Lenovo ThinkCentre M90 User guide

ThinkCentre

UserGuide

MachineTypes:3026,3039,3137,3149,3245,3269,3319,3394,

3491,3627,3699,3878,4972,5132,5261,5297,5391,5472,5485,

5536,5548,5567,5864,and6213

ThinkCentre

UserGuide

MachineTypes:3026,3039,3137,3149,3245,3269,3319,3394,

3491,3627,3699,3878,4972,5132,5261,5297,5391,5472,5485,

5536,5548,5567,5864,and6213

Note

Beforeusingthisinformationandtheproductitsupports,besuretoreadandunderstandtheThinkCentre

SafetyandWarrantyGuideandAppendixA“Notices”onpage55

.

FirstEdition(October2010)

©CopyrightLenovo2010.

LENOVOproducts,data,computersoftware,andserviceshavebeendevelopedexclusivelyatprivateexpenseandare

soldtogovernmentalentitiesascommercialitemsasdenedby48C.F.R.2.101withlimitedandrestrictedrightsto

use,reproductionanddisclosure.

LIMITEDANDRESTRICTEDRIGHTSNOTICE:Ifproducts,data,computersoftware,orservicesaredeliveredpursuant

aGeneralServicesAdministration“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforth

inContractNo.GS-35F-05925.

Contents

Importantsafetyinformation.....vii

Chapter1.Productoverview......1

Features..................1

Specications................3

Softwareoverview..............4

SoftwareprovidedbyLenovo........4

AdobeReader..............6

Antivirussoftware.............6

Locations..................6

Locatingconnectorsonthefrontofyour

computer................6

Locatingconnectorsontherearofyour

computer................7

Locatingcomponents...........8

Locatingpartsonthesystemboard.....9

Locatinginternaldrives.........10

Chapter2.Installingorreplacing

hardware...............11

Handlingstatic-sensitivedevices.......11

Installingorreplacinghardware........11

Installingexternaloptions........11

Openingthecomputercover.......12

Accessingthesystemboardcomponentsand

drives................12

Installingorreplacingamemorymodule...13

InstallingorreplacingaPCIcard......15

Replacingthebattery..........17

Replacingtheharddiskdrive.......18

Replacingtheopticaldrive........20

Replacingthepowersupplyassembly...22

Replacingtheheatsink.........24

ReplacingthefrontaudioandUSB

assembly...............26

Replacingthesystemfan.........27

Replacingtheinternalspeaker.......28

Replacingthekeyboardormouse.....31

Completingthepartsreplacement.....32

Installingsecurityfeatures..........33

Integratedcablelock..........33

Passwordprotection..........34

Erasinglostorforgottenpasswords(clearing

CMOS)................34

Chapter3.Recoveryinformation...35

Creatingandusingrecoverymedia......35

Creatingrecoverymedia.........35

Usingrecoverymedia..........36

Performingbackupandrecoveryoperations...36

Performingabackupoperation......36

Performingarecoveryoperation......37

UsingtheRescueandRecoveryworkspace...37

Creatingandusingarescuemedium......38

Creatingarescuemedium........38

Usingarescuemedium.........39

Installingorreinstallingdevicedrivers.....39

Solvingrecoveryproblems..........40

Chapter4.UsingtheSetupUtility..41

StartingtheSetupUtilityprogram.......41

Viewingandchangingsettings........41

Usingpasswords..............41

Passwordconsiderations.........41

Power-OnPassword..........42

AdministratorPassword.........42

HardDiskPassword...........42

Setting,changing,anddeletingapassword.42

Enablingordisablingadevice........42

Selectingastartupdevice..........43

Selectingatemporarystartupdevice....43

Selectingorchangingthestartupdevice

sequence...............43

ExitingfromtheSetupUtilityprogram.....43

Chapter5.Updatingsystem

programs...............45

Usingsystemprograms...........45

Updating(ashing)theBIOSfromadisc....45

Updating(ashing)theBIOSfromyouroperating

system..................46

RecoveringfromaPOST/BIOSupdatefailure..46

Chapter6.Troubleshootingand

diagnostics..............47

Basictroubleshooting............47

Diagnosticprograms............48

LenovoThinkVantageToolbox.......48

PC-DoctorforRescueandRecovery....49

PC-DoctorforDOS...........49

Cleaninganopticalmouse..........50

Chapter7.Gettinginformation,help,

andservice..............51

Informationresources............51

©CopyrightLenovo2010

v

OnlineBooksfolder...........51

LenovoThinkVantageTools........51

ThinkVantageProductivityCenter.....51

LenovoWelcome............52

AccessHelp..............52

SafetyandWarranty...........52

LenovoWebsite(http://www.lenovo.com)..52

Helpandservice..............53

Usingthedocumentationanddiagnostic

programs...............53

Callingforservice............53

Usingotherservices..........54

Purchasingadditionalservices......54

AppendixA.Notices.........55

Televisionoutputnotice...........56

EuropeanconformanceCEmark.......56

Trademarks................56

Index..................57

viThinkCentreUserGuide

Importantsafetyinformation

CAUTION:

Beforeusingthismanual,besuretoreadandunderstandalltherelatedsafetyinformationforthis

product.RefertotheThinkCentreSafetyandWarrantyGuidethatyoureceivedwiththisproductfor

thelatestsafetyinformation.Readingandunderstandingthissafetyinformationreducestheriskof

personalinjuryandordamagetoyourproduct.

IfyounolongerhaveacopyoftheThinkCentreSafetyandWarrantyGuide,youcanobtainaPortable

DocumentFormat(PDF)versionfromtheLenovo

®

SupportWebsiteat:

http://www.lenovo.com/support

©CopyrightLenovo2010

vii

viiiThinkCentreUserGuide

Chapter1.Productoverview

Thischapterdescribesthecomputerfeatures,specications,preinstalledsoftwareprograms,andpart

andconnectorlocations.

Features

Thissectionprovidesinformationaboutthecomputerfeatures.

Systeminformation

Thefollowinginformationcoversavarietyofmodels.Forinformationaboutyourspecicmodel,usethe

SetupUtilityprogram.SeeChapter4“UsingtheSetupUtility”onpage41

.

Microprocessor

Yourcomputercomeswithoneofthefollowingmicroprocessors(internalcachesizevariesbymodeltype):

•Intel

®

Core™i3microprocessor

•IntelCorei5microprocessor

•IntelCorei7microprocessor

•IntelPentium

®

microprocessor

Memory

•Supportsuptofourdoubledatarate3dualinlinememorymodules(DDR3DIMMs)

Internaldrives

•Opticaldrive

•SerialAdvancedTechnologyAttachment(SATA)internalharddiskdrive(installedinsomemodels)

Videosubsystem

•IntegratedgraphicscardforaVideoGraphicsArray(VGA)connectorandaDisplayPortconnector(not

applicableonsomemodels)

•PeripheralComponentInterconnect(PCI)Expressx16graphicscardslotonthesystemboardfora

discretegraphicscard

Audiosubsystem

•Integratedhigh-denition(HD)audio

•Audioline-inconnector,audioline-outconnector,andmicrophoneconnectorontherearpanel

•Microphoneconnectorandheadphoneconnectoronthefrontpanel

•Internalspeaker(installedinsomemodels)

Connectivity

•100/1000MbpsintegratedEthernetcontroller

•PCIFaxmodem(somemodels)

Systemmanagementfeatures

©CopyrightLenovo2010

1

•Abilitytostorepower-onself-test(POST)hardwaretestresults

•Automaticpower-onstartup

•DesktopManagementInterface(DMI)

•IntelActiveManagementTechnology(AMT)(availableonsomemodels)

•IntelMatrixStorageManager

•PrebootExecutionEnvironment(PXE)

•SecureManagedClient(SMC)(somemodels)

•SystemManagement(SM)BasicInput/OutputSystem(BIOS)andSMsoftware

•WakeonLAN

•WakeonRing

•WindowsManagementInstrumentation(WMI)

Input/Output(I/O)features

•9-pinserialport(onestandardandoneoptional)

•EightUniversalSerialBus(USB)connectors(twoonthefrontpanelandsixontherearpanel)

•Ethernetconnector

•OneDisplayPortconnector(notapplicableonsomemodels)

•OneVGAmonitorconnector(notapplicableonsomemodels)

•OnePersonalSystem/2

®

(PS/2

®

)keyboardconnector(optional)

•OnePS/2mouseconnector(optional)

•Threeaudioconnectorsontherearpanel(audioline-inconnector,audioline-outconnector,and

microphoneconnector)

•Twoaudioconnectorsonthefrontpanel(microphoneconnectorandheadphoneconnector)

Formoreinformation,see“Locatingconnectorsonthefrontofyourcomputer”onpage6

and“Locating

connectorsontherearofyourcomputer”onpage7.

