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Toshiba Personal Computer
PORTEGE A100
Maintenance Manual
TOSHIBA CORPORATION
File Number 960-460
ii PORTEGE A100 Maintenance Manual (960-460)
Copyright
© 2003 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 PORTEGE A100 Maintenance Manual
First edition October 2003
Disclaimer
This manual has been validated and reviewed for accuracy. The instructions and descriptions it contains are
accurate for the Toshiba PORTEGE A100 Maintenance Manual at the time of this manual's production.
However, succeeding computers and manuals are subject to change without notice. Toshiba assumes no liability
for damages incurred directly or indirectly from errors, omissions or discrepancies between the computer and
the manual.
Trademarks
Intel and Pentium are registered trademarks and Speed Step is a trademark of Intel Corporation.
Windows and Microsoft are registered trademarks of Microsoft Corporation.
Photo CD is a trademark of Eastman Kodak.
Other trademarks and registered trademarks not listed above may be used in this manual.
Bluetooth is a trademark owned by its proprietor and used by Toshiba under license.
PORTEGE A100 Maintenance Manual (960-460) iii
Preface
This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer PORTEGE A100.
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.
q Be sure to fasten screws securely with the right screwdriver. Be sure to use the PH
Point size “0” and “1” screwdrivers complying with the ISO/DIS 8764-1:1996. 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.
q 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 A100 Maintenance Manual (960-460)
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the PORTEGE A100 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:
q Handling the LCD module
q Board layout
q Pin assignment
q Display codes
q Key layout
q BIOS/KBC/EC Update
q Reliability
q Key FD
PORTEGE A100 Maintenance Manual (960-460) 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 PORTEGE A100 that appears on its display is presented in the type
face below:
Format complete
System transferred
vi PORTEGE A100 Maintenance Manual (960-460)
Table of Contents
Chapter 1 Hardware Overview
1.1 Features ......................................................................................................................1-1
1.2 2.5-inch Hard Disk Drive.........................................................................................1-10
1.3 Keyboard..................................................................................................................1-12
1.4 CD-RW/DVD-ROM Drive......................................................................................1-13
1.5 CD-ROM Drive........................................................................................................1-14
1.6 DVD-Multi Drive.....................................................................................................1-15
1.7 TFT Color Display...................................................................................................1-16
1.8 Power Supply...........................................................................................................1-18
1.9 Batteries ...................................................................................................................1-20
1.10 AC Adapter..............................................................................................................1-22
Chapter 2 Troubleshooting Procedures
2.1 Troubleshooting .........................................................................................................2-1
2.2 Troubleshooting Flowchart........................................................................................2-2
2.3 Power Supply Troubleshooting..................................................................................2-6
2.4 System Board Troubleshooting................................................................................2-16
2.5 USB 3.5” FDD Troubleshooting..............................................................................2-29
2.6 2.5” HDD Troubleshooting......................................................................................2-32
2.7 Keyboard Troubleshooting ......................................................................................2-37
2.8 Display Troubleshooting..........................................................................................2-38
2.9 Optical Drive Troubleshooting ................................................................................2-40
2.10 Touch Pad Troubleshooting.....................................................................................2-41
2.11 Modem Troubleshooting..........................................................................................2-42
2.12 LAN Troubleshooting..............................................................................................2-43
2.13 Sound Troubleshooting............................................................................................2-44
2.14 SD Card Slot Troubleshooting.................................................................................2-46
PORTEGE A100 Maintenance Manual (960-460) vii
2.15 Wireless LAN Troubleshooting...............................................................................2-47
2.16 Bluetooth Troubleshooting ......................................................................................2-51
Chapter 3 Tests and Diagnostics
3.1 The Diagnostic Test...................................................................................................3-1
3.2 Executing the Diagnostic Test ...................................................................................3-3
3.3 Subtest .......................................................................................................................3-7
3.4 System Test................................................................................................................3-9
3.5 Memory Test............................................................................................................3-12
3.6 Keyboard Test..........................................................................................................3-14
3.7 Display Test .............................................................................................................3-18
3.8 USB Floppy Disk Test .............................................................................................3-21
