 CONTENTSTO SERVICE PERSONNEL .......................................... 2SPECIFICATIONS .......................................................... 3INTERNAL VIEW ........................................................... 4REAR PANELS .......................................................... 5~6DISASSEMBLY PROCEDURES 7~8BLOCK DIAGRAM ......................................................... 8PRINTED CIRCUIT BOARD .......................................... 9SCHEMATIC DIAGRAM .............................................. 10PARTS LIST ........................................................... 11~152005 All rights reserved.This manual is copyrighted by YAMAHA and may not be copied orredistributed either in print or electronically without permission.SUBWOOFER SYSTEMYST-SW012IMPORTANT NOTICEThis manual has been provided for the use of authorized YAMAHARetailers and their service personnel.It has been assumed that basic service procedures inherent to the industry,and more specifically YAMAHA Products, are already known andunderstood by the users, and have therefore not been restated.WARNING: Failure to follow appropriate service and safetyprocedures when servicing this product may result inpersonal injury, destruction of expensive components,and failure of the product to perform as specified. Forthese reasons, we advise all YAMAHA product ownersthat any service required should be performed by anauthorized YAMAHA Retailer or the appointed servicerepresentative.IMPORTANT: The presentation or sale of this manual to any individualor firm does not constitute authorization, certification orrecognition of any applicable technical capabilities, orestablish a principle-agent relationship of any form.The data provided is believed to be accurate and applicable to the unit(s)indicated on the cover. The research, engineering, and service departmentsof YAMAHA are continually striving to improve YAMAHA products.Modifications are, therefore, inevitable and specifications are subject tochange without notice or obligation to retrofit. Should any discrepancyappear to exist, please contact the distributor's Service Division.WARNING: Static discharges can destroy expensive components.Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground buss inthe unit (heavy gauge black wires connect to this buss).IMPORTANT: Turn the unit OFF during disassembly and partreplacement. Recheck all work before you apply powerto the unit.YST-SW012'05.121 0 0 9 9 4P.O.Box 1, Hamamatsu, JapanSERVICE MANUAL

subwoofer system

specifications

internal view

rear panels

disassembly procedures

block diagram

parts list

Yamaha YST-SW012 Service Manual

important safety instructions

Introduction

Connections

Using the subwoofer

Advanced Yamaha Active Servo Technology II

Troubleshooting

Speciﬁcations

YST-SW012

supplied accessories

basic connection example

using the subwoofer

troubleshooting

frequency response

Connexions

Utilisation du Subwoofer

Dépannage

Fiche technique

technische daten

tekniska data

technische gegevens

Frequency response