Expansion

•Oneharddiskdrivebay

•Oneopticaldrivebay

•OnePCIcardslot

•OnePCIExpressx16graphicscardslot

Powersupply

•240-wattauto-sensingpowersupply

Securityfeatures

•Computrace

•Coverpresenceswitch(alsocalledintrusionswitch)

•Enablingordisablingadevice

•EnablingordisablingUSBconnectorsindividually

•Harddiskdrivepassword

•Keyboardwithngerprintreader(shippedwithsomemodels)

2ThinkCentreUserGuide

•Power-onpassword(POP)andAdministratorPasswordforBIOSaccess

•Startupsequencecontrol

•Startupwithoutkeyboardormouse

•Supportforanintegratedcablelock(Kensingtonlock)

•TrustedPlatformModule(TPM)

Preinstalledsoftwareprograms

Yourcomputerispreinstalledwithsomesoftwareprogramstohelpyouworkmoreeasilyandsecurely.For

moreinformation,see“Softwareoverview”onpage4

.

Preinstalledoperatingsystem

Yourcomputerispreinstalledwithoneofthefollowingoperatingsystems:

•Microsoft

®

Windows

®

7

•MicrosoftWindowsVista

®

Operatingsystem(s),certiedortestedforcompatibility

1

(variesbymodeltype)

•Linux

®

Specications

Thissectionliststhephysicalspecicationsforyourcomputer.

1.Theoperatingsystem(s)listedherearebeingcertiedortestedforcompatibilityatthetimethispublicationgoesto

press.AdditionaloperatingsystemsmightbeidentiedbyLenovoascompatiblewithyourcomputerfollowingthe

publicationofthismanual.Thislistissubjecttochange.T odetermineifanoperatingsystemhasbeencertiedor

testedforcompatibility,checktheWebsiteoftheoperatingsystemvendor.

Chapter1.Productoverview3

Dimensions

Width:317mm(12.48inches)

Height:99mm(3.9inches)

Depth:355mm(13.98inches)

Weight

Maximumcongurationasshipped:7.5kg(16.53lbs)

Environment

•Airtemperature:

Operating:10°Cto35°C(50°Fto95°F)

Non-operating:-40°Cto60°C(-40°Fto140°F)

Non-operating:-10°Cto60°C(14°Fto140°F)(withoutpackage)

•Humidity:

Operating:20%to80%(non-condensing)

Non-operating:20%to90%(non-condensing)

•Altitude:

Operating:-50to10000ft(-15.2to3048m)

Non-operating:-50to35000ft(-15.2to10668m)

Electricalinput

•Inputvoltage:

–Lowrange:

Minimum:100Vac

Maximum:127Vac

Inputfrequencyrange:50to60Hz

Voltage-selectionswitchsetting:115Vac

–Highrange:

Minimum:200Vac

Maximum:240Vac

Inputfrequencyrange:50to60Hz

Voltage-selectionswitchsetting:230Vac

Softwareoverview

Thissectiondescribesthesoftwarepreinstalledonthecomputersthathaveaninternalharddiskdrive

andanoperatingsystemfromLenovo.

SoftwareprovidedbyLenovo

ThefollowingsoftwareprogramsareprovidedbyLenovotohelpyouimproveproductivityandreducethe

costassociatedwithmaintainingyourcomputer.Softwareprogramsprovidedwithyourcomputermight

varydependingonyourcomputermodeltypeandpreinstalledoperatingsystem.

LenovoThinkVantageTools

TheLenovoThinkVantage

®

Toolsprogramguidesyoutoahostofinformationsourcesandprovideseasy

accesstovarioustoolstohelpyouworkmoreeasilyandsecurely.Formoreinformation,see“Lenovo

ThinkVantageTools”onpage51

.

4ThinkCentreUserGuide

Note:TheLenovoThinkVantageToolsprogramisonlyavailableoncomputerswiththeWindows7operating

systemfromLenovo.

ThinkVantageProductivityCenter

TheThinkVantageProductivityCenterprogramguidesyoutoahostofinformationandtoolstohelpyouset

up,understand,maintain,andenhanceyourcomputer.

Note:TheThinkVantageProductivityCenterprogramisonlyavailableoncomputerspreinstalledwith

theWindowsVistaoperatingsystemfromLenovo.

LenovoWelcome

TheLenovoWelcomeprogramintroducesyoutosomeinnovativebuilt-infeaturesofLenovoandguidesyou

throughafewimportantsetuptaskstohelpyoumakethemostofyourcomputer.

