Toshiba PROL550 Laptop User Manual


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2TroubleshootingProcedures
SatelliteL550/SatelliteL555/SatelliteL557/SatelliteProL550
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Todetermineifthecomputer’sbuilt-inspeakersarefunctioningproperly,performthe
followingprocedures.Figure2-10outlinestheprocess.Firstadjustthespeakervolumetoan
appropriatelevel.StartwithProcedure1andcontinueasinstructed.
Procedure1: Audiosourcetest
Procedure2: Earphonetest
Procedure3: Connectioncheck
Procedure4: Replacementcheck
Procedure1 Audiosourcetest
Trydifferentaudiosources(e.g.anaudioCDanddigitalmusicfile)todeterminewhetherthe
faultisinthespeakersystemornot.Ifnotallsourceshavesoundproblem,theproblemisin
themonauraldevices.Ifallhavethesameproblem,continuewithProcedure2.
Procedure2 Earphonetest
Connectasetifearphonesorexternalspeakers.Ifthesefunctioncorrectly,gotoProcedure3.
Iftheydonotfunctioncorrectly,thesystemboardmaybedefectiveordamaged.Replaceit
withanewone.
Procedure3 Connectioncheck
DisassemblethecomputerfollowingthestepsdescribedinChapter4,Replacement
Proceduresandmakesurethespeakercableisfirmlyconnectedtotheaudioboard.Ifthe
speakersarestillnotfunctioningproperly,gotoProcedure4.
Procedure4 Replacementcheck
Ifthestereospeakersdon'tsoundproperly,thestereospeakersmaybedefectiveordamaged.
Replacethemwithnewones.Ifthestereospeakersstilldonotworkproperly,tryreplacingin
turntheaudioboardandsystemboard.
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