Yamaha ax 730

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IMPORTANT NOTICE
(if TIU$ manual has been provided for the use or authorized Yamaha Retailers and their service personnel,
, J t 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 therelore 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 to any individual or firm does not constitute
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 unitis) indicated on the cover. The

research, engineering, and service departments or Yamaha are continually striving to improve Yamaha

products Modifications are, therefore, inevitable and specifications are when to change without notice or
obligation to retrofits 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 wives connect to this buss).

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

I CONTENTS

TO SERVICE PERSONNEL ........................................ 1 ADJUSTMENTS ......... . ................................................ 5
REAR PANELS ........................................ ............. 1 IC BLOCK .................................................................. 6
INTERNAL VlEW---~- ..... .................... . .......... 2 WIRING ..................................................................... 7
SPECIFICATIONS ...................................... ............. 3 PRINTED CIRCUIT BOARD~~ ........ . .................... .. 8~13
BLOCK DIAGRAM ........ .................... ..... 4 SCHEMATIC DIAGRAM ....................................... 14,15
DISASSEMBLY PROCEDURES .................................. 5 PARTS LIST ................................................. 16~25

AA

YAMAHA CORPORATION
PO ch1, Hamamalsu, Japan

3.2K-361 © Printed in Japan 89.11