Toshiba satellite m40, tecra a4, dynabook vx4 Service Manual
Toshiba Personal Computer
Satellite M40/M45
TECRA A4
dynabook Vx/4
Maintenance Manual
TOSHIBA CORPORATION
S/ No.
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
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 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
First edition Dec. 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 Satellite M40/M45 TECRA
A4 dynabook Vx/4 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
Intel and Pentium are registered trademarks of Intel Corporation.
IBM, IBM PC/XT, PC/AT, PS/2 and OS/2 are registered trademarks of IBM Corporation.
MS-DOS and Windows XP home edition are registered trademarks of Microsoft Corporation.
Sound Blaster and Pro are trademarks of Creative Technology Ltd.
UNIX is a registered trademark of X/Open Company Ltd.
NetWare are registered trademarks of Novell, Inc.
All other properties are trademarks or registered trademarks of their respective holders.
ii Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
Preface
This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer Satellite M40/M45 TECRA A4 dynabook Vx/4, referred to as
Satellite M40/M45 TECRA A4 dynabook Vx/4 in this manual.
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, RTC battery or backup 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.
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual iii
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the Satellite M40/M45 TECRA A4
dynabook Vx/4 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
Keyboard scan/character codes
Key layout
Wiring diagrams
BIOS Rewrite Procedures
iv Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
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 XXXXX that appears on its display is presented in the type face
below:
Format complete
System transferred
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual v
Table of Contents
Chapter 1 Hardware Overview
1.1 Features............................................................................................................................ 1-1
1.2 System Unit Components .............................................................................................. 1-11
1.3 2.5-inch HDD................................................................................................................. 1-18
1.4 DVD-ROM Drive .......................................................................................................... 1-19
1.5 CD-RW/DVD-ROM Drive............................................................................................ 1-20
1.6 DVD Dual (Double Layer) ............................................................................................1-21
1.7 DVD Super Multi........................................................................................................... 1-22
1.8 DVD Super Multi (Double Layer)................................................................................. 1-23
1.9 Power Supply................................................................................................................. 1-24
2.0 Batteries ......................................................................................................................... 1-25
1.1.1 Main Battery....................................................................................... 1-25
1.1.2 Battery Charging Control ................................................................... 1-25
1.1.3 RTC Battery ....................................................................................... 1-26
Chapter 2 Troubleshooting
2.1 Outline.................................................................................................................... 2-1
2.2 Basic Flowchart...................................................................................................... 2-2
2.3 Power Supply ......................................................................................................... 2-6
Procedure 1 Power Icon Check........................................................................... 2-6
Procedure 2 Connection Check........................................................................... 2-8
Procedure 3 Replacement Check ........................................................................ 2-8
2.4 System Board ......................................................................................................... 2-9
Procedure 3 Replacement Check .................................................................... 2-10
2.5 2.5-inch HDD ....................................................................................................... 2-11
Procedure 1 Message Check ............................................................................. 2-11
Procedure 2 Partition Check .......................................................................... 2-11
Procedure 3 Format Check.............................................................................. 2-12
vi Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
Procedure 4 Test Program Check ................................................................... 2-13
Procedure 5 Connector Check and Replacement Check................................. 2-14
2.6 Keyboard .............................................................................................................. 2-15
Procedure 1 Test Program Check ...................................................................... 2-15
Procedure 2 Connector Check and Replacement Check.................................... 2-15
2.7 Display ................................................................................................................. 2-16
Procedure 1 External Monitor Check ............................................................. 2-16
Procedure 2 Test Program Check ................................................................... 2-16
Procedure 3 Connector Check and Replacement Check................................. 2-16
2.8 ODD (Optical Disk Drive) ................................................................................... 2-18
Procedure 1 ODD Cleaning Check ................................................................. 2-18
Procedure 2 Test Program Check ................................................................... 2-18
Procedure 3 Connector Check and Replacement Check................................. 2-18
2.9 LAN......................................................................................................................2-20
