Toshiba satellite a20 Service Manual

Toshiba Personal Computer

Satellite A20 Series

Maintenance Manual

TOSHIBA CORPORATION

File Number 960-444

ii Satellite A20 Maintenance Manual (960-444)

© 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 Personal Computer Satellite A20 Series Maintenance Manual

First edition May 2003

Disclaimer

This manual has been validated and reviewed for accuracy. The instructions and descriptions it contains are accurate for the TOSHIBA A20 Series Portable Personal Computer 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, Intel SpeedStep and Pentium 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.

Preface

This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Satellite A20 Series, referred to as A20 Series 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 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.

Satellite A20 Maintenance Manual (960-444) iii

The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the Satellite A20 Series 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  Keyboard scan/character codes  Key layout  Wiring diagrams  BIOS Rewrite Procedures  Reliability

iv Satellite A20 Maintenance Manual (960-444)

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

Satellite A20 Maintenance Manual (960-444) v

vi Satellite A20 Maintenance Manual (960-444)

Table of Contents

Chapter 1 Hardware Overview

1.1 Features ......................................................................................................................1-1

1.2 System Unit Block Diagram ...................................................................................... 1-7

1.3 2.5-inch Hard Disk Drive......................................................................................... 1-14

1.4 CD-RW/DVD Drive ................................................................................................ 1-16

1.5 DVD-R/-RW Drive..................................................................................................1-19

1.6 DVD Multi Drive.....................................................................................................1-20

1.7 Keyboard..................................................................................................................1-23

1.8 TFT Color Display...................................................................................................1-24

1.9 Power Supply ........................................................................................................... 1-26

1.10 Batteries ...................................................................................................................1-28

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................................................................................ 2-19

2.5 FDD Troubleshooting .............................................................................................. 2-33

2.6 HDD Troubleshooting ............................................................................................. 2-36

2.7 Keyboard Troubleshooting ...................................................................................... 2-41

2.8 Display Troubleshooting.......................................................................................... 2-44

2.9 CD-RW/DVD, DVD-ROM, DVD-R/-RW

and DVD Multi Drive Troubleshooting................................................................... 2-46

2.10 Modem Troubleshooting.......................................................................................... 2-48

2.11 LAN Troubleshooting.............................................................................................. 2-50

2.12 Wireless LAN Troubleshooting............................................................................... 2-52

2.13 Sound Troubleshooting............................................................................................ 2-56

2.14 SD Card Troubleshooting ........................................................................................ 2-59

Satellite A20 Maintenance Manual (960-444) vii

Chapter 3 Tests and Diagnostics

3.1 The Diagnostic Test ................................................................................................... 3-1

3.2 Executing the Diagnostic Test ................................................................................... 3-3

3.3 Subtest Names............................................................................................................ 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 Floppy Disk Test...................................................................................................... 3-22

3.9 Printer Test............................................................................................................... 3-24

3.10 Async Test ............................................................................................................... 3-26

3.11 Hard Disk Test ......................................................................................................... 3-27

3.12 Real Timer Test........................................................................................................ 3-30

3.13 NDP Test.................................................................................................................. 3-32

3.14 Expansion Test......................................................................................................... 3-34

3.15 CD-ROM/DVD-ROM Test ..................................................................................... 3-36

3.16 Wireless LAN Test (Agere).................................................................................... 3-37

3.17 Wireless LAN Test (Atheros) ................................................................................. 3-42

3.18 Sound/LAN/Modem Test......................................................................................... 3-45

3.19 Error Code and Error Status Names......................................................................... 3-51

3.20 Hard Disk Test Detail Status ................................................................................... 3-54

3.21 Head Cleaning.......................................................................................................... 3-56

3.22 Log Utilities .............................................................................................................3-57

3.23 Running Test............................................................................................................ 3-59

3.24 Floppy Disk Drive Utilities...................................................................................... 3-61

3.25 System Configuration .............................................................................................. 3-66

3.26 SETUP ..................................................................................................................... 3-68

Chapter 4 Replacement Procedures

4.1 General....................................................................................................................... 4-1

4.2 Battery Pack ............................................................................................................... 4-9

viii Satellite A20 Maintenance Manual (960-444)

