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Lenovo A720 manual - page 3

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IdeaCentreA720

HardwareMaintenanceManual

Contents

Main Page Page Page Contents Chapter1.Aboutthismanual......1 Chapter2.Safetyinformation......3 Chapter3.Generalinformation.....9 Chapter4.GeneralCheckout.....11 Chapter5.UsingtheSetupUtility...13 Page Chapter1.Aboutthismanual ImportantSafetyInformation Page Chapter2.Safetyinformation Generalsafety Electricalsafety Page Safetyinspectionguide Handlingelectrostaticdischarge-sensitivedevices Groundingrequirements Safetynotices Page Page Chapter3.Generalinformation Specications Page Chapter4.GeneralCheckout Page Chapter5.UsingtheSetupUtility StartingtheLenovoBIOSSetupUtilityprogram Viewingandchangingsettings Usingpasswords Page Enablingordisablingadevice Selectingastartupdevice ExitingtheLenovoBIOSSetupUtilityprogram Page Chapter6.Symptom-to-FRUIndex Harddiskdrivebooterror PowerSupplyProblems POSTerrorcodes Undeterminedproblems Chapter7.Locatingconnectors,controlsandcomponents Page Page Hardwarecomponents Thefollowingillustrationshowsthecomponentsthatmakeupyourcomputer. 24 Page Page Page Page Chapter8.Replacinghardware Generalinformation Replacingthekeyboardandmouse Replacingthepowercordorpoweradapter Removingthebasecover Replacingtheharddiskdrive Page Replacingamemorymodule Replacingthesystemfan Replacingtheheat-sink ReplacingtheCPU Page Replacingtheopticaldrive Page Replacingthesolidstatedisk Replacingtheopticaldriveejectboard Replacingthemotherboard Page Replacingthespeakersystem Page ReplacingtheTVtunercard Replacingthebattery Removingthehingefromthechassis Page Removingtherearcover Replacingthescalarboard Page Replacingthetouchcontrolboard Replacingtheconverterboard Replacingthepowerswitchboard ReplacingtheBluetoothmodule ReplacingtheWLANcar d Replacingthecamera Replacingthefrontfunctionboard ReplacingtheLEDpanel Page FRUlists 62 Page 64 Page 66 Page Page Chapter9.Generalinformation AdditionalServiceInformation

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