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Toshiba P25 manual Replacement Procedures FL Inverter Board, Removing the FL Inverter Board

Models: P25

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4 Replacement Procedures

4.28 FL Inverter Board

4.28 FL Inverter Board

Removing the FL Inverter Board

To remove the FL inverter board, first remove the battery pack, then follow the steps below.

1.Remove the main module, HDD, keyboard, top cover, display assembly and display mask.

2.Remove one M2x3 screw securing the LCD cable.

3.Remove one M2x3 screw securing the FL inverter board.

4.Lift up the FL inverter board and detach the FL cable and HV cable. Remove the FL inverter board.

Fig 4-45: Removing the FL inverter board

4-78	Satellite P20-25 Series Maintenance Manual

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Toshiba P25 Replacement Procedures FL Inverter Board, Removing the FL Inverter Board, Removing the FL inverter board

Contents

Toshiba Corporation Trademarks CopyrightDisclaimer Safety Precautions PrefaceSatellite P20-25 Series Maintenance Manual Conventions AcronymsSatellite P20-25 Series Maintenance Manual Table of Contents Tests and Diagnostics Replacement Procedures CPU HDDAppendices Hardware Overview Hardware Overview Chapter Contents Hardware Overview Features Features Hardware OverviewHardware Overview Features Features Hardware Overview Hardware Overview Features System Unit System Unit Hardware OverviewHardware Overview System Unit AUX 2.5-inch Hard Disk Drive Hardware Overview Removable Drives1 3.5-inch Floppy Disk Drive Removable DrivesRemovable Drives Hardware Overview DVD-R/-RW Drive Read speedsDVD-ROM Drive Matsushita SR-8177 256 Kbytes Max Toshiba SD-C2612DVD Multi-Drive Combo Drive CD-RWPower Supply Hardware Overview Power SupplyPower Supply Hardware Overview LB2Hardware Overview Batteries Main BatteryBatteries Satellite P20-25 Series Maintenance Manual RTC battery Status TimeBatteries Hardware Overview Chapter Troubleshooting Procedures Troubleshooting Procedures Chapter Contents Figures TablesTroubleshooting Introduction Troubleshooting Introduction Troubleshooting ProceduresTroubleshooting Flowchart Troubleshooting Procedures Troubleshooting FlowchartTroubleshooting Flowchart Troubleshooting Procedures Troubleshooting flowchart 1/2Troubleshooting flowchart 2/2 Troubleshooting Flowchart Troubleshooting Procedures Troubleshooting Procedures Troubleshooting Flowchart Power Supply Troubleshooting Power Supply Troubleshooting Troubleshooting ProceduresBattery LED Troubleshooting Procedures Power Supply TroubleshootingProcedure 1 Power Status Check Battery State LED colors DefinitionProcedure 2 Adaptor / battery replacement AC-IN LEDBattery Procedure 3 Power supply connection checkProcedure 4 Diagnostic check Procedure 5 Replacement checkDisplay Troubleshooting Troubleshooting Procedures Display TroubleshootingProcedure 2 Diagnostic check Display Troubleshooting Troubleshooting ProceduresProcedure 1 External display check Procedure 3 Connector and replacement check FDD Troubleshooting FDD Troubleshooting Troubleshooting ProceduresProcedure 3 Connector check and replacement check Troubleshooting Procedures FDD TroubleshootingProcedure 1 FDD head cleaning check Keyboard Troubleshooting Keyboard Troubleshooting Troubleshooting ProceduresTroubleshooting Procedures Keyboard Troubleshooting Procedure 1 External keyboard checkExternal USB Devices Troubleshooting External USB device troubleshooting processProcedure 1 External device and connection check Procedure 2 Replace system boardTV-Out Failure Troubleshooting TV-Out Failure Troubleshooting Troubleshooting ProceduresProcedure 2 TV set check Troubleshooting Procedures TV-Out Failure TroubleshootingProcedure 1 TV connection check Printer Port Troubleshooting Printer Port Troubleshooting