Yamaha CDR400At User Manual

CDR400At

SERIES

User Guide

Guide de I’utilisateur

Bedienungsanleitung

COMPLIANCE INFORMATION STATEMENT

(DECLARATION OF CONFORMITY PROCEDURE)

Responsible Party: Yamaha Systems Technology, Inc.

Address: 100 Century Center Court

San Jose, California 95112

Telephone: [phone]

FAX: [phone]

Type of Equipment: CD Recorder

Model Name: CDR400At

CDR400At-NB

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following conditions:

1) this device may not cause harmful interference, and

2) this device must accept any interf erence received including interference that may
cause undesired operation.

See user manual instructions if interference to radio reception is suspected.

FCC INFORMATION (U.S.A.)

1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!
This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not
expressly approved by Yamaha may void your authority, granted by the FCC, to use the product.

2. IMPORTANT: When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s
supplied with this product MUST be used. Follow all installation instructions. Failure to follow instructions could void your FCC
authorization to use this product in the USA.

3. NOTE: This product has been tested and found to comply with the requirements listed in FCC Regulations, Part 15 for Class “B”
digital devices. Compliance with these requirements provides a reasonable level of assurance that your use of this product in a
residential environment will not result in harmful interference with other electronic devices. This equipment generates/uses radio
frequencies and, if not installed and used according to the instructions found in the users manual, may cause interference harmful to
the operation of other electronic devices. Compliance with FCC regulations does not guarantee that interference will not occur in
all installations. If this product is found to be the source of interference, which can be determined by turning the product “OFF”
and “ON”, please try to eliminate the problem by using one of the following measures:
Relocate either this product or the device that is being affected by the interference.
Utilize power outlets that are on different branch (circuit breaker or fuse) circuits or install AC line filter/s.
In the case of radio or TV interference, relocate/reorient the antenna. If the antenna lead-in is 300 ohm ribbon lead, change the
lead-in to coaxial type cable.
If these corrective measures do not produce satisfactory results, please contact the local retailer authorized to distribute this type of
product. If you can not locate the appropriate retailer, please contact Yamaha Systems Technology, Inc. 100 Century Center Court,
San Jose, CA95112, U.S.A.

• This manual applies to the CDR400At and CDR400At-NB.
The CDR400At front panel displays the YAMAHA brand name.
The CDR400At-NB front panel does not display a brand name.

Laser Diode Properties

Material : GaAlAs
Wavelength : 782-789 nm
Emission Duration : Continuous
Laser Output Power : Less than 44.6 µW*

*

This output is value measured at a

distance 200mm from the objective lens
surface on the optical pick-up block.
ANSI Class : Class 1

This compact disc player is
classified as a CLASS 1

CLASS 1 LASER PRODUCT

LASER KLASSE 1 PRODUKT

LASER product.
The CLASS 1 LASER
PRODUCT label must be
located on the exterior.

VORSICHT : UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG
GEOFFNET. NICHT DEM STRAHL AUSSETZEN.

VARNING : OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH
SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN ÄR FARLIG.

VARO! : AVATAESSA JA SUOJALUKITUS OHITETTAESSA OLET
ALTTINA NÄKYMÄTTÖMÄLLE LASERS TEILYLLE. ÄLÄ KATSO SÄTESSEN.

ADVARSEL : USYNLIG LASERSTRALNING VED ÅBNING NÄR SIKKERHETSAF­ BYDERE ER UDE AF FUNKTION. UNDGÅ UDSETTELS FOR STRÅLING.

CAUTION

Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.

Varningsanvisning för
laserstrålning.

❢

WARNING

WARNING

• The temperature where CDR400At is located
should be between 5ºC and 40ºC (41ºF – 104ºF),
when used in a fan-cooled system.

• Do not disassemble the CDR400At cover to
reduce the risk of electric shock.

• Always remove the disc before transporting
CDR400At.

W ARNING ❢

i

Important Precautions

• Please read the following precautions before
attempting to operate the CDR400At.

• Before recording a disc, be sure to clean the disc
and tray using an air aerosol-type dust remover.
A dust particle on the disc may cause recording
to fail, producing an unusable disc.