ThinkVantageRescueandRecovery

TheThinkVantageRescueandRecovery

®

programisaonebuttonrecoveryandrestoresolutionthat

includesasetofselfrecoverytoolstohelpusersdiagnosecomputerproblems,gethelp,andrecoverfrom

systemcrashesquickly,eveniftheprimaryoperatingsystemwillnotstart.

ThinkVantageClientSecuritySolution

TheThinkVantageClientSecuritySolutionprogramisavailableonselectLenovocomputers.Ithelpsprotect

yourinformation,includingvitalsecurityinformationlikepasswords,encryptionkeys,andelectronic

credentials,whileguardingagainstunauthorizeduseraccesstodata.

Note:TheThinkVantageClientSecuritySolutionprogramisonlyavailableoncomputerspreinstalledwith

theWindowsVistaoperatingsystemfromLenovo.

PasswordManager

ThePasswordManagerprogramhelpsyouautomaticallycaptureandllinauthenticationinformationfor

WindowsapplicationsandWebsites.

Note:ThePasswordManagerprogramisonlyavailableoncomputerspreinstalledwiththeWindows7

operatingsystemfromLenovo.

PowerManager

ThePowerManagerprogramprovidesconvenient,exible,andcompletepowermanagementforyour

ThinkCentre

®

computer.ByusingthePowerManagerprogram,youcanadjustyourpowersettingsto

achievethebestbalancebetweensystemperformanceandpowersaving.

ProductRecovery

TheProductRecoveryprogramenablesyoutorestorethecontentsoftheharddiskdrivetothefactory

defaultsettings.

FingerprintSoftware

Theintegratedngerprintreaderprovidedonsomekeyboardsenablesyoutoenrollyourngerprintand

associateitwithyourpower-onpassword,harddiskdrivepassword,andWindowspassword.Asaresult,

ngerprintauthenticationcanreplacepasswordsandenablesimpleandsecureuseraccess.Angerprint

readerkeyboardisavailablewithselectcomputersorcanbepurchasedforcomputersthatsupportthis

option.

Chapter1.Productoverview5

LenovoThinkVantageToolbox

TheLenovoThinkVantageT oolboxprogramhelpsyoumaintainyourcomputer,improvecomputingsecurity,

diagnosecomputerproblems,getfamiliarwiththeinnovativetechnologiesprovidedbyLenovo,andgetmore

informationaboutyourcomputer.See“LenovoThinkVantageToolbox”onpage48

fordetailedinformation.

PC-DoctorforRescueandRecovery

ThePC-DoctorforRescueandRecoverydiagnosticprogramispreinstalledonyourharddiskdrive.Itis

partoftheRescueandRecoveryworkspaceoneachLenovocomputertodiagnosehardwareproblems

andreportoperating-system-controlledsettingsthatcancausehardwarefailures.UsethePC-Doctorfor

RescueandRecoverydiagnosticprogramifyouareunabletostarttheWindowsoperatingsystem.See

“PC-DoctorforRescueandRecovery”onpage49

formoreinformation.

AdobeReader

TheAdobeReaderprogramisatoolusedtoview,print,andsearchPDFdocuments.

See“OnlineBooksfolder”onpage51formoreinformationaboutaccessingtheonlinebooksandthe

LenovoWebsite.

Antivirussoftware

Yourcomputercomeswithantivirussoftwarethatyoucanusetodetectandeliminateviruses.Lenovo

providesafullversionofantivirussoftwareonyourharddiskdrivewithafree30-daysubscription.After30

days,youmustrenewthelicensetocontinuereceivingtheantivirusprogramupdates.

Locations

Locatingconnectorsonthefrontofyourcomputer

Frontconnectorlocationsshowsthelocationsoftheconnectorsonthefrontofyourcomputer.

Figure1.Frontconnectorlocations

1USBconnector

3Microphoneconnector

2Headphoneconnector

4USBconnector

6ThinkCentreUserGuide

Locatingconnectorsontherearofyourcomputer

Rearconnectorlocationsshowsthelocationsoftheconnectorsontherearofyourcomputer.Some

connectorsontherearofyourcomputerarecolor-codedtohelpyoudeterminewheretoconnectthe

cablesonyourcomputer.

