Toshiba satellite m20 Service Manual

Toshiba Personal Computer

Satellite M20

Maintenance Manual

TOSHIBA CORPORATION

S/ No.

Satellite M20 Maintenance Manual

© 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 Satellite M20 Maintenance Manual

First edition Jan 2003

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 M20 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 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 M20 Maintenance Manual

Preface

This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Satellite M20, referred to as Satellite M20 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 M20 Maintenance Manual iii

The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the Satellite M20 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

iv Satellite M20 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 M20 Maintenance Manual v

Table of Contents

Chapter 1 Hardware Overview

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

1.2 System Unit Components....................................................................................... 1-6

1.3 2.5-inch HDD ....................................................................................................... 1-12

1.4 DVD-ROM Drive................................................................................................. 1-13

1.5 CD-ROM Drive.................................................................................................... 1-14

1.6 CD-R/RW Drive................................................................................................... 1-15

1.7 CD-RW/DVD-ROM Drive .................................................................................. 1-16

1.8 Power Supply ....................................................................................................... 1-17

1.9 Batteries................................................................................................................ 1-19

Chapter 2 Troubleshooting

2.1 Outline.................................................................................................................... 2-1

2.2 Basic Flowchart...................................................................................................... 2-2

2.3 Power Supply ......................................................................................................... 2-6

2.4 System Board ....................................................................................................... 2-10

2.5 2.5-inch HDD ....................................................................................................... 2-20

2.6 Keyboard .............................................................................................................. 2-25

2.7 Display ................................................................................................................. 2-27

2.8 DVD-ROM Drive................................................................................................. 2-29

2.9 CD-ROM Drive.................................................................................................... 2-31

2.10 LAN...................................................................................................................... 2-33

2.11 Cooling Module.................................................................................................... 2-34

Chapter 3 Diagnostic Programs

3.1 General ................................................................................................................... 3-1

3.2 Quick Start.............................................................................................................. 3-3

3.3 Option..................................................................................................................... 3-9

vi Satellite M20 Maintenance Manual

3.4 Subtests................................................................................................................. 3-18

3.5 System Test .......................................................................................................... 3-22

3.6 Memory Test ........................................................................................................ 3-29

3.7 Storage.................................................................................................................. 3-34

3.8 Video .................................................................................................................... 3-39

3.9 Communication (COMM).................................................................................... 3-47

3.10 Peripherl ............................................................................................................... 3-54

3.11 Audio.................................................................................................................... 3-58

3.12 Mode Error Codes and description....................................................................... 3-59

Satellite M20 Maintenance Manual vii

Chapter 4 Replacement Procedures

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

4.2 Cooling Module.................................................................................................... 4-18

4.3 CPU ...................................................................................................................... 4-21

4.4 HDD ..................................................................................................................... 4-24

4.5 Selectable Bay Module......................................................................................... 4-27

4.6 Touch Pad............................................................................................................. 4-31

4.7 RTC Battery ......................................................................................................... 4-35

4.8 Wireless Lan Card................................................................................................ 4-37

4.9 Keyboard .............................................................................................................. 4-39

4.10 Speaker ................................................................................................................. 4-42

4.11 Bluetooth Card..................................................................................................... 4-44

4.12 Top Cover with the Display Assembly ................................................................ 4-46

4.13 I/O Board.............................................................................................................. 4-50

4.14 System Board ....................................................................................................... 4-51

4.15 Display Mask........................................................................................................ 4-53

4.16 Inverter Board ...................................................................................................... 4-55

4.17 LCD Module ........................................................................................................ 4-57

viii Satellite M20 Maintenance Manual

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 Diagrams............................................................................................F-1

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

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

Satellite M20 Maintenance Manual ix

x Satellite M20 Maintenance Manual

Chapter 1

Hardware Overview

1 Hardware Overview

1-ii Satellite M20 Maintenance Manual

1 Hardware Overview

Chapter 1 Contents

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

1.2 System Unit Components .......................................................................................... 1-6

1.3 2.5-inch HDD........................................................................................................... 1-12

1.4 DVD-ROM Drive .................................................................................................... 1-13

