Contents
Chapter1.Aboutthismanual......1
ImportantSafetyInformation..........1
Chapter2.Safetyinformation......3
Generalsafety................3
Electricalsafety...............3
Safetyinspectionguide............5
Handlingelectrostaticdischarge-sensitive
devices..................5
Groundingrequirements............6
Safetynotices................6
Chapter3.Generalinformation.....9
Specifications................9
Chapter4.GeneralCheckout.....11
Chapter5.UsingtheSetupUtility...13
StartingtheLenovoBIOSSetupUtilityprogram.13
Viewingandchangingsettings........13
Usingpasswords..............13
Enablingordisablingadevice........15
Selectingastartupdevice..........16
ExitingtheLenovoBIOSSetupUtilityprogram..17
Chapter6.Symptom-to-FRUIndex..19
Harddiskdrivebooterror..........19
PowerSupplyProblems...........19
POSTerrorcodes.............20
Undeterminedproblems...........20
Chapter7.Replacinghardware....21
Generalinformation.............21
Replacingthekeyboardandmouse......22
Replacingthepowercordorpoweradapter...22
Removingthebasecover..........23
Replacingtheharddiskdrive.........24
Replacingamemorymodule.........26
Replacingthesystemfan..........27
Replacingtheheat-sink...........28
Replacingthespeakersystem........29
Replacingthemotherboard..........30
Removingthehingefromthechassis......31
Removingtherearcover...........32
ReplacingtheTransformboard........35
ReplacingtheWi-Ficard...........36
Replacingthepowerswitchboard.......37
ReplacingtheNFCmodule..........38
Replacingthecamera............39
ReplacingtheLEDpanel...........40
A540FRUlists...............42
A740FRUlists...............46
Chapter8.Generalinformation....53
AdditionalServiceInformation........53
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