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Toshiba P25 manual Troubleshooting Procedures

Models: P25

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2 Troubleshooting Procedures

2-ii	Satellite P20-25 Series Maintenance Manual

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Toshiba P25 manual Troubleshooting Procedures

Contents

Toshiba Corporation Trademarks CopyrightDisclaimer Preface Safety PrecautionsSatellite P20-25 Series Maintenance Manual Acronyms ConventionsSatellite P20-25 Series Maintenance Manual Table of Contents Tests and Diagnostics CPU HDD Replacement ProceduresAppendices Hardware Overview Hardware Overview Chapter Contents Hardware Overview Features Hardware Overview FeaturesHardware Overview Features Features Hardware Overview Hardware Overview Features System Unit Hardware Overview System UnitHardware Overview System Unit AUX Hardware Overview Removable Drives 2.5-inch Hard Disk Drive1 3.5-inch Floppy Disk Drive Removable DrivesRemovable Drives Hardware Overview Read speeds DVD-R/-RW DriveMatsushita SR-8177 256 Kbytes Max Toshiba SD-C2612 DVD-ROM DriveDVD Multi-Drive CD-RW Combo DriveHardware Overview Power Supply Power SupplyLB2 Power Supply Hardware OverviewHardware Overview Batteries Main BatteryBatteries Satellite P20-25 Series Maintenance Manual Status Time RTC batteryBatteries Hardware Overview Chapter Troubleshooting Procedures Troubleshooting Procedures Chapter Contents Tables FiguresTroubleshooting Introduction Troubleshooting Procedures Troubleshooting IntroductionTroubleshooting Procedures Troubleshooting Flowchart Troubleshooting FlowchartTroubleshooting flowchart 1/2 Troubleshooting Flowchart Troubleshooting ProceduresTroubleshooting flowchart 2/2 Troubleshooting Flowchart Troubleshooting Procedures Troubleshooting Procedures Troubleshooting Flowchart Power Supply Troubleshooting Troubleshooting Procedures Power Supply TroubleshootingBattery State LED colors Definition Troubleshooting Procedures Power Supply TroubleshootingProcedure 1 Power Status Check Battery LEDAC-IN LED Procedure 2 Adaptor / battery replacementProcedure 3 Power supply connection check BatteryProcedure 5 Replacement check Procedure 4 Diagnostic checkTroubleshooting Procedures Display Troubleshooting Display TroubleshootingProcedure 2 Diagnostic check Display Troubleshooting Troubleshooting ProceduresProcedure 1 External display check Procedure 3 Connector and replacement check FDD Troubleshooting Troubleshooting Procedures FDD TroubleshootingProcedure 3 Connector check and replacement check Troubleshooting Procedures FDD TroubleshootingProcedure 1 FDD head cleaning check Keyboard Troubleshooting Troubleshooting Procedures Keyboard TroubleshootingProcedure 1 External keyboard check Troubleshooting Procedures Keyboard TroubleshootingExternal USB device troubleshooting process External USB Devices TroubleshootingProcedure 2 Replace system board Procedure 1 External device and connection checkTV-Out Failure Troubleshooting Troubleshooting Procedures TV-Out Failure TroubleshootingProcedure 2 TV set check Troubleshooting Procedures TV-Out Failure TroubleshootingProcedure 1 TV connection check Printer Port Troubleshooting Troubleshooting Procedures Printer Port TroubleshootingProcedure 3 Replace system board Troubleshooting Procedures Printer Port TroubleshootingProcedure 1 Diagnostic check Procedure 2 Printer port loopback checkTouch Pad Troubleshooting Troubleshooting Procedures TouchPad TroubleshootingProcedure 2 TouchPad replacement check Troubleshooting Procedures TouchPad TroubleshootingProcedure 1 TouchPad connection check Speaker Troubleshooting Troubleshooting Procedures Speaker TroubleshootingProcedure 3 Connection check Troubleshooting Procedures Speaker TroubleshootingProcedure 1 Audio source test Procedure 2 Earphone testOptical Drive Troubleshooting