1.5 CD-ROM Drive ....................................................................................................... 1-14

1.6 CD-R/RW Drive ...................................................................................................... 1-15

1.7 CD-RW/DVD-ROM Drive...................................................................................... 1-16

1.8 DVD-Multi Drive..................................................................................................... 1-17

1.9 Power Supply ........................................................................................................... 1-18

1.10 Batteries ................................................................................................................... 1-19

1.10.1 Main Battery....................................................................................... 1-19

1.10.2 Battery Charging Control ................................................................... 1-19

1.10.3 RTC Battery ....................................................................................... 1-20

Satellite M20 Maintenance Manual 1-iii

1 Hardware Overview

Figures

Figure 1-1 Front of the computer.......................................................................................... 1-5

Figure 1-2 System unit configuration ................................................................................... 1-5

Figure 1-3 System unit block diagram.................................................................................. 1-6

Figure 1-4 2.5-inch HDD.................................................................................................... 1-12

Figure 1-5 DVD-ROM drive .............................................................................................. 1-13

Figure 1-6 CD-ROM drive ................................................................................................. 1-14

Tables

Table 1-1 2.5-inch HDD specifications .............................................................................. 1-12

Table 1-2 DVD-ROM drive specifications......................................................................... 1-13

Table 1-3 CD-ROM drive specifications............................................................................ 1-14

Table 1-4 CD-R/RW drive specifications........................................................................... 1-15

Table 1-5 CD-RW/DVD-ROM drive specifications .......................................................... 1-16

Table 1-6 DVD-Multi drive specifications.......................................................................... 1-17

Table 1-7 Battery specifications ........................................................................................ 1-19

Table 1-8 Quick/normal charging time.............................................................................. 1-19

Table 1-9 RTC battery charging/data preservation time .................................................... 1-20

1-iv Satellite M20 Maintenance Manual

1.1 Features

1 Hardware Overview

1.1 Features

The Toshiba Satellite M20 is a lightweight notebook PC based on the Mobile Banias 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 a 14.1-inch XGA LCD panel, capable of displaying up to 16M colors at a resolution of 1024 by 768 pixels (XGA).

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 Mobile Banias (Pentium M).

1.3, 1.4, 1.5, or 1.6 GHz



Host bridge system controller

System controller: Intel 855 GM (MONTARA-GM) + ICH4-M



Memory

The computer has a pair of SO DIMM slots and comes standard with one 256MB module. It supports PC2100 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:

256 MB (16M×16×8P)

•

512 MB (16M×16×16P)

•

512 MB (32M×16×8P)

•

1024 MB (64Mx16x8P)

•

1024 MB (32Mx16x16P)

•

Satellite M20 Maintenance Manual 1-1

1 Hardware Overview



Hard disk drive (HDD)

The computer accommodates one 2.5-inch HDD with any of the following storage capacities:

20 GB (9.5 mm thick) ATA100

•

30 GB (9.5 mm thick) ATA100

•

40 GB (9.5 mm thick) ATA100

•

60 GB (9.5 mm thick) ATA100

•

80 GB (9.5 mm thick) ATA100

•



Floppy disk drive (FDD)

An external 3.5-inch FDD can be connected to a USB port.

A 3.5-inch three-mode drive is available that supports 720KB, 1.2MB, and 1.44MB formats.



Selectable bay

1.1 Features



Display



Keyboard



Batteries

The Selectable Bay can accommodate a DVD-ROM drive, CD-ROM drive, CD-RW drive, CD-RW/DVD-ROM or Multi-Drive.

This bay can also be used to install a secondary HDD or secondary battery available as an option.

The LCD displays available come in the following three sizes:

14.1” XGA-TFT color display, resolution 1024×768, 16M colors

•

The computer can use an external monitor along with the LCD display at the same time.

The keyboard has 85 keys conforming to the US key layout.

The keyboard has 86 keys confirming to the UK key layout.

The keyboard has 86 keys confirming to the Korea key layout.

The computer has a removable Lithium Ion battery pack and an internal RTC battery.

