Chapter Contents | Toshiba P25 instruction

2 Troubleshooting Procedures


Chapter 2		Contents
2.1	Troubleshooting Introduction		2-1
2.2	Troubleshooting Flowchart		2-2
2.3	Power Supply Troubleshooting		2-7
2.4	Display Troubleshooting		2-12
2.5	FDD Troubleshooting		2-15
2.6	Keyboard Troubleshooting		2-17
2.7	External USB Devices Troubleshooting		2-19
2.8	TV-Out Failure Troubleshooting		2-21
2.9	Printer Port Troubleshooting		2-23
2.10	TouchPad Troubleshooting		2-25
2.11	Speaker Troubleshooting		2-27
2.12	Optical Drive Troubleshooting		2-29
2.13	Modem Troubleshooting		2-32
2.14	PCMCIA Troubleshooting		2-34
2.15	IEEE 1394 Troubleshooting		2-36
2.16	Wireless LAN Troubleshooting		2-38
2.17	Bluetooth Troubleshooting		2-40

Satellite P20-25 Series Maintenance Manual

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Toshiba P25 manual Chapter Contents

Contents

Toshiba Corporation Copyright DisclaimerTrademarks Safety Precautions Preface Satellite P20-25 Series Maintenance Manual Conventions Acronyms Satellite P20-25 Series Maintenance Manual Table of Contents Tests and Diagnostics Replacement Procedures CPU HDD Appendices Hardware Overview Hardware Overview Chapter Contents Hardware Overview Features Features Hardware Overview Hardware Overview Features Features Hardware Overview Hardware Overview Features System Unit System Unit Hardware Overview Hardware Overview System Unit AUX 2.5-inch Hard Disk Drive Hardware Overview Removable Drives Removable Drives Removable Drives Hardware Overview1 3.5-inch Floppy Disk Drive DVD-R/-RW Drive Read speeds DVD-ROM Drive Matsushita SR-8177 256 Kbytes Max Toshiba SD-C2612 DVD Multi-Drive Combo Drive CD-RW Power Supply Hardware Overview Power Supply Power Supply Hardware Overview LB2 Main Battery BatteriesHardware Overview Batteries Satellite P20-25 Series Maintenance Manual RTC battery Status Time Batteries Hardware Overview Chapter Troubleshooting Procedures Troubleshooting Procedures Chapter Contents Figures Tables Troubleshooting Introduction Troubleshooting Introduction Troubleshooting Procedures Troubleshooting Flowchart Troubleshooting Procedures Troubleshooting Flowchart Troubleshooting Flowchart Troubleshooting Procedures Troubleshooting flowchart 1/2 Troubleshooting flowchart 2/2 Troubleshooting Flowchart Troubleshooting Procedures Troubleshooting Procedures Troubleshooting Flowchart Power Supply Troubleshooting Power Supply Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Power Supply Troubleshooting Procedure 1 Power Status CheckBattery LED Battery State LED colors Definition Procedure 2 Adaptor / battery replacement AC-IN LED Battery Procedure 3 Power supply connection check Procedure 4 Diagnostic check Procedure 5 Replacement check Display Troubleshooting Troubleshooting Procedures Display Troubleshooting Display Troubleshooting Troubleshooting Procedures Procedure 1 External display checkProcedure 2 Diagnostic check Procedure 3 Connector and replacement check FDD Troubleshooting FDD Troubleshooting Troubleshooting Procedures Troubleshooting Procedures FDD Troubleshooting Procedure 1 FDD head cleaning checkProcedure 3 Connector check and replacement check Keyboard Troubleshooting Keyboard Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Keyboard Troubleshooting Procedure 1 External keyboard check External USB Devices Troubleshooting External USB device troubleshooting process Procedure 1 External device and connection check Procedure 2 Replace system board TV-Out Failure Troubleshooting TV-Out Failure Troubleshooting Troubleshooting Procedures Troubleshooting Procedures TV-Out Failure Troubleshooting Procedure 1 TV connection checkProcedure 2 TV set check Printer Port Troubleshooting Printer Port Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Printer Port Troubleshooting