Troubleshooting Procedures Optical Drive TroubleshootingProcedure Troubleshooting Procedures Optical Drive TroubleshootingProcedure 1 Audio CD check Procedure 2 Drive cleaning checkProcedure 5 Connection check and replacement check Troubleshooting Procedures Modem Troubleshooting Modem TroubleshootingProcedure 3 Modem replacement check Modem Troubleshooting Troubleshooting ProceduresProcedure 1 Telephone line connection check Procedure 2 Modem card connection checkTroubleshooting Procedures Pcmcia Troubleshooting Pcmcia TroubleshootingProcedure 2 Pcmcia socket replacement check Pcmcia Troubleshooting Troubleshooting ProceduresProcedure 1 Sycard test Troubleshooting Procedures Ieee 1394 Troubleshooting Ieee 1394 TroubleshootingProcedure 3 Connection and replacement check Ieee 1394 Troubleshooting Troubleshooting ProceduresProcedure 1 Ieee 1394 device check Troubleshooting Procedures Wireless LAN Troubleshooting Wireless LAN TroubleshootingProcedure 2 Connector and replacement check Wireless LAN Troubleshooting Troubleshooting ProceduresTroubleshooting Procedures Bluetooth Troubleshooting Bluetooth TroubleshootingBluetooth Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Bluetooth Troubleshooting Chapter Tests and Diagnostics Tests and Diagnostics Contents Tests and Diagnostics Diagnostic Test Tests and Diagnostics Diagnostic TestTests and Diagnostics Executing the Diagnostic Test Executing the Diagnostic TestExecuting the Diagnostic Test3. Tests and Diagnostics Tests and Diagnostics Executing the Diagnostic Test Executing the Diagnostic Test Tests and Diagnostics Tests and Diagnostics Config Check Test Config Check TestDMI Check Test DMI Check Test Tests and DiagnosticsPIO Loopback Test Tests and Diagnostics PIO Loopback TestIeee 1394 Test Ieee 1394 Test Tests and DiagnosticsSpeaker Audio Test Tests and Diagnostics Speaker Audio TestFan ON/OFF Test Fan ON/OFF Test Tests and DiagnosticsTests and Diagnostics Main Battery Change Test Main Battery Charge TestFDD Test FDD Test Tests and DiagnosticsCD-ROM Test Tests and Diagnostics CD-ROM TestKeyboard Test Keyboard Test Tests and DiagnosticsTests and Diagnostics Keyboard Test Keyboard Test Tests and Diagnostics Mouse Pad Test Tests and Diagnostics Mouse Pad TestMouse Pad Test Tests and Diagnostics Tests and Diagnostics LCD Pixels Mode Test LCD Pixels Mode TestLid Switch Test Tests and Diagnostics Lid Switch TestHDD R/W Test Tests and Diagnostics HDD R/W TestHDD R/W Test Tests and Diagnostics LAN Test Tests and Diagnostics LAN TestLAN Test Tests and Diagnostics RTC Test Tests and Diagnostics RTC TestCD Control Button Test CD Control Button Test Tests and DiagnosticsTests and Diagnostics RTC Test Chapter Replacement Procedures Replacement Procedures General Replacement Procedures General General Replacement ProceduresReplacement Procedures General Safety Precautions Before You Begin Assembly Procedures Disassembly ProceduresTools and Equipment Removing the battery pack BatteryBattery Replacement Procedures Removing the Battery PackInstalling the Battery Pack Replacement Procedures BatteryPressing the eject button PC Card Replacement ProceduresPC Card Removing a PC CardRemoving the PC Card Replacement Procedures PC CardInstalling the PC Card Removable modules Replacement Procedures Removable modulesRemoving the main module Removable modules Replacement ProceduresRemoving the Main Module Unlock the main module bay lockEngage the main module bay latch lock Installing the Main ModuleRemoving the bracket screws Optical Drive Replacement ProceduresOptical Drive Disassembling the Optical DriveReplacement Procedures Optical Drive Reassembling the Optical Drive Remove seven M2⋅8 screws securing the TV tuner case Replacement Procedures TV TunerTV Tuner Disassembling the TV TunerSecure the lid of the TV tuner case with seven M2⋅8 screws TV Tuner Replacement