4.3 Optional PC Card..................................................................................................... 4-11

4.4 Optional SD Card..................................................................................................... 4-13

4.5 HDD......................................................................................................................... 4-14

4.6 Modem Daughter Card ............................................................................................ 4-18

4.7 Slim Select Bay Module .......................................................................................... 4-20

4.8 Cooling Fan.............................................................................................................. 4-24

4.9 CPU.......................................................................................................................... 4-27

4.10 Keyboard.................................................................................................................. 4-32

4.11 Memory Module ...................................................................................................... 4-36

4.12 Wireless LAN Card.................................................................................................. 4-38

4.13 Bluetooth.................................................................................................................. 4-41

4.14 Switch Board............................................................................................................ 4-43

4.15 Top Cover with Display Assembly.......................................................................... 4-45

4.16 Touch Pad ................................................................................................................ 4-48

4.17 Front Membrane ASSY ...........................................................................................4-50

4.18 USB Board ............................................................................................................... 4-52

4.19 Sound Board............................................................................................................. 4-54

4.20 RTC Battery ............................................................................................................. 4-56

4.21 DC-IN Jack .............................................................................................................. 4-58

4.22 System Board ........................................................................................................... 4-59

4.23 Sub Fan .................................................................................................................... 4-61

4.24 PC Card Slot ............................................................................................................4-63

4.25 Speakers ................................................................................................................... 4-65

4.26 Touch Pad Switch .................................................................................................... 4-67

4.27 Display Mask ...........................................................................................................4-68

4.28 FL Inverter ...............................................................................................................4-70

4.29 LCD Module ............................................................................................................ 4-72

4.30 Wireless LAN Antenna/Blutooth Antenna/Display Cover...................................... 4-76

4.31 Fluorescent Lamp..................................................................................................... 4-85

Satellite A20 Maintenance Manual (960-444) ix

Appendices

Appendix A Handling the LCD Module ........................................................................... A-1

Appendix B Board Layout ................................................................................................ B-1

Appendix C Pin Assignments............................................................................................ C-1

Appendix D Keyboard Scan/Character Codes .................................................................. D-1

Appendix E Key Layout.....................................................................................................E-1

Appendix F Wiring Diagram ............................................................................................. F-1

Appendix G BIOS Rewrite Procedures............................................................................. G-1

Appendix H EC/KBC Rewrite Procedures........................................................................ H-1

Appendix I Reliability........................................................................................................I-1

x Satellite A20 Maintenance Manual (960-444)

Chapter 1

Hardware Overview

1 Hardware Overview

1-ii Satellite A20 Maintenance Manual (960-444)

1 Hardware Overview

Chapter 1 Contents

1.1 Features.......................................................................................................................1-1

1.2 System Unit Block Diagram.......................................................................................1-7

1.3 2.5-inch Hard Disk Drive .........................................................................................1-14

1.4 CD-RW/DVD Drive .................................................................................................1-16

1.5 DVD-R/-RW Drive...................................................................................................1-19

1.6 DVD Multi Drive .....................................................................................................1-20

1.7 Keyboard ..................................................................................................................1-23

1.8 TFT Color Display ...................................................................................................1-24

1.8.1 LCD Module .......................................................................................1-24

1.8.2 FL Inverter Board ...............................................................................1-25

1.9 Power Supply............................................................................................................1-26

1.10 Batteries....................................................................................................................1-28

1.10.1 Main Battery .......................................................................................1-28

1.10.2 Battery LED (Main Battery) ...............................................................1-28

1.10.3 Battery Charging Control....................................................................1-29

1.10.4 RTC battery.........................................................................................1-30

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1 Hardware Overview

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 2.5-inch HDD ...............................................................................................1-14

Figure 1-5 CD-RW/DVD drive ......................................................................................1-16

Figure 1-6 DVD-R/-RW drive .......................................................................................1-19

Figure 1-7 DVD Multi drive ..........................................................................................1-20

Figure 1-8 Keyboard ......................................................................................................1-23

Figure 1-9 LCD module .................................................................................................1-24

Tables

Table 1-1 2.5-inch HDD specifications ........................................................................1-14

Table 1-2 CD-RW/DVD drive specifications ...............................................................1-17

