Thefollowingtabledescribesthebeepsymptoms.
BeepsymptomFRU/Action
2shortbeepsCommonPOSTErrorCommonerrorcode,seethedetailfailureinformationin
“POSTerrorcodes”onpage64.
3shortand1longbeepsDRAMmemoryerror
Performthefollowingactionsinorder.
1.Makesurethememorymodule(s)areproperlyseated
intheconnector(s).
2.Replacethememorymodule(s).
3.Replacethesystemboard.
POSTerrorcodes
Eachtimeyoupower-onthesystem,itperformsaseriesofteststhatchecktheoperationofthesystem
andsomeoptions.ThisseriesoftestsiscalledthePower-OnSelf-Test,orPOST.POSTdoesthefollowing
operations.
•Checkssomebasicsystem-boardoperations
•Checksthememoryoperation
•Startsthevideooperation
•Verifiesthatthebootdriveisworking
IfthePOSTdetectsaproblem,anerrormessageappearsonthescreen.Asingleproblemcancauseseveral
errormessagestoappear.Whenyoucorrectthecauseofthefirsterrormessage,theothererrormessages
probablywillnotappearonthescreenthenexttimeyouturnonthesystem.
ErrorcodePOSTerrormessageDescription/Action
0135
Fanfailure
Thesystemmightbeoverheating.
PressF10toexit.
Note:Iftheproblemiscausedbythe
microprocessorfan,pressF10will
notsolvetheproblem.
0211
Keyboardnotfound
Whenthereisnokeyboarddetected,
theerrormessagewillbedisplayed.
0164MemorysizedecreasedPressF10toexit.
1762
Configurationchangehasoccurred
Thiserrormessageisdisplayedwhen
aharddiskdriveoropticaldrive
changehasbeenmade.
PressF10toexit.
1820
Morethanoneexternalfingerprint
readerareattached.Poweroffand
removeallbutthereaderthatyouset
upwithinyourmainoperatingsystem.
Ifmorethanoneexternalfingerprint
readerareconnectedtoacomputer,
thiserrormessagewillbedisplayed
toinformyoutoremoveallofthe
fingerprintkeyboardsexceptthe
onecompatiblewiththefingerprint
applicationonyourcomputer.
1962
Nooperatingsystemfound.Boot
sequencewillautomaticallyrepeat.
ThiserroroccursonlyafterthePOST
iscompleted.Bootsequencewill
automaticallyrepeat.
64ThinkCentreM73HardwareMaintenanceManual
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