Yamaha ax 397

Page 1

STEREO AMPLIFIER

AX-397

SERVICE MAN UAL

l IMPORTANT NOTICE

This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel,
II has been assumed iliat basic servree procedures iulierenr ro ihe indusny, and more specifically YAMAHA Products. are already
known and understood by the users and have therefore not been restated,

WARNING: Failure ro follow appropriate service and safety procedures when serwcmg this product ruay resuli in personal
injury desrrucrion of expensive components and failure of the product to perform as specified. For these reasons.
we advise all YAMAHA product owners tliai any service required should be performed by an authorized YAMAHA
Reiailer or ihe appointed service representative.

IMPORTANT: The presentation or sale of this manual to any indivrdual or firm does not constitute authorization ceriificalion or

recognition of any applicable technical capabilities or esrablisli a principleeagem relariouship of any form,
The data provided is believed to be accurare and applicable re the unitts) indicated on the cover. The research, engineering and service
deparlmenls of YAMAHA are continually striving Io improve YAMAHA products. Modificmmns are. iIlerefnre. inevilable and
specifications are subjecr io change without notice or obligalion io retrofit, Should any discrepancy appear to ex|SL please coniacr rhe
disliibulors Service Division.

WARNING: Staric discharges can desrroy expensive coruponents. Discharge any sraiic electricity your body may have
accumulated by grounding yourself io rhe ground buss in ilie uuit (heavy gauge black wires connect to this buss).
i IMPORTANT: Turn ilie unit OFF during disassembly and part replacemenl, Recheck all work before you apply power to the unit.

\ ,

I CONTENTS

TO SERVICE PERSONNEL ADJUSTMENT/DD ........................... 11
MPEDANCESELECTOR CDATA/ICDDD ............................ 12
REMOTECONTROLPANEL BLOCKDIAGRAM........................... 13
FRONT PANEL .. .. PIN CONNECTION DIAGRAM/DDDDDD ...... 14!

REAR PANELS . .
SPECIFICATIONS / D [l [I D

NTERNAL VIEW . . . .. . .
DISASSEMBLY PROCEDURES / [I D D D

PRINTED CIRCUIT BOARD ..
SCHEMATIC DIAGRAM
PARTS LIST . . . . .
REMOTE CONTROL RAX15 . .

15-20
21-22

COV- E7s7:;7M3. I J 7-7ifiimfiififléfifi LTLiL
This Service Manual uses recycied paper.

© 2005 YAMAHA CORPORATON. Ali righls reseved.

This manual IS copyrighted by YAMAHA and may not be copied or
redistributed either in punt or electronically Without permission. YAMAHA CORPORATION
POBox 1 Hamamaisu Japan

M 05.09

L6E'XV