Toshiba Portege M300 User manual

Toshiba Personal Computer
PORTEGE M300
Maintenance Manual
TOSHIBA CORPORATION
File Number 960-504

ii PORTEGE M300 Maintenance Manual (960-504)
Copyright
© 2004 by Toshiba Corporation. All rights reserved. Under the copyright laws, this manual
cannot be reproduced in any form without the prior written permission of Toshiba. No patent
liability is assumed with respect to the use of the information contained herein.
Toshiba Personal Computer PORTEGE M300 Maintenance Manual
First edition December 2004
Disclaimer
The information presented in this manual has been reviewed and validated for accuracy. The
included set of instructions and descriptions are accurate for the PORTEGE M300 at the time
of this manual's production. However, succeeding computers and manuals are subject to
change without notice. Therefore, Toshiba assumes no liability for damages incurred
directly or indirectly from errors, omissions, or discrepancies between any succeeding
product and this manual.
Trademarks
IBM is a registered trademark and IBM PC is a trademark of International Business
Machines Corporation.
Intel, Intel SpeedStep, Centrino, Pentium and Celeron are trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United States and other
countries/regions.
Windows and Microsoft are registered trademarks of Microsoft Corporation.
Photo CD is a trademark of Eastman Kodak.
Bluetooth is a trademark owned by its proprietor and used by TOSHIBA under license.
i.LINK is a trademark and registered trademarks of Sony Corporation.
Other trademarks and registered trademarks not listed above may be used in this manual.

PORTEGE M300 Maintenance Manual (960-504) iii
Preface
This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer PORTEGE M300.
The procedures described in this manual are intended to help service technicians isolate
faulty Field Replaceable Units (FRUs) and replace them in the field.
SAFETY PRECAUTIONS
Four types of messages are used in this manual to bring important information to your
attention. Each of these messages will be italicized and identified as shown below.
DANGER:“Danger” indicates the existence of a hazard that could result in death or
serious bodily injury, if the safety instruction is not observed.
WARNING: “Warning” indicates the existence of a hazard that could result in bodily
injury, if the safety instruction is not observed.
CAUTION: “Caution” indicates the existence of a hazard that could result in property
damage, if the safety instruction is not observed.
NOTE: “Note” contains general information that relates to your safe maintenance
service.
Improper repair of the computer may result in safety hazards. Toshiba requires service
technicians and authorized dealers or service providers to ensure the following safety
precautions are adhered to strictly.
Be sure to fasten screws securely with the right screwdriver. If a screw is not fully
fastened, it could come loose, creating a danger of a short circuit, which could cause
overheating, smoke or fire.
If you replace the battery pack or RTC battery, be sure to use only the same model
battery or an equivalent battery recommended by Toshiba. Installation of the wrong
battery can cause the battery to explode.

iv PORTEGE M300 Maintenance Manual (960-504)
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the PORTEGE M300 system unit and
each FRU.
Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve
FRU problems.
Chapter 3 Test and Diagnostics describes how to perform test and diagnostic
operations for maintenance service.
Chapter 4 Replacement Procedures describes the removal and replacement of the
FRUs.
Appendices The appendices describe the following:
Handling the LCD module
Board layout
Pin assignments
Display codes
Key layout
Wiring diagrams
BIOS Rewrite Procedures
EC/KBC Rewrite Procedures
Reliability

PORTEGE M300 Maintenance Manual (960-504) v
Conventions
This manual uses the following formats to describe, identify, and highlight terms and
operating procedures.
Acronyms
On the first appearance and whenever necessary for clarification acronyms are enclosed in
parentheses following their definition. For example:
Read Only Memory (ROM)
Keys
Keys are used in the text to describe many operations. The key top symbol as it appears on
the keyboard is printed in boldface type.
Key operation
Some operations require you to simultaneously use two or more keys. We identify such
operations by the key top symbols separated by a plus (+) sign. For example, Ctrl + Pause
(Break) means you must hold down Ctrl and at the same time press Pause (Break). If
three keys are used, hold down the first two and at the same time press the third.
User input
Text that you are instructed to type in is shown in the boldface type below:
DISKCOPY A: B:
The display
Text generated by the computer that appears on its display is presented in the type face
below:
Format complete
System transferred