Table 1-3 DVD-R/-RW drive specifications ................................................................1-19

Table 1-4 DVD Multi drive specifications ...................................................................1-20

Table 1-5 LCD module specifications ..........................................................................1-25

Table 1-6 FL inverter board specifications ...................................................................1-25

Table 1-7 Power supply board output rating.................................................................1-27

Table 1-8 Battery specifications ...................................................................................1-28

Table 1-9 Time required for quick charges...................................................................1-29

Table 1-10 RTC battery charging/data preservation time...............................................1-30

1-iv Satellite A20 Maintenance Manual (960-444)

1.1 Features 1 Hardware Overview

1 Features

1.1 Features

The Toshiba Satellite A20 Personal Computer uses extensive Large Scale Integration (LSI), and Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide compact size, minimum weight, low power usage and high reliability. The computer is built and configured to order, to best meet the customer’s needs. This computer incorporates the following features:

 Processor

Intel Desktop Pentium 4 Processor •

The processor runs at one of the following speeds:

– 2.53GHz (1.525volts) / 533MHz

– 2.66GHz (1.525volts) / 533MHz

– 2.80GHz (1.525volts) / 533MHz

– 3.06GHz (1.525volts) / 533MHz

The processor incorporates a 12KB L1 cache memory and 512KB L2 cache memory.

 Memory

The computer contains no on-board memory.

Two PC2100 (266MHz) compatible DDR-SDRAM slots are available for installation of a 128MB, 256MB, 512MB or 1GB memory module, for a total of 2GB.

 HDD

Single 30GB, 40GB, 60GB or 80GB internal drive, 2.5-inch and 9.5 mm height.

 USB FDD

A 3.5-inch USB FDD accommodates both 2HD (1.44MB) and 2DD (720KB) disks.

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1 Hardware Overview 1.1 Features

 CD-RW/DVD Drive

A full-size, CD-RW/DVD-ROM drive module lets you run CD/DVDs without using an adaptor. It reads DVD-ROMs at maximum 8 speed and CD-ROMs at maximum 24 speed. It writes CD-R at up to 24 speed and CD-RW at up to 10 speed. A Mode Control button turns power to the fixed CD-RW/DVD-ROM drive on and off so you can use the drive as a stand-alone audio CD player. This drive supports the following formats: Photo-CD, CD-EXTRA, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RW, DVD-Video, DVD-RAM.

 DVD-R/-RW Drive

A full-size DVD-R/-RW drive module lets you record data to rewritable CD/DVDs as well as run either 12 cm (4.72") or 8 cm (3.15") CD/DVDs without using an adaptor. It reads DVD-ROMs at maximum 8 speed and CD-ROMs at maximum 24 speed. It writes CD-R at up to 16 speed, CD-RW at up to 10 speed, DVD-R and DVD-RW at single speed. This drive supports the following formats: Photo CD, CD-R, CD-ROM, CD-RW, CD-ROM XA, CD-DA, CD-TEXT, DVD-Video, DVD-ROM, DVD-R, DVD-RW, DVD-RAM.

 DVD-Multi Drive

A full-size, DVD Multi drive module lets you run either 12 cm (4.72") or 8 cm (3.15") CD/DVDs without using an adaptor. It reads DVD-ROMs at maximum 8 speed and CD-ROMs at maximum 24 speed. It writes CD-R at up to 16 speed, CDRW at up to 8 speed, DVD-R and DVD-RW at single speed, and DVD-RAM at 2 speed. This drive supports the following formats: CD-ROM, CD-R, CD-RW, Photo CD, CD-EXTRA, DVD-Video, DVD-ROM, DVD-R.

 Keyboard

An easy-to-use 85(US)/86(UK)-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.

 Touch pad

A touch pad and control buttons in the palm rest enable control of the on-screen pointer and scrolling of windows.

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1.1 Features 1 Hardware Overview

 Display

The following displays are available:

14.1-inch XGA TFT screen, 1,024×768 pixels, 16M colors •

• • 15.0-inch XGA TFT screen, 1,024×768 pixels, 16M colors

15.0-inch SXGA+ TFT screen, 1,400×1,050 pixels, 16M colors

A video controller contained on the north bridge and 4MB, 8MB, 16MB or 32MB of SMA VRAM enable an external monitor with an RGB cable to display 64k colors at a resolution of 1,600 x 1,200 pixels.

