2TroubleshootingProcedures
 
SatelliteL500D/ProL500DMaintenanceManual
43
Procedure1 Diagnostictest
RunthefunctioningProgramonWindowsmodelorDOSmodel,whichwilldisplaythetest
result.
IftestsanddiagnosticsresultabnormalgotoProcedure2.Ifanerrorisnotlocated,thebutton
functioningisproperly.
Procedure2 Replacementcheck
DisassemblethecomputerfollowingthestepsdescribedinChapter4,Replacement
Procedures,andperformthefollowingchecks.
Check1 MakesurethatButtontestoperationiscorrect,gotoCheck2.
Check2MakesurethattheFFCofthebuttonisassembleOK,gotoCheck3
Check3 Thebuttonmaybedamaged.Replaceitwithanewonefollowingthe
instructionsinChapter4.