Toshiba Qosmio F50 Laptop User Manual


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2TroubleshootingProcedures
QOSMIOF50-QOSMIOF55-DYNABOOKQOSMIOF50SeriesMaintenanceManual
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Procedure3 Connectorandreplacementcheck
TheFLinverterboard,LCDmodule,andsystemboardareconnectedtothedisplaycircuits.
Anyofthesecomponentsmaybedamaged.RefertoChapter4,ReplacementProcedures,for
instructionsonhowtodisassemblethecomputerandthenperformthefollowingchecks:
Check1 MakesuretheDDRRAMmoduleisseatedproperly.Testdisplayagain.Ifthe
problemstillexits,replacetheDDRRAMmodule.Iftheproblemstillexists,
performCheck2.
Check2 ReplacetheFLinverterboardwithanewoneandtestdisplayagain.Ifthe
problemstillexists,performCheck3.
Check3 ReplacetheLCDmodulewithanewoneandtestdisplayagain.Iftheproblem
stillexists,performCheck4.
Check4 ReplacetheLCD/FLcablewithanewoneandtestdisplayagain.Iftheproblem
stillexists,performCheck5.
Check5 ReplacetheCPUwithanotherofthesamespecifications.Iftheproblemstill
exists,performCheck6.
Check6 Thesystemboardmaybedamaged.Replaceitwithanewone.
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