• Always record in a dust-free environment. If the
disc must be removed from the CDR400At before
recording is finished, store the disc in a clean,
dust-free environment.

• The CDR400At contains no user serviceable parts.
Refer all servicing to qualified personnel.

• If any of the following should occur, the
CDR400At should be serviced by qualified per­sonnel:

Important Precautions

Metal objects or liquids get inside the CDR400At.
The CDR400At does not operate normally or a

marked change in performance is noticed.

• Do not place heavy objects on the CD-R discs.

• Do not subject the CDR400At and computer to
impact or shock when in use, as this may impair
recording or playback.

• Yamaha is not responsible for any data or infor­mation losses resulting from the operation of the
CDR400At.

ii

©1998

All Righ

Table of Contents

Table of Contents

Introduction ............................................................................ 1

CDR400At Features ..................................................... 1

Orange Book Compatible Recording ........................... 2

Chapter 1 - System Configuration .................................... 3

Computer ...................................................................... 3

Software ........................................................................ 3

Tools ............................................................................. 4

Discs ............................................................................. 4

Chapter 2 - Installing the Yamaha CDR400At Drive ..... 5

CDR400At drive settings .............................................. 5

Installing the CDR400At drive ..................................... 8

Chapter 3 - Operation ......................................................... 13

Front Panel .................................................................. 13

Loading a Disc ............................................................ 14

Ejecting the Disc ......................................................... 15

Manual Eject (emergency use) ................................... 16

Troubleshooting .................................................................. 17

Appendix ............................................................................... 18

Specifications .............................................................. 18

Front Panel Indicator Key ........................................... 19

Yamaha Corporation.
This document may not, in whole or in part, be copied, photocopied, reproduced,
translated, transmitted or reduced to any electronic medium of machine readable
form without prior consent in writing from Yamaha.
MS-DOS and Windows are registered trademarks of Microsoft, Inc.
Unix is a registered trademark of UNIX System Laboratories.
All other trademarks are the property of their respective companies.

iii

ts Reserved.

Introduction

Thank you for purchasing a Yamaha CDR400At drive. Please read
this manual before using the drive in order to make the best use of the
superior CDR400At functions.
After reading, please retain this manual for future reference.

CDR400At Features

4xS Recording - 6xS Reading

The CDR400At is a CD-ROM recorder capable of recording at quad
speed (4xS), double speed (2xS), or normal speed (1xS).
It can read discs at up to 6xS.

Compatible with Seven Different Formats

The CDR400At can both record and read seven different formats:
CD-ROM, CD-ROM XA, CD-I, CD-DA, CD-Bridge (multisession),
CD-Extra, and Video CD. The CDR400At is also equipped with an
analog audio output terminal (headphones) for CD-DA.

■

■

Introduction

■

SCSI 2 Interface for Data Transfer

The CDR400At features SCSI 2, the second generation SCSI interface
for connecting computers and peripheral devices.

■

Compatible with Windows 95 Plug and Play

SCSI IDs are set automatically by the SCAM protocol (level 1).

■

Orange Book Part 2 Compatible 5-Mode Recording

The CDR400At conforms to the five recording modes outlined in the
Orange Book Part 2: Track at Once, Multisession, Disc at Once, Ses­sion at Once, and Packet Writing.

1

Introduction

Orange Book Compatible Recording

Track at Once

In this mode, data can be recorded to disc one track at a time. Discs
recorded in this mode cannot be played in CD players or CD-ROM
drives other than a CD-R drive until the session is closed.

Multisession

In this mode, data can be recorded to disc in stages (one session at a
time). Additional data can be written later.

Disc at Once

In this mode, data can be recorded to an entire disc in one pass. It is
not possible to write additional data later.

Session at Once

In this mode, data can be recorded to disc one session at a time. To
use this mode, your software must support Session at Once recording.
New sessions can be written later.

Packet Writing

This is useful for data back-up. Smaller units of data can be added to
tracks. To use this mode, your software must support Packet Writing.
The CDR400At supports sequential packet writing.

2

Chapter 1 - System Configuration

Chapter 1 - System Configuration

Before using the CDR400At, make sure that you have all of the items
on the list of included items.

In order to use the CDR400At, you will require the following.

