Toshiba Qosmio F50 2.3 PowerSupplyTroubleshooting

2TroubleshootingProcedures
QOSMIOF50-QOSMIOF55-DYNABOOKQOSMIOF50SeriesMaintenanceManual 
 9 
2.3 PowerSupplyTroubleshooting
ST A R T
A re th e D C-IN a nd
B a tte ryL E D slit?
Ca n yo uturnthe
co mp uteron ?
Areth eintern alpo wer
connectionssecu re?
E N D
CheckPo werSup plyStatus
(P rocedure1 )
Checkpowe rsupp ly
connections
(P rocedure3 )
Rundiagno sticprogram
(P rocedure4 )
Rep lacead ap tor/batte ry
(P rocedure2 )
P er fo rm in te rn alco n ne ctio n
ch ec k
(P rocedure5 )
R e pla ce sy ste m b o ard

Figure2-2PowerSupplyTroubleshootingProcess
Thepowersupplycontrolsmanyfunctionsandcomponents.Todetermineifthepower
supplyisfunctioningproperly,startwithProcedure1andcontinuewiththeotherProcedures