3.9 Hard Disk Test.........................................................................................................3-23
3.10 Real Timer Test........................................................................................................3-26
3.11 NDP Test..................................................................................................................3-28
3.12 Expansion Test.........................................................................................................3-29
3.13 CD-ROM/DVD-ROM Test .....................................................................................3-31
3.14 Wireless LAN (Calexico) Test.................................................................................3-32
3.15 Wireless LAN (Atheros 11b/g or 11a/b/g) Test.......................................................3-33
3.16 Bluetooth Test .........................................................................................................3-36
3.17 Sound/LAN/Modem Test.........................................................................................3-45
3.18 IEEEE 1394 Test......................................................................................................3-47
3.19 Error Status Code.....................................................................................................3-48
3.20 HDC Status ..............................................................................................................3-50
3.21 FDD Cleaning ..........................................................................................................3-52
3.22 Log Utilities .............................................................................................................3-53
3.23 Running Test............................................................................................................3-55
3.24 Floppy Disk Drive Utilities......................................................................................3-57
3.25 System Configuration..............................................................................................3-63
3.26 SETUP .....................................................................................................................3-65
viii PORTEGE A100 Maintenance Manual (960-460)
Chapter 4 Replacement Procedures
4.1 Overview....................................................................................................................4-1
4.2 Battery pack ...............................................................................................................4-8
4.3 PC card.....................................................................................................................4-10
4.4 SD memory card ......................................................................................................4-11
4.5 Connector panel.......................................................................................................4-12
4.6 Keyboard holder/Keyboard......................................................................................4-13
4.7 Optical drive.............................................................................................................4-16
4.8 Palm rest/Touch pad.................................................................................................4-17
4.9 Memory module .......................................................................................................4-21
4.10 HDD.........................................................................................................................4-23
4.11 Wireless LAN module .............................................................................................4-25
4.12 MDC module............................................................................................................4-26
4.13 RTC battery..............................................................................................................4-27
4.14 Internal Microphone/Cover Latch............................................................................4-28
4.15 Bluetooth module .....................................................................................................4-30
4.16 Cover Assembly.......................................................................................................4-31
4.17 LED board................................................................................................................4-34
4.18 System Board ...........................................................................................................4-35
4.19 2
nd
Battery Board/Heat sink/CPU............................................................................4-37
4.20 CPU fan....................................................................................................................4-41
4.21 Speaker.....................................................................................................................4-42
4.22 LCD unit / FL Inverter.............................................................................................4-44
4.23 LCD cable / Wireless LAN antenna / Bluetooth antenna ........................................4-48
4.24 Hinge assembly........................................................................................................4-53
4.25 Fluorescent Lamp.....................................................................................................4-55
Appendices
Appendix A Handling the LCD Module ........................................................................A-1
Appendix B Board Layout...............................................................................................B-1
Appendix C Pin Assignment .......................................................................................... C-1
Appendix D Keyboard Scan/Character Codes ............................................................... D-1
PORTEGE A100 Maintenance Manual (960-460) ix
Appendix E Key Layout..................................................................................................E-1
Appendix F BIOS/KBC/EC Update ...............................................................................F-1
Appendix G Reliability................................................................................................... G-1
Appendix H Key FD....................................................................................................... H-1