Troubleshooting ProceduresProcedure 2 Printer port loopback check Troubleshooting Procedures Printer Port TroubleshootingProcedure 1 Diagnostic check Procedure 3 Replace system boardTouchPad Troubleshooting Touch Pad Troubleshooting Troubleshooting ProceduresProcedure 2 TouchPad replacement check Troubleshooting Procedures TouchPad TroubleshootingProcedure 1 TouchPad connection check Speaker Troubleshooting Speaker Troubleshooting Troubleshooting ProceduresProcedure 2 Earphone test Troubleshooting Procedures Speaker TroubleshootingProcedure 1 Audio source test Procedure 3 Connection checkOptical Drive Troubleshooting Optical Drive Troubleshooting Troubleshooting ProceduresProcedure 2 Drive cleaning check Troubleshooting Procedures Optical Drive TroubleshootingProcedure 1 Audio CD check ProcedureProcedure 5 Connection check and replacement check Modem Troubleshooting Troubleshooting Procedures Modem TroubleshootingProcedure 2 Modem card connection check Modem Troubleshooting Troubleshooting ProceduresProcedure 1 Telephone line connection check Procedure 3 Modem replacement checkPcmcia Troubleshooting Troubleshooting Procedures Pcmcia TroubleshootingProcedure 2 Pcmcia socket replacement check Pcmcia Troubleshooting Troubleshooting ProceduresProcedure 1 Sycard test Ieee 1394 Troubleshooting Troubleshooting Procedures Ieee 1394 TroubleshootingProcedure 3 Connection and replacement check Ieee 1394 Troubleshooting Troubleshooting ProceduresProcedure 1 Ieee 1394 device check Wireless LAN Troubleshooting Troubleshooting Procedures Wireless LAN TroubleshootingWireless LAN Troubleshooting Troubleshooting Procedures Procedure 2 Connector and replacement checkBluetooth Troubleshooting Troubleshooting Procedures Bluetooth TroubleshootingBluetooth Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Bluetooth Troubleshooting Chapter Tests and Diagnostics Tests and Diagnostics Contents Tests and Diagnostics Diagnostic Test Diagnostic Test Tests and DiagnosticsExecuting the Diagnostic Test Tests and Diagnostics Executing the Diagnostic TestExecuting the Diagnostic Test3. Tests and Diagnostics Tests and Diagnostics Executing the Diagnostic Test Executing the Diagnostic Test Tests and Diagnostics Config Check Test Tests and Diagnostics Config Check TestDMI Check Test Tests and Diagnostics DMI Check TestTests and Diagnostics PIO Loopback Test PIO Loopback TestIeee 1394 Test Tests and Diagnostics Ieee 1394 TestTests and Diagnostics Speaker Audio Test Speaker Audio TestFan ON/OFF Test Tests and Diagnostics Fan ON/OFF TestMain Battery Charge Test Tests and Diagnostics Main Battery Change TestFDD Test Tests and Diagnostics FDD TestTests and Diagnostics CD-ROM Test CD-ROM TestKeyboard Test Tests and Diagnostics Keyboard TestTests and Diagnostics Keyboard Test Keyboard Test Tests and Diagnostics Tests and Diagnostics Mouse Pad Test Mouse Pad TestMouse Pad Test Tests and Diagnostics LCD Pixels Mode Test Tests and Diagnostics LCD Pixels Mode TestLid Switch Test Lid Switch Test Tests and DiagnosticsTests and Diagnostics HDD R/W Test HDD R/W TestHDD R/W Test Tests and Diagnostics Tests and Diagnostics LAN Test LAN TestLAN Test Tests and Diagnostics Tests and Diagnostics RTC Test RTC TestCD Control Button Test Tests and Diagnostics CD Control Button TestTests and Diagnostics RTC Test Chapter Replacement Procedures Replacement Procedures General Replacement Procedures General Replacement Procedures GeneralReplacement Procedures General Safety Precautions Before You Begin Disassembly Procedures Assembly ProceduresTools and Equipment Removing the Battery Pack BatteryBattery Replacement Procedures Removing the battery packReplacement Procedures Battery Installing the Battery PackRemoving a PC Card PC Card Replacement ProceduresPC Card Pressing the eject buttonReplacement Procedures PC Card Removing the PC CardInstalling