User's Manual

Table3.Errormessages(continued)
Symptomorerror
FRUoraction,insequence
Thissystemdoesnotsupportbatteriesthatarenot
genuineLenovo-madeorauthorized.Thesystemwill
continuetoboot,butmaynotchargeunauthorized
batteries.
Attention:Lenovohasnoresponsibilityforthe
performanceorsafetyofunauthorizedbatteries,and
providesnowarrantiesforfailuresordamagearisingout
oftheiruse.
Replacethebattery.
TheconnectedACadapterhasalowerwattagethanthe
recommendedmodelwhichwasshippedwiththesystem.
Thiswillincreasethetimetochargethebattery,and
systemperformancewillbeadjustedtomatchthe
availablepower.
PleaseconnecttheACadapterwhichwasshippedwith
thesystemforbestsystemperformance.
PresstheESCkeytocontinue.Dockingstationis
removedoritsIDisdifferent,pressF3topoweroff
systemandrestorecorrectdockingstation,pressF4to
normalboot.
Chargetheacpoweradapter.
Beepsymptoms
Table4.Beepsymptoms
Symptomorerror
FRUoraction,insequence
Onebeepandablank,unreadable,orashingLCD.1.ReseattheLCDconnector
2.LCDassembly
3.ExternalCRT
4.Systemboard
Onelongandtwoshortbeeps,andablankorunreadable
LCD.
1.Systemboard
2.LCDassembly
3.DIMM
Twoshortbeepswitherrorcodes.
POSTerror.SeeNumericerrorcodes.
Twoshortbeepsandablankscreen.
1.Systemboard
2.DIMM
Twoormorebeeps,oracontinuousbeep.Operating
systemstartssuccessfully.
Ifamini-PCIEthernetcardisinstalled,conrmthatAlert
OnLAN2inThinkPadSetupisdisabled.
Threeshortbeeps,pause,threemoreshortbeeps,and
oneshortbeep.
Oneshortbeep,pause,threeshortbeeps,pause,three
moreshortbeeps,andoneshortbeep.
1.DIMM
2.Systemboard
Onlythecursorappears.
Reinstalltheoperatingsystem.
Fourcyclesoffourshortbeepsandablankscreen.
Systemboard(securitychip)
Fiveshortbeepsandablankscreen.
Systemboard
42ThinkPadT520,T520i,andW520HardwareMaintenanceManual