Yamaha cx 70

Page 1

STEREO CONTROL AMPLIFIER

CX-7O

SERVICE MANUAL

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IMPORTANT NOTICE

This manual has been provided for the use of auflloriled Yamaha Retailers and their service personnel. It has been assumed that basic service procedures lnherant to me
industry, and more specifically Yamaha Products, are already known and understood by the users, and have merefore not been restatedr

WARNING: Failure to follow appropriate service and safety procedures when servicing this product may resulr in personal iniury. deslrucu'on of expensive components
and failure of me product to perform as specified, For rhese reasons, we advise all Yamaha product owners that all service required should be performed by
an aurhorized Yamaha Retailer or the appointed service representative.

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authoritarian, certification, recognition of any applicable technical
capabilities, or establish a principleragent relationship of any forma

The data provided is believed to be accurate and applicable to the unitls) indicated an die cover. The research, engineering, and service departments of Yamaha are continually

striving to improve Yamaha Droducu. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any

discrepancy appear to exist, please Contact the dislribumr's Service Division.

WARNING: Static discharges can destroy expensive components Discharp any static electrlcity your body may have accumulated by grounding yoursell to the ground
bass in me uni: (heavy gauge blaek wires eonneel to mis puss).

IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.

I CONTENTS

TOSERVICE PERSONNEL.................
SPECIFICATIONS........................
DIMENSIONS
REAR PANELS
INTERNAL VIEW
DISASSEMBLY PROCEDURES...............
IC BLOCK

ADJUSTMENTS POINTS 3
BLOCK DIAGRAM....................... 4
WIRING..........
PRINTED CIRCUIT BOARD ..............6~11
SCHEMATIC DIAGRAM 12
PARTS LlsT ........................13~2o

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YAMAHA

YAMAHA CORPORATlON HAMAMATSU. JAPAN
2.05K~204 @ 6) Printed in Japan 886

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