ProceduresReassembling the TV Tuner Opening the removable HDD container Replacement Procedures Removable HDDRemovable HDD Disassembling the Removable HDDRemoving the HDD case screws Removable HDD Replacement ProceduresReplacement Procedures Removable HDD Reassembling the Removable HDD Removing the FDD bracket screws Replacement Procedures Removable FDDRemovable FDD Disassembling the Removable FDDReassembling the Removable FDD Removable FDD Replacement ProceduresLift off the wireless LAN compartment cover Wireless LAN UnitReplacement Procedures Wireless LAN Unit Removing the Wireless LAN Unit11 Removing the wireless LAN unit Wireless LAN Unit Replacement ProceduresInstalling the Wireless LAN Unit 12 Removing the expansion memory cover Expansion Memory Replacement ProceduresExpansion Memory Removing the Expansion Memory13 Removing the expansion memory Replacement Procedures Expansion MemoryInstalling the Expansion Memory 14 Removing the modem / Bluetooth unit cover Modem / Bluetooth UnitReplacement Procedures Modem / Bluetooth Unit Removing the Modem / Bluetooth Unit15 Removing the modem / Bluetooth unit screws Modem / Bluetooth Unit Replacement ProceduresInstalling the Modem / Bluetooth Unit 16 Removing the CPU compartment cover 12 CPU Replacement Procedures12 CPU Removing the CPU17 Removing the heat sink Replacement Procedures 12 CPU18 Removing the CPU Installing the CPU 13 HDD 13 HDD Replacement Procedures19 Removing the HDD unit cover screws Replacement Procedures 13 HDDRemoving the HDD 20 Removing the HDD unit case screws 21 Removing the aluminum HDD shielding and connectorInstalling the HDD Open the display panel Keyboard Replacement ProceduresKeyboard Removing the Keyboard23 Removing keyboard cable and keyboard Replacement Procedures KeyboardRemove two M2.5⋅3 silver screws securing the keyboard Installing the Keyboard Remove the keyboard, HDD and main module TOP Cover Replacement ProceduresTop Cover Removing the Top Cover25 Removing the screws from the computer underside Replacement Procedures TOP CoverInstalling the Top Cover Remove the keyboard, HDD, main module and top cover Replacement Procedures Function Key BoardFunction Key Board Removing the Function Key BoardInstalling the Function Key Board Function Key Board Replacement Procedures27 Removing the LED/power button board LED / Power Button BoardReplacement Procedures LED / Power Button Board Removing the LED / Power Button BoardInstalling the LED / Power Button Board LED / Power Button Board Replacement Procedures28 Removing the TouchPad button board Replacement Procedures TouchPadTouchPad Removing the TouchPadInstalling the TouchPad TouchPad Replacement Procedures29 Removing the wireless LAN compartment cover Display AssemblyReplacement Procedures Display Assembly Removing the Display Assembly31 Removing the hinge cover Display Assembly Replacement Procedures30 Removing the wireless LAN compartment cover Replacement Procedures Display Assembly Installing the Display Assembly Removing the System Board Replacement Procedures System BoardSystem Board Remove the low I/O cover System Board Replacement ProceduresRemove the four hexagonal port screws 34 Removing the hexagonal port screws35 Removing the system board screws and cables Seat the system board and secure with three M2.5⋅6 screws Installing the System BoardRemoving the Direct Play Button Board Replacement Procedures Direct Play Button Board36 Removing the Direct Play cover assembly Direct Play Button BoardInstalling the Direct Play Button Board Direct Play Button Board Replacement Procedures37 Removing the CIR board Replacement Procedures CIR BoardCIR Board Removing the CIR BoardInstalling the CIR Board CIR Board Replacement Procedures38 Removing the direct play LED board Replacement Procedures Direct play LED boardDirect play LED board Removing the Direct Play LED