1-2 Satellite M20 Maintenance Manual

1.1 Features



Universal Serial Bus (USB) ports

The computer has two USB ports to daisy-chain a maximum of 127 USB devices. The serial data transfer rate is 480 Mbps (high speed), 12 Mbps (full speed) or 1.5 Mbps (low speed). These ports support PnP installation and hot plugging.



Parallel port

A Centronics compatible parallel port is provided to connect a printer or another parallel device. The port is IEEE-1284 compliant and supports Extended Capabilities Port (ECP).



Serial port (RS-232C port)

A 9-pin serial interface port is provided to connect a serial device such as a serial printer, mouse, or modem.



External monitor port

A 15-pin external monitor port is provided, through which the computer automatically recognizes an external VESA DDC 2B compatible monitor.

1 Hardware Overview



PS/2 mouse/keyboard port

A 6-pin PS/2 mouse/keyboard port is provided to connect an IBM( PS/2 compatible keyboard or mouse. It accepts a Y splitter cable.



PC Card slot

A PC Card slot is provided to hold either two PC Card Standard Type II (5.0 mm) cards or one Type III (10.5 mm) card, capable of using a variety of PC Cards including 16-bit Multiple Function PC Cards and CardBus cards.



Toshiba Pointing Device

Toshiba Pointing Device is AccuPoint.



Fast Serial InfraRed (FIR) communications port

An IrDA 1.1 compatible FIR port is provided, enabling wireless communication at a high speed of 1.15 or 4 Mbps.

Satellite M20 Maintenance Manual 1-3

1 Hardware Overview



Sound system

The AD1981B integrated audio controller supports multimedia. The sound system contains the following:

MIDI replay feature

•

Stereo speakers

•

Headphone jack

•

External microphone jack

•



LAN

The internal LAN board supports 10BASE-T and 100BASE-TX, enabling connection to a LAN at up to 100 Mbps. It also supports Wake-up On LAN. The LAN board has the RJ45 jack to directly accommodate a LAN cable.



Wireless LAN

The internal Mini PCI Card slot support both IEEE802.11.b and IEEE802.11a&b combo card. The antenna is integrated in the system unit.

1.1 Features



Internal modem

The computer contains a MDC, enabling data and fax communication. It supports ITU-TV.92. 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.

1-4 Satellite M20 Maintenance Manual

1.1 Features

Figures 1-1 and 1-2 show the front of the computer and its system unit configuration, respectively.

1 Hardware Overview

Figure 1-1 Front of the computer

Cooling Module

AC Adapter

Docking I/F Conn

Serial

Parallel

CPU

PS/2 Mouse /Keyboard

Expansion Memory

CRT

PC Card Slot

System Board

Selectable Bay

Speaker Left

Speaker Right

LAN

Head Phone

Ext. MIC

LCD/FL Inverter

Keyboard

RTC Battery

Main Battery

Int HDD

Wireless Lan

Figure 1-2 System unit configuration

Satellite M20 Maintenance Manual 1-5

1 Hardware Overview 1.2 System Unit Block Diagram

1.2 System Unit Components

Figure 1-3 is a block diagram of the system unit.

MAX 6501

ADM1032 (Thermal Sensor)

PC 2100DRAM

133MHz

Expansion Memory 256/512/1024

2nd HDD CD-ROM DVD-ROM CD-R/RW Multi Driver (LS 120) (ZIP 250)

2nd BATTERY

Int-HDD 30-80GB

9.5mm

CPU :Intel

Mobile Banias

1.3,1.4, 1.5,1.6, GHz Micro FC.PGA2

MCH-M North Bridge 855GM(Montara-GM)

HUB Link

SM Bus Cont.

South Bridge

(ICH4-M)

IDE Cont.

