Yamaha c 45

Page 1

STEREO CONTROL AMPLIFIER

I FRONT PANEL

YAMAHA mama,» BULNJ mean cums-at amass: 5.45

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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 Vamaha
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 Vamaha Retailer or the
appointed service representative.

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute
authorization, certification, incognition of any applicable technical capabilities, or
establish a principleeagent relationship of any form.

The data provided is believed to be accurate and appliCable to the unitis} indicated on the covertThe
research, engineering, and service departments of Yamaha are continually striving to improve Yamaha
products. Modifications are, therefore, inevitable and specifications are subiect to change without notice
or obligation to retrofit, Should any discrepancy appear to exist, please contact the distributorsService
Division.

WARNING: Static discharges can destroy expensive components, Discharge any static electricity your
body may have accumulated by wounding yourself to the ground buss in the unit (heavy
gauge black wires connect to this bussL

IMPORTANT: Turn the unit OFF during disassembly and parts replacement, Recheck all work heme
you wow power to the unit

l CONTENTS

T0 SERVICE PERSONNEL . . . . ..... . . . . . . 1 ADJUSTMENT POINTS ...... . ...... . . . . . 5

1 SPECIFICATION. ............ 1 CONFIRMATIONS ...... 6

I DIMENSIONS.......... ............. .. 1 WIRING.......... ............... 7
) REAR PANELS ......... . . . . . . . . . . . . . . 2 PRINTED CIRCUIT BOARD (Pattern Side) . . 8~11
INTERNAL VIEW . . . . . . . . . 3 SCHEMATIC DIAGRAM . . . ...... . . . . . 12
DISASSEMBLY PROCEDURE . . . . . . . . ..... 3 , IC BLOCK DIAGRAM ........ . ..... . . . . . 13

BLOCK DIAGRAM ....... . . . . ...... . . . . 4 PARTS LIST . . . ........ . . . . . . . ..... 14~20

YAMAHA

0°26 NIPPON GAKKI c LTD. HAMAMATSU. JAPAN

Z.86K»273 E6) Printed in Japan 86.4