 Batteries

The computer has two batteries: a lithium-ion main battery pack and RTC battery (that backs up the Real Time Clock and CMOS memory).

 Slot for optional memory

Two DDR-SDRAM (PC2100) slots are available for 128MB, 256MB, 512MB and 1GB memory modules, consisting of SDRAM chips.

 Universal Serial Bus (USB)

The computer comes with three USB 2.0 ports that comply with Enhanced Host Controller Interface (EHCI) and Open Host Controller Interface (OHCI). The USB 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.

 Infrared port

The infrared port is compatible with Fast InfraRed (FIR) standards enabling cableless

1.15 Mbps, 4 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.

 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.

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1 Hardware Overview 1.1 Features

 Wireless LAN (mini PCI Card slot)

In some models, a Mini PCI Card with wireless LAN functions is available as a dealer-installed option.

The mini PCI Card for wireless LAN is compatible with other LAN systems based on Direct Sequence Spread Spectrum radio technology that complies with the IEEE

802.11b or a/b. It supports data transfer up to 11 Mbit/s. It has Frequency Channel Selection (2.4GHz) and allows roaming over Multiple channels. Modem + 802.11b and modem mini PCI cards do not support wireless LAN.

 PC Card Slot

A PC Card Slot accommodates two 5mm cards (Type II) or one 10.5mm (Type III) card, which support the PC Card Standard Release 1997 cards and are ready for advanced cards, including PC Card 16's multifunction cards and CardBus 32-bit cards.

 SD Card Slot

The computer is equipped with an SD Card slot that can accommodate Secure Digital flash memory cards with capacities of 8MB, 16MB, 32MB, 64MB and 256MB. 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 highlevel of security and copy protection features.

 Sound system

This computer supports software sound (AC97 Audio). The sound system is equipped with AC97 Audio, a CODEC chip, stereo speakers and jacks for headphone and external microphone. The sound system is equipped with the following:

• Stereo speakers

• Volume control knob

• Headphone jack

• External microphone jack

• Line-in jack

 Video out

This video-out mini-jack enables transfer of NTSC or PAL data (video and right/left audio) to external devices such as a TV.

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1.1 Features 1 Hardware Overview

 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-TV.90. In the U.S. and Canada, V.92 is supported. For data reception it operates at 56,000bps and for data transmission it operates at 33,600bps. For fax transmission it operates at 14,400bps. 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.

The computer is shown in figure 1-1. The system unit configuration is shown in figure 1-2.

Figure 1-1 Front of the computer

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1 Hardware Overview 1.1 Features

Memory 1

Memory 2

FIR

Board

PJ9610

PJ9500

PJ1400

PJ1401

PJ5600LCD 0

PJ5601LCD 1

PJ5655

SD Card

PJ2130

PJ9601

PJ9510

Headphone

External

Microphone

PJ6000

Sound Board

System Board

PJ6004

PJ9600

PJ9511

PJ6001

PJ3010

PJ9512

PJ9513

PJ8800

PJ8810

Line IN

MDC

Speaker

(Right)

Speaker

(Left)

DC-IN

1st Battery

CRT

USB

Network

HDD

ODD

PC Card

PJ5620

PJ4600

PJ4100

PJ1800

PJ1820

PJ2110

PJ3230

Keyboard

PJ3240

PAD

PJ9999

PJ9900

PJ2010

PJ8770

PJ2200

PJ3510

PJ3260

Switch Board

RTC

Battery

FAN 0

Debug port

FAN 1

Mini PCI

Parallel

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 the block diagram of the system unit.

MEMCLK

AGPCLK

CPUCLK

CPU

Voltage

PCICLK

P3V

VID1.2V

Northwood

Intel Pentium 4

2.53/2.66/2.8/3.06GHz

Analog

Sensor

Thermal

Regulator

48MCLK

14MCLK

P3V

256 Balls

YEBISU SS

PPV

533MHz

Devices

ADM1032

P3V

BGA

B3V

Flute

PPV

645 Balls

PCMCIA/

SD Cont.