Procedure 1 Test Program Check ................................................................... 2-20
Procedure 2 Connector Check and Replacement Check................................. 2-20
2.10 SD/MS/SM/MMC/XD Card(Optional)................................................................ 2-21
Procedure 1 Test Program Check ................................................................... 2-21
Procedure 2 Connector Check ........................................................................ 2-21
2.11 Parallel Port(Optional) ......................................................................................... 2-22
Procedure 1 Test Program Check ................................................................... 2-22
Procedure 2 Connector Check ........................................................................ 2-22
2.12 Audio Test ............................................................................................................ 2-23
Procedure 1 Test Program Check ...................................................................... 2-23
Procedure 2 Connector Check and Replacement Check.................................... 2-23
2.13 IEEE 1394 Test(Optional).................................................................................... 2-24
Procedure 1 Test Program Check ................................................................... 2-24
Procedure 2 Connector Check ........................................................................ 2-24
2.14 Cooling Module.................................................................................................... 2-25
Procedure 1 Test Program Check ................................................................... 2-25
Procedure 2 Connector Check and Replacement Check................................. 2-25
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual vii
Chapter 3 Diagnostic Programs
3.1 General ................................................................................................................... 3-1
3.2 Quick Start.............................................................................................................. 3-3
3.3 Option................................................................................................................... 3-16
3.4 Subtests................................................................................................................. 3-27
3.5 System Test .......................................................................................................... 3-31
3.6 Memory Test ........................................................................................................ 3-36
3.7 Storage.................................................................................................................. 3-41
3.8 Video .................................................................................................................... 3-45
3.9 Communication (COMM).................................................................................... 3-54
3.10 Peripheral………………………………………………………………………..3-58
3.11 Error Codes and description................................................................................ 3-59
3.12 Quick Test Item List……………………………………………………………..3-i
viii Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
Chapter 4 Replacement Procedures
4.1 General ................................................................................................................... 4-1
4.2 Wireless LAN Card.............................................................................................. 4-22
4.3 HDD ..................................................................................................................... 4-24
4.4 Cooling Module.................................................................................................... 4-27
4.5 CPU ...................................................................................................................... 4-30
4.6 Speaker Cover and Keyboard............................................................................... 4-33
4.7 Bluetooth Card ..................................................................................................... 4-35
4.8 ODD Bay Module ................................................................................................ 4-37
4.9 Display Assembly................................................................................................. 4-40
4.10 Top Cover.............................................................................................................4-42
4.11 System Board, Speaker and MIC, AC-IN, RJ11/45, MDC cable ........................ 4-45
4.12 VGA Board........................................................................................................... 4-48
4.13 North Bridge thermal module............................................................................... 4-50
4.14 Display Mask........................................................................................................ 4-52
4.15 FL Inverter Board................................................................................................. 4-54
4.16 LCD Modules....................................................................................................... 4-56
4.17 I/O Board.............................................................................................................. 4-59
4.18 Switch Cover and Switch Board .......................................................................... 4-60
4.19 Touch Pad and Button Board ............................................................................... 4-62
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual ix
Appendices
Appendix A Handling the LCD Module ........................................................................... A-1
Appendix B Board Layout .................................................................................................B-1
Appendix C Keyboard Scan/Character Codes ...................................................................C-1
Appendix D Key Layout.................................................................................................... D-1
Appendix E Wiring Diagrams............................................................................................E-1
Appendix F BIOS Rewrite Procedures..............................................................................F-1
Appendix G EC/KBC Rewrite Procedures........................................................................ G-1
x Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
Chapter 1
Hardware Overview
1 Hardware Overview
ii Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
1 Hardware Overview
Chapter 1 Contents
1.1 Features ............................................................................................................................... 1
1.2 System Unit Components ................................................................................................. 12
1.3 2.5-inch HDD.................................................................................................................... 19
1.4 DVD-ROM Drive ............................................................................................................. 20
1.5 CD-RW/DVD-ROM Drive............................................................................................... 21
1.6 DVD Dual (Double Layer) ............................................................................................... 22
1.7 DVD Super Multi.............................................................................................................. 23
1.8 DVD Super Multi (Double Layer).................................................................................... 24
1.9 Power Supply .................................................................................................................... 25
2.0 Batteries ............................................................................................................................ 26
1.1.1 Main Battery.......................................................................................... 26
1.1.2 Battery Charging Control ...................................................................... 26
1.1.3 RTC Battery .......................................................................................... 27
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual iii
1 Hardware Overview
Figures
Figure 1- 1 id_10_10g Parts description placement................................................................7
Figure 1- 2 id_10c_10gc Parts description placement ............................................................8
Figure 1- 3 id_JP Parts description placement ........................................................................9
Figure 1- 4 The computer Block diagram ..............................................................................10
Figure 1- 5 System Board configuration ...............................................................................11
Figure 1- 6 System unit block diagram ..................................................................................12
Figure 1- 7 2.5-inch HDD ......................................................................................................19
Figure 1- 8 DVD-ROM drive ................................................................................................. 20
Tables
Table 1- 1 2.5-inch HDD specifications................................................................................19
Table 1- 2 DVD-ROM drive specifications ..........................................................................20
Table 1- 3 CD-RW/DVD-ROM drive specifications............................................................21
Table 1- 4 DVD-Dual(Double Layer) drive specifications..................................................22
Table 1- 5 DVD Super Multi drive specifications.................................................................23
Table 1- 6 DVD Super Multi drive (Double Layer) specifications.......................................24
Table 1- 7 Battery specifications...........................................................................................26
Table 1-8 Quick/normal charging time .................................................................................27
iv Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
1.1 Features 1 Hardware Overview
1.1 Features
The Toshiba Satellite M40/M45 TECRA A4 dynabook VX/4 is a full size notebook PC based on
the Intel Pentinm M (Dothan) and Celeron M processor, providing high-speed processing
capabilities and advanced features. The computer employs a Lithium Ion battery that allows it to
be battery-operated for a longer period of time. The display uses 15.4-inch WXGA and
WSXGA+ LCD panel, at a resolution of 1280 by 800 pixels (WXGA) and 1680 by 1050
pixels(WSXGA+), The PGA socket supports BTO/CTO for the CPU so that the system can be
designed to suit your needs.
The computer has the following features.
Processor
The CPU is the Intel Pentium M (Dothan) Processor and Intel Celeron M.
Intel Dothan Processor (533MHz)
730(1.6G)/740(1.73G)/750(1.86G)/760(2.0G)/770(2.13G) Hz
Intel Celeron M Processor (400MHz)
350(1.3G)/360(1.4G)/370(1.5G) Hz.
Japan Model Use:
Intel Dothan Processor (533MHz)
730(1.6G)
Intel Celeron M Processor (400MHz)
350(1.3G)
Host bridge system controller
System controller: Intel 915 GM/PM
Japan Model Use : Intel 915 GM
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 1
1 Hardware Overview 1.1 Features
Memory
The computer has two SO DIMMs slot comes standard with DDR 2700 module. It
supports PC2700 and uses SO DIMMs (DDR SDRAM) driven at 2.5 V, accepting
BTO/CTO for your memory requirements. It can incorporate up to 2 GB of main
memory.
using the following sizes of memory modules:
y 128 MB (8M×16×8P)
y 256 MB (16M×16×8P)
y 512 MB (32M×16×8P)
y 1024 MB (64Mx16x8P)
Japan Model Use : 256 MB (16M×16×8P)
512 MB (32M×16×8P)
Hard Disk Drive (HDD)
The computer accommodates one 2.5-inch HDD with any of the following storage
capacities:
y 30 GB (9.5 mm thick) ATA (4,200rpm)
y 40 GB (9.5 mm thick) ATA (4,200rpm)
y 60 GB (9.5 mm thick) ATA (4,200rpm)
y 80 GB (9.5 mm thick) ATA (4,200rpm)
y 100 GB (9.5 mm thick) ATA (4,200rpm)
y 120 GB (9.5 mm thick) ATA (4,200rpm)
y 40 GB (9.5 mm thick) ATA (5,400rpm)
y 60 GB (9.5 mm thick) ATA (5,400rpm)
y 80 GB (9.5 mm thick) ATA (5,400rpm)
y 100 GB (9.5 mm thick) ATA (5,400rpm)
y 120 GB (9.5 mm thick) ATA (5,400rpm)
2 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
1.1 Features 1 Hardware Overview
ODD
The ODD can accommodate a CD-ROM, DVD-ROM, CD-RW/DVD ROM,
DVD+-R/+-RW,DVD Super Multi ,DVD Super Multi (Double Layer)drives.
Display
The LCD displays available come in the following four sizes:
y 15.4” WXGA-Non CSV/15.4” WXGA-CSV/15.4” WXGA-CSV(High brightness)/15.4”
WSXGA+-Non CSV color display, resolution 1280×800/1680×1050,262,144 colors
with dithering.
Japan Model Use : 15.4”WXGA-CSV(High brightness)
Keyboard
The keyboard has 29 kinds countries key.