Chapter 1
Hardware Overview
1 Hardware Overview
1-ii PORTEGE A100 Maintenance Manual (960-460)
1 Hardware Overview
1 Hardware Overview
PORTEGE A100 Maintenance Manual (960-460) 1-iii
Chapter 1 Contents
1.1 Features ......................................................................................................................1-1
1.2 2.5-inch Hard Disk Drive.........................................................................................1-10
1.3 Keyboard..................................................................................................................1-12
1.4 CD-RW/DVD-ROM Drive......................................................................................1-13
1.5 CD-ROM Drive........................................................................................................1-14
1.6 DVD-Multi Drive.....................................................................................................1-15
1.7 TFT Color Display...................................................................................................1-16
1.7.1 LCD Module.......................................................................................1-16
1.7.2 FL Inverter Board ...............................................................................1-17
1.8 Power Supply...........................................................................................................1-18
1.9 Batteries ...................................................................................................................1-20
1.9.1 Main Battery.......................................................................................1-20
1.9.2 Battery Charging Control...................................................................1-20
1.9.3 RTC battery........................................................................................1-21
1.10 AC Adapter..............................................................................................................1-22
1 Hardware Overview
1-iv PORTEGE A100 Maintenance Manual (960-460)
Figures
Figure 1-1 Front of the computer.....................................................................................1-5
Figure 1-2 System units configuration............................................................................1-5
Figure 1-3 System Block Diagram..................................................................................1-6
Figure 1-4 2.5-inch HDD...............................................................................................1-10
Figure 1-5 Keyboard......................................................................................................1-12
Tables
Table 1-1 2.5-inch HDD dimensions ...........................................................................1-10
Table 1-2 2.5-inch HDD Specifications .......................................................................1-11
Table 1-3 CD-RW/DVD-ROM drive dimensions........................................................1-13
Table 1-4 CD-RW/DVD-ROM drive specifications ....................................................1-13
Table 1-5 CD-ROM drive dimensions .........................................................................1-14
Table 1-6 CD-ROM drive specifications .....................................................................1-14
Table 1-7 DVD-ROM drive specifications ..................................................................1-15
Table 1-8 LCD module specifications (TMD-maid 12.1 TFT)....................................1-16
Table 1-9 LCD module specifications (LG Phillip-maid 12.1 TFT) ...........................1-16
Table 1-10 FL inverter board specifications ..................................................................1-17
Table 1-11 Power supply output specifications .............................................................1-18
Table 1-12 Battery specifications ...................................................................................1-20
Table 1-13 Time required for charges of main battery...................................................1-21
Table 1-14 RTC battery charging and data preservation time .......................................1-21
Table 1-15 AC adapter specifications ............................................................................1-22
1.1 Features 1 Hardware Overview
PORTEGE A100 Maintenance Manual (960-460) 1-1
1 Features
1.1 Features
The PORTEGE A100 is an ultra thin and lightweight PC realizing cable-less environment on
a table by wireless function with a Mobile Intel Pentium M processor realizing high
performance.
θ Microprocessor
Mobile Intel Pentium Processor-M
A 1.40GHz Mobile Intel Pentium M with a 1.40GHz internal clock, 400MHz bus and
1.484V core operation.
θ Cache memory
The Mobile Intel Pentium M processor has 32KB primary cache and 1MB secondary
cache (in CPU).
θ Memory
Two memory slots are equipped.
Memory module can be installed up to 1GB (1,024MB). Memory modules of 256MB
and 512MB sizes are available.
θ VRAM
16MB VRAM UMA.
The VRAM can be extended by DVMT (Dynamic Video Memory Technology).
θ HDD
Built-in 2.5-inch x 9.5mm height, 40GB or 60GB HDD
θ USB FDD (Optional)
An external two-mode 3.5-inch FDD, which connects with a USB port, supports
720KB and 1.44MB formats and enables booting from system FD.
θ Display
LCD and CRT can be displayed at the same time.
LCD
Built-in 12.1 inch, 262,144 colors, XGA (1,024×768 dots), thin type low
temperature poly-silicon TFT color display. A Video controller is included in North
Bridge chip.
1 Hardware Overview 1.1 Features
1-2 PORTEGE A100 Maintenance Manual (960-460)
CRT
Supported via a RGB connector.
TV-out (depending on the model).
Has a TV output terminal.
θ Optical device (BTO)
Built-in a CD-RW/DVD-ROM drive, CD-ROM drive or DVD-multi drive.
θ Keyboard
An-easy-to-use 85-key keyboard provides a numeric keypad overlay for fast numeric
data entry or for cursor and page control. The keyboard also includes two keys that
have special functions in Microsoft Windows XP. It supports software that uses a
101- or 102-key enhanced keyboard.
θ Touch pad
Touch pad is installed as a pointing device.
θ Battery
The RTC battery is mounted inside the computer.
The main battery is a detachable lithium ion main battery (10.8V-4000mAh) and the
RTC battery is a lithium ion battery (2.4V-17mAh).
θ Slot for expansion memory
One SO-DIMM slots are available for expansion memory of 256 or 512MB memory
modules. One module must be installed in slot A as standard memory.