Procedure 1 Diagnostic checkProcedure 2 Printer port loopback check Procedure 3 Replace system board TouchPad Troubleshooting Touch Pad Troubleshooting Troubleshooting Procedures Troubleshooting Procedures TouchPad Troubleshooting Procedure 1 TouchPad connection checkProcedure 2 TouchPad replacement check Speaker Troubleshooting Speaker Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Speaker Troubleshooting Procedure 1 Audio source testProcedure 2 Earphone test Procedure 3 Connection check Optical Drive Troubleshooting Optical Drive Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Optical Drive Troubleshooting Procedure 1 Audio CD checkProcedure 2 Drive cleaning check Procedure Procedure 5 Connection check and replacement check Modem Troubleshooting Troubleshooting Procedures Modem Troubleshooting Modem Troubleshooting Troubleshooting Procedures Procedure 1 Telephone line connection checkProcedure 2 Modem card connection check Procedure 3 Modem replacement check Pcmcia Troubleshooting Troubleshooting Procedures Pcmcia Troubleshooting Pcmcia Troubleshooting Troubleshooting Procedures Procedure 1 Sycard testProcedure 2 Pcmcia socket replacement check Ieee 1394 Troubleshooting Troubleshooting Procedures Ieee 1394 Troubleshooting Ieee 1394 Troubleshooting Troubleshooting Procedures Procedure 1 Ieee 1394 device checkProcedure 3 Connection and replacement check Wireless LAN Troubleshooting Troubleshooting Procedures Wireless LAN Troubleshooting Wireless LAN Troubleshooting Troubleshooting Procedures Procedure 2 Connector and replacement check Bluetooth Troubleshooting Troubleshooting Procedures Bluetooth Troubleshooting Bluetooth Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Bluetooth Troubleshooting Chapter Tests and Diagnostics Tests and Diagnostics Contents Tests and Diagnostics Diagnostic Test Diagnostic Test Tests and Diagnostics Executing the Diagnostic Test Tests and Diagnostics Executing the Diagnostic Test Executing 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 Test DMI Check Test Tests and Diagnostics DMI Check Test Tests and Diagnostics PIO Loopback Test PIO Loopback Test Ieee 1394 Test Tests and Diagnostics Ieee 1394 Test Tests and Diagnostics Speaker Audio Test Speaker Audio Test Fan ON/OFF Test Tests and Diagnostics Fan ON/OFF Test Main Battery Charge Test Tests and Diagnostics Main Battery Change Test FDD Test Tests and Diagnostics FDD Test Tests and Diagnostics CD-ROM Test CD-ROM Test Keyboard Test Tests and Diagnostics Keyboard Test Tests and Diagnostics Keyboard Test Keyboard Test Tests and Diagnostics Tests and Diagnostics Mouse Pad Test Mouse Pad Test Mouse Pad Test Tests and Diagnostics LCD Pixels Mode Test Tests and Diagnostics LCD Pixels Mode Test Lid Switch Test Lid Switch Test Tests and Diagnostics Tests and Diagnostics HDD R/W Test HDD R/W Test HDD R/W Test Tests and Diagnostics Tests and Diagnostics LAN Test LAN Test LAN Test Tests and Diagnostics Tests and Diagnostics RTC Test RTC Test CD Control Button Test Tests and Diagnostics CD Control Button Test Tests and Diagnostics RTC Test Chapter Replacement Procedures Replacement Procedures General Replacement Procedures General Replacement Procedures General Replacement Procedures General Safety Precautions Before You Begin Disassembly Procedures Assembly Procedures Tools and Equipment Battery Battery Replacement ProceduresRemoving the Battery Pack Removing the battery pack Replacement Procedures Battery Installing the Battery Pack PC Card Replacement Procedures PC CardRemoving a PC Card Pressing the eject button Replacement Procedures PC Card Removing the PC Card Installing the PC Card Replacement Procedures Removable modules Removable modules Removable modules Replacement Procedures Removing the Main ModuleUnlock the main module bay lock Removing