Toshiba L517 Personal Computer User Manual


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2.4 SystemBoard 2Troubleshooting
Satellite/SatelliteProL510/L515/L517MaintenanceManual 2-9
2.4 SystemBoard
Tocheckifthesystemboardisdefectiveormalfunctioning,followthetroubleshooting
proceduresbelowasinstructed.
Procedure1MessageCheck
Procedure2TestProgramCheck
Procedure3ReplacementCheck
Procedure1MessageCheck
Whenthepoweristurnedon,thesystemperformstheself-diagnosticPowerOnSelfTest
(POST)embeddedintheBIOSROM.ThePOSTtestsandinitializeseachIConthesystem
board.
Ifanerrormessageappearsonthedisplay,performCheck1.
Ifthereisnoerrormessage,gotoProcedure2.
IfFREE-DOSorWindowsVistaHomeEditionisloadednormally,gotoProcedure3.
Check1 Ifthefollowingerrormessageisdisplayedonthescreen,presstheF1key
asprompted.Theseerrorsoccurwhenthesystemconfigurationpreserved
intheRTCmemory(generallycalledCMOSmemory)doesnotmatchthe
actualconfigurationorwhenthedataislost.
IfyoupresstheF1keyaspromptedbythemessage,theSETUPscreen
appearstosetthesystemconfiguration.Iftheerrormessageappears
frequentlywhenthepoweristurnedon,replacetheRTCbattery.Ifany
othererrormessageisdisplayed,performCheck2.
***BadRTCbattery***
Checksystem.Thenpress[F1]key
Check2 Ifthefollowingerrormessageisdisplayedonthescreen,pressanykeyas
promptedbythemessage.
TheerrormessageappearswheneitherdatastoredinRAMtoberesumed
islostbecausethebatteryhasbeenexhaustedorthesystemboardisfaulty.
Ifanyothererrormessagedisplays,performCheck3.
Check3Resumefailureandpressanykeytocontinue.
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