(Pelican3)

P3V

LCD

P3V

BMV

B2.5V

B3V

B5V

North Bridge

ALi Sonoma-P4

w/Trident XP2 Graphics

266MHz

Memory

Expansion

CardBus

Slot

MCVCCA

Cont.

CardBus

(ToPIC100)

MiniPCI Slot

Wireless LAN

P5V

B3V

S-VIDEO

(TFT)

TV encoder

TVXPRESS2

CRT I/F

B3V

PCI-PCI Bridge

Host-PCI Bridge

Memory Controller

Graphics Controller

Slot0

Memory

Expansion

128/256/512MB/1GB

33MHz

Slot1

LAN Cont.

USB Port0

USB2.0 Cont.

PCI Bus

P2.5V

BGA

352 Balls

RJ45

Realtek

RTL8139DL

LAN-E3V

USB Port1

USB Port2

NEC

UPD720101

B3V

P3V

P5V

S3V

ALi M1535+

South Bridge

SMBUS

S5V

Module

Bluetooth

BT-P3V

Parallel Port

IDE, USB1.1,

PCI-South I/O bridge

SM-BUS, AC' 97 Modem/Audio,

FSNAS*

MIC

Line-IN

Secondary IDE

Primary IDE

Power management

Super I/O, PIT, DMAC, PIC,

4Mbit

BIOS ROM

P5V

HEADPHONE

SPEAKER

SND-E5V

AMP

MM1517

A4R7-P4V

P3V

Analog

Devices

AD1981B

SOUND Codec

S5V

OZ168

O2Micro

CDPLAY Cont.

HDD

P5V

RTC

bq3285

P5V

R3V

SD Card

RJ11

CD-E5V

ODD

Slot x1

MDC

B3V

3rd. I2C Bus

1st. I2C Bus

Power Switch

MCV

PSC

Int-KB

EC/KBC

Mitsubishi

Panel Switch

FIR

P3V

FSNAF*

Wireless Switch. LED

E2PROM

Main Battery

Touch PAD

S3V

P3V

B2.5V

ICS

Clock Gen.

ICS951104

B1.25V

Figure 1-3 System unit block diagram

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1 Hardware Overview 1.2 System Unit Block Diagram

The system unit is composed of the following major components:

 Processor

Intel Desktop Pentium 4 Processor 2.53GHz

– Processor core speed: 2.53GHz at 1.525V

– Processor bus speed: 533MHz

– Integrated L1 cache memory: 12KB instruction cache and 8KB write-back

data cache, 4-way set associative

– Integrated L2 cache memory: 512KB ECC protected cache data array, 8-

way set associative

– Integrated NDP

Intel Desktop Pentium 4 Processor 2.66GHz

– Processor core speed: 2.66GHz at 1.525V

– Processor bus speed: 533MHz

– Integrated L1 cache memory: 12KB instruction cache and 8KB write-back

data cache, 4-way set associative

– Integrated L2 cache memory: 512KB ECC protected cache data array, 8-

way set associative

– Integrated NDP

Intel Desktop Pentium 4 Processor 2.8GHz

– Processor core speed: 2.8GHz at 1.525V

– Processor bus speed: 533MHz

– Integrated L1 cache memory: 12KB instruction cache and 8KB write-back

data cache, 4-way set associative

– Integrated L2 cache memory: 512KB ECC protected cache data array, 8-

way set associative

– Integrated NDP

Intel Desktop Pentium 4 Processor 3.06GHz

– Processor core speed: 3.06GHz at 1.525V

– Processor bus speed: 533MHz

– Integrated L1 cache memory: 12KB instruction cache and 8KB write-back

data cache, 4-way set associative

– Integrated L2 cache memory: 512KB ECC protected cache data array, 8-

way set associative

– Integrated NDP

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1.2 System Unit Block Diagram 1 Hardware Overview

 PCI Chip Set

North Bridge

ALi M1672 Northbridge with Integrated Graphic Chip

ALi PCI Northbridge Core Logic Processor Support

– Supports Intel Pentium 4 microprocessor family with host bus frequency

can be up to 400MHz – 64-bit data bus and 32-bit addressing bus – Optimum buffering architecture design for CPU to memory, AGP and PCI

read/write – Flexible configuration to support back-to-back read transfer in 1QW or