Computer

The following operating environment is required:

• An IBM/A T compatible computer with a 100 MHz or f aster Pentium
CPU (in order to write at 4x speed), or a 100 MHz or faster 486
CPU (in order to write at 2x speed)

• A vacant slot in which to install a SCSI card or a pre-installed
SCSI card

• A vacant half-height bay

• Windows 95, Windows NT4.0 or Higher

• Sufficient hard disk space

Note: You will need about twice as much space on your hard disk as that

required by the data you wish to write to CD-ROM.

Software

SCSI card

This is required in order to connect a SCSI device (the Yamaha
CDR400At) to your computer.

We recommend the following:
Adaptec SCSI cards: AHA-2940 (PCI), AHA-284x (VL), AHA-2740
(EISA), AHA-154x (ISA), etc.

Use writing software or packet writing software which supports the
CDR400At or CDR400t.

3

Chapter 1 - System Configuration

Tools

• Phillips screwdriver
This is used to remove the

cover of your computer, and to install the Yamaha CDR400At drive.

• Long nose pliers
These are used to insert or remove the

jumper pin when setting the SCSI ID
and parity settings etc.of the Yamaha
CDR400At drive.

Discs

CD-R Discs

On the CDR400At, you can use conventional CD-R discs that conform
to the Recordable Compact Disc Systems Part 2 (Orange Book).
Yamaha recommends the following Yamaha CD-R discs:

> CDM12Y63 (
> CDM12Y74 (
> CDM12Y74M (
> CDM12Y74T (

Read-only Discs

You can use discs with the logo which conform to the Compact
Disc Read Only Memory standard (CD-ROM standard, Yellow Book).
If you wish to use the audio functions, use discs with the logo,
which conform to the Compact Disc Digital Audio standard (Red Book).

φ

120mm, 63 minutes)

φ

120mm, 74 minutes)

φ

120mm, 74 minutes)

φ

120mm, 74 minutes)

4

♦

♦

♦

♦

♦

Chapter 2 - Installing the Yamaha CDR400At Drive

Chapter 2 - Installing the Yamaha CDR400At Drive

CDR400At drive settings

Before installing the CDR400At in your computer, you will need to
set the following jumpers.
You set these jumpers by inserting jumper connectors into the jumper
switch located on the rear panel of the CDR drive.

SCSI ID settings
Parity setting
Terminator setting
Block size setting

Important: Use long-nose pliers to remove or insert jumper connectors.

In the diagrams in this manual, solid black fill is used to indicate
locations where a jumper is used to short between pins.

Rear Panel

Important:

AUDIO OUT

1 2 4

RGL

Jumper Switch

ID SELECT
PARITY

TERMINATOR

BLOCK SIZE

SCSI
INTERFACE
CONNECTOR DC INPUT

1G

5V+12V

+

SCSI ID settings

The SCSI ID number is used so that the computer will recognize a
connected SCSI device. You can assign 0 through 7 as the SCSI ID
number. Usually, “7” is reserved for the SCSI card ID number, and
“0” is reserved for the first SCSI device in the chain.
Use a number between 1 and 6 for the CDR400At. Refer to the dia­gram below for more information on setting the SCSI ID number . The
factory set ID number is “3”.

If you are using other SCSI devices, be sure to use a unique ID number
for each device.

5

Chapter 2 - Installing the Yamaha CDR400At Drive

Note: When you are using W indows 95, and if the SCSI ID setting on the rear

panel is the same as the number assigned to another SCSI device, the
Plug and Play component of Windows 95 will automatically assign an
unused number to the CDR400At (SCAM protocol level 1).

SCSI ID Setting

124

SCSI ID 1

124

SCSI ID 5

* Use jumper connectors to short the locations shown in black.

♦

Parity setting

Parity ON

124

SCSI ID 0

124

SCSI ID 4

(with a jumper)

— Parity Check will be performed.

Parity OFF

(without a jumper)

— Parity Check will not be performed.

Parity ON (default) Parity OFF

ID SELECT
PARITY
TERMINATOR

124

BLOCK SIZE

124

SCSI ID 2

124

SCSI ID 6

124

SCSI ID 3

124

SCSI ID 7

Normally, use this setting.

ID SELECT
PARITY
TERMINATOR

124

BLOCK SIZE

* Use jumper connectors to short the locations shown in black.

