Sony sa w 10 service manual

Page 1

' SA-W10

SERVICE MANUAL , a

U8 Model
Canadian Model
AEP Model

UK Model

E Model
Australian Model

SPECIFICATIONS

For the US model

Audio power specifications
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:

With 8 ohm loads, from 20 - 20,000 Hz; rated 23 watts
per channel minimum RMS power, with no more than
08 % total harmonic distortion from 250 milliwalts to

rated output.

System

Type Active Super Woofer (magnetically shielded
design)

Speaker unit Woofer: 16 cm (6 5/16 inches), cone type

Practical maximum output

US, Canadian model: 23W
AER UK. German model: 28W (Sohms, DIN)
50W (MUSIC)

E, Australian. Saudi Arabia,
Hong Kong» Singapore modelz35W

Reproduction frequency range
28 Hz - 200 Hz

High frequency cut-off frequency
50 Hz - 200 Hz

Phase switch NORMAL, REVERSE

Inputs

Input jacks INPUT 1: 'Input pin jack
INPUT 2: Input terminals

General

Power requirements

Where purchased Power requirements

US, Canadian model 120 V AC, 60 Hz

AEP, UK, German model 220 ~ 230 V AC, 50/60 Hz

E, Australian, Saudi Arabia 110 ~ 120/220 - 240 V AC,
Hong Kong Singapore model adjustable, 50/ 60 Hz

Power consumption
30 W

Dimensions Approx. 205 x 415 x 365 mm (w/h/d)
(8 Via x16 5/1e x14 3/8 inches)

Mass 8 kgt17lb10 oz)

Supplied accessories
Audio connecting cord
(1 phone plug - 1 phono plug) (1)
Speaker cord (2)

Design and specifications are subject to change without

ACTIVE SUPER woorrn
S O NY®

Page 2

TABLE OF CONTENTS

2. DIAGRAMS
2~L Schematic Diagram... 5
2-2 Printed Wiring Boards . 7
3. EXPLODED VIEWS ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 10
4. ELECTRICAL PARTS LIST ............................ 12
MODEL IDENTIFICATION

SONY MODEL NO. SA-W10

ACTIVE SUPER WOOFER
WWW/A

SERIAL NO.
MADE IN MALAYSIA

US, Canadian model: 120V 60Hz 30W

AEP, UK, German model: 220-230V 50/60Hz 30W
E, Australian, Saudi Arabia, Hong Kong,

Singapore model: 110-120/220-240V 50/60Hz 30W

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.

SAFETY CHECK-OUT

After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, metallized knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.

LEAKAGE TEST
The AC leakage from any exposed metal part to earth

ground and from all exposed metal parts to any exposed metal

part having a return to chassis, must not exceed 0.5 mA (500

microampers), Leakage current can be measured by any one

of three methods.

1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540Ai Follow the manufacturers instructions
to use these instruments.

2. A battery-operated AC milliammeter The Data Precision
245 digital multimeter is suitable for this job

3 Measuring the voltage drop across a resistor by means of
a VOM or battery-operated AC voltmeter. The limit"
indication is 0.75 V, so analog meters must have an accurate
low-voltage scale The Simpson 250 and Sanwa SH-63Trd
are examples of a passive VOM that is suitable. Nearly all
battery operated digital multimeters that have a 2 V AC
range are suitable. (See Fig. A)

To Exposed Metal
Paris on Set

AC
Vo/tmeter
(0.75 V)

0.15%

T__

_-_= Earth Ground

Fig. A, Using an AC voltmeter to check AC leakage

ATTENTION Au COMPOSANT AYANT RAPPORT
A LA SECURITEI

LES COMPOSANTS IDENTIFIES PAR UNE MARGUE a
SUR LES DIAGRAMMES SCREMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIECES soNv DONT LES
NUMERos SONT DONNIES DANS CE MANUEL ou DANS
LES SUPPLEMENTS PUBLIES PAR SONY.