Hardware Maintenance Manual

Beepsymptoms
Table3.Beepsymptoms
Symptomorerror
FRUoraction,insequence
Oneshortbeep,pause,threeshortbeeps,pause,three
moreshortbeeps,pause,andoneshortbeep(1–3–3–1
beeps)
1.Replacethememorymodule.
2.Replacethesystemboard.
Onelongandtwoshortbeeps
Replacethesystemboard.
Threeshortbeeps,pause,oneshortbeep,pause,one
moreshortbeep,pause,andthreeshortbeeps(3–1–1–3
beeps)
Havethecomputerserviced.
Fourcyclesoffourshortbeeps
Replacethesystemboard.
Fiveshortbeeps,pause,fivemoreshortbeeps,and
pause
Replacethesystemboard.
FiveshortbeepsReplacethesystemboard.
No-beepsymptoms
Table4.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.Aharddiskpasswordisset.Typethepasswordand
pressEnter.
LCD-relatedsymptoms
Important:TheTFTLCDforthenotebookcomputercontainsmanythin-filmtransistors(TFTs).The
presenceofasmallnumberofdotsthataremissing,discolored,oralwayslightedischaracteristicofTFT
LCDtechnology,butexcessivepixelproblemscancauseviewingconcerns.IftheLCDyouareservicinghas
twoorlessvisibledefectivepixels,itshouldnotbeconsideredfaulty.However,iftheLCDhasthreeormore
visibledefectivepixels,itwillbedeemedasdefectivebyLenovoanditshouldbereplaced.
Notes:
•ThispolicyappliestoallThinkPadnotebookspurchasedon1January,2008orlater.
•LenovowillnotprovidewarrantyreplacementiftheLCDiswithinspecificationsbecausewecannot
guaranteethatanyreplacementLCDwillhavezeropixeldefects.
•OnepixelconsistsofR,G,Bsub-pixels.
Chapter4.Relatedserviceinformation37