Yamaha avs 70

Page 1

HOME THEATER SYSTEM

AV-S70/NX-SW7O

SERVICE MANUAL

NX-SW70 is composed of SW-AVS70 and NX-AVS705.

SUBWOOFEH
(SW-AVS70)

REAR SPEAKER REAR SPEAKER
(NX-AVS70) (NX-AVS70)

FRONT SPEAKER (AV-S70) ©

V/ 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 procediii-es inherent ro {he indnsiry. and more specifically YAMAHA Pmduclsc are already known and understood by the users
and have therefore not been restated.

WARNING: Failure to follow appropriare service and safety procedures when Servicing this product may result in personal inyiiry. destruction of expellsxve
components, and failure of the product to perform as specified For these reasons we advise all YAMAHA piodnct owners ihat any service
required should be performed by an anrhorized YAMAHA Rerailei- oi- rhe appoinred service represenrarive.

IMPORTANT: The presentation 0-

technical capabil

~ale of this manual ro any indivrdual or firm does nor constitute authorization certificarion or iecogntitml of any applicable
less or establish a pnnCIplerageili relationship of any form.

The data provided is believed to be accurate and applicable to the iiniiis) indicated on rhe cover. The research. eilgmeering. and service depaiimenrs of YAMAHA are
continually striving to improve YAMAHA products. Modifications are. therefore inevitable and specifications are subject to change without notice or obligation to
retrofit Should any discrepancy appear io exist. please contact the disrriburors Service Division.

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

>
.<
(n
5
E
5
m
E
~I
o

IMPORTANT: Tum rhe nnir OFF dumlg disassembly and par-r i-eplacemenr. Recheck all work before you apply power to the unit. ,

K, /
I CONTENTS

FRONT/REAR PANELS
SPECIFICATION
DISASSEMBLY PROCEDURE
TEST PROGRAM MODE

1 SW-AVS70 BLOCK DIAGRA 23
1-2 AV-S70 PRINTED CIRCUIT BOAR 24-33
SW-AVS7O PRINTED CIRCUIT BOAR . 34-35
AV-S70 SCHEMATIC DIAGRA . 36-39
SW-AVS70 SCHEMATIC DIAGRAM 40
DSP DIAG MODE 7-13 PARTS LIS 41-54
AV-S7O IC DAT 14-20 REMOTE CONTROL TRANSMITTER 55
AV-S7O BLOCK DIAGRA 21-22

Cmfi-EX7217WQ.IJV-QEimfiifiéfifib1uii
This Service Manual uses recycled paper.

fiYAMAHA

YAMAHA CORPORATION
POBoxl HamamalsuJapan