θ USB (Universal Serial Bus)
The computer comes with four USB ports that comply with the USB 2.0 standard.
The USB 2.0 enables daisy-chain connection of up to 127 USB-equipped devices and
480Mbps serial data transfer. It is designed for easy configuration by a Plug-and-Play
operating system and provides hot insertion/ejection capability.
θ PC card slot
A Type II PC card is acceptable. Supports ToPIC-100 (3.3V/CardBus).
1.1 Features 1 Hardware Overview
PORTEGE A100 Maintenance Manual (960-460) 1-3
θ SD card slot
The computer is equipped with a SD Card slot that can accommodate Secure Digital
flash memory cards with capacities of 8MB, 16MB, 32MB, 64MB, 256MB and
512MB. SD cards let the user easily transfer data from devices, such as digital
cameras and Personal Digital Assistants, that use SD Card flash-memory. The cards
have a high-level of security and copy protection features.
θ Sound system
This computer includes sound controllers that support AC’97 I/F (AC-Link) Revision
2.2. The sound system is equipped with the following:
• Stereo Speaker
• Built-in Microphone
• Volume control knob
• Headphone jack
• External microphone jack
θ One touch button
An Internet button, mail button and cyber support button are installed.
θ Built-in Modem
The computer contains a MDC, enabling data and fax communication. It supports
ITU-TV.90. The transfer rates are 56 Kbps for data reception, 33.6 Kbps for data
transmission, and 14,400 bps for fax transmission. However, the actual speed depends
on the line quality. The RJ11 modem jack is used to accommodate a telephone line.
θ Internal LAN
The computer is equipped with LAN circuits that support Ethernet LAN (10 megabits
per second, 10BASE-T) and Fast Ethernet LAN (100 mega bits per second, 100
BASE-TX). It also supports Wakeup on LAN (WOL) and Magic Packet.
θ Wireless LAN (mini PCI Card slot (1 slot, BTO))
The wireless LAN supports 802.11b (11ch/13ch), 802.11a/b or 802.11 b/g.
This function ca be switched on and off by a switch on the computer.
θ IEEE1394
One port of IEEE1394 connector is mounted. I/O devices (digital video camera, etc)
supporting IEEE1394 can be connected.
1 Hardware Overview 1.1 Features
1-4 PORTEGE A100 Maintenance Manual (960-460)
θ Bluetooth (BTO)
Depending on the model, the computer is equipped with a dedicated Bluetooth
module. This enables a communication to devices that support Bluetooth Version 1.1.
It can be switched on or off with a switch on the computer.
1.1 Features 1 Hardware Overview
PORTEGE A100 Maintenance Manual (960-460) 1-5
Figure 1-1 shows the front of the computer and Figure 1-2 shows the system units
configuration.
Figure 1-1 Front of the computer
Figure 1-2 System units configuration
1 Hardware Overview 1.1 Features
1-6 PORTEGE A100 Maintenance Manual (960-460)
Figure 1-3 shows the system block diagram.
Figure 1-3 System Block Diagram
1.1 Features 1 Hardware Overview
PORTEGE A100 Maintenance Manual (960-460) 1-7
The PC contains the following components.
θ CPU
Mobile Intel Pentium M Processor-M
• A 1.40GHz Pentium M processor with a 1.40GHz internal clock, 400MHz bus
and 1.484V core operation voltage
• Internal cache memory: 32KB
• Secondary cache memory: 1MB
Internal cache memory: 32KB
• Integrated NDP
θ Memory
Two memory slots (DDR266). Memory modules in 256MB and 512MB can be
installed to a maximum of 1GB (1,024MB).
• 3.3V operation
• 140-pin exclusive memory board
• Access time 6ns
• Memory Supporting PC-2100
θ BIOS ROM (FWH)
• 8Mbit (512K×16-bit chip)
− 32KB used for logo and icon
− 64KB used for setup and checksum
− 128KB used for system BIOS
− 64KB used for VGA-BIOS
− 32KB used for ACPI
− 64kB used for Sound logo
− 16KB used for Parameter block
− 16KB used for MBI
− 32KB used for Option logo
− 448KB reserved
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