Lenovo B575e User manual

HardwareMaintenanceManual

LenovoB575e

Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadthegeneralinformation

underAppendixA“Notices”onpage93.

FirstEdition(July2012)

©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

Lasercompliancestatement(multilingual

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

Chapter2.Importantservice

information..............27

StrategyforreplacingFRUs.........27

Strategyforreplacingaharddiskdrive...28

Importantnoticeforreplacingasystem

board................28

ImportantinformationaboutreplacingRoHS

compliantFRUs..............28

Chapter3.Generalcheckout.....29

Whattodorst..............29

Powersystemcheckout...........30

Checkingtheacpoweradapter......30

Checkingoperationalcharging......31

Checkingthebatterypack........31

Chapter4.Relatedservice

information..............33

Recoveringthecomputersettings.......33

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

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

Supervisorpassword..........33

Powermanagement............34

Screenblankmode...........34

Sleepmode..............34

Hibernationmode...........34

Chapter5.LenovoB575e.......37

Specications...............37

Statusindicators..............38

Fnkeycombinations............39

Chapter6.FRUreplacement

notices................41

Screwnotices...............41

Chapter7.Removingandreplacinga

FRU..................43

1010Batterypack.............43

1020Bottomslotcover...........44

1030Harddiskdrive............45

1040Opticaldrive.............46

1050Memorymodules...........47

1060PCIExpressMiniCardforwirelessLAN..48

1070Backupbattery............50

1080Keyboard..............51

1090Keyboardbezel............54

1100LEDboardandpowerboard.......58

1110Microphoneassembly.........59

1120I/OboardandRJ45Ethernetboard....59

1130Systemboardassembly.........63

1140LCDunit...............65

1150Thermalfanassembly.........67

1160Speakerassembly...........69

1170DC-insubcardandbasecover......70

2010LCDfrontbezel............72

2020Integratedcamera...........74

2030LCDpanel,LCDcable,andhinges....74

2040Antennaassembly...........76

Chapter8.Locations.........79

Frontview................79

Bottomview...............80

Chapter9.Partslist..........81

Overall..................82

LCDFRUs................84

Keyboard.................85

Miscellaneousparts............88

acpoweradapters.............88

Powercords...............88

AppendixA.Notices..........93

Electronicemissionsnotices.........94

Trademarks................94

©CopyrightLenovo2012

i

iiHardwareMaintenanceManual

Aboutthismanual

ThismanualprovidesserviceandreferenceinformationforthefollowingLenovo

®

products.

Machine

Machinetype(MT)

LenovoB575e3685,20189

Usethismanualtotroubleshootproblems.

Themanualisdividedintothefollowingsections:

•Thecommonsectionsprovidegeneralinformation,guidelines,andsafetyinformationrequiredfor

servicingcomputers.

•Theproduct-specicsectionsincludeservice,reference,andproduct-specicpartsinformation.

Important:

•ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithLenovoproducts.Use

thismanualtotroubleshootproblemseffectively.

•BeforeservicingaLenovoproduct,besuretoreadalltheinformationunderChapter1“Safety

information”onpage1

andChapter2“Importantserviceinformation”onpage27.

©CopyrightLenovo2012

iii

ivHardwareMaintenanceManual

Chapter1.Safetyinformation

Thischapterpresentsthefollowingsafetyinformationthatyouneedtobefamiliarwithbeforeyouservicea

Lenovonotebookcomputer.

•“Generalsafety”onpage1

•“Electricalsafety”onpage2

•“Safetyinspectionguide”onpage3

•“Handlingdevicesthataresensitivetoelectrostaticdischarge”onpage3

•“Groundingrequirements”onpage4

•“Safetynotices(multilingualtranslations)”onpage4

•“Lasercompliancestatement(multilingualtranslations)”onpage19

Generalsafety

Followtheserulestoensuregeneralsafety:

•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.

•Whenliftinganyheavyobject:

1.Makesurethatyoucanstandsafelywithoutslipping.

2.Distributetheweightoftheobjectequallybetweenyourfeet.

3.Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempttolift.

4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe

musclesinyourback.Donotattempttoliftanyobjectthatweighsmorethan16kg(35lb)orthatyou

thinkistooheavyforyou.

•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,becausemetal

objectsaregoodelectricalconductors.

•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,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:

2HardwareMaintenanceManual

–Usecaution;donotbecomeavictimyourself.

–Switchoffpower.

–Sendanotherpersontogetmedicalaid.

Safetyinspectionguide

Thepurposeofthisinspectionguideistoassistyouinidentifyingpotentiallyunsafeconditions.Aseach

machinewasdesignedandbuilt,requiredsafetyitemswereinstalledtoprotectusersandservicetechnicians

frominjury.Thisguideaddressesonlythoseitems.Y oushouldusegoodjudgmenttoidentifypotential

safetyhazardsduetoattachmentofnon-Lenovofeaturesoroptionsnotcoveredbythisinspectionguide.

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-Lenovoalterations.Usegoodjudgmentastothesafetyofanynon-Lenovo

alterations.

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.

Chapter1.Safetyinformation3

2.MakesurethattheESDprotectivedevicesyouusehavebeencerti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

•TraditionalChinese

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Lenovo B575e User manual

Lenovo B575e User manual

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