PCI-PC Bridge

AC97

USB Cont. (02)

Internal LPC

LAN Cont. 82562

EEPROM

USB P0-P1

USB P4

USB P5

AGP

Main CLKGeneral. (ICS950810)

CPUVID

CH7001

Mini PCI Slot

802.11b or Combo (Wireless LAN)

RJ45

MDC

Modem

CODEC AD1981B

USB Port

Antena

LM2729

LVDS

NTSC/PAL

Internal PCIBus

Cardbus Controller

PCMCIA

RJ11

AMP (TPA6011A)

USB FDD

Ti1520

LCD 14"

CRT

Speakerx2

Mic

Line out

Line in

USB

Flash ROM

Stick PointK/B

(1/2) EC/KBC (LPC 47N253)

KPAAC 1269A

PS/2

(2/2) SuperI/O (LPC47N253)

I2C

DR/RCV (MAX3243)

Main Battery

E2PROM

Serial

Parallel

FIR

I2C

PS/2

Figure 1-3 System unit block diagram

1-6 Satellite M20 Maintenance Manual

1.2 System Unit Block Diagram 1 Hardware Overview

The system unit of the computer consists of the following components:



Processor: Mobile Banias

Mobile Banias

•

Core speed: 1.3, 1.4, 1.5, 1.6 GHz

−

System bus: 400 MHz

−

Core operating at 1.484 V(1.4/1.5/1.6 GHz),1.388V(1.3 GHz)

−

Integrated level 1 cache: 64 KB

−

(32KB instruction cache and 32KB data cache) On-die level 2 cache 1 MB

−

Enhanced Intel® SpeedStep® technology

−



Memory

Two BTO/CTO-capable expansion memory slots are provided, coming standard with one 256MB module. They can hold 256/512MB/1024MB expansion memory modules available as options to grow up to 2 GB.

PC2100 DDR SDRAM supported

•

256/512/1024MB modules supported

•

256 MB (16M x 16 x 8P)

−

512 MB (16M x 16 x 16P)

−

512 MB (32M x 16 x 8P)

−

1024 MB (32M x 16 x 16P)

−

1024 MB (64M x 16 x 8P)

−

2.5 volt operation

•

No parity bit

•

64-bit data transfer

•

Satellite M20 Maintenance Manual 1-7

1 Hardware Overview 1.2 System Unit Block Diagram



BIOS ROM (flash E2PROM)

4Mb x 1 chip (512KB flash parts)

•

64 KB used for system BIOS

−

64 KB used for VGA

−

20 KB used for PnP

−

10 KB for PCI

−

24 KB used for Boot Block

−

20 KB used for LOGO

−

58 KB used for LAN

−

64 KB used for EC BIOS

−

11 KB used for ACPI

−

36 KB used for PM

−

13 KB used for SCU

−

3 KB used for USB

−

2 KB used for CF card

−

4 KB used for CPU

−

6 KB used for Crisis

−

113 KB reserved

−



System controllers

North Bridge: Intel 855 GM (MONTARA-GM)

•

South Bridge: Intel ICH4-M

•



PC Card controller

CPU interface and control

−

DRAM control

−

PCI master/slave interface (PCI R2.2 compliant)

−

Embedded video controller

−

Enhanced DMA controller

−

Interrupt controller

−

Counter/timer

−

PCI IDE controller

−

Support for ATA-66 (GB) and ATA-100 (30/40/60 GB)

−

USB interface

−

SMBus interface

−

Super I/O interface

−

Power management control

−

Suspend/resume control

−

ACPI support

−

Ti1520

•

1-8 Satellite M20 Maintenance Manual

1.2 System Unit Block Diagram 1 Hardware Overview

CardBus/PC Card controller

−



Video controller

North Bridge embedded

•

LCD control

−

External RGB output control

−

NTSC/PAL output control

−



Video RAM

Up to 64MB shared with main memory

•



Sound controller

The ICH4-M integrated audio controller supports multimedia. The sound system contains the following:

MIDI replay feature

•

Stereo speakers

•

Headphone jack

•

External microphone jack

•

ICH4-M integrated audio controller + AD1981B

•

3D sound (surround) feature

−

16-bit, 48-KHz stereo record/replay feature

−

Full-duplex (simultaneous record/replay capability)

−



KBC/EC (Keyboard Controller/Embedded Controller)

A single LPC 47N253 chip is used to serve as KBC/ EC.and Super IO.