vi PORTEGE M300 Maintenance Manual (960-504)
Table of Contents
Chapter 1 Hardware Overview
1.1 Features......................................................................................................................1-1
1.2 System Unit Block Diagram......................................................................................1-7
1.3 USB Floppy Disk Drive...........................................................................................1-11
1.4 Hard Disk Drive.......................................................................................................1-12
1.5 Optical Drive............................................................................................................1-16
1.6 Keyboard..................................................................................................................1-21
1.7 TFT Color Display...................................................................................................1-22
1.8 Power Supply...........................................................................................................1-24
1.9 Batteries ...................................................................................................................1-27
1.10 AC Adapter..............................................................................................................1-30
Chapter 2 Troubleshooting Procedures
2.1 Troubleshooting.........................................................................................................2-1
2.2 Troubleshooting Flowchart........................................................................................2-3
2.3 Power Supply Troubleshooting .................................................................................2-7
2.4 System Board Troubleshooting ...............................................................................2-18
2.5 USB FDD Troubleshooting .....................................................................................2-31
2.6 HDD Troubleshooting .............................................................................................2-34
2.7 Keyboard Troubleshooting ......................................................................................2-39
2.8 Touch pad Troubleshooting.....................................................................................2-41
2.9 Display Troubleshooting..........................................................................................2-42
2.10 Optical drive Troubleshooting.................................................................................2-45
2.11 Modem Troubleshooting..........................................................................................2-46
2.12 LAN Troubleshooting..............................................................................................2-48
2.13 Wireless LAN Troubleshooting...............................................................................2-49
2.14 Bluetooth Troubleshooting......................................................................................2-52
2.15 Sound Troubleshooting............................................................................................ 2-55

PORTEGE M300 Maintenance Manual (960-504) vii
Chapter 3 Tests and Diagnostics
3.1 The Diagnostic Test...................................................................................................3-1
3.2 Executing the Diagnostic Test...................................................................................3-4
3.3 Setting of the hardware configuration .......................................................................3-8
3.4 Heatrun Test.............................................................................................................3-11
3.5 Subtest Names..........................................................................................................3-12
3.6 System Test..............................................................................................................3-14
3.7 Memory Test............................................................................................................3-16
3.8 Keyboard Test..........................................................................................................3-17
3.9 Display Test.............................................................................................................3-18
3.10 Floppy Disk Test......................................................................................................3-21
3.11 Printer Test...............................................................................................................3-23
3.12 Async Test ...............................................................................................................3-25
3.13 Hard Disk Test.........................................................................................................3-26
3.14 Real Timer Test........................................................................................................3-29
3.15 NDP Test..................................................................................................................3-31
3.16 Expansion Test.........................................................................................................3-32
3.17 CD-ROM/DVD-ROM Test .....................................................................................3-34
3.18 Error Code and Error Status Names.........................................................................3-35
3.19 Hard Disk Test Detail Status ...................................................................................3-38
3.20 Only One Test..........................................................................................................3-40
3.21 Head Cleaning..........................................................................................................3-48
3.22 Log Utilities.............................................................................................................3-49
3.23 Running Test............................................................................................................3-51
3.24 Floppy Disk Drive Utilities......................................................................................3-52
3.25 System Configuration ..............................................................................................3-57
3.26 Wireless LAN Test Program (Intel-made b)............................................................3-59
3.27 Wireless LAN Test Program (Intel-made b/g).........................................................3-61
3.28 Wireless LAN Test Program (Intel-made a/b/g)......................................................3-65
3.29 Wireless LAN Test Program (Askey-made)............................................................3-70
3.30 LAN/Modem/Bluetooth/IEEE1394 Test Program ..................................................3-74

viii PORTEGE M300 Maintenance Manual (960-504)
3.31 Sound Test Program.................................................................................................3-88
3.32 SETUP .....................................................................................................................3-94
Chapter 4 Replacement Procedures
4.1 General.......................................................................................................................4-1
4.2 Battery Pack...............................................................................................................4-8
4.3 PC Card /SD card /CF card......................................................................................4-10
4.4 HDD.........................................................................................................................4-14
4.5 Memory module.......................................................................................................4-17
4.6 Keyboard..................................................................................................................4-19
4.7 Switch membrane.....................................................................................................4-22
4.8 Bluetooth..................................................................................................................4-24
4.9 Optical drive ............................................................................................................4-25
4.10 Display assembly.....................................................................................................4-28
4.11 Speaker.....................................................................................................................4-35
4.12 Touch pad.................................................................................................................4-36
4.13 Wireless LAN card ..................................................................................................4-38
4.14 RTC battery..............................................................................................................4-39
4.15 LAN jack..................................................................................................................4-40
4.16 System board............................................................................................................4-41
4.17 Microphone..............................................................................................................4-43
4.18 Fan............................................................................................................................4-44
4.19 Cooling fin...............................................................................................................4-45
4.20 HDD FPC.................................................................................................................4-47
4.21 Modem.....................................................................................................................4-48
4.22 DC-IN jack...............................................................................................................4-50
4.23 PC card slot cover....................................................................................................4-51
4.24 Display latch ............................................................................................................ 4-53
4.25 Battery lock/Battery latch........................................................................................ 4-55
4.26 LCD mask................................................................................................................ 4-56
4.27 LCD unit/FL inverter...............................................................................................4-58
4.28 PC card slot cover....................................................................................................4-63

