Toshiba PROL550

2TroubleshootingProcedures

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SatelliteL550/ProL550SeriesMaintenanceManual

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Figure2-5ExternalUSBdevicetroubleshootingprocess

Contents

Main ToshibaPersonalComputer Satellite MaintenanceManual TOSHIBACORPORATION Page Preface Page Page TableofContents Page Page Page Page Page Page Page Chapter1 Contents Page Page 1.1Features Page Page Page Page Page SatelliteL550MaintenanceManual 1-7 File Name : LA-4981P OZ601 GM47/GM49 Page Page 1.22.5-inchHDD 1.3DVDSuperMulti(+-RDoubleLayer) 1.4PowerSupply Page 1.5Batteries Page Page Page Chapter2 Contents Page 2.1 TroubleshootingIntroduction 2.2 TroubleshootingFlowchart A Figure2-1Troubleshootingflowchart(1/2) A Figure2-1Troubleshootingflowchart(2/2) Page Page 2.3 PowerSupplyTroubleshooting END Page Page Page Page 2.4 DisplayTroubleshooting Figure2-3Displaytroubleshootingprocess Page Page SatelliteL550/ProL550SeriesMaintenanceManual 2.5 KeyboardTroubleshooting Figure2-4Keyboardtroubleshootingprocess testandDiagnostics TestsandDiagnostics 2.6ExternalUSBDevicesTroubleshooting Page Page 2.7TouchPadTroubleshooting Page 2.8SpeakerTroubleshooting Figure2-7Speakertroubleshootingprocess Page 2.9 WirelessLANTroubleshooting Page 2.10 CameraTroubleshooting Page 2.11 BluetoothTroubleshooting Page 2.123in1cardTroubleshooting Page 2.13 HDD/SSDTroubleshooting Page 2.14CRTTroubleshooting Page 2.15LANTroubleshooting Page 2.16MICTroubleshooting 2.17ButtonTroubleshooting Page Page 2.18 modemTroubleshooting Figure2-17Modemtroubleshootingprocess Page 2.19 ExpresscardTroubleshooting Figure2-18Expresscardtroubleshootingprocess Page 2.20 HDMITroubleshooting Page 2.21E-SATATroubleshooting Page 2.22 OpticalDriveTroubleshooting Page Page Page Page 3.1TheDiagnosticTest 3.2ExecutingtheDiagnosticTest Page Page Page 3.3 DisplayConfiguration 3.4Audiosoundtest 3.5FanON/OFFTest 3.6MainBatteryChargeTest 3.7FDDTest Page Page Page Page 3.10Mouse(Pad)Test 3.11LCDPixelsModeTest 3.12MagneticSwitchTest Page 3.13LANTest Page Page 3.14RTCTest 3.15BUTTONTEST Page Page Page 3.17ReadDMI 3.18WriteDMI Page 3.18HDCPKeyCheck Page Page Page Chapter4 Contents Page Page Page Page 4.1General SatelliteL550MaintenanceManual 4-2 Page Page Page Page Page Page 4.2Battery Page 4.3HDD Page Page 4.4Memory Page 4.5ODD Page Page 4.6KeyboardCoverandKeyboard Page Page 4.7LogicUpperAssembly Page Page 4.8FunctionBoard 4.9BluetoothCard Page 4.10TouchPadButtonBoardandBracket Page 4.11Speakers Page 4.12DisplayAssembly Page 4.13ThermalFan 4.14Motherboard Page Page Page 4.15USBBoard 4.16ODDBoard 4.17ThermalModuleandVGABoard(Optional) Page Page 4.18CPU Page 4.19WLANCard 4.20ModemCard(Optional) 4.21LCDBezelAssembly Page Page Page Page 4.22LCDModule Page Page Page Page 4.23CMOSBoardandMicrophone(Optional) AppendixA HandlingtheLCDModule PrecautionsforhandlingtheLCDmodule Page Page Page Page AppendixB BoardLayout B.1 SystemBoardTopView B.2 SystemBoardBottomView TableB-1SystemBoardICs(topandbottom) ClockGenerator(SLG8SP556VTR) TableB-2SystemBoardConnectors(topandbottom) Page AppendixC PinAssignments SystemBoard C.1 JFAN TableC-1FANI/Fpinassignments(3-pin) C.2 JLVDS TableC-2LVDSI/Fpinassignments(40-pin) C.3 JCRT TableC-3CRTpinassignments(15-pin) TableC-5FingerPrinterConnectorpinassignments(4-pin) C.4 JHDMI TableC-4HDMII/Fpinassignments(19-pin) C.6 JHDD TableC-6HDDI/Fpinassignments(22-pin) C.7 JODD TableC-7SATAODDI/Fpinassignments(14-pin) Page C.11 JWLAN TableC-11WLANConnectorpinassignments(52-pin) C.12 JEXP TableC-12NewCardConnectorpinassignments(26-pin) TableC-13LANConnectorpinassignments(14-pin) C.13 JLAN C.14 JUSBB C.15 JDDRL,JPDDRH TableC-15SODIMMI/Fpinassignments(200-PIN)(2/4) TableC-15SODIMMI/Fpinassignments(200-PIN)(3/4) TableC-15SODIMMI/Fpinassignments(200-PIN)(4/4) C.16 JLINE C.17 JMIC C.18 JKB1 C.19 JREAD C.20 JMXM TableC-20VGA/BConnectorpinassignments(200-PIN)(1/4) TableC-20VGA/BConnectorpinassignments(200-PIN)(2/4) TableC-20VGA/BConnectorpinassignments(200-PIN)(3/4) TableC-20VGA/BConnectorpinassignments(200-PIN)(4/4) Page C.21 JEXMIC C.22 JSPK C.23 JPOWER C.24 JMDC TableC-24MDCconnectorpinassignments(12-pin) C.25 JPCM TableC-25CardBusconnectorpinassignments(68-pin) Page AppendixD KeyboardScan/CharacterCodes TableD-1Scancodes(set1andset2)(1/4) TableD-1Scancodes(set1andset2)(2/4) TableD-1Scancodes(set1andset2)(3/4) Page SatelliteA350/A350DSeriesMaintenanceManual D-5 TableD-2ScancodeswithleftShiftkey D-6 SatelliteA350/A350DSeriesMaintenanceManual TableD-3ScancodesinNumlockmode Keytop TableD-4ScancodeswithFnkey Cap No. C5 TableD-5Scancodesinoverlaymode TableD-6No.124keyscancode Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page SatelliteL550/ProL550SeriesMaintenanceManuall F-1 AppendixF SeriesScrewTorqueList(KTWAA) TableF-1SeriesScrewTorqueList SCREWP/N SCREW SPEC Q'ty F-2 SatelliteA350/A350DSeriesMaintenanceManual SatelliteL550/ProL550SeriesMaintenanceManuall F-3 AppendixG Reliability TableG-1MTBF