2QW – Supports back-to-back write transfer – Supports synchronous / pseudo asynchronous clock mode between

processor and memory interface with optimized latency

Memory Support

– Supports SDR DRAM PC-100, PC-133 – Supports DDR up to 200, 266MHz – Supports symmetrical and asymmetrical SDRAM / DDR addressing – Supports 64, 128, 256, 512Mbit SDRAM / DDR – Maximum memory size: 3GB – Supports 6 memory rows with per byte access on each row – Supports memory shadowing – x-1-1-1-1-1-1-1 back-to-back page hit – CAS before RAS and self refresh for SDRAM – Pipelined SDRAM / DDR cycle control with hidden pre-charge – Dynamic switching CKE algorithm – Supports LVTTL / SSTL2 signal level

Advanced Mobile Power Management

– Low power cell design – Suspend and standby modes – Internal clock gating on each functional block – PCIPM (H/W PCI initiated) – AGP Busy#/Stop# and PCI Clock Run# – ACPI and DPMS support

High Performance DirectX 7.0 3D Engine

DVD Playback

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1 Hardware Overview 1.2 System Unit Block Diagram

PCI Bus Support

– Supports synchronous / asynchronous clock mode between the processor

bus and the PCI bus – 32-bit Address / Data PCI bus using PCI bus driver technology – Supports up to 5 PCI masters excluding the M1672 and PCI-to-ISA bridge – Parity protection on all PCI bus signals – Fully supports PCI Configuration Space Enable (CSE) protocol – Fully compliant with PCI Rev. 2.2 – Supports delayed transaction – Dynamic memory prefetch algorithm and programmable post write flush

algorithm – Data Collection/Write assembly of line bursts – Supports concurrent PCI bus burst transfer at zero wait-states

Trident CyberBlade XP Graphic Core Highly Integrated Graphics Engine

– Advanced CyberBlade XP Dual-Pixel, Quad-Texture Single-Pass 3D

rendering engine – 128-bit internal bus interface to Core logic block – Supports Microsoft DirectX 7.0/8.0 with Cubic Mapping – Integrated Dual-channel LVDS transmitter – Digital interface to external TMDS transmitter – Digital interface to external TV encoder – DVD hardware assist with Motion Compensation (MC) and Inverse

Discrete Cosine Transform (IDCT) – TrueVideo with Advanced Video De-interlacing – PC2001 Compliant

Packaging

– 645 balls in 37.5 x 37.5mm BGA package

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1.2 System Unit Block Diagram 1 Hardware Overview

South Bridge

ALi M1535+ Southbridge – Provides a high integration bridge between the PCI Bus and Peripheral

Bus (PCI spec. 2.2 Compliant)

– Provides Steerable PCI Interrupts for PCI Device Plug-and-Play

– Enhanced DMA Controller

– Interrupt Controller

– Counter/Timers

– Distributed DMA Supported

– PC/PCI DMA Supported

– Serialized IRQ Supported

– Low Pin Count (LPC) Host Controller

– Plug-and-Play Supported

– Built-in Keyboard Controller

– Supports up to 512 KB ROM Size Decoding PMU Features

– Built-in PCI IDE Controller

– USB Interface

– SMBus Interface

– Super I/O Interface

– Audio System

– Software Modem Interface

– 352-pin (27mm x 27mm) BGA Package

 Card Controller:

• YEBISU SS This gate array has the following functions and components.

– PCI Interface (PCI Rev. 2.2) – Chipset Interface (Intel serial interrupt) – CardBus/PC Card Controller (Yenta Ver. 2.2) : 1 slot – SD memory Card Controller (SDHC Ver. 1.2 enhanced) – SD I/O card controller (Ver. 1.1) – SmartCard I/F / Debug port – External device interface – Deeper Sleep control interface

 Thermo Sensor

• One ADM1032AR is used.

 LAN

• One RTL8139DL chip is used

Satellite A20 Maintenance Manual (960-444) 1-11

1 Hardware Overview 1.2 System Unit Block Diagram

 KBC/EC (Keyboard Controller/Embedded Controller)

• One M306K9FCLRP chip functions as both KBC and EC.

