Yamaha YST-SW320 Service Manual

YST-SW320
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 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
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 any 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
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. The research, 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 retrofit. 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 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.
1 0 0 7 2 0

SUBWOOFER SYSTEM

of any applicable technical
SERVICE MANUAL
SERVICE MANUAL
CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 1
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
REAR PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . 3-4
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . . 7-12
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . 14
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-22
YST-SW320