Batteries
The computer has a removable 6 Cell or 12 Cell Lithium Ion battery pack and an internal
RTC battery (rechargeable).
Universal Serial Bus (USB) ports
The computer has three USB 1.1/2.0 ports, It is supported to daisy-chain a maximum of
127 USB devices. The serial data transfer rate is 480 Mbps or 12 Mbps and 1.5 Mbps
These ports support PnP installation and hot plugging.
External monitor port
A 15-pin external monitor port is provided, through which the computer automatically
recognizes an external VESA DDC 2B compatible monitor.
PC Card slot
A PC Card slot is provided to hold PC Card Standard Type II (5.0 mm) card, capable of
using a variety of PC Cards including 16-bit Multiple Function PC Cards and 32-bit
CardBus cards.
PC card HDD boot does Not be supported.
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 3
1 Hardware Overview 1.1 Features
SD/MS(MS Pro)/SM//MMC/XD Card
This slot is for your memory card requirements to provide memory card read on your
computer
Toshiba Pointing Device
Toshiba Pointing Device has one kind of Synaptice TouchPad with two button.
Sound system
The AD1981B integrated audio controller supports multimedia. The sound system
contains the following:
y Stereo speakers
y Headphone jack
y Internal microphone
y External microphone jack
LAN
The internal LAN board supports 10/100 Mbit and Giga-bit for BTO, enabling
connection to a LAN at up to 1Gbps. It also supports Wake-up On LAN From S3/S4/S5
and PXE boot support. The LAN board has the RJ45 jack to directly accommodate a
LAN cable.
Wireless LAN
The internal Mini PCI Card slot supports IEEE802.11a/g(11ch)/ IEEE802.11g(11ch)/
IEEE802.11a/g(13ch)/ IEEE802.11g(13ch)/IEEE802.11a/g(14ch)/ IEEE802.11g(14ch)
card. The Antenna has three wires dual band antenna support with Blue tooth for BTO.
Internal Modem
The computer contains a MDC, enabling data and fax communication. It supports ITUT V.90 (for rest countries )/V.92(America, Canada,UK,Germany,France) The transfer
rates are 56 Kbps for data reception, 33.6 Kbps for data transmission, and 14,400 bps for
fax transmission. Note, however, that the actual speed depends on the line quality. The
RJ11 modem jack is used to accommodate a telephone line.
4 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
1.1 Features 1 Hardware Overview
IEEE 1394
The IEEE 1394 serial data transfer rate is 400 Mbps, These port support hot plugging.
Parallel Port(optional)
The Parallel Port is optional integrated device. to supported connect a printer or
another parallel device. The port is IEEE-1284 compliant and supports Extended
Capabilities Port (ECP).
CD Key(optional)
The CD Key supports to play Audio CD directly.
PCI Express Slot
The ICH6 provides PCI Express root ports which are compliant to the PCI Express Base
Specification ,Revision 1.0a.The Root Port supports 2.5Gb/s bandwidth in each direction (5
Gb/s concurrent) and two virtual channels for full isochronous data support.
Fast Serial Infrared (FIR) communications port(optional)
The FIR Port is optional integrated device. It provided an IrDA 1.1 compatible FIR port ,
enabling wireless communication at a high speed of 1.15 or 4 Mbps.
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 5
1 Hardware Overview 1.1 Features
Figures 1-1/1-2 and 1-3 show the computer and its system unit configuration,
respectively.
6 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
1.1 Features 1 Hardware Overview
Figure 1- 1 id_10_10g Parts description placement
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 7
1 Hardware Overview 1.1 Features
Figure 1- 2 id_10c_10gc Parts description placement
8 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
1.1 Features 1 Hardware Overview
Figure 1- 3 id_JP Parts description placement
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 9
1.1 Features 1 Hardware Overview
Figure 1- 4 The computer Block diagram
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 10
1.1 Features 1 Hardware Overview
Figure 1- 5 System Board configuration
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 11
1.2 System Unit Components 1 Hardware Overview
1.2 System Unit Components
Figure 1-6 is a block diagram of the system unit.
