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Toshiba
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Tests and Diagnostics
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Troubleshooting
Install
Bluetooth
Wireless LAN Unit
Config Check Test
Tests and Diagnostics
Headphone Connector 6-pin
Disassembly Procedures
Main Battery
Procedure 1 Power Status Check
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3. Tests and Diagnostics
3-iv
Satellite
P20-25
Series Maintenance Manual
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Contents
Toshiba Corporation
Trademarks
Copyright
Disclaimer
Preface
Safety Precautions
Satellite P20-25 Series Maintenance Manual
Acronyms
Conventions
Satellite P20-25 Series Maintenance Manual
Table of Contents
Tests and Diagnostics
CPU HDD
Replacement Procedures
Appendices
Hardware Overview
Hardware Overview
Chapter Contents
Hardware Overview
Features Hardware Overview
Features
Hardware Overview Features
Features Hardware Overview
Hardware Overview Features
System Unit Hardware Overview
System Unit
Hardware Overview System Unit
AUX
Hardware Overview Removable Drives
2.5-inch Hard Disk Drive
1 3.5-inch Floppy Disk Drive
Removable Drives
Removable Drives Hardware Overview
Read speeds
DVD-R/-RW Drive
Matsushita SR-8177 256 Kbytes Max Toshiba SD-C2612
DVD-ROM Drive
DVD Multi-Drive
CD-RW
Combo Drive
Hardware Overview Power Supply
Power Supply
LB2
Power Supply Hardware Overview
Hardware Overview Batteries
Main Battery
Batteries
Satellite P20-25 Series Maintenance Manual
Status Time
RTC battery
Batteries Hardware Overview
Chapter Troubleshooting Procedures
Troubleshooting Procedures
Chapter Contents
Tables
Figures
Troubleshooting Introduction Troubleshooting Procedures
Troubleshooting Introduction
Troubleshooting Procedures Troubleshooting Flowchart
Troubleshooting Flowchart
Troubleshooting flowchart 1/2
Troubleshooting Flowchart Troubleshooting Procedures
Troubleshooting flowchart 2/2
Troubleshooting Flowchart Troubleshooting Procedures
Troubleshooting Procedures Troubleshooting Flowchart
Power Supply Troubleshooting Troubleshooting Procedures
Power Supply Troubleshooting
Battery State LED colors Definition
Troubleshooting Procedures Power Supply Troubleshooting
Procedure 1 Power Status Check
Battery LED
AC-IN LED
Procedure 2 Adaptor / battery replacement
Procedure 3 Power supply connection check
Battery
Procedure 5 Replacement check
Procedure 4 Diagnostic check
Troubleshooting Procedures Display Troubleshooting
Display Troubleshooting
Procedure 2 Diagnostic check
Display Troubleshooting Troubleshooting Procedures
Procedure 1 External display check
Procedure 3 Connector and replacement check
FDD Troubleshooting Troubleshooting Procedures
FDD Troubleshooting
Procedure 3 Connector check and replacement check
Troubleshooting Procedures FDD Troubleshooting
Procedure 1 FDD head cleaning check
Keyboard Troubleshooting Troubleshooting Procedures
Keyboard Troubleshooting
Procedure 1 External keyboard check
Troubleshooting Procedures Keyboard Troubleshooting
External USB device troubleshooting process
External USB Devices Troubleshooting
Procedure 2 Replace system board
Procedure 1 External device and connection check
TV-Out Failure Troubleshooting Troubleshooting Procedures
TV-Out Failure Troubleshooting
Procedure 2 TV set check
Troubleshooting Procedures TV-Out Failure Troubleshooting
Procedure 1 TV connection check
Printer Port Troubleshooting Troubleshooting Procedures
Printer Port Troubleshooting
Procedure 3 Replace system board
Troubleshooting Procedures Printer Port Troubleshooting
Procedure 1 Diagnostic check
Procedure 2 Printer port loopback check
Touch Pad Troubleshooting Troubleshooting Procedures
TouchPad Troubleshooting
Procedure 2 TouchPad replacement check
Troubleshooting Procedures TouchPad Troubleshooting