KBC

•

Scan controller function

−

Interface controller function

−

Controlling the switching between the AccuPoint and external PS/2

−

mouse or between the built-in keyboard and external PS/2 keyboard or their simultaneous operation

Satellite M20 Maintenance Manual 1-9

1 Hardware Overview 1.2 System Unit Block Diagram

•

Power supply sequence control

−

Thermal control

−

LED control

−

Beep control

−

Device ON/OFF

−

Cooling fan speed control

−

Universal I/O port

−

Dock power supply control

−

Battery capacity check

−

Flash memory reprogramming function

−

EC access interface

−

I2C communication control

−



RS-232C driver

MAX3243

•

Conversion of signal levels for communication with an external device

−



Battery E

PROM

24C02 equivalent (128 words x 16 bits, I2C interface) integrated in the battery

•

pack



Clock Generator

ICS950810A

•



Modem Controller

Built-in MDC card with XircomLucent Mars3+SiDAA

•

Functions of the modem controller:

•

Storing records of battery use

−

Generating the clock signal required for the system

−

Digital signal conductor protection

−

Ring wake-up support

−

Communication codes supported:

−

For data communication: V.90 (56K bps) data communication control V.32 bis (14.4K, 12K, 9600) V.22 bis (2400, 1200) V.22 (1200) V.23 (1200, 600, 75) V.21 (300)

1-10 Satellite M20 Maintenance Manual

1.2 System Unit Block Diagram 1 Hardware Overview

For fax: V.17 (14.4K, 12K, 9600, 7200) V.29 (9600, 7200, 4800) V.27 ter (4800, 2400) V.21 ch2 (300) －AC97 interface



LAN controller

Intel 82562

•

Wake-up On LAN support

−

Remote boot support

−

100BASE-TX support

−



Wireless LAN controller

Support following 4 kind of miniPCI wireless LAN cards.

•

IEEE802.11b (Agere)

−

IEEE802.11b (Intel)

−

IEEE802.11b (Cisco)

−

IEEE802.11a&IEEE802.11b (Atheros)

−

Transfer Rate

•



Super I/O

IEEE802.11b : max11Mbits/s

−

IEEE802.11a : max54Mbits/s

−

Frequency Channel

•

IEEE802.11b : 2.4GHz

−

IEEE802.11a : 5.0GHz

−

LPC 47N253

•

Serial port control

−

Parallel port control

−

Infrared communications control

−

Satellite M20 Maintenance Manual 1-11

1 Hardware Overview 1.3 2.5-inch HDD

1.3 2.5-inch HDD

The computer contains an extremely low-profile and lightweight, high-performance HDD. The HDD incorporates a 2.5-inch magnetic disk and mini-Winchester type magnetic heads.

Storage capacities supported are 20,30, 40, 60 and 80 GB.

The HDD interface is Enhanced IDE, ATA66 (for GB), or ATA100 (for 20/30/40/60/80 GB).

The HDD is shown in Figure 1-4 and its specifications are listed in Table 1-1.

Figure 1-4 2.5-inch HDD

Table 1-1 2.5-inch HDD specifications

Specifications

Item

Formatted capacity (GB)

User data sectors

Bytes/sector 512 512 512 512 512 512 512

Rotational speed (RPM)

Toshiba Hitachi Toshiba Toshiba Hitachi Hitachi Toshiba

MK6021

GAS

60.0116GB 60.0116GB 60.0116GB 30.0058GB 40.0007GB 30.0058GB 40.0007GB

117,210,240 117,210,240 117,210,240 58,605,120 78,140,160 58,605,120 78,140,160

4200rpm 5400rpm 5400rpm 4200rpm 5400rpm 4200rpm 5400rpm

DK23EB-

MK6022

GAX

MK3021

GAS

DK23EB-

DK23EA-

MK4019

GAX

1-12 Satellite M20 Maintenance Manual

1.4 DVD-ROM Drive 1 Hardware Overview

1.4 DVD-ROM Drive

The DVD-ROM drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. The drive provides high-speed data transfer, playing back a DVD at up to 8x speed and reading up to 10,820 Kbytes per second from DVD-ROM and 3,600 Kbytes per second from CD-ROM.