PORTEGE M300 Maintenance Manual (960-504) ix
4.29 Wireless LAN antennas/Front panel........................................................................4-65
4.30 Hinge........................................................................................................................4-67
4.31 Fluorescent lamp......................................................................................................4-68
Appendices
Appendix A Handling the LCD Module ........................................................................... A-1
Appendix B Board Layout ................................................................................................ B-1
Appendix C Pin Assignments............................................................................................ C-1
Appendix D Display Codes...............................................................................................D-1
Appendix E Key Layout.....................................................................................................E-1
Appendix F Wiring Diagrams............................................................................................F-1
Appendix G BIOS Rewrite Procedures.............................................................................G-1
Appendix H EC/KBC Rewrite Procedures........................................................................ H-1
Appendix I Reliability........................................................................................................I-1

x PORTEGE M300 Maintenance Manual (960-504)

Chapter 1
Hardware Overview

1 Hardware Overview
1-ii PORTEGE M300 Maintenance Manual (960-504)

1 Hardware Overview
PORTEGE M300 Maintenance Manual (960-504) 1-iii
Chapter 1 Contents
1.1 Features.......................................................................................................................1-1
1.2 System Unit Block Diagram.......................................................................................1-7
1.3 USB Floppy Disk Drive ...........................................................................................1-11
1.4 Hard Disk Drive .......................................................................................................1-12
1.5 Optical Drive............................................................................................................1-16
1.5.1 DVD-ROM & CD-R/RW drive..........................................................1-16
1.5.2 DVD Super Multi drive ......................................................................1-18
1.6 Keyboard ..................................................................................................................1-21
1.7 TFT Color Display ...................................................................................................1-22
1.7.1 LCD Module.......................................................................................1-22
1.7.2 FL Inverter Board ...............................................................................1-23
1.8 Power Supply............................................................................................................1-24
1.9 Batteries....................................................................................................................1-27
1.9.1 Main Battery .......................................................................................1-27
1.9.2 Battery Charging Control....................................................................1-28
1.9.3 RTC battery.........................................................................................1-29
1.10 AC Adapter...............................................................................................................1-30

1 Hardware Overview
1-iv PORTEGE M300 Maintenance Manual (960-504)
Figures
Figure 1-1 Front of the computer.....................................................................................1-5
Figure 1-2 System unit configuration..............................................................................1-6
Figure 1-3 System unit block diagram.............................................................................1-7
Figure 1-4 USB FDD.....................................................................................................1-11
Figure 1-5 HDD.............................................................................................................1-12
Figure 1-6 DVD-ROM & CD-R/RW drive...................................................................1-16
Figure 1-7 DVD Super Multi drive ...............................................................................1-18
Figure 1-8 Keyboard......................................................................................................1-21
Figure 1-9 LCD module.................................................................................................1-22
Tables
Table 1-1 USB FDD specifications..............................................................................1-11
Table 1-2 HDD dimensions..........................................................................................1-13
Table 1-3 HDD specifications......................................................................................1-14
Table 1-4 DVD-ROM & CD-R/RW drive outline dimensions.................................... 1-16
Table 1-5 DVD-ROM & CD-R/RW drive specifications............................................1-17
Table 1-6 DVD Super Multi drive outline dimensions................................................1-18
Table 1-7 DVD Super Multi drive specifications ........................................................1-19
Table 1-8 LCD module specifications..........................................................................1-22
Table 1-9 FL inverter board specifications..................................................................1-23
Table 1-10 Power supply output rating..........................................................................1-25
Table 1-11 Battery specifications................................................................................... 1-27
Table 1-12 Time required for main battery....................................................................1-28
Table 1-13 Data preservation time.................................................................................1-28
Table 1-14 RTC battery charging time ..........................................................................1-29
Table 1-15 AC adapter specifications............................................................................1-30

1.1 Features 1 Hardware Overview
PORTEGE M300 Maintenance Manual (960-504) 1-1
1 Features
1.1 Features
The Toshiba PORTEGE M300 Personal Computer uses extensive Large Scale Integration
(LSI), and Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to
provide compact size, low power usage and high reliability. This computer incorporates the
following features and benefits.
Microprocessor
The PORTEGE M300 computer is equipped with an Intel Pentium-M/Celeron-M
Processor, which operate at 400MHz FSB.
•
•
Intel Pentium-M ULV Processor 1.10GHz (Processor Number ; 733)
Intel Celeron-M ULV Processor 900MHz (Processor Number ; 353)
Chipset
The PORTEGE M300 is equipped with Intel 855GME (Montara-GM+) as North Bridge,
Intel ICH4-M as South Bridge and Texas Instrument PCI7421 as Card Controller.
Memory
One 256MB memory is mounted on the system board. One DDR SO-DIMM slots is
available for installation of DDR333 (PC2700) compatible 256, 512MB and 1GB memory
module.
HDD
2.5-inch one 30GB/40G/60GB/80GB/100GB HDD is supported.
USB FDD (Option)
An external two-mode 3.5-inch FDD, which connects with a USB port, supports 720KB
and 1.44MB formats and enables booting the computer from a FDD.
Optical devices
A DVD-ROM & CD-R/RW drive or DVD Super Multi drive is equipped.
Display
12.1 XGA-TFT color display, resolution 1,024(H)×768(V), 16M colors
A high-resolution external monitor connected to the computer can display up to
2048(H)×1536(V), at 16M colors.
Touch pad
Touch pad with two buttons is installed as a pointing device.

