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SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
Ã- LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
To Exposed Metal
Parts on Set
0.15
µF
1.5k -„¦ AC
voltmeter
(0.75V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check 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 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. 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 2V AC range are suitable. (See Fig. A)
SA-WFT3 (subwoofer)Speaker system Active subwoofer,
magnetically shielded
Speaker units Woofer: 15 cm (× 2), cone
type
Enclosure type Acoustically Loaded
Bass reflex
Reproduction frequency range
28 Hz -“ 200 Hz
Continuous RMS power output
150 W (6 ohms 100 Hz,
10% THD)
Input
LINE IN (input pin jack)
General
Power requirements
US, CND model: 120 V AC, 60 Hz
AEP, UK model: 230 V AC, 50/60 Hz
SP, MY model: 220 -“ 230 V AC, 50/60 Hz
Power consumptions 80 W
0.3 W (standby mode)
Dimensions (w/h/d) Approx. 182 × 477 × 353 mm
Mass Approx. 12 kg
Supplied accessories
SA-FT3H:
Speaker cord (3.5 m) (3)
Speaker cord (10 m) (2)
Table top stand cover (4)
Table top stand base (4)
Center speaker stand base (1)
Center speaker stand adjuster (1)
Cushion (20)
Rear pad (10)
Screw (M5) (5)
Screw (M4) (2)
Screw (M3.5) (16)
SS-FRF3H:Speaker cord (10 m) (1)
Table top stand base (1)
Table top stand cover (1)
Screw (M5) (1)
Screw (M3.5) (4)
Cushion (4)
Rear pad (2)
Design and specifications are subject to change without notice.
-Abbreviation
CND : Canadian model
SP : Singapore model
MY : Malaysia model
SA-FT3H/WFT3/SS-CNF3H/FRF3H
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SA-FT3H/WFT3/SS-CNF3H/FRF3H
TABLE OF CONTENTS
1. DISASSEMBLY
1-1. Rear Panel Section .............................................................. 4
1-2. Main Board, Power AMP Board ......................................... 5
2. DIAGRAMS
2-1. Block Diagram .................................................................... 7
2-2. Printed Wiring Boards -“ Main Section -“ ............................ 8
2-3. Printed Wiring Boards -“ Control Section -“ ......................... 9
2-4. Schematic Diagram -“ Main Section -“ ............................... 10
3. EXPLODED VIEWS
3-1. Front/Surround Speaker Section (SS-FRF3H) .................. 11
3-2. Center Speaker Section (SS-CNF3H) ............................... 12
3-3. Subwoofer Section (1) (SA-WFT3) .................................. 13
3-4. Subwoofer Section (2) (SA-WFT3) .................................. 14
4. ELECTRICAL PARTS LIST ......................................... 15