the PC Card Replacement Procedures Removable modules Removable modulesUnlock the main module bay lock Removable modules Replacement ProceduresRemoving the Main Module Removing the main moduleInstalling the Main Module Engage the main module bay latch lockDisassembling the Optical Drive Optical Drive Replacement ProceduresOptical Drive Removing the bracket screwsReplacement Procedures Optical Drive Reassembling the Optical Drive Disassembling the TV Tuner Replacement Procedures TV TunerTV Tuner Remove seven M2⋅8 screws securing the TV tuner caseSecure the lid of the TV tuner case with seven M2⋅8 screws TV Tuner Replacement ProceduresReassembling the TV Tuner Disassembling the Removable HDD Replacement Procedures Removable HDDRemovable HDD Opening the removable HDD containerRemovable HDD Replacement Procedures Removing the HDD case screwsReplacement Procedures Removable HDD Reassembling the Removable HDD Disassembling the Removable FDD Replacement Procedures Removable FDDRemovable FDD Removing the FDD bracket screwsRemovable FDD Replacement Procedures Reassembling the Removable FDDRemoving the Wireless LAN Unit Wireless LAN UnitReplacement Procedures Wireless LAN Unit Lift off the wireless LAN compartment coverWireless LAN Unit Replacement Procedures 11 Removing the wireless LAN unitInstalling the Wireless LAN Unit Removing the Expansion Memory Expansion Memory Replacement ProceduresExpansion Memory 12 Removing the expansion memory coverReplacement Procedures Expansion Memory 13 Removing the expansion memoryInstalling the Expansion Memory Removing the Modem / Bluetooth Unit Modem / Bluetooth UnitReplacement Procedures Modem / Bluetooth Unit 14 Removing the modem / Bluetooth unit coverModem / Bluetooth Unit Replacement Procedures 15 Removing the modem / Bluetooth unit screwsInstalling the Modem / Bluetooth Unit Removing the CPU 12 CPU Replacement Procedures12 CPU 16 Removing the CPU compartment coverReplacement Procedures 12 CPU 17 Removing the heat sink18 Removing the CPU Installing the CPU 13 HDD Replacement Procedures 13 HDD19 Removing the HDD unit cover screws Replacement Procedures 13 HDDRemoving the HDD 21 Removing the aluminum HDD shielding and connector 20 Removing the HDD unit case screwsInstalling the HDD Removing the Keyboard Keyboard Replacement ProceduresKeyboard Open the display panel23 Removing keyboard cable and keyboard Replacement Procedures KeyboardRemove two M2.5⋅3 silver screws securing the keyboard Installing the Keyboard Removing the Top Cover TOP Cover Replacement ProceduresTop Cover Remove the keyboard, HDD and main moduleReplacement Procedures TOP Cover 25 Removing the screws from the computer undersideInstalling the Top Cover Removing the Function Key Board Replacement Procedures Function Key BoardFunction Key Board Remove the keyboard, HDD, main module and top coverFunction Key Board Replacement Procedures Installing the Function Key BoardRemoving the LED / Power Button Board LED / Power Button BoardReplacement Procedures LED / Power Button Board 27 Removing the LED/power button boardLED / Power Button Board Replacement Procedures Installing the LED / Power Button BoardRemoving the TouchPad Replacement Procedures TouchPadTouchPad 28 Removing the TouchPad button boardTouchPad Replacement Procedures Installing the TouchPadRemoving the Display Assembly Display AssemblyReplacement Procedures Display Assembly 29 Removing the wireless LAN compartment cover31 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 34 Removing the hexagonal port screws System Board Replacement ProceduresRemove the four hexagonal port screws Remove the low I/O cover35 Removing the system board screws and cables Installing the System Board Seat the system board and secure with three M2.5⋅6 screwsDirect Play Button Board Replacement Procedures Direct Play Button Board36 Removing the