6

Chapter 2 - Installing the Yamaha CDR400At Drive

Terminator setting

The terminator setting indicates whether or not this device is the last
connected SCSI device.

Terminator ON (with a jumper)

— Use this setting if the CDR400At is the last device in the internal

SCSI daisy-chain.

Terminator OFF

— Use this setting if devices other than the CDR400At are in the inter-

nal SCSI daisy-chain and the CDR400At is not the last device.

Terminator ON (default) Terminator OFF

124

(without a jumper)

ID SELECT
PARITY
TERMINATOR
BLOCK SIZE

* Use jumper connectors to short the locations shown in black.

124

ID SELECT
PARITY
TERMINATOR
BLOCK SIZE

♦

♦

Block size setting

Block size ON

(with a jumper)

— Block Size is set to 512Byte/sector. This function is v alid only for

workstations, such as those that run UNIX.

Block size OFF

—

Normally, use this setting.

Block size ON Block size OFF (default)

(without a jumper)

124

ID SELECT
PARITY
TERMINATOR
BLOCK SIZE

* Use jumper connectors to short the locations shown in black.

124

ID SELECT
PARITY
TERMINATOR
BLOCK SIZE

7

Chapter 2 - Installing the Yamaha CDR400At Drive

Installing the CDR400At drive

The following steps will differ slightly depending on the type of computer
you are using. For details on removing the cover from your computer,
and installing or removing internal devices, refer to the manual for your
computer.

1. Switch off your computer, and unplug it fr om the AC outlet.

If you fail to do this, there is a danger of electric shock and/or of causing
short circuits, which may damage the computer and/or CDR400At drive.

OFF

PUSH

2. Remove the cover from your computer.

Be careful not to lose the screws that were removed.

3. Your hands or body ma y be holding a c har ge of static elec­tricity . Touch a metallic portion of the chassis or power sup­ply to release any such charge.

8

Chapter 2 - Installing the Yamaha CDR400At Drive

4. Remove the front cover of a vacant half-height drive bay.

For details refer to the manual of your computer.

5. Remove the SCSI card, and set the terminator setting of the

SCSI internal circuit to the position for internal connected
devices. For details refer to the manual of your SCSI card.

6. Slide the CDR400At drive into the drive bay from the front.

At this time, be careful not to apply excessive force to the dri v e itself.
Finger-tighten the four fastening screws, and check that there is enough
room to connect the power supply cable, SCSI cable, and AUDIO cables.

7. Connect the SCSI flat cable.

Connect the 50-pin SCSI flat cable to the SCSI card and to the SCSI
interface located on the rear panel of the CDR400At drive.
Position the connector so that the colored line is at pin 1 (your lower right).

9

Chapter 2 - Installing the Yamaha CDR400At Drive

ID SELECT

VZ49880-0

AUDIO OUT

R G L

8. Connect the AUDIO cable.

Connect the single 4-pin connector (Sound Blaster compatible) to the
sound card. Connect the 4-pin connector at the other end of the cable (the
larger connector) to the AUDIO OUT connector on the CDR400At drive.
The polarizing lug should be at the top.

VZ49880-0

AUDIO OUT

R G L

PARITY
TERMINATOR
BLOCK SIZE

1 2 4

ID SELECT
PARITY
TERMINATOR
BLOCK SIZE

1 2 4

SCSI
INTERFACE
CONNECTOR DC INPUT

1 +5V G +12V

SCSI
INTERFACE
CONNECTOR DC INPUT

1 +5V G +12V

VZ49880-0

VZ49880-0

10

AUDIO cable

To the CDR400At

4-pin connector (large)

To the CDR100/102
(3-pin connector)

* Simultaneous use with the

CDR400At is not possible.

To the Sound Card (Sond Blaster compatible)
4-pin connector (small)

Chapter 2 - Installing the Yamaha CDR400At Drive

9. Connect the power supply cable.

Connect the +12V and +5V 4-pin power cable to the power supply
interface located on the rear panel of the CDR400At drive.
The shape of the connector makes it impossible to reverse the connections.

If you have difficulty when inserting the connector , try wiggling the con­nector left and right while inserting it.

