drivers,andUEFIBIOSdownloads.T elephonenumbersfor
LenovoSupportareavailableat:
http://www.lenovo.com/support/phone

•SystemDisassembly/ReassemblyvideosthatshowtheFRUremovalsorreplacements
fortheLenovo
http://www.lenovoservicetraining.com/ion/

StrategyforreplacingFRUs

®

authorizedservicetechniciansareavailableinthefollowingsupportsite:

Beforereplacingparts:

Ensurethatallsoftwarexes,drivers,andUEFIBIOSdownloadsareinstalledbeforereplacinganyFRUs
listedinthismanual.

Afterasystemboardisreplaced,ensurethatthelatestUEFIBIOSisloadedtothesystemboardbefore
completingtheserviceaction.

Todownloadsoftwarexes,drivers,andUEFIBIOS,doasfollows:

1.Gotohttp://www.lenovo.com/support.

2.EntertheproductnumberofthecomputerorpresstheRunAuto-Detectbuttononthescreen.

3.SelectDrivers&Software.

4.Followthedirectionsonthescreenandinstallthenecessarysoftware.

UsethefollowingstrategytopreventunnecessaryexpenseforreplacingandservicingFRUs:

•IfyouareinstructedtoreplaceaFRUbutthereplacementdoesnotcorrecttheproblem,reinstall
theoriginalFRUbeforeyoucontinue.

•Somecomputershavebothaprocessorboardandasystemboard.Ifyouareinstructedtoreplaceeither
theprocessorboardorthesystemboard,andreplacingoneofthemdoesnotcorrecttheproblem,
reinstallthatboard,andthenreplacetheotherone.

•IfanadapteroradeviceconsistsofmorethanoneFRU,anyoftheFRUsmightbethecauseoftheerror.
Beforereplacingtheadapterordevice,removetheFRUs,onebyone,toseeifthesymptomschange.
ReplaceonlytheFRUthatchangedthesymptoms.

©CopyrightLenovo2012

21

Attention:Thesetupcongurationonthecomputeryouareservicingmighthavebeencustomized.Running

AutomaticCongurationmightalterthesettings.Notethecurrentcongurationsettings(usingtheView
Congurationoption);then,whenservicehasbeencompleted,verifythatthosesettingsremainineffect.

Strategyforreplacingaharddiskdrive,asolid-statedrive,oranmSA TA solid-statedrive

Alwaystrytorunalow-levelformatbeforereplacingaharddiskdrive.Thiswillcauseallcustomerdataon
theharddisktobelost.Besurethatthecustomerhasacurrentbackupofthedatabeforedoingthistask.

Attention:Thedrivestartupsequenceinthecomputeryouareservicingmighthavebeenchanged.Be
extremelycarefulduringwriteoperationssuchascopying,saving,orformatting.Ifyouselectanincorrect
drive,dataorprogramscanbeoverwritten.

IfthecomputerisequippedwithbothaharddiskdriveandanmSATAsolid-statedrive,donotusethe
mSATAsolid-statedriveasabootabledevice.ThemSATAsolid-statedriveisusedforthe“cache”function
andtosupporttheIntel
solid-statedrivebythemselves.Otherwise,the“cache”functionwillnotworkandtheIntelRapidStart
Technologycannotbeusedanymore.

Attention:EnsurethatyoupartitionthemSATAsolid-statedriveafterinstallingitonthecomputeryouare
servicing.Otherwise,themSAT Asolid-statedrivewillnotfunctioncorrectly.Forinstructionsonhowto
partitionanmSAT Asolid-statedrive,gotohttp://www.lenovo.com/support/msata-fru.

®

RapidStartTechnology.WerecommendthatusersdonotreplacethemSATA

Importantnoticeforreplacingasystemboard

Somecomponentsmountedonasystemboardareverysensitive.Improperhandlingofasystemboardcan
causedamagetothosecomponents,andmightcauseasystemmalfunction.

Attention:Whenhandlingasystemboard:

•Donotdropasystemboardorapplyanyexcessiveforcetoit.

•Avoidroughhandlingofanykind.

•AvoidbendingasystemboardandhardpushingtopreventcrackingateachBallGridArray(BGA)chipset.

Howtouseerrormessage

Usetheerrorcodesdisplayedonthescreentodiagnosefailures.Ifmorethanoneerrorcodeisdisplayed,
beginthediagnosiswiththersterrorcode.Whatevercausesthersterrorcodemightalsocausefalse
errorcodes.Ifnoerrorcodeisdisplayed,seewhethertheerrorsymptomislistedintheSymptom-to-FRU
Indexforthecomputeryouareservicing.