3

4

5

6

7

8

3

4

5

6

7

8

Figure2.Rearconnectorlocations

1Optionalserialport8VGAmonitorconnector(notapplicableonsomemodels)

2Powercordconnector

9USBconnectors(4)

3Audioline-inconnector

10DisplayPortconnector(notapplicableonsomemodels)

4Audioline-outconnector

11USBconnectors(2)

5Microphoneconnector12Ethernetconnector

6Serialport13PCIExpressx16graphicscardslot

7PS/2keyboardandmouseconnectors(optional)14PCIcardslot

ConnectorDescription

Audioline-inconnector

Usedtoreceiveaudiosignalsfromanexternalaudiodevice,suchasastereo

system.Whenyouattachanexternalaudiodevice,acableisconnectedbetween

theaudioline-outconnectorofthedeviceandtheaudioline-inconnectorofthe

computer.

Audioline-outconnector

Usedtosendaudiosignalsfromthecomputertoexternaldevices,suchas

poweredstereospeakers(speakerswithbuilt-inampliers),headphones,

multimediakeyboards,ortheaudioline-inconnectoronastereosystemorother

externalrecordingdevice.

Chapter1.Productoverview7

ConnectorDescription

DisplayPortconnector

Usedtoattachahigh-performancemonitor,adirect-drivemonitor,orother

devicesthatuseaDisplayPortconnector.

Ethernetconnector

UsedtoattachanEthernetcableforalocalareanetwork(LAN).

Note:TooperatethecomputerwithinFCCClassBlimits,useaCategory5

Ethernetcable.

MicrophoneconnectorUsedtoattachamicrophonetoyourcomputerwhenyouwanttorecordsoundor

ifyouusespeech-recognitionsoftware.

Serialport

Usedtoattachanexternalmodem,aserialprinter,orotherdevicesthatusea

9-pinserialport.

PS/2keyboardconnector

(optional)

UsedtoattachakeyboardthatusesaPS/2keyboardconnector.

PS/2mouseconnector(optional)Usedtoattachamouse,atrackball,orotherpointingdevicesthatuseaPS/2

mouseconnector.

USBconnectorUsedtoattachadevicethatrequiresaUSBconnector,suchasaUSBkeyboard,

aUSBmouse,aUSBscanneroraUSBprinter.IfyouhavemorethaneightUSB

devices,youcanpurchaseaUSBhub,whichyoucanusetoconnectadditional

USBdevices.

VGAmonitorconnectorUsedtoattachaVGAmonitororotherdevicesthatuseaVGAmonitorconnector.

Locatingcomponents

Figure3“Componentlocations”onpage8showsthelocationsofthevariouscomponentsinyourcomputer.

Toopenthecomputercover,see“Openingthecomputercover”onpage12

.

Figure3.Componentlocations

8ThinkCentreUserGuide

1Harddiskdrive(installedinsomemodels)5Opticaldrive

2Heatsink6Memorymodule

3Internalspeaker(installedinsomemodels)

7Powersupplyassembly

4Systemfanassembly

Locatingpartsonthesystemboard

Figure4“Systemboardpartlocations”onpage9showsthelocationsofthepartsonthesystemboard.

Figure4.Systemboardpartlocations

1PCIcardslot

13Memoryslot3

2PCIExpressx16graphicscardslot

14Frontpanelconnector

3Internalspeakerconnector

15PS/2keyboardandmouseconnector

4Coverpresenceswitchconnector(Intrusionswitch

connector)

16Serial(COM)connector

5Battery17Frontaudioconnector

6Thermalsensorconnector1824-pinpowerconnector

7Microprocessorfanconnector19Powerfanconnector

8Microprocessor

20SATAconnectors(2)

94-pinpowerconnector

21eSATAconnector

10Memoryslot2

22FrontUSBconnectors(2)

11Memoryslot1

23ClearCMOS(ComplementaryMetalOxide

Semiconductor)/Recoveryjumper

12Memoryslot4

Chapter1.Productoverview9

Locatinginternaldrives

Internaldrivesaredevicesthatyourcomputerusestoreadandstoredata.Y oucanadddrivestoyour

computertoincreasestoragecapacityandenableyourcomputertoreadothertypesofmedia.Your

computercomeswiththefollowingfactory-installeddrives:

•A3.5-inchharddiskdriveinbay1(installedinsomemodels)

•Anopticaldriveinbay2

Internaldrivesareinstalledinbays.Inthismanual,thebaysarereferredtoasbay1,bay2,andsoon.Figure

5“Drivebaylocations”onpage10

showsthelocationsofthedrivebays.

Figure5.Drivebaylocations

Thefollowinglistdescribesthetypeandsizeofthedrivethatyoucaninstallineachbay:

1Bay1-Maximumheight:26.1mm(1.03inches)

3.5-inchharddiskdrive

2Bay2-Maximumheight:41.6mm(1.64inches)Opticaldrive

10ThinkCentreUserGuide

Chapter2.Installingorreplacinghardware

Thischapterprovidesinstructionsonhowtoinstallorreplacehardwareforyourcomputer.