• KBC has the following functions:

– Scan controller to check status of keyboard matrix

– Interface controller between the keyboard scan controller and the system

• EC has the following functions:

– Power supply sequence control

– System I/F

– Thermal conditions control

– Flash rewriting

 PSC (Power Supply Controller)

• One TMP87PM48V chip is used.

• This controller controls the power sources.

 Onboard memory: 0MB

 Optional memory

Two SO-DIMM slots are available for 128, 256, 512MB and 1GB memory modules, consisting of SDRAM chips.

• PC2100

• 3.3 volts operation

• No parity bit

• Data transfer width is 64-bit

• 128/256/512/1024 MB selectable

– 128MB: eight 128Mbit (8M x 16bit) chips – 128MB: four 256Mbit (16M x 16bit) chips – 256MB: eight 256Mbit (16M x 16bit) chips – 512MB: eight 512Mbit (32M x 16bit) chips – 1GB: eight 1Gbit (64M x 16bit) chips

 Sound CODEC

• One AD1981B chip is used.

• Internal Audio Controller is integrated into the MM1535+ chip.

Both chips are used as the CODEC chip.

 Battery E

PROM: ST24C04FM

• One ST24C04FM equivalent (128 words × 16-bit, I

This memory maintains records of battery use.

C-Interface) is used.

1-12 Satellite A20 Maintenance Manual (960-444)

1.2 System Unit Block Diagram 1 Hardware Overview

 Clock Generator

• One ICS951104 is used.

This device generates the system clock.

Satellite A20 Maintenance Manual (960-444) 1-13

1 Hardware Overview 1.3 2.5-inch Hard Disk Drive

1.3 2.5-inch Hard Disk Drive

The removable HDD is a random-access, non-volatile storage device. It has a non-removable

2.5-inch magnetic disk and mini-Winchester type magnetic heads. The computer supports a 30GB, 40GB, 60GB or 80GB HDD.

The HDD is shown in figure 1-4. The specifications are listed in table 1-1.

Storage size (formatted)

Speed (RPM)

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)

Motor start up time (ms)

Figure 1-4 2.5-inch HDD

Table 1-1 2.5-inch HDD specifications (1/3)

Specifications Parameter

TOSHIBA

HDD2181B

30 40 60

154.3 – 298.0 200.8 –

TOSHIBA

HDD2182B

TOSHIBA

HDD2171B

4.200 5.400 4.200 5.400

333.2

100

618 607 618 632

78.9 57.1 78.9

TOSHIBA

HDD2183B

154.3 –

298.0

TOSHIBA

HDD2184B

202.9 –

373.3

1-14 Satellite A20 Maintenance Manual (960-444)

1.3 2.5-inch Hard Disk Drive 1 Hardware Overview

Table 1-1 2.5-inch HDD specifications (2/3)

Parameter

Storage size (formatted)

Speed (RPM)

Data transfer speed (Mbits/s)

Interface transfer rate (MB/s)

Storage density (Kbpi)

Track density (Kbpi)

Average random seek time (read) (ms)

Average random seek time (write) (ms)

Motor start up time (ms)

Table 1-1 2.5-inch HDD specifications (3/3)

Storage size (formatted)

Speed (RPM)

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)

Motor start up time (ms)

Specifications

HITACHI

G8BC0000F310

HITACHI G8BC0000F410 G8BC0000Z410

G8BC00009110

HITACHI

G8BC0000F610

30 40 60

4.200 5.400 4.200

22.1 – 42.8 19.4 – 37.1 27.8 – 44.1 22.1 – 42.8

100 (MAX Ultra DMA mode)

716 644 (MAX) 612 716 (MAX)

70.0 63.0 70.0

Specifications Parameter

TOSHIBA

HDD2188B

HITACHI

G8BC0000Z810

80 80

4200 4200

350 350

100 (MAX Ultra DMA mode)

712 712

96 96

Satellite A20 Maintenance Manual (960-444) 1-15

1 Hardware Overview 1.4 CD-RW/DVD Drive

1.4 CD-RW/DVD Drive

The CD-RW/DVD drive is shown in figure 1-5. Specifications for the CD-RW/DVD drive are described in table 1-2.

Figure 1-5 CD-RW/DVD drive

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