Figure 1- 6 System unit block diagram
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 12
1.2 System Unit Components 1 Hardware Overview
The system unit of the computer consists of the following components:
Processor: Intel Pentium M (Dothan) Processor and Celeron M
y Intel Dothan Processor (533MHz)
− Core speed: 1.6/1.73/1.86/2.0/2.13 GHz
− System bus: 533 MHz
− On-die level 2 cache 2 MB
− Advanced Power Management features including Enhanced
Intel ® SpeedStep ® technology
y Celeron-M (400MHz)
− Core speed: 1.3/1.4/1.5 GHz
− System bus: 400 MHz
− On-die level 2 cache 1 MB
Memory
Two expansion memory slots were provided, They can hold 128/256/512/1024MB
expansion memory modules available as options to grow up to 2.0 GB.
y PC2700/333MHz DDR SDRAM supported
y 128/256/512/1024MB modules supported
− 128 MB (16M x 16 x 4P)
− 256 MB (16M x 16 x 8P)
− 512 MB (32M x 16 x 8P)
− 1024 MB (64M x 8 x 16P)
y 2.5 volt operation
y No parity bit
y 64-bit data transfer
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 13
1 Hardware Overview 1.2 System Unit Components
BIOS ROM (flash EEPROM)
y 4Mb x 1 chip (512KB flash parts)
− 33kb used for EC BIOS
− 51kb used for VGA BIOS
− 40kb used for pxe boot
− 4kb used for logo
− 7kb used for USB
− 15kb used for SCU
− 14kb used for PCI
− 2kb used for ACPI
− 14kb used for PNP
− 30kb used for PM
− 50kb used for system BIOS
− 8kb used for micro code
− 2kb used for DMI
− 4kb used for password
− 26kb used for boot load
− 1kb used for IMAG002
− 2kb used for DYNALOGO
− 2kb used for TSBDEV
− 4kb used for OSB_CMT
− 4kb used for OSB_PMP
− 11kb used for DISPSEG
− 4kb used for OWNER_ROM
− 40kb used for GIGA
− 8kb used for TSBOEM
− 1kb used for CBboot
− 156kb reserved
System controllers
y North Bridge: Intel 915 GM
− CPU interface and control
− System Memory Support
− PCI Express* Graphics (PEG) Interface
− Integrated Display Interface Support
− Internal Graphics Features
− Direct Media Interface (DMI)
− Power Management
14 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
1.2 System Unit Components 1 Hardware Overview
y North Bridge: Intel 915 PM
− CPU interface and control
− System Memory Support
− PCI Express* Graphics (PEG) Interface
− Direct Media Interface (DMI)
− Power Management
y South Bridge: ICH6-M
− Direct Media Interface (DMI)
− PCI Express* Interface
− Serial ATA (SATA) Controller
− Advanced Host Controller Interface (AHCI)
− PCI Interface
− IDE Interface
− Low Pin Count (LPC) Interface
− Compatibility Modules
− Advanced Programmable Interrupt Controller (APIC)
− Universal Serial Bus (USB) Controller
− Lan Controller
− Alert Standard Format (ASF) Management Controller
− RTC
− GPIO
− Enhanced Power Management
− Manageability
− System Management Bus (SMBus 2.0)
− Intel High Definition Audio Controller
− AC ’97 2.3 Controller
PC Card controller
y TI PCI7411
− CardBus/PC Card controller
− 16-bit PCMCIA and 32-bit CardBus.
− SD/MS/MS Pro/MMC/SM/XD Card controller
− IEEE 1394 Controller
Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual 15
1 Hardware Overview 1.2 System Unit Components
Audio Controller
The AD1981B integrated audio controller supports multimedia. The sound system
feature contains the following:
y Variable Sample Rate Audio
y External Audio Power –Down Control
y Integrated Stereo Headphone Amplifier
y Stereo Full-Duplex Codec
y 20-Bit PCM DAC
y Dual MIC Input with Built-In Programmable Preamp
y High Quality CD Input with Ground Sense.
KBC/EC (Keyboard Controller/Embedded Controller)
A single LPC 47N249 chip is used to serve as KBC/ EC and Super IO.
y KBC
− Scan controller function
− Interface controller function
y EC
− Power supply sequence control
− Overheat shutdown support
− LED control
− Beep control
− Device ON/OFF
− Cooling fan speed control
− Universal I/O port
− Battery capacity check
− Flash memory reprogramming function
− EC access interface
− I2C communication control
Battery EE PROM
y 24C02 equivalent (128 words x 16 bits, I2C interface) integrated in the battery pack
− Storing records of battery use
16 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual
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