StrategyforreplacingFRUsforCTO,CMV ,andGAV

Productdenition

DynamicCongureT oOrder(CTO)

ThisprovidestheabilityforacustomertocongureaLenovosolutionfromaneSite,andhavethis
congurationsenttofulllment,whereitisbuiltandshippeddirectlytothecustomer.Themachinelabel,
ProductEntitlementWarehouse(PEW),andeSupportwillloadtheseproductsasthe4-digitMTand3-digit
model,wheremodel=“CTO”(Example:1829-CTO).

22HardwareMaintenanceManual

CustomModelVariant(CMV)

ThisisauniquecongurationthathasbeennegotiatedbetweenLenovoandthecustomer.Aunique4-digit
MTand3-digitmodelisprovidedtothecustomertoplaceorders(Example:1829-W15).ACMVisaspecial
bidoffering.Therefore,itisNOTgenerallyannounced.

•TheMTMportionofthemachinelabelisthe4-digitMTand3-digitmodel,wheremodel=“CTO”
(Example:1829-CTO).ThePRODUCTIDportionofthemachinelabelisthe4-digitMTand3-digitCMV
model(Example:1829-W15).

•ThePEWrecordisthe4-digitMTand3-digitmodel,wheremodel=“CTO”(Example:1829-CTO).

•eSupportwillshowboththeCTOandCMVmachinetypemodels(Example:1829-CTOand1829-W15
willbefoundontheeSupportsite.)

GeneralAnnounceVariant(GAV)

Thisisastandardmodel(xedconguration).GAVsareannouncedandofferedtoallcustomers.The
MTMportionofthemachinelabelisa4-digitMTand3-digitmodel,wheremodel=a“xedpartnumber”,
not“CTO”(Example:1829-F1U).Also,PEW,andeSupportwilllisttheseproductsunderthesamexed
modelnumber.

FRUidenticationforCTO,CMV,andGAVproducts

TherearetwoinformationresourcestoidentifywhichFRUsareusedtosupportCTO,CMV,andGAV
products.ThesesourcesarePEWandeSupport.

UsingPEW

•PEWistheprimarysourceforidentifyingFRUpartnumbersandFRUdescriptionsforthekeycommodities
forCTO,CMVandGAVproductsataMT-serialnumberlevel.Anexampleofkeycommoditiesarehard
diskdrives,systemboards,microprocessors,LiquidCrystalDisplays(LCDs),andmemory.

•Remember,allCTOandCMVproductsareloadedinPEWunderthe4-digitMTand3-digitmodel,where
model=“CTO”(Example:1829-CTO).GAVsareloadedinPEWunderthe4-digitMTand3-digitmodel,
wheremodel=a“xedpartnumber”,not“CTO”(Example:1829-F1U).

•PEWcanbeaccessedatthefollowingWebsite:
http://www.lenovo.com/support/site.wss/document.do?lndocid=LOOK-WARNTY
SelectWarrantylookup.InputtheMTandtheSerialnumberandthelistofkeycommoditieswillbe
returnedinthePEWrecordunderCOMPONENTINFORMA TION.

UsingeSupport

Forkeycommodities(examples-harddiskdrive,systemboard,microprocessor ,LCD,andmemory)

eSupportcanbeusedtoviewthewarrantystatusofkeycommoditiesbuiltinaparticularmachineserial(this
isthesamerecordfoundinPEW).eSupportcanbeaccessedathttp://www.lenovo.com/support.

Toviewthewarrantystatusofthekeycommoditiesonyourcomputer,dothefollowing:

1.Gotohttp://www.lenovo.com/support.

2.ClickWarranty&Services.

3.ClickCheckWarrantyStatus.

4.OntheWarrantyStatusLookuppage,clickPartsLookup.

5.T ypeyourmachinetypeandserialnumber,andthenclickSubmit.

FortheremainingFRUs(thecompletelistofFRUsattheMTmodellevel)

eSupportalsocanbeusedtoviewthecompletelistofFRUsforamachinetypeandmodel.

Chapter2.Importantserviceinformation23

ToviewthecompletelistofFRUs,dothefollowing:

1.Gotohttp://www.lenovo.com/support.

2.ClickParts&Accessories.

3.ProvideyourproductinformationorclickLaunchtoautomaticallyidentifyyourproduct.

4.ClickProduct&PartsDetail.

5.OnthePRODUCTANDPARTSDETAILpage,clickPartsDetailtoviewthecompletelistofFRUs.

24HardwareMaintenanceManual