Lenovo N20 Chromebook User Manual

HardwareMaintenanceManualLenovoN20Chromebook

GroundingrequirementsElectricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrectsystemfunction.Propergroundingoftheelectricaloutletcanbeveri

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Chapter2.GeneralcheckoutThischaptercontainsthefollowingtopics:Beforeyougotothecheckoutinstructions,ensurethatyoureadthefollowingimportantnotes.Importa

•Damagecausedbytheimproperinsertionofapersonal-computercard(PCcard)ortheinstallationofanincompatiblecard•Improperdiscinsertionoruseofanexternaloptical

Chapter3.IdetifyingFRUs(CRUs)AllFRUs(CRUs)forLenovoN20ChromebookTheexplodedillustrationshelpLenovoservicetechniciansidentifyFRUsorCRUsthattheymayneedt

13856241171091312Figure1.N20explodedview22HardwareMaintenanceManual

Table1.FRU(CRU)categoriesNo.FRU(CRU)categoryCRUID1LCDmoduleN2Keyboard**3UppercaseN4TouchpadcableN5dc-inconnectorbracketN6dc-inconnectorN7SystemboardN8

HardwareMaintenanceManualLenovoN20Chromebook

Table2.FRUcategoriesfortheLCDmodule(continued)2HingecoversN3LCDpanelN4LCDcableN5HingesN6WLANantennasN7CameraboardN8CameracableN9LCDbasecoverNLenovopar

Table3.PartnumbersforFRUs(CRUs)(continued)Iceland75KeyST1CCCYBlackKeySilverFrame25216096Slovenian75KeyST1CCCYBlackKeySilverFrame25216097Swiss75KeyST1C

Table3.PartnumbersforFRUs(CRUs)(continued)TouchPadCableCN205C10G150065dc-inconnectorbracketDC-INBracketCN205B40G150326dc-inconnectorDC-INCableCN205C10

Table4.PartnumbersforLCDFRUs(continued)LCDCableCN205C10G150085HingesHingeL+RCN205H50G150246WLANantennasAntennaCN20WIFI5A30G150467CameraboardCameraCN20

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Chapter4.RemovingaFRUorCRUGeneralguidelinesWhenremovingorreplacingaFRU,ensurethatyouobservethefollowinggeneralguidelines:1.Donottrytoserviceanycompute

Step3.TurnovertheChromebookagainandthenopentheLCDcover.Step4.Liftthekeyboardbyitsupperedge2andthenslowlyliftitup3untilthekeyboardsocketappears.bFigure

RemovetheuppercaseMakesurethefollowingFRUs(CRUs)havebeenremoved:“Removethekeyboard”onpage29Step1.Prythetworubbersoutoftheirrecesses.Figure6.Pryrubbers

dcFigure8.UnplugtouchpadcableStep6.Removethe9screws5;useascrapcreditcardorasimilarplasticcardtoslidethroughthegroovesbetweentheuppercaseandthebasecove

RemovetheWLAN&BluetoothcombomoduleMakesurethefollowingFRUs(CRUs)havebeenremoved:“Removethekeyboard”onpage29“Removetheuppercase”onpage31Step1.Disco

FirstEdition(May2014)©CopyrightLenovo2014.

RefertoTable3“PartnumbersforFRUs(CRUs)”onpage24tolookuptheLenovopartnumbersofreplacementWLAN&Bluetoothcombomodules.RemovetheLCDmoduleMakesurethefo

ddFigure15.LiftuptheLCDmoduleTable8.Screwspecifications—removingtheLCDmoduleScrewlabelSpecificationsColorTorque3M2.5×4mm,flat-head,nylon-coatedBlack3.7–4

aFigure16.Unplugthedc-incableStep2.Removethetwoscrews2andthenremovethemetalbracket3thatfastensthedc-inconnector.bbcFigure17.Remove2screwsStep3.Removet

dFigure18.Removethedc-inconnectorTable9.Screwspecifications—removingthedc-inconnectorScrewlabelSpecificationsColorTorque2M2×3mm,flat-head,nylon-coatedSil

decFigure20.RemovethebatterypackStep3.Removethescrew4andthenremovethebatterypack5.Table10.Screwspecifications—removingthebatterypackScrewlabelSpecificat

RefertoTable3“PartnumbersforFRUs(CRUs)”onpage24tolookuptheLenovopartnumbersofreplacementspeakers.RemovethesystemboardandtheI/OboardMakesurethefollowin

DisassembletheLCDmoduleTheLCDmoduleasawholeisnotaFRU.ItcontainsFRUsasitscomponents.BeforedisassemblingtheLCDmodule,makesureithasbeendetachedfromthebas

Table11.Screwspecifications—removingtheLCDbezelScrewlabelSpecificationsColorTorque2M2.5×5mm,flat-head,nylon-coatedSilvery3.7—4.0kgf*cmRefertoTable4“Partn

RefertoTable4“PartnumbersforLCDFRUs”onpage26tolookuptheLenovopartnumbersofthefollowingreplacementparts:LCDpanelLCDcableRemovethehinges,theLCDcable,and

RemovethecameraboardandthecameracableMakesurethefollowingFRUs(CRUs)havebeenremoved:“RemovetheLCDbezel”onpage40“RemovetheLCDpanel”onpage41“Removethehin

ContentsChapter1.Safetyinformation...1Generalsafety...1Electricalsafety...1Safetyinspectionguide...2Handlingdevicesth

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AppendixA.Features,controls,andconnectorsFigure32.N20ChromebookfeaturesandconnectorsTable14.N20ChromebookfeaturesandconnectorsNo.Featureorconnector1In

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AppendixB.LenovopartnumbersofscrewsusedonN20ChromebookTable15.PartnumbersofN20screwsScrewdescriptionPartnumberSCREWN20MM22.0D2LK7D5S10G15012SCREWN20MM

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AppendixC.LenovopartnumbersofacadaptersandpowercordsTable16.PartnumbersforFRUs(CRUs)CRUcategoryPartsdescriptionLenovopartnumberacpoweradapterDeltaADLX

Table16.PartnumbersforFRUs(CRUs)(continued)LongwellLP-71+VCTF+LS-33145000556VOLEXTW15CS3+VCTF+VAC5S145000531lux0019+VCTF0.75/3C+0021145500007LINETEKLS

AppendixD.LabellocationsabdeCFigure33.LabellayoutonthebacksideofthebasecoverTable17.AllbasecoverlabelsLabelLabeldescriptionCountryorregionDimensionsPa

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TrademarksLenovoandthe“lenovo”logoaretrademarksofLenovointheUnitedStates,othercountriesorboth:Othercompany,product,orservicenamesmaybetrademarksorserv

ivHardwareMaintenanceManual

Chapter1.SafetyinformationThischapterpresentsthefollowingsafetyinformationthatyouneedtobefamiliarwithbeforeyouserviceaLenovonotebookcomputer.Generalsa

–Removingorinstallingmainunits•Beforeyoustarttoworkonthemachine,unplugthepowercord.Ifyoucannotunplugit,askthecustomertopower-offthewallboxthatsupplies

Todeterminewhetherthereareanypotentiallyunsafeconditions,usethefollowingchecklistatthebeginningofeveryservicetask.Beginthecheckswiththepoweroff,andthe