Toshiba Qosmio F50 Laptop User Manual


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TroubleshootingProcedures
QOSMIOF50-QOSMIOF55-DYNABOOKQOSMIOF50SeriesMaintenanceManual
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Thissectiondescribeshowtodetermineifthecomputer'smodemisfunctioningproperly.
Figure2-12outlinestheprocess.PerformthestepsbelowstartingwithProcedure1and
continuingwiththeotherproceduresasrequired.
Procedure1: Telephonelineconnectioncheck
Procedure2: Modemcardconnectioncheck
Procedure3: Modemcardreplacementcheck
Procedure1 Telephonelineconnectioncheck
Thetelephonecablemaybedamagedortheconnectionsmaybeloose.Usewindows
applicationtocheckdevicecanworkfineornot.Attempttoconnectthecomputertoa
networkthroughusingthemodem.Ifthemodemdoesnotfunctionatall,gotoProcedure3.
Iftheattemptfailsbecausethecomputerdetectsnotelephonesignal,thefaultmaybeinthe
telephonecable,thewallsocketorthemodemport.PerformCheck1:
Check1 Makesuretelephonecableisfirmlypluggedintoboththetelephonewallsocket
andthemodemportofthecomputer.Ifthecableisconnectedcorrectly,goto
Check2.
Check2 Makesurethemodemportisfirmlysecuredtothesystemboardofthecomputer.
Ifthemalfunctionremains,gotoCheck3.
Check3 Thetelephonecablemaybedamaged.Replacewithagoodcable.Ifthe
malfunctionremains,gotoProcedure2.
Procedure2 Modemcardconnectioncheck
DisassemblethecomputerfollowingthestepsdescribedinChapter4,Replacement
Proceduresandensurethatthemodemcardiswellconnectedtothesystemboard.Ifthe
problempersists,performProcedure3.
Procedure3 Modemreplacementcheck
ThemodemcardorRJ-11jackmaybefaulty.Tryreplacingthem.Iftheproblempersists,the
systemboardmaybedefectiveordamaged.ReplacetheSystemBoardwithanewone
followingthestepsinChapter4,ReplacementProcedures.
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