ThinkPad E550 - Error Messages; Beep Symptoms; No-Beep Symptoms

Errormessages
Table3.Errormessages
Symptomorerror(beeps,ifany)
FRUoraction,insequence
Fanerror.
(fourshortbeeps,onelongbeep)
1.Replacethefan.
2.Applythermalgrease.
3.Replacethesystemboard.
Thermalsensingerror.Replacethesystemboard.
Thebatteryinstalledisnotsupportedbythissystemand
willnotcharge.
PleasereplacethebatterywiththecorrectLenovobattery
forthissystem.
PresstheESCkeytocontinue.
Replacethebattery.
Thissystemdoesnotsupportbatteriesthatarenot
genuineLenovo-madeorauthorized.Thesystemwill
continuetoboot,butmaynotchargeunauthorized
batteries.
Attention:Lenovohasnoresponsibilityforthe
performanceorsafetyofunauthorizedbatteries,and
providesnowarrantiesforfailuresordamagearisingout
oftheiruse.
Replacethebattery.
Beepsymptoms
Table4.Beepsymptoms
Symptomorerror
FRUoraction,insequence
Oneshortbeep,pause,threeshortbeeps,pause,three
moreshortbeeps,pause,andoneshortbeep
1.Replacethememorymodule.
2.Replacethesystemboard.
Onelongandtwoshortbeeps
Replacethesystemboard.
FiveshortbeepsReplacethesystemboard.
No-beepsymptoms
Table5.No-beepsymptoms
Symptomorerror
FRUoraction,insequence
Nobeep,power-onindicatoron,LCDblank,andno
POST.
1.Ensurethateveryconnectorisconnectedtightly
andcorrectly.
2.Reseatmemorymodule.
3.Replacethesystemboard.
Nobeep,power-onindicatoron,andLCDblankduring
POST.
1.Reseatmemorymodule..
2.Replacethesystemboard.
Thepower-onpasswordpromptappears.Apower-onpasswordorasupervisorpasswordisset.
TypethepasswordandpressEnter.
Thehard-diskpasswordpromptappears.Ahard-diskpasswordisset.Typethepasswordand
pressEnter.
46HardwareMaintenanceManual