Yamaha yst sw800

Page 1

SUBWOOFER SYSTEM

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SERVICE MANUAL

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/ IMPORTANT NOTICE \\

This manual has been provided for Ihe use of authorized YAMAHA
Reiailers and their service personnel.

it has been assumed that basic service procedures inherenr to the industry.
and more specifically YAMAHA Producrs. are already known and
understood by the users, and have therefore nor been restated

WARNING: Failure to follow appropriate service and safety
procedures when servicing this product may resulr in
personal injury. destruction of expensive components, k
and failure of the producr to perform as specified. For
Illese reasons. we Advise All YAMAHA pmducl owners
that any service required should be performed by an
athorlzed YAMAHA Rerailer or Ihe appointed service
representative.

IMPORTANT: The presentation or sale of this niannal ro any individual
or firm does not constitute aurhorizntion. certifiemion
or recognition of any applicable technical
capabilities. or establish a principleragem relationship
of any form

The daia provided IS believed to be accurate and applicable to the IIiitT(s)
indicared on rhe cover The research. engineering. and service departments
of YAMAHA are connnually striving to improve YAMAHA products.
Modifications are. Therefore, inevitable and specifications are subject to

change wirhont notice or obligation to retrofit. Should any d lepancy I CONTENTS

appear ro exrst. please contact the disrrihnror's Service Division.

WARNING: Static discharges can destroy expensive components,
Discharge auy static elecrriciry your body may have
accumulated by grounding yourself to the ground buss
in the unit (heavy gauge black ones connect to this
buss)

IMPORTANT: Turn the iiuit OFF during disassernbly and part
replacement. Recheck all work before you apply power
to the unit.

. . . .7-8

\* / . . 9-12

. . . .13

@ came exclwwa. 1:77 emanates: must. ------------.16-24
an" This Service Manual uses recycled paper.

.YAMAHA

YAMAHA CORPORATION
POBox 1. Hamamaisu. Japan

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YST-SW800

YST-SW800

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 (JA25610)

Magnetically shielded type
Amplifier Output

U, C models .................................. 1kW
A, B, G models ........................... 800W/6S1
Input Impedance
|NPUT1 (SP) ................................. 4.7kQ
|NPUT2 (PJ) ................................. 12kQ
Frequency Response ........... 18 Hz to 160 Hz (-10 dB)
Power supply
U, C models ......................... AC120V, 60 Hz
A model ............................ ACZ4OV, 50 HZ
B, G models ......................... ACZ3OV, 50 Hz
Power Consumption ............................ 250W
Dimensions (W x H x D) ............ 390 x 482 x 420 mm
(15-3/8" X 19" X 16-9/16")
Weight .......................... 24 kg (52 lbs. 14 oz)
Finish
All model .............................. Black color
G model . . . . . Cherry color
Accessories .......................... Nonskid pad x 4
Specifications subject to change without notice.
U .......... USA model
C . . . Canadian model
A ..... Australian model
B ........ British model

G ..... European model