VZ49880-0

SCSI
INTERFACE
CONNECTOR DC INPUT

ID SELECT

R G L

PARITY
TERMINATOR
BLOCK SIZE

1 2 4

VZ49880-0

AUDIO OUT

10.Tighten the four fastening screws securely.

1 +5V G +12V

11

Chapter 2 - Installing the Yamaha CDR400At Drive

11.Attach the cover of your computer.



12. Connect the power cable to an AC outlet, and switch on your

computer.

Make sure that the LED located on the panel of the CDR400At drive is lit.

PUSH

ON

12

13.Start up your operating system.

For the procedure, refer to the manual for your operation system.

14.Install the writing software.

For the installation procedure, refer to the manual for your writing
software.

Chapter 3 - Operation

Front Panel

Chapter 3 - Operation

1

76

2

1 Disc tray

The disc is inserted and ejected here. Pressing the eject button will open
the tray.

2 Headphone jack

This stereo mini jack allows you to connect headphones and listen to
audio.

3 Headphone volume control

This control adjusts the volume level of the headphone output. Rotating
the control clockwise will increase the volume level.

4 ON/DISC LED

This indicator lights up in orange when the CDR400At is powered on,
and lights up in green when the CDR400At contains a disc.

5 READ/WRITE LED

This indicator lights up in green when data is being read, and flashes
when data is being accessed. It also lights up in orange when data is
being recorded on a disc.

6 Eject button

This button is used to open or close the tray.

7 Manual Eject hole

This is used to manually eject a disc that cannot be ejected in the nor­mal way. It is for emergency use only.

3

45

13

Chapter 3 - Operation

Loading a Disc

1. Press the eject button to open the tray.

2. Carefully place the disc, label-side up, on the disc tray.

3. Press the disc tray softly or press the eject button again to

close the disc tray.

14

Chapter 3 - Operation

Ejecting the Disc

If the CDR400At is powered on:

Press the eject button to eject the disc.

Note: You cannot eject the disc if the SCSI command prohibits the eject opera-

tion while the CDR400At is reading data.

Caution: Be sure to remove the disc after it is completely ejected. (Trying to

remove the disc before it is completely ejected may cause the drive to
malfunction.)

Press the eject button

If the CDR400At is not powered on:

Pressing the eject button will not eject the disc.

15

Chapter 3 - Operation

Manual Eject (emergency use)

Here we explain how to eject the disc when it cannot be ejected in the
normal way; for example, the power is shut off inadvertently or the
loading mechanism fails. This technique should be used only as a last
resort. Frequent use may lead to malfunction.

You’ll need a pin-like object of 2 mm or less in diameter to do this. A
straightened paper clip makes an ideal tool.

1. Insert the pin-like tool into the manual eject hole and push

gently .

The spring-loaded mechanism ejects the disc.

16

2. After manually ejecting a disc, you must turn off the power

supplied to the CDR400At, then turn it on before continuing.

Troubleshooting

Troubleshooting

If CDR400At is not performing as expected, look up the symptoms in the following table,
and take the appropriate corrective action.

Symptoms Corrective action

The power to the CDR400At is off • Check the DC power cable connection.
The power to the computer is off • Check to see if the SCSI card is correctly installed.
The CDR400At is not recognized by

the computer

The CDR400At does not operate
correctly

The disc tray will not open • Make sure that the power to the driv e is turned on.
The disc ejects • Make sure that the disc is seated in the tray cor-

Incorrect operation • Make sure that the disc is seated in the tray cor-

• Check the SCSI cable connection.

• Make sure that SCSI ID numbers are assigned
exclusively.

• Make sure that the last device in the SCSI daisy
chain is terminated correctly.

• Install the SCSI driver software again.

rectly.

rectly.

• Make sure that you are using the correct disc.

• Make sure that there is no dust, dirt, or conden­sation on the disc or tray.

