Yamaha r 7

Page 1

STEREO RECEIVER

R-7

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IMPORTANT NOTICE

This manual has been provided for the use of authorized Yamaha Retailers and their service personnel.
it has been assumed that basic service procedures inherant to the industry, and more specifically Yamaha
Products, are already known and understood by the users, and have therefore not been restated.

WARNING: 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 specified For these reasons, we advise all Yamaha product owners
that all service required should be performed by an authorized Yamaha Retailer or the
appointed service representative.

IMPORTANT: The presentation or sale of this manual [0 any individual or firm does not constitute
authorization, certification, recognition of any applicable technical capabilities, or
establish a principleagent relationship of any form.

The data provided is believed to be accurate and applicable to the unitls) indicated on the cover. The
research, engineering, and service departments of Yamaha are continually striving to improve Yamaha
WM fififls'sufifigv products. Modifications are, therefore, inevitable and changes in specification are subiect to change without

notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's
Service Division.

WARNING: 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).

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

I CONTENTS

TO SERVICE PERSONNEL . . . . . ............ 1 LSI DATA
SPECIFICATIONS ..... . . ............ . . . . 1 IC BLOCK . . . . . ........... . . . 14~17
BLOCK DIAGRAM . . . . ....... 2/3 PRINTED CIRCUIT BOARD ..... . . 17 ~ 23
REAR PANELS ................. . . 4 WIRING ........ .. . . . . . . . . 23
INTERNALVIEW 5 CIRCUITDATA .. ............ 24/25
DISASSEMBLY PROCEDURES SCHEMATIC DIAGRAM ..... . . . . ....... 26/27
ADJUSTMENTS . . . . . . ......... - - - RS-7 REMOTE CONTROL TRANSMITTER ..... 28
PARTS LIST .............. . . . . ..... 29~ 39

* YAMAHA

_004 I
m NIPPON GAKKI 00.. LTD. HAMAMATSU, JAPAN

I.8k>|48 n© Printed in Japan 135.5