2.4SystemBoard 2Troubleshooting
SatelliteL300D/L305D/SatelliteProL300D/EQUIUML300D/SATEGOL300D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TSETUP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.