Procedure 1 TouchPad connection check
Speaker Troubleshooting Troubleshooting Procedures
Speaker Troubleshooting
Procedure 3 Connection check
Troubleshooting Procedures Speaker Troubleshooting
Procedure 1 Audio source test
Procedure 2 Earphone test
Optical Drive Troubleshooting Troubleshooting Procedures
Optical Drive Troubleshooting
Procedure
Troubleshooting Procedures Optical Drive Troubleshooting
Procedure 1 Audio CD check
Procedure 2 Drive cleaning check
Procedure 5 Connection check and replacement check
Troubleshooting Procedures Modem Troubleshooting
Modem Troubleshooting
Procedure 3 Modem replacement check
Modem Troubleshooting Troubleshooting Procedures
Procedure 1 Telephone line connection check
Procedure 2 Modem card connection check
Troubleshooting Procedures Pcmcia Troubleshooting
Pcmcia Troubleshooting
Procedure 2 Pcmcia socket replacement check
Pcmcia Troubleshooting Troubleshooting Procedures
Procedure 1 Sycard test
Troubleshooting Procedures Ieee 1394 Troubleshooting
Ieee 1394 Troubleshooting
Procedure 3 Connection and replacement check
Ieee 1394 Troubleshooting Troubleshooting Procedures
Procedure 1 Ieee 1394 device check
Troubleshooting Procedures Wireless LAN Troubleshooting
Wireless LAN Troubleshooting
Procedure 2 Connector and replacement check
Wireless LAN Troubleshooting Troubleshooting Procedures
Troubleshooting Procedures Bluetooth Troubleshooting
Bluetooth Troubleshooting
Bluetooth Troubleshooting Troubleshooting Procedures
Troubleshooting Procedures Bluetooth Troubleshooting
Chapter Tests and Diagnostics
Tests and Diagnostics
Contents
Tests and Diagnostics
Diagnostic Test Tests and Diagnostics
Diagnostic Test
Tests and Diagnostics Executing the Diagnostic Test
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
Tests and Diagnostics Config Check Test
Config Check Test
DMI Check Test
DMI Check Test Tests and Diagnostics
PIO Loopback Test
Tests and Diagnostics PIO Loopback Test
Ieee 1394 Test
Ieee 1394 Test Tests and Diagnostics
Speaker Audio Test
Tests and Diagnostics Speaker Audio Test
Fan ON/OFF Test
Fan ON/OFF Test Tests and Diagnostics
Tests and Diagnostics Main Battery Change Test
Main Battery Charge Test
FDD Test
FDD Test Tests and Diagnostics
CD-ROM Test
Tests and Diagnostics CD-ROM Test
Keyboard Test
Keyboard Test Tests and Diagnostics
Tests and Diagnostics Keyboard Test
Keyboard Test Tests and Diagnostics
Mouse Pad Test
Tests and Diagnostics Mouse Pad Test
Mouse Pad Test Tests and Diagnostics
Tests and Diagnostics LCD Pixels Mode Test
LCD Pixels Mode Test
Lid Switch Test Tests and Diagnostics
Lid Switch Test
HDD R/W Test
Tests and Diagnostics HDD R/W Test
HDD R/W Test Tests and Diagnostics
LAN Test
Tests and Diagnostics LAN Test
LAN Test Tests and Diagnostics
RTC Test
Tests and Diagnostics RTC Test
CD Control Button Test
CD Control Button Test Tests and Diagnostics
Tests and Diagnostics RTC Test
Chapter Replacement Procedures
Replacement Procedures
General
Replacement Procedures
General
General Replacement Procedures
Replacement Procedures General
Safety Precautions
Before You Begin
Assembly Procedures
Disassembly Procedures
Tools and Equipment
Removing the battery pack
Battery
Battery Replacement Procedures
Removing the Battery Pack
Installing the Battery Pack
Replacement Procedures Battery
Pressing the eject button
PC Card Replacement Procedures
PC Card
Removing a PC Card
Removing the PC Card
Replacement Procedures PC Card
Installing the PC Card
Removable modules
Replacement Procedures Removable modules
Removing the main module
Removable modules Replacement Procedures
Removing the Main Module
Unlock the main module bay lock
Engage the main module bay latch lock
Installing the Main Module
Removing the bracket screws
Optical Drive Replacement Procedures
Optical Drive
Disassembling the Optical Drive
