User Guide

56 TroubleshootingProcedures
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QOSMIOF50-QOSMIOF55-DYNABOOKQOSMIOF50SeriesMaintenanceManual
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Figure2-20SPDIFtroubleshootingprocess
ThesystemboardmaybethereasonofaSPDIFfault.Theconnectorofsystemboardmaybe
damaged.Todetermineifthecomputer’sSPDIFisfunctioningproperly,performthe
followingprocedures.Figure2-14outlinestheprocess.StartwithProcedure1andcontinue
withtheotherproceduresasinstructed.
Procedure1: windowsapplicationtest
Procedure2: Connectorandreplacementcheck
Procedure1 windowsapplicationtest
Usewindowsapplicationtocheckdevicecanworkfineornot.
IftestsanddiagnosticsresultabnormalgotoProcedure2.Ifanerrorisnotlocated,the
SPDIFisfunctioningproperly.
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Procedure2 Connectorandreplacementcheck
Thesystemboardmaybedisconnectedordamaged.Disassemblethecomputerfollowingthe
stepsdescribedinChapter4,ReplacementProcedure
s ,andperformthefollowingchecks.
Check1thesystemboardmaybedamaged.Replaceitwithanewonefollowingthe
instructionsinChapter4.
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