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.
ii PORTEGE M300 Maintenance Manual (960-504)
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.
PORTEGE M300 Maintenance Manual (960-504) iii
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
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:
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-iv PORTEGE M300 Maintenance Manual (960-504)
1.1 Features 1 Hardware Overview
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 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.
PORTEGE M300 Maintenance Manual (960-504)1-1
1 Hardware Overview 1.1 Features
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)
1-2 PORTEGE M300 Maintenance Manual (960-504)
1.1 Features 1 Hardware Overview
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.
PORTEGE M300 Maintenance Manual (960-504)1-3
1 Hardware Overview 1.1 Features
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)
1-4 PORTEGE M300 Maintenance Manual (960-504)
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
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1.2 System Unit Block Diagram 1 Hardware Overview
1.2 System Unit Block Diagram
Figure 1-3 is a block diagram of the system unit.
Figure 1-3 System unit block diagram
PORTEGE M300 Maintenance Manual (960-504) 1-7
1 Hardware Overview 1.2 System Unit Block Diagram
The system unit is composed of the following major components:
Processor
¾ Intel ® Mobile Pentium ®-M ULV Processor 1.10GHz (Processor Number ; 733)
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.
¾ Supports DDR333 (PC2700)
¾ 2.5 volt operation
¾ 200 pin, SO Dual In-line Memory Modules (SO-DIMM)
North Bridge ; Intel GMCH-M
¾ One Intel 855GME is used.
¾ Features:
• Memory Controller supporting DDR266/DDR333, Max 1280MB
• Built in graphic controller
• RGB, DVI,DVO interface
• AGP interface(AGP V2.0), x4 mode
• PCI Interface (R2.2)
• ACPI 1.0
• Supports Geyserville III
• Supports Intel SpeedStep Technology
• 732-ball 37.5×37.5mm FC-BGA package
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1.2 System Unit Block Diagram 1 Hardware Overview
South Bridge ; Intel ICH4-M (82801DBM)
¾ One Intel 82801DBM is used.
¾ This gate array has the following features:
• PCI 3.3V/5V Tolerance interface
• Provides Steerable PCI interrupt for PCI device P&P
• Enhanced DMA controller
• Interrupt controller
• Counter / Timer
• Supports Distribute DMA.
• Supports PC/PCI DMA.
• Supports Serial IRQ.
• LPC host controller
• Supports Plug-and-Play.
• Supports ACPI
• Internal PCI IDE Controller
• USB interface
• SMBus interface
• Super I/O Interface
• Audio system
• SW modem interface
• 421-ball 31×31mm BGA Package
PC Card Controller ; Texas Instruments (PCI7421)
¾ One PCI 7421 is used.
¾ This gate array has the following functions and components.
• PCI interface (PCI Revision2.2)
• CardBus/PC Card controller (Yenta2 Version2.2)
• SD/MMC card controller (SDHC Ver.1.2)
• SD IO card controller (Ver.1.1)
• Memory Stick/Memory Stick Pro Card Controller
• xD Picture Card Controller
• IEEE1394a Controller 2 port
• BGA Package
Firmware Hub (FWH)
One 4Mbit FWH (STMicro M50FW040N5G) is used.
Sound Controller
AC-Link (South Bridge), STAC9750 (Sound Codec) and AN12941A-VF (Audio Amp)
are used.
2.4GHz DSSS/OFDM, 5.0GHz OFDM wireless LAN card is equipped.
Conformity with IEEE 802.11b, b/g or a/b/g. Theoretical transfer speed is
maximum of 54Mbps (with 802.11a, 802.11g), 11Mbps (with 802.11b) and
108Mbps (with Turbo Mode of Atheros module type). Supports 128bit WEP.
1-10 PORTEGE M300 Maintenance Manual (960-504)
1.3 USB 3.5-inch Floppy Disk Drive 1 Hardware Overview
1.3 USB Floppy Disk Drive
The USB FDD is a thin, high-performance reliable drive that supports 720KB and1.44MB.
The FDD is shown in figure 1-4. The specifications for the FDD are listed in Table 1-1.
Figure 1-4 USB FDD
Table 1-1 USB FDD specifications
Items 720KB mode 1.44MB mode
FDD part
rate
Disk rotation speed 300rpm 360rpm
Track density 5.3 track/mm (135TPI)
USB Full speed mode (12M bits/second)
250K bits/second
500K bits/second Data transfer
PORTEGE M300 Maintenance Manual (960-504) 1-11
1 Hardware Overview 1.4 Hard Disk Drive
1.4 Hard Disk Drive
A 30GB/40GB/60GB/80GB/100GB 2.5-inch HDD is supported.
The HDD is shown in Figure 1-5 and the specification is shown in Table 1-2 and Table 1-3.
Storage size (formatted)40GB 60GB 80GB
Speed (RPM)4,200 5,400
Data transfer speed
(Mbits/s)
Interface transfer rate
(MB/s)
Storage density (Kbpi)
Track density (Ktpi)
Average random seek time
(read) (ms)
Average random seek time
(write) (ms)
175.0-341.7 202.9-373.3 154.3-298.0
100 (Ultra DMA mode)
735 - -
88.1 88.8 78.9
12
12
Power-on-to-ready (sec)4
Specification
Parameter
HGST
G8BC0001E311
HGST
G8BC0001E411
HGST
G8BC0001N611
HGST
G8BC0001N811
Storage size (formatted)30GB 40GB 60GB 80GB
Speed (RPM)4,200
Data transfer speed
(Mbits/s)
Interface transfer rate
(MB/s)
Storage density (Kbpi)
Track density (Ktpi)
Average random seek time
(read) (ms)
Average random seek time
(write) (ms)
512 493
100 (Ultra DMA mode)
702 717
96 96.6
12
14
Power-on-to-ready (sec)3.0 3.5
1-14 PORTEGE M300 Maintenance Manual (960-504)
1.4 Hard Disk Drive 1 Hardware Overview
Table 1-3 HDD Specifications (2/2)
Parameter
HGST
G8BC0001N410
G8BC0001N610
Specification
HGST
HGST
G8BC0001N810
HGST
G8BC0001NA10
Storage size (formatted)40GB 60GB 80GB 100GB
Speed (RPM)5,400
Data transfer speed
(Mbits/s)
Interface transfer rate
(MB/s)
Storage density (Kbpi)
Track density (Ktpi)
Average random seek time
(read) (ms)
Average random seek time
(write) (ms)
100 (Ultra DMA mode)
493
764 (MAX)
113.2
12
14
Power-on-to-ready (sec)3.5
PORTEGE M300 Maintenance Manual (960-504) 1-15
1 Hardware Overview 1.5 Optical Drive
1.5 Optical Drive
1.5.1 DVD-ROM & CD-R/RW Drive
The DVD-ROM & CD-R/RW drive accommodates either 12 cm (4.72-inch) or 8 cm (3.15inch) CD/DVD-ROM and CD-R/RW. It is a high-performance drive that reads DVD at
maximum 8-speed and CD at maximum 24-speed.
The DVD-ROM & CD-R/RW drive is shown in Figure 1-6. The dimensions and
specifications of the DVD-ROM & CD-R/RW drive are described in Table 1-4, Table 1-5.