1 Hardware Overview 1.1 Features
1-2 PORTEGE M300 Maintenance Manual (960-504)
Keyboard
An-easy-to-use 85/86-key keyboard provides a numeric overlay for fast numeric data
entry.
Docking port
Advanced Port Replicator III can be connected through docking port on the bottom.
Following functions are supported by Advanced Port Replicator III.
•RJ 11 port
•RJ45 port
•LINE-IN port
•LINE-OUT port
•USB port
•RGB connector port
•Parallel port
•Serial port
•PS/2 connector port
•DVI port [Not supported when docking with PORTEGE M300]
•i.LINK (IEEE1394) [Not supported when docking with PORTEGE M300]
Button & Switch
TOSHIBA Assist Button and TOSHIBA Presentation Button are available. Also wireless
communication switch can turn on/off the power of bluetooth and wireless LAN function.
Batteries
The computer has two batteries: a rechargeable Lithium-Ion main battery pack and RTC
battery (that backs up the Real Time Clock and CMOS memory).
Universal Serial Bus (USB2.0)
Three USB ports are provided. The ports comply with the USB2.0 standard, which
enables data transfer speeds 40 times faster than USB1.1 standard. USB1.1 is also
supported.
External monitor port
The external monitor port (RGB connector) supports VESA DDC2B compatible functions.
PC card slot
The PC card slot (PCMCIA) accommodates one 5mm Type II card. (Based on PC Card
Standard, supporting CardBus)

1.1 Features 1 Hardware Overview
PORTEGE M300 Maintenance Manual (960-504) 1-3
SD Card
A SD Card Slot can accommodate Secure Digital flash memory cards with various
capacities.
CF Card
A CF Card Slot can accommodate compact flash memory cards with various capacities.
Dummy card is also equipped to prevent the slot from dust or dirt.
Internal modem
The internal modem is equipped as a modem daughter card (MDC).
The internal modem provides capability for data and fax communication and supports
ITU-T V.90 (V.92) standard. For data reception it operates at 56Kbps and for data
transmission it operates at 33.6Kbps. For fax transmission it operates at 14,4Kbps. The
speed of data transfer and fax depends on analog telephone line conditions. It has an RJ11
modem jack for connecting to a telephone line.
Internal LAN
The computer is equipped with LAN circuits that support Ethernet LAN (10 megabits per
second, 10BASE-T), Fast Ethernet LAN (100 megabits per second, 100 BASE-TX).
i.LINK (IEEE1394)
This port enables high-speed data transfer directly from external devices such as digital
video cameras.
Wireless LAN
Wireless LAN Card can be equipped with mini-PCI slot. Based on IEEE802.11b, b/g,
a/b/g with 2.45GHz/5.0GHz Dual-band antenna.
Bluetooth
Bluetooth module can be equipped. This enables a communication to devices that support
Bluetooth Version 1.2/1.1. Adopting AFH (Adaptive Frequency Hopping), reduce the
interference with the wireless communication in 2.4GHz.
Infrared port
The infrared port is compatible with Fast Infrared (FIR) standards enabling 4 Mbps, 1.152
Mbps, 115.2 kbps, 57.6 kbps, 38.4 kbps, 19.2 kbps or 9.6 kbps data transfer with Infrared
Data Association (IrDA) 1.1 compatible external devices.

1 Hardware Overview 1.1 Features
1-4 PORTEGE M300 Maintenance Manual (960-504)
Sound system
The sound system is equipped with the following features:
•
•
•
•
Built in stereo speakers
Built-in monaural microphone
Stereo Headphone jack (3.5mm mini headphone jack)
External microphone jack (3.5mm mini microphone jack)

1.1 Features 1 Hardware Overview
The front of the computer is shown in Figure 1-1.
Figure 1-1 Front of the computer
PORTEGE M300 Maintenance Manual (960-504) 1-5

1 Hardware Overview 1.1 Features
The system unit configuration is shown in Figure 1-2.
Figure 1-2 System unit configuration
1-6 PORTEGE M300 Maintenance Manual (960-504)