Handlingstatic-sensitivedevices

Donotopenthestatic-protectivepackagecontainingthenewpartuntilthedefectiveparthasbeenremoved

fromthecomputerandyouarereadytoinstallthenewpart.Staticelectricity,althoughharmlesstoyou,can

seriouslydamagecomputercomponentsandparts.

Whenyouhandlepartsandothercomputercomponents,taketheseprecautionstoavoidstatic-electricity

damage:

•Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.

•Alwayshandlepartsandothercomputercomponentscarefully.HandlePCIcards,memorymodules,

systemboards,andmicroprocessorsbytheedges.Nevertouchanyexposedcircuitry.

•Preventothersfromtouchingthepartsandothercomputercomponents.

•Beforeyoureplaceanewpart,touchthestatic-protectivepackagecontainingtheparttoametal

expansion-slotcoverorotherunpaintedmetalsurfaceonthecomputerforatleasttwoseconds.This

reducesstaticelectricityinthepackageandyourbody.

•Whenpossible,removethenewpartfromthestatic-protectivepackaging,andinstallitdirectlyinthe

computerwithoutsettingthepartdown.Whenthisisnotpossible,placethestatic-protectivepackage

thatthepartcameinonasmooth,levelsurfaceandplacethepartonit.

•Donotplacethepartonthecomputercoverorothermetalsurface.

Installingorreplacinghardware

Thissectionprovidesinstructionsonhowtoinstallorreplacehardwareforyourcomputer.Youcanexpand

thecapabilitiesofyourcomputerandmaintainyourcomputerbyinstallingorreplacinghardware.

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”

intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre

SafetyandWarrantyGuide,goto:

http://www.lenovo.com/support

Notes:

1.UseonlycomputerpartsprovidedbyLenovo.

2.Wheninstallingorreplacinganoption,usetheappropriateinstructionsinthissectionalongwiththe

instructionsthatcomewiththeoption.

Installingexternaloptions

Youcanconnectexternaloptionstoyourcomputer,suchasexternalspeakers,aprinter,orascanner.For

someexternaloptions,youmustinstalladditionalsoftwareinadditiontomakingthephysicalconnection.

Wheninstallinganexternaloption,see“Locatingconnectorsonthefrontofyourcomputer”onpage6and

“Locatingconnectorsontherearofyourcomputer”onpage7

toidentifytherequiredconnector.Then,

usetheinstructionsthatcomewiththeoptiontohelpyoumaketheconnectionandinstallanysoftware

ordevicedriversthatarerequiredfortheoption.

11

Openingthecomputercover

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”

intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre

SafetyandWarrantyGuide,goto:

http://www.lenovo.com/support

Thissectionprovidesinstructionsonhowtoopenthecomputercover.

CAUTION:

Turnoffthecomputerandwaitthreetoveminutestoletthecomputercoolbefore

openingthecomputercover.

Toopenthecomputercover,dothefollowing:

1.Removeanymediafromthedrivesandturnoffallattacheddevicesandthecomputer.

2.Disconnectallpowercordsfromelectricaloutlets.

3.Disconnectthepowercords,Input/Outputcables,andanyothercablesthatareconnectedtothe

computer.See“Locatingconnectorsonthefrontofyourcomputer”onpage6and“Locatingconnectors

ontherearofyourcomputer”onpage7

.

4.Removeanylockingdevicethatsecuresthecomputercover,suchasanintegratedcablelock.See

“Integratedcablelock”onpage33.

5.Pressthecover-releasebuttonsonthesidesofthecomputerandpivotthecomputercoverupward.

Figure6.Openingthecomputercover

Accessingthesystemboardcomponentsanddrives

Thissectionprovidesinstructionsonhowtoaccessthesystemboardcomponentsanddrives.

Toaccessthesystemboardcomponentsanddrives,dothefollowing:

1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Openthecomputercover.See“Openingthecomputercover”onpage12.

3.Pivottheopticaldrivebayassemblyupwardtoaccesstheinternalcomponents.Onsomemodels,you

mightneedtoremovetheharddiskdrivetoaccesssomeinternalcomponents.See“Replacingthe

harddiskdrive”onpage18.

12ThinkCentreUserGuide

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Lenovo ThinkCentre M90 User guide

Lenovo ThinkCentre M90 User guide

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