2TroubleshootingProcedures
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SatelliteL550/ProL550SeriesMaintenanceManual
7
Ifthediagnosticsprogramcannotdetectanerror,theproblemmaybeintermittent.Thetest
programshouldbeexecutedseveraltimestoisolatetheproblem.Whenaproblemhasbeen
located,performtheappropriatetroubleshootingproceduresasfollows:
1.Ifanerrorisdetectedbythebatterytest,performthePowerSupplyTroubleshooting
proceduresinSection2.3
2.Ifanerrorisdetectedbythedisplaytest,performtheDisplayTroubleshooting
proceduresinSection2.4
3.Ifanerrorisdetectedbythekeyboardtest,performtheKeyboardTroubleshooting
proceduresinSection2.5
4.IfanerrorisdetectedbytheTouchPadtest,performtheTouchPadTroubleshooting
proceduresinSection2.7
5.Ifanerrorisdetectedbytheaudiotest,performtheSpeakerTroubleshooting
proceduresinSection2.8andtheOpticalDriveTroubleshootingProceduresin
Section2.9