the main module Installing the Main Module Engage the main module bay latch lock Optical Drive Replacement Procedures Optical DriveDisassembling the Optical Drive Removing the bracket screws Replacement Procedures Optical Drive Reassembling the Optical Drive Replacement Procedures TV Tuner TV TunerDisassembling the TV Tuner Remove seven M2⋅8 screws securing the TV tuner case TV Tuner Replacement Procedures Reassembling the TV TunerSecure the lid of the TV tuner case with seven M2⋅8 screws Replacement Procedures Removable HDD Removable HDDDisassembling the Removable HDD Opening the removable HDD container Removable HDD Replacement Procedures Removing the HDD case screws Replacement Procedures Removable HDD Reassembling the Removable HDD Replacement Procedures Removable FDD Removable FDDDisassembling the Removable FDD Removing the FDD bracket screws Removable FDD Replacement Procedures Reassembling the Removable FDD Wireless LAN Unit Replacement Procedures Wireless LAN UnitRemoving the Wireless LAN Unit Lift off the wireless LAN compartment cover Wireless LAN Unit Replacement Procedures 11 Removing the wireless LAN unit Installing the Wireless LAN Unit Expansion Memory Replacement Procedures Expansion MemoryRemoving the Expansion Memory 12 Removing the expansion memory cover Replacement Procedures Expansion Memory 13 Removing the expansion memory Installing the Expansion Memory Modem / Bluetooth Unit Replacement Procedures Modem / Bluetooth UnitRemoving the Modem / Bluetooth Unit 14 Removing the modem / Bluetooth unit cover Modem / Bluetooth Unit Replacement Procedures 15 Removing the modem / Bluetooth unit screws Installing the Modem / Bluetooth Unit 12 CPU Replacement Procedures 12 CPURemoving the CPU 16 Removing the CPU compartment cover Replacement Procedures 12 CPU 17 Removing the heat sink 18 Removing the CPU Installing the CPU 13 HDD Replacement Procedures 13 HDD Replacement Procedures 13 HDD Removing the HDD19 Removing the HDD unit cover screws 21 Removing the aluminum HDD shielding and connector 20 Removing the HDD unit case screws Installing the HDD Keyboard Replacement Procedures KeyboardRemoving the Keyboard Open the display panel Replacement Procedures Keyboard Remove two M2.5⋅3 silver screws securing the keyboard23 Removing keyboard cable and keyboard Installing the Keyboard TOP Cover Replacement Procedures Top CoverRemoving the Top Cover Remove the keyboard, HDD and main module Replacement Procedures TOP Cover 25 Removing the screws from the computer underside Installing the Top Cover Replacement Procedures Function Key Board Function Key BoardRemoving the Function Key Board Remove the keyboard, HDD, main module and top cover Function Key Board Replacement Procedures Installing the Function Key Board LED / Power Button Board Replacement Procedures LED / Power Button BoardRemoving the LED / Power Button Board 27 Removing the LED/power button board LED / Power Button Board Replacement Procedures Installing the LED / Power Button Board Replacement Procedures TouchPad TouchPadRemoving the TouchPad 28 Removing the TouchPad button board TouchPad Replacement Procedures Installing the TouchPad Display Assembly Replacement Procedures Display AssemblyRemoving the Display Assembly 29 Removing the wireless LAN compartment cover Display Assembly Replacement Procedures 30 Removing the wireless LAN compartment cover31 Removing the hinge cover Replacement Procedures Display Assembly Installing the Display Assembly Replacement Procedures System Board System BoardRemoving the System Board System Board Replacement Procedures Remove the four hexagonal port screws34 Removing the hexagonal port screws Remove the low I/O cover 35 Removing the system board screws and cables Installing the System Board Seat the system board and secure with