BoardSecure the direct play LED FPC to the system board Direct play LED board Replacement ProceduresInstalling the Direct Play LED Board 39 Removing the audio board screws Replacement Procedures Audio BoardAudio Board Removing the Audio BoardInstalling the Audio Board Audio Board Replacement Procedures40 Removing the speaker screws Replacement Procedures SpeakersSpeakers Removing the Speakers41 Removing the speakers Speakers Replacement ProceduresRemove two M2.5⋅4 screws securing each speaker Installing the Speakers 42 Removing the inner chassis fan screws Fan Set Replacement ProceduresFan Set Removing the Fan Set43 Removing the outer chassis fan screws Replacement Procedures Fan SetInstalling the Fan Set 44 Removing the display mask screws Replacement Procedures Display MaskDisplay Mask Removing the Display MaskInstalling the Display Mask Display Mask Replacement Procedures45 Removing the FL inverter board Replacement Procedures FL Inverter BoardFL Inverter Board Removing the FL Inverter BoardInstalling the FL Inverter Board FL Inverter Board Replacement Procedures46 Removing the LCD module Replacement Procedures LCD ModuleLCD Module Removing the LCD Module47 Removing the LCD cable Pull out LCD cable from LCD connectorSecure LCD cable with one M2.5⋅4 screw Installing the LCD ModuleAppendices Appendices Appendix Contents Figure B.1 System Board FRDSY* Bottom View Table D-7 App-vi Appendix a Handling the LCD Module Precautions for handling the LCD moduleCRT Satellite P20-25 Series Maintenance Manual Satellite P20-25 Series Maintenance Manual Satellite P20-25 Series Maintenance Manual Satellite P20-25 Series Maintenance Manual System Board FRDSY* Bottom View Appendix B Board LayoutFigure B-2 System board FRDSY* layout Top System Board FRDSY* Top ViewMark Number Name Table B-1 System board ICs and connectors top and bottomPCN1 Table B-2 System board ICs and connectors top and bottomTable C-1 Sodimm I/F pin assignments 144-pin 1/4 System Board JP24/JP26 Sodimm I/F 144-pinTable C-1 Sodimm I/F pin assignments 144-pin 2/4 Table C-1 Sodimm I/F pin assignments 144-pin 3/4 Table C-1 Sodimm I/F pin assignments 144-pin 4/4 Table C-2 LCD I/F pin assignments 40-pin JP1 LCD I/F 40-pinTable C-3 RGB I/F pin assignments 15-pin JP15 RGB I/F 15-pinTable C-4 HDD I/F pin assignments 44-pin JP34 HDD I/F 44-pinTable C-5 CD-ROM I/F pin assignments 50-pin JP28 Main Module I/F 60-pinJP29 Second Module I/F 60-pin Table C-6 Parallel I/F pin assignments 25-pin JP14 Parallel I/F 25-pinTable C-7 PC Card I/F pin assignments 154-pin 1/3 JP21 PC Card I/F 150-pinS2 IORD# Table C-7 PC Card I/F pin assignments 154-pin 2/3Table C-7 PC Card I/F pin assignments 154-pin 3/3 Table C-8 Mini PCI I/F pin assignments 124-pin 1/2 JP27 Mini PCI I/F 124-pinTable C-8 Mini PCI I/F pin assignments 124-pin1/2 Microphone 6-pin AC Adaptor Connector 3-pin---Find Power Team10 JP22, JP23, JP25 Fan I/F 3-pin Table C-12 Headphone Connector pin assignments 6-pin Headphone Connector 6-pinSatellite P20-25 Series Maintenance Manual Table D-1 Scan codes set 1 and set 2 1/4 Appendix D Keyboard Scan/Character CodesTable D-1 Scan codes set 1 and set 2 2/4 ALT R Table D-1 Scan codes set 1 and set 2 3/4Table D-1 Scan codes set 1 and set 2 4/4 Table D-2 Scan codes with left Shift key Table D-4 Scan codes with Fn key Table D-3 Scan codes in Numlock modeTable D-6 No.124 key scan code Table D-5 Scan codes in overlay modeTable D-7 No.126 key scan code United Kingdom UK Keyboard United States US KeyboardJapanese JA Keyboard Spanish SP KeyboardFigure E-3 KO keyboard Korean KO KeyboardSatellite P20 Series Maintenance Manual Table F-1 Series Screw Torque List Appendix F Series Screw Torque ListMDC to MB User KEY FPC Bluetooth to MB UP Hinge Cover Satellite P20-25 Series Maintenance Manual Table G-1 Mtbf Appendix G ReliabilitySatellite P20 Series Maintenance Manual