Yamaha ax 1070

Page 1

STEREO INTEGRATED AMPLIFIER

X-1 O70

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 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 procedurés 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 any service required should be perfumed by an authorized YAMAHA Retailer or the
appointed service representative.

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute

IMPORTANT NOTICE \

authorization, certification or recognition of any applicable technical capabilities, or
establish 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. 'lhe reseach,
engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products,
Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to

retrofitt Shouldany discrepancy appear to exist, please contact the distributor's Service Division

WARNING: Static discharges can destroy expensive components. Dischargeany 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).

IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you

\ apply power to the unit. /

I CONTENTS

TO SERVICE PERSONNEL........................................1
REAR PANELS 1
SPECIFICATIONS ..
BLOCK DIAGRAM..
INTERNAL VIEW
DISASSEMBLY PROCEDURES 4

ADJUSTMENTS 5
PRINTED CIRCUIT BOARD.................................6~16
it-COM DATA .....17
SCHEMATIC DIAGRAM . .18~19
REMOTE CONTROL TRANSMITTER .....20
PARTS LIST21 ~33

YAMAHA

YAMAHA CORPORATlON
P.O.Box1 ,Hamamalsudauan
i.56K-l43 fl © Printed in Japan 93.4

Page 2

AX-1 070

I TO SERVICE PERSONNEL

1. Critical Components Information.

Components having special characteristics are marked and
must be replaced with parts having specifications equal to

those originally installed.

I REAR PANELS

V A model

V W model

V R model

WALL
0 UTLET

EQUIPMENT
UNDER TEST

AC LEAKAGE
TESTER OFI
EQUIVALENT

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