Yamaha yst sw320

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SUBWOOFER SYSTEM

YST-SW32 O

SERV CE MANUAL

. IMPORTANT NOTICE \

This manual has been provided for I116 use of aulhonzed YAMAHA

Retailers and tlteir service personnel. 7 W @
It has been assumed that basic service procedttres inherent to tlte industry. m -

and more specifically YAMAHA Products. are already ltnotyn and

understood by the users. and have therefore ttot been restated. (9(0)

WARNING: Failure [0 follow appropriate service and safety
procedur when servicing this prodttct may result in
personal injury, destruction of expensive components.
and failure of the product to perfornt as specified. For
Illese reasons, we advise all YAMAHA producl owners
that arty service required should be performed by art
authorized YAMAHA Retailer or Ille appointed service
representative.

IMPORTANT: The presentation or sale of Ihls manual to any indivtdual
or firm does not cotlslltuie authorizallon. certification
or recognition of any applicable technical
capabilities. or establish a pmlclpleeagem relationship
of any form.

The data provided is believed to be accurate and applicable to tlte unl[(§)

indicated on the cover. Tlte research, engineering, and service departments

of YAMAHA are continttally striving to irttprove YAMAHA products.

Modificallons are. therefore, inevitable and spectficailnns are subject In

change tytthout notice or obltgation to retrofit. Should arty discrepancy t t t t

appear to exist. please contact the distributor's Service Division.

WARNING: Static discharges can destroy expensive components,
Discharge any static electrtctty your body may have
accutnulated by grounding yourself to tlte grottnd bttss
in the unit (heavy gauge black Wires connect to this
buss)

IMPORTANT: Tttrn the ttntt OFF dttrtng dis ~sernbly and part
replacement. Recheclt all work before you apply power
to the unit

I CONTENTS

PRINTED CIRCUIT BOAR
BLOCK DIAGRA

SCHEMATICDIAGRA
p PARTSLIS .
@ :037 8x7217JH1. 1:77 Ewfiiméfiflfi Unfit.
This Service Manual uses recycled paper.

YAMAHA CORPORATION
POBox i. Hamamaisu. Japan

. .15-22

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YST-SW320

YST-SW320

I TO SERVICE PERSONNEL

. . . AC LEAKAGE
1. Critical Components Information WALL EQUIPMENT TESTER OR
Components having special characteristics are marked A OUTLET UNDER TEST EQUIVALENT
and must be replaced with parts having specifications equal
to those originally installed. ® :3-
2. Leakage Current Measurement (For 120V Models Only) ,
When service has been completed, it is imperative to verify :
that all exposed conductive surfaces are properly insulated INSULATING
from supply circuits. TABLE
0 Meter impedance should be equivalent to 1500 ohm shunted o Leakage current must not exceed 0.5mA.
by 0.15pF.

0 Be sure to test for leakage with the AC plug in both
polarities.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or
plastic (where applicable) components may also contain traces of chemicals found by the California Health and
Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR
ANY REASON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes
or expose eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands
before handling food.

I SPECIFICATIONS

Type ......... Advanced Yamaha Active Servo Technology
Driver ........... 25 cm (9-13/16") cone woofer (JA25600)
Magnetically shielded type
Amplifier Output ............................ 250W/5s1
Frequency Response ....... 20 Hz to 160 Hz (-24 dB/oct.)
Power Supply
U, C models ......................... AC120V, 60 Hz
A model ............................ ACZ4OV, 50 HZ
B, G models ......................... ACZ3OV, 50 Hz
R, T models ............ AC110/120/220/240V, 50/60 HZ
Power Consumption ............................. 60W
Dimensions (W x H x D) ............ 340 x 432 x 370 mm
(13-3/8" x 17" x 14-9/16")
Weight ........................... 17 kg (37 lbs. 7 oz)
Finish
All model .............................. Black color
R, T, G models ........................ Cherry color
Accessories .......................... Nonskid pad x 4

Specifications subject in change without notice.

.......... USA made!
. Canadian model
Australian model
. . . British model
European model
. General model
......... China model

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