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2TroubleshootingProcedures
SatelliteL550/ProL550SeriesMaintenanceManual
1
Chapter2 Contents
2.1 TroubleshootingIntroduction.......................................................................................3
2.2 TroubleshootingFlowchart...........................................................................................4
2.3 PowerSupplyTroubleshooting.....................................................................................9
2.4 DisplayTroubleshooting...............................................................................……….14
2.5 KeyboardTroubleshooting.........................................................................................17
2.6 ExternalUSBDevicesTroubleshooting.....................................................................19
2.7TouchPadTroubleshooting........................................................................................22
2.8SpeakerTroubleshooting...........................................................................................24
2.9WirelessLANTroubleshooting………………………………………………………..26
2.10Cameratroubleshooting.............................................................................................28
2.11BluetoothTroubleshooting…………………...…………………………….………....30
2.123in1cardTroubleshooting……………………………………………………..…….32
2-13HDD/SSDtroubleshootingprocess………………………….………………..............34
2-14CRTfailuretroubleshootingprocess…………………………………………………36
2-15LANTroubleshooting…………………………………………………………………38
2-16MICtroubleshootingprocess…………………………………………………………40
2-17BUTTONtroubleshootingprocess…………………………………………………….41
2.18Modemtroubleshootingprocess………………………………………………………..44
2.19Expresscardtroubleshootingprocess…………………………………………………...46
2.20HDMItroubleshootingprocess………………………………………………………….48
2.21E-SATAtroubleshootingprocess……………………………………………………….50
2.22OpticalDriveTroubleshooting………………………………………………………….52