three M2.5⋅6 screws Replacement Procedures Direct Play Button Board 36 Removing the Direct Play cover assemblyDirect Play Button Board Removing the Direct Play Button Board Direct Play Button Board Replacement Procedures Installing the Direct Play Button Board Replacement Procedures CIR Board CIR BoardRemoving the CIR Board 37 Removing the CIR board CIR Board Replacement Procedures Installing the CIR Board Replacement Procedures Direct play LED board Direct play LED boardRemoving the Direct Play LED Board 38 Removing the direct play LED board Direct play LED board Replacement Procedures Installing the Direct Play LED BoardSecure the direct play LED FPC to the system board Replacement Procedures Audio Board Audio BoardRemoving the Audio Board 39 Removing the audio board screws Audio Board Replacement Procedures Installing the Audio Board Replacement Procedures Speakers SpeakersRemoving the Speakers 40 Removing the speaker screws Speakers Replacement Procedures Remove two M2.5⋅4 screws securing each speaker41 Removing the speakers Installing the Speakers Fan Set Replacement Procedures Fan SetRemoving the Fan Set 42 Removing the inner chassis fan screws Replacement Procedures Fan Set 43 Removing the outer chassis fan screws Installing the Fan Set Replacement Procedures Display Mask Display MaskRemoving the Display Mask 44 Removing the display mask screws Display Mask Replacement Procedures Installing the Display Mask Replacement Procedures FL Inverter Board FL Inverter BoardRemoving the FL Inverter Board 45 Removing the FL inverter board FL Inverter Board Replacement Procedures Installing the FL Inverter Board Replacement Procedures LCD Module LCD ModuleRemoving the LCD Module 46 Removing the LCD module Pull out LCD cable from LCD connector 47 Removing the LCD cable Installing the LCD Module Secure LCD cable with one M2.5⋅4 screw Appendices 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 Module CRT 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 View System Board FRDSY* Top View Figure B-2 System board FRDSY* layout Top Table B-1 System board ICs and connectors top and bottom Mark Number Name Table B-2 System board ICs and connectors top and bottom PCN1 System Board JP24/JP26 Sodimm I/F 144-pin Table C-1 Sodimm I/F pin assignments 144-pin 1/4 Table 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-pin JP15 RGB I/F 15-pin Table C-3 RGB I/F pin assignments 15-pin JP34 HDD I/F 44-pin Table C-4 HDD I/F pin assignments 44-pin JP28 Main Module I/F 60-pin Table C-5 CD-ROM I/F pin assignments 50-pin JP29 Second Module I/F 60-pin JP14 Parallel I/F 25-pin Table C-6 Parallel I/F pin assignments 25-pin JP21 PC Card I/F 150-pin Table C-7 PC Card I/F pin assignments 154-pin 1/3 Table 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 1/2 Table C-8 Mini PCI I/F pin assignments 124-pin1/2 AC Adaptor Connector 3-pin---Find Power Team 10 JP22, JP23, JP25 Fan I/F 3-pinMicrophone 6-pin Headphone Connector 6-pin Table C-12 Headphone Connector pin assignments 6-pin Satellite P20-25 Series Maintenance Manual Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes set 1 and set 2 1/4 Table D-1 Scan codes set 1 and set 2 2/4 Table D-1 Scan codes set 1 and set 2 3/4 ALT R Table 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 key Table D-5 Scan codes in overlay mode Table D-6 No.124 key scan code Table D-7 No.126 key scan code United States US Keyboard United Kingdom UK Keyboard Spanish SP Keyboard Japanese JA Keyboard Korean KO Keyboard Figure E-3 KO keyboard Satellite P20 Series Maintenance Manual Appendix F Series Screw Torque List Table F-1 Series Screw Torque List MDC to MB User KEY FPC Bluetooth to MB UP Hinge Cover Satellite P20-25 Series Maintenance Manual Appendix G Reliability Table G-1 Mtbf Satellite P20 Series Maintenance Manual