The DVD-ROM drive is shown in Figure 1-5 and its specifications are listed in Table 1-2.

Figure 1-5 DVD-ROM drive

Table 1-2 DVD-ROM drive specifications

Item DVD-ROM mode CD-ROM mode

Data transfer rate (Mbytes/s) 33.3 (U-DMA transfer mode 2)

Access time (ms)

Average random access (ms)

Average full stroke access (ms)

Rotational speed (RPM) 4,670 Max 5,100Max

Data buffer size (Kbytes) 256

Formats supported DVD-ROM, DVD-R (Read)

110 (Typ.) 200 (Typ.)

CD-DA, CD+(E)G, CD-MIDI, CD-TEXT

CD-ROM, CD-ROM XA, CD-I

CD-I Bridge (Photo-CD, Video-CD)

Multisession CD (Photo-CD, CD-EXTRA, CD-R, CD-RW)

85 (Typ.) 180 (Typ.)

CD-R (Read), CD-RW (Read)

Satellite M20 Maintenance Manual 1-13

1 Hardware Overview 1.5 DVD-ROM Drive

1.5 CD-ROM Drive

The CD-ROM drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. The drive provides high-speed data transfer at up to 24x.

The CD-ROM drive is shown in Figure 1-6 and its specifications are listed in Table 1-3.

Figure 1-6 CD-ROM drive

Table 1-3 CD-ROM drive specifications

Item

Data transfer rate (Mbytes/s)

Access time (ms)

Average random access Average full stroke access

Rotational speed (RPM) 5,136

Data buffer size (Kbytes) 128

Formats supported CD-DA, CD-ROM, CD-R, CD-ROM XA, CD-I

FMV, Photo CD (Multisession) , VIDEO CD, CD Extra (CD Plus), CD-G, CD-RW

24× mode (Max.)

33.3 (U-DMA transfer mode 2)

110 (Typ.) 240 (Typ.)

1-14 Satellite M20 Maintenance Manual

1.6 CD-R/RW Drive 1 Hardware Overview

1.6 CD-R/RW Drive

The CD-R/RW drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs.

The specifications of the CD-R/RW drive are listed in Table 1-4.

Table 1-4 CD-R/RW drive specifications

Item Specifications

Data transfer rate (Mbytes/s) 16.6 (U-DMA transfer mode 2)

Access time (ms) 110 (max 24, Typ.)

Speed Read:

CD-ROM, CD-R (max 24)

CD-RW (max 24)

Write:

CD-R (max 8)

CD-RW (max 8)

Cache (Mbytes) 2

Formats supported Video CD, Photo CD, CD-ROM, CD-ROM XA,

CD-EXTRA, CD-R, CD-Rewritable, CD-DA, CD-Text

Satellite M20 Maintenance Manual 1-15

1 Hardware Overview 1.7 CD-RW/DVD-ROM Drive

1.7 CD-RW/DVD-ROM Drive

The CD-RW/DVD-ROM drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. At maximum, the drive can play back a DVD at 8x speed, read CD-ROM at 24x speed, and write CD-R at 24x speed and CD-RW at 10x speed.

The specifications of the CD-RW/DVD-ROM drive are listed in Table 1-5.

Table 1-5 CD-RW/DVD-ROM drive specifications

Item DVD-ROM mode CD-ROM mode CD-R/CD-RW

(Write mode)

Data transfer rate (Mbytes/s) 33.3 (U-DMA transfer mode 2)

16.7 (PIO mode 4, Multiword DMA mode 2)

Access time (ms)

Average random access Average full stroke access

Rotational speed (RPM) 4,594 Max 5,136 Max 2,297 Max

Data buffer size (Mbytes) 2

Formats supported DVD:

110 250

DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18), DVD-R (read)

CD:

CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video-CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio, CD-R, CD-RW), CD-R, CD-RW

90 200

CD-DA, CD+(E)G, CD-MIDI, CDTEXT, CD-ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, VideoCD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio)

1-16 Satellite M20 Maintenance Manual

+ 266 hidden pages