Replacement Procedures Optical Drive
Reassembling the Optical Drive
Remove seven M2⋅8 screws securing the TV tuner case
Replacement Procedures TV Tuner
TV Tuner
Disassembling the TV Tuner
Secure the lid of the TV tuner case with seven M2⋅8 screws
TV Tuner Replacement Procedures
Reassembling the TV Tuner
Opening the removable HDD container
Replacement Procedures Removable HDD
Removable HDD
Disassembling the Removable HDD
Removing the HDD case screws
Removable HDD Replacement Procedures
Replacement Procedures Removable HDD
Reassembling the Removable HDD
Removing the FDD bracket screws
Replacement Procedures Removable FDD
Removable FDD
Disassembling the Removable FDD
Reassembling the Removable FDD
Removable FDD Replacement Procedures
Lift off the wireless LAN compartment cover
Wireless LAN Unit
Replacement Procedures Wireless LAN Unit
Removing the Wireless LAN Unit
11 Removing the wireless LAN unit
Wireless LAN Unit Replacement Procedures
Installing the Wireless LAN Unit
12 Removing the expansion memory cover
Expansion Memory Replacement Procedures
Expansion Memory
Removing the Expansion Memory
13 Removing the expansion memory
Replacement Procedures Expansion Memory
Installing the Expansion Memory
14 Removing the modem / Bluetooth unit cover
Modem / Bluetooth Unit
Replacement Procedures Modem / Bluetooth Unit
Removing the Modem / Bluetooth Unit
15 Removing the modem / Bluetooth unit screws
Modem / Bluetooth Unit Replacement Procedures
Installing the Modem / Bluetooth Unit
16 Removing the CPU compartment cover
12 CPU Replacement Procedures
12 CPU
Removing the CPU
17 Removing the heat sink
Replacement Procedures 12 CPU
18 Removing the CPU
Installing the CPU
13 HDD
13 HDD Replacement Procedures
19 Removing the HDD unit cover screws
Replacement Procedures 13 HDD
Removing the HDD
20 Removing the HDD unit case screws
21 Removing the aluminum HDD shielding and connector
Installing the HDD
Open the display panel
Keyboard Replacement Procedures
Keyboard
Removing the Keyboard
23 Removing keyboard cable and keyboard
Replacement Procedures Keyboard
Remove two M2.5⋅3 silver screws securing the keyboard
Installing the Keyboard
Remove the keyboard, HDD and main module
TOP Cover Replacement Procedures
Top Cover
Removing the Top Cover
25 Removing the screws from the computer underside
Replacement Procedures TOP Cover
Installing the Top Cover
Remove the keyboard, HDD, main module and top cover
Replacement Procedures Function Key Board
Function Key Board
Removing the Function Key Board
Installing the Function Key Board
Function Key Board Replacement Procedures
27 Removing the LED/power button board
LED / Power Button Board
Replacement Procedures LED / Power Button Board
Removing the LED / Power Button Board
Installing the LED / Power Button Board
LED / Power Button Board Replacement Procedures
28 Removing the TouchPad button board
Replacement Procedures TouchPad
TouchPad
Removing the TouchPad
Installing the TouchPad
TouchPad Replacement Procedures
29 Removing the wireless LAN compartment cover
Display Assembly
Replacement Procedures Display Assembly
Removing the Display Assembly
31 Removing the hinge cover
Display Assembly Replacement Procedures
30 Removing the wireless LAN compartment cover
Replacement Procedures Display Assembly
Installing the Display Assembly
Removing the System Board
Replacement Procedures System Board
System Board
Remove the low I/O cover
System Board Replacement Procedures
Remove the four hexagonal port screws
34 Removing the hexagonal port screws
35 Removing the system board screws and cables
Seat the system board and secure with three M2.5⋅6 screws
Installing the System Board
Removing the Direct Play Button Board
Replacement Procedures Direct Play Button Board
36 Removing the Direct Play cover assembly
Direct Play Button Board
Installing the Direct Play Button Board