17

Appendix

Specifications

Interface SCSI 2
Data Capacity 650MB (74 minutes)

550MB (63 minutes)

Record/Read Speed Writing: Normal speed, 2X speed, 4Xspeed

Reading: Normal speed, 2X speed, 4X speed, 6X speed

Data Transfer Rate 6xS: 900KB/sec

2xS: 300KB/sec

Burst Transfer Rate 4.2MB/sec (record asynchronous)

3.4MB/sec (read asynchronous)
Buffer Size 2MB (500 sectors)
Access Speed 250ms
Installation Horizontal
Disc Loading Tray
Audio Out Frequency Response 20 - 20,000Hz (Line Out)
(normal speed) Output Level 1 Vrms (Line Out)
Power Consumption 11W (read/write)
Power Supply 5V ±5%, 12V ±10%
Environment Temperature: +5°C - +40°C (read/write, when used in

a fan-cooled system)

Humidity: 25 - 80%
Dimensions (WxHxD) 146 x 41.3 x 193.1 mm (excluding front panel)
Weight 950g

4xS: 600KB/sec
1xS: 150KB/sec

Rear Panel Connector

SCSI/Power Supply Non-shielded two-in-one, 50p + 4p
ID Selector Short-pin 12p
Audio Out MOLEX 53532-04

Specifications are subject to change without prior notice.

18

Front Panel Indicator Key

● on: green ✦ flashing: green — off
❍ on: orange ✧ flashing: orange

Status ON/DISC Read/Write

Reset ❍ ➠ — ❍ ➠ —
Ready (no disc) ❍ —
Inserting disc ✧ ➠ ✦ —
Ejecting disc ✧ —
Ready (disc inserted) ● —
Seeking ●✦
Preparing to write ●✧
Writing ●❍
Writing (test mode) ●✧

Appendix

Playback ●●

19

English: If you have any questions, please contact
your dealer or one of the following companies.

French: Pour plus de détails sur les produits,
veuillez vous adresser à Yamaha ou au distributeur
le plus proche figurant dans la liste suivante :

German: Bei weiteren Fragen wenden Sie sich Sitte
an Ihren Händler oder eine der folgenden Firmen.

JAPAN

Yamaha Corporation
Electronic Systems Division
203 Matsunokijima, Toyooka-mura, Iwata-gun,
Shizuoka-ken, 438-0192 JAPAN
TEL: [phone]
FAX: [phone]
Internet: www.yamaha.co.jp

U.S.A

Yamaha Systems Technology, Inc.
100 Century Center Court, San Jose, CA 95112
U.S.A
TEL: [phone]
FAX: [phone]
Internet: www.yamahayst.com

CANADA

Yamaha Canada Music Ltd.
135 Milner Avenue, Scarborough,
Ontario M1S 3R1, CANADA
TEL: [phone]
FAX: [phone]

UNITED KINGDOM, BENELUX,
PORTUGAL, SPAIN, GREECE,
CYPRUS, TURKEY and EGYPT

Yamaha-Kemble Music (U.K.) Ltd.
Media Technology Division
Sherbourne Drive, Tilbrook, Milton Keynes
MK7 8BL ENGLAND
TEL: [phone]
FAX: [phone]

GERMANY, SWITZERLAND,
AUSTRIA, EASTERN EUROPE and
RUSSIA

Yamaha Europa GmbH
Multi Media Division
Siemensstrasse 22-34,
D-25462 Rellingen, GERMANY
TEL: [phone]
FAX: [phone]
Internet: www.yamaha-europe.com

FRANCE

Yamaha Musique France S.A.
B.P. 70, 77312 Marne-la Vallée Cedex 2,
FRANCE
TEL: [phone]
FAX: [phone]

ITALY

Yamaha Musica Italia s.p.a.
Keyboard & Multimedia Division
Viale Italia 88, 20020, Lainate (Milano) ITALY
TEL: [phone]
FAX: [phone]

SWEDEN and SCANDINAVIA

Yamaha Scandinavia AB
J A Wettergrens Gate 1, Box 300 53,
S-400 43 Gothenburg SWEDEN
TEL: [phone]
FAX: [phone]
Internet: www.yamaha.se

SINGAPORE, MALAYSIA, INDIA,
INDONESIA and PHILIPPINES

Yamaha Systems Technology, Singapore Pte Ltd.
138 Cecil Street, #03-01A Cecil Court,
SINGAPORE 069538
TEL: [phone]
FAX: [phone]

V224560-1

YAMAHA CORPORATION

Electronic Systems Division

Printed in Japan