Direct Play cover assembly Removing the Direct Play Button BoardDirect Play Button Board Replacement Procedures Installing the Direct Play Button BoardRemoving the CIR Board Replacement Procedures CIR BoardCIR Board 37 Removing the CIR boardCIR Board Replacement Procedures Installing the CIR BoardRemoving the Direct Play LED Board Replacement Procedures Direct play LED boardDirect play LED board 38 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 Removing the Audio Board Replacement Procedures Audio BoardAudio Board 39 Removing the audio board screwsAudio Board Replacement Procedures Installing the Audio BoardRemoving the Speakers Replacement Procedures SpeakersSpeakers 40 Removing the speaker screws41 Removing the speakers Speakers Replacement ProceduresRemove two M2.5⋅4 screws securing each speaker Installing the Speakers Removing the Fan Set Fan Set Replacement ProceduresFan Set 42 Removing the inner chassis fan screwsReplacement Procedures Fan Set 43 Removing the outer chassis fan screwsInstalling the Fan Set Removing the Display Mask Replacement Procedures Display MaskDisplay Mask 44 Removing the display mask screwsDisplay Mask Replacement Procedures Installing the Display MaskRemoving the FL Inverter Board Replacement Procedures FL Inverter BoardFL Inverter Board 45 Removing the FL inverter boardFL Inverter Board Replacement Procedures Installing the FL Inverter BoardRemoving the LCD Module Replacement Procedures LCD ModuleLCD Module 46 Removing the LCD modulePull out LCD cable from LCD connector 47 Removing the LCD cableInstalling the LCD Module Secure LCD cable with one M2.5⋅4 screwAppendices Appendices Appendix Contents Figure B.1 System Board FRDSY* Bottom View Table D-7 App-vi Precautions for handling the LCD module Appendix a 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 Appendix B Board Layout System Board FRDSY* Bottom ViewSystem Board FRDSY* Top View Figure B-2 System board FRDSY* layout TopTable B-1 System board ICs and connectors top and bottom Mark Number NameTable B-2 System board ICs and connectors top and bottom PCN1System Board JP24/JP26 Sodimm I/F 144-pin Table C-1 Sodimm I/F pin assignments 144-pin 1/4Table 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 JP1 LCD I/F 40-pin Table C-2 LCD I/F pin assignments 40-pinJP15 RGB I/F 15-pin Table C-3 RGB I/F pin assignments 15-pinJP34 HDD I/F 44-pin Table C-4 HDD I/F pin assignments 44-pinJP28 Main Module I/F 60-pin Table C-5 CD-ROM I/F pin assignments 50-pinJP29 Second Module I/F 60-pin JP14 Parallel I/F 25-pin Table C-6 Parallel I/F pin assignments 25-pinJP21 PC Card I/F 150-pin Table C-7 PC Card I/F pin assignments 154-pin 1/3Table C-7 PC Card I/F pin assignments 154-pin 2/3 S2 IORD#Table C-7 PC Card I/F pin assignments 154-pin 3/3 JP27 Mini PCI I/F 124-pin Table C-8 Mini PCI I/F pin assignments 124-pin 1/2Table 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 Headphone Connector 6-pin Table C-12 Headphone Connector pin assignments 6-pinSatellite P20-25 Series Maintenance Manual Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes set 1 and set 2 1/4Table D-1 Scan codes set 1 and set 2 2/4 Table D-1 Scan codes set 1 and set 2 3/4 ALT RTable D-1 Scan codes set 1 and set 2 4/4 Table D-2 Scan codes with left Shift key Table D-3 Scan codes in Numlock mode Table D-4 Scan codes with Fn keyTable D-5 Scan codes in overlay mode Table D-6 No.124 key scan codeTable D-7 No.126 key scan code United States US Keyboard United Kingdom UK KeyboardSpanish SP Keyboard Japanese JA KeyboardKorean KO Keyboard Figure E-3 KO keyboardSatellite P20 Series Maintenance Manual Appendix F Series Screw Torque List Table F-1 Series Screw Torque ListMDC to MB User KEY FPC Bluetooth to MB UP Hinge Cover Satellite P20-25 Series Maintenance Manual Appendix G Reliability Table G-1 MtbfSatellite P20 Series Maintenance Manual