Direct Play Button Board Replacement Procedures
37 Removing the CIR board
Replacement Procedures CIR Board
CIR Board
Removing the CIR Board
Installing the CIR Board
CIR Board Replacement Procedures
38 Removing the direct play LED board
Replacement Procedures Direct play LED board
Direct play LED board
Removing the Direct Play LED Board
Secure the direct play LED FPC to the system board
Direct play LED board Replacement Procedures
Installing the Direct Play LED Board
39 Removing the audio board screws
Replacement Procedures Audio Board
Audio Board
Removing the Audio Board
Installing the Audio Board
Audio Board Replacement Procedures
40 Removing the speaker screws
Replacement Procedures Speakers
Speakers
Removing the Speakers
41 Removing the speakers
Speakers Replacement Procedures
Remove two M2.5⋅4 screws securing each speaker
Installing the Speakers
42 Removing the inner chassis fan screws
Fan Set Replacement Procedures
Fan Set
Removing the Fan Set
43 Removing the outer chassis fan screws
Replacement Procedures Fan Set
Installing the Fan Set
44 Removing the display mask screws
Replacement Procedures Display Mask
Display Mask
Removing the Display Mask
Installing the Display Mask
Display Mask Replacement Procedures
45 Removing the FL inverter board
Replacement Procedures FL Inverter Board
FL Inverter Board
Removing the FL Inverter Board
Installing the FL Inverter Board
FL Inverter Board Replacement Procedures
46 Removing the LCD module
Replacement Procedures LCD Module
LCD Module
Removing the LCD Module
47 Removing the LCD cable
Pull out LCD cable from LCD connector
Secure LCD cable with one M2.5⋅4 screw
Installing the LCD Module
Appendices
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 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
System Board FRDSY* Bottom View
Appendix B Board Layout
Figure B-2 System board FRDSY* layout Top
System Board FRDSY* Top View
Mark Number Name
Table B-1 System board ICs and connectors top and bottom
PCN1
Table B-2 System board ICs and connectors top and bottom
Table C-1 Sodimm I/F pin assignments 144-pin 1/4
System Board JP24/JP26 Sodimm I/F 144-pin
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
Table C-2 LCD I/F pin assignments 40-pin
JP1 LCD I/F 40-pin
Table C-3 RGB I/F pin assignments 15-pin
JP15 RGB I/F 15-pin
Table C-4 HDD I/F pin assignments 44-pin
JP34 HDD I/F 44-pin
Table C-5 CD-ROM I/F pin assignments 50-pin
JP28 Main Module I/F 60-pin
JP29 Second Module I/F 60-pin
Table C-6 Parallel I/F pin assignments 25-pin
JP14 Parallel I/F 25-pin
Table C-7 PC Card I/F pin assignments 154-pin 1/3
JP21 PC Card I/F 150-pin
S2 IORD#
Table C-7 PC Card I/F pin assignments 154-pin 2/3
Table 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-pin
Table C-8 Mini PCI I/F pin assignments 124-pin1/2
Microphone 6-pin
AC Adaptor Connector 3-pin---Find Power Team
10 JP22, JP23, JP25 Fan I/F 3-pin
Table C-12 Headphone Connector pin assignments 6-pin
Headphone Connector 6-pin
Satellite P20-25 Series Maintenance Manual
Table D-1 Scan codes set 1 and set 2 1/4
Appendix D Keyboard Scan/Character Codes
Table D-1 Scan codes set 1 and set 2 2/4
ALT R
Table D-1 Scan codes set 1 and set 2 3/4
Table 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 mode
Table D-6 No.124 key scan code
Table D-5 Scan codes in overlay mode
Table D-7 No.126 key scan code
United Kingdom UK Keyboard
United States US Keyboard
Japanese JA Keyboard
Spanish SP Keyboard
Figure E-3 KO keyboard
Korean KO Keyboard
Satellite P20 Series Maintenance Manual
Table F-1 Series Screw Torque List
Appendix F Series Screw Torque List
MDC to MB User KEY FPC
Bluetooth to MB UP Hinge Cover
Satellite P20-25 Series Maintenance Manual
Table G-1 Mtbf
Appendix G Reliability
Satellite P20 Series Maintenance Manual
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