Yamaha R-S300 Service Manual

This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.

It has been assumed that basic service procedures inherent to the industry, and more specifi cally YAMAHA Products, are already known

and understood by the users, and have therefore not been restated.

WARNING:

IMPORTANT:

The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service

departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and

specifi cations are subject to change without notice or obligation to retrofi t. Should any discrepancy appear to exist, please contact the

distributor's Service Division.

WARNING:

IMPORTANT:

■ CONTENTS

To Service Personnel ............................................2

Impedance Selector ...............................................3

Front Panels .............................................................4

Rear Panels ...........................................................5–6

Remote Control Panel ..........................................7

Specifications .......................................................8–9

Internal View .......................................................... 10

Service Precautions ............................................ 10

Disassembly Procedures ............................. 11–13

Updating Firmware .......................................... 14–17

Self-Diagnostic Function ............................ 18–29

R-S300

SERVICE MANUAL

IMPORTANT NOTICE

Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,

destruction of expensive components, and failure of the product to perform as specifi ed. For these reasons, we advise

all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or

the appointed service representative.

The presentation or sale of this manual to any individual or fi rm does not constitute authorization, certifi cation or

recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.

Static discharges can destroy expensive components. Discharge any static electricity your body may have

accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).

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

Amp Adjustment ...............................................30–31

Display Data .......................................................32–33

Ic Data ...................................................................34–36

Block Diagram ........................................................37

Printed Circuit Boards .................................38–53

Pin Connection Diagrams ...................................54

Schematic Diagrams .......................................55–60

Replacement Parts List ................................61–71

Remote Control .....................................................72

Advanced Setup ................................................ 73–74

RECEIVER