Sony SA-VE445H / SA-WMS445 / SS-MS445 Service Manual ▷ View online
1
Ver 1.1 2003. 04
SERVICE MANUAL
US Model
Canadian Model
E Model
Australian Model
SA-VE445H
For the U.S. model
AUDIO POWER SPECIFICATIONS
For the U.S. model
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from 20 – 200 Hz;
rated 135 watts per channel minimum RMS power, with
no more than 0.8% total harmonic distortion from
250 milliwatts to rated output.
with 6 ohm loads both channels driven, from 20 – 200 Hz;
rated 135 watts per channel minimum RMS power, with
no more than 0.8% total harmonic distortion from
250 milliwatts to rated output.
SS-MS445
(front, center, and surround speakers)
Speaker system
2 way, magnetically shielded
Speaker units
Woofer: 5.7 cm (2
1/4
in.),
balanced dome type
Tweeter: 2.5 cm (1 in.),
balance dome type
Tweeter: 2.5 cm (1 in.),
balance dome type
Enclosure type
Bass reflex
Rated impedance
8 ohms
Power handling capacity
Maximum input power:
Maximum input power:
120 watts
Sensitivity level
84 dB (1 W, 1 m)
Frequency range
120 Hz – 50,000 Hz
Dimensions (w/h/d)
Approx. 88
× 172 × 133 mm
(3
1/2
× 6
7/8
× 5
1/4
in.)
including front grille
Mass
Approx. 1.3 kg (2 lb 14 oz) each
SA-WMS445
(subwoofer)
Speaker system
Active subwoofer,
magnetically shielded
magnetically shielded
Speaker unit
Woofer: 20 cm (8 in.),
cone type
cone type
Enclosure type
Advanced SAW type
Reproduction frequency range
26 Hz – 200 Hz
Continuous RMS power output
135 W (6 ohms 20 Hz – 20 kHz,
0.8% THD) (US, CND model)
120 W (6 ohms 20 Hz – 20 kHz,
0.8% THD) (AUS, SP, MY model)
0.8% THD) (US, CND model)
120 W (6 ohms 20 Hz – 20 kHz,
0.8% THD) (AUS, SP, MY model)
SPECIFICATIONS
Inputs
LINE IN (input pin jack)
SPEAKER IN (input terminals) (US, CND model)
SPEAKER IN (input terminals) (US, CND model)
Outputs
(US, CND model)
SPEAKER OUT (output terminals)
General
Power requirements
120 V AC, 60 Hz (US, CND model)
220 – 240 V AC, 50/60 Hz (AUS model)
110 – 120/220 – 240 V AC, 50/60 Hz
(SP, MY model)
220 – 240 V AC, 50/60 Hz (AUS model)
110 – 120/220 – 240 V AC, 50/60 Hz
(SP, MY model)
Power consumptions
90 W
1 W (standby mode)
1 W (standby mode)
Dimensions (w/h/d)
Approx. 230
× 392 × 464 mm
(9
1/8
× 15
1/2
× 18
3/8
in.),
including front grille (US, CND model)
Approx. 230
Approx. 230
× 392 × 447 mm
(9
1/8
× 15
1/2
× 17
5/8
in.),
including front grille (AUS, SP, MY model)
Mass
Approx. 13.2 kg (29 lb 2 oz)
Supplied accessories
Foot pads (4
× 5)
Audio connecting cord (1)
Speaker connecting cords, 10 m (32.8 ft) (2)
Speaker connecting cords, 3.5 m (11.5 ft) (3)
Speaker connecting cords, 10 m (32.8 ft) (2)
Speaker connecting cords, 3.5 m (11.5 ft) (3)
Design and specifications are subject to change without
notice.
notice.
The SA-VE445H system consists of one
unit of SA-WMS445 and five units of SS-
MS445.
unit of SA-WMS445 and five units of SS-
MS445.
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-877-090-02
2003D0400-1
© 2003. 04
MICRO SATELLITE SYSTEM
SA-VE445H/WMS445/
SS-MS445
SA-WMS445
SS-MS445
SS-MS445
(front and rear)
(center)
• Abbreviation
CND : Canadian model
AUS
AUS
: Australian model
SP
: Singapore model
MY
: Malaysia model
2
SA-VE445H/WMS445/SS-MS445
TABLE OF CONTENTS
1. DIAGRAMS
1-1. Circuit Boards Location (SA-WMS445) ............................ 3
1-2. Printed Wiring Boards (SA-WMS445) ............................... 5
1-3. Schematic Diagram (SA-WMS445) ................................... 6
1-2. Printed Wiring Boards (SA-WMS445) ............................... 5
1-3. Schematic Diagram (SA-WMS445) ................................... 6
2. EXPLODED VIEWS
2-1. Front Panel Section (SA-WMS445) .................................... 7
2-2. Rear Panel Section (SA-WMS445) ..................................... 8
2-3. Front, Center, and Surround Speakers Section
(SS-MS445) ......................................................................... 9
2-2. Rear Panel Section (SA-WMS445) ..................................... 8
2-3. Front, Center, and Surround Speakers Section
(SS-MS445) ......................................................................... 9
3. ELECTRICAL PARTS LIST
........................................ 10
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.
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
À 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.
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
Parts on Set
0.15µF
1.5k
Ω
AC
voltmeter
(0.75V)
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.
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.
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.
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)
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)
3
SA-VE445H/WMS445/SS-MS445
1-1. CIRCUIT BOARDS LOCATION (SA-WMS445)
SECTION 1
DIAGRAMS
AUTO POWER board
MAIN board
POWER board
LED board
POWER SWITCH board
CONTROL board
4
SA-VE445H/WMS445/SS-MS445
Ref. No.
Location
D101
C-3
D102
C-4
D103
B-3
D104
B-3
D201
I-4
D202
H-4
D303
E-3
D304
E-3
D305
F-6
D306
E-8
D501
C-8
D502
E-8
D503
E-8
D504
E-8
D505
E-8
D506
F-7
D507
E-7
D601
I-7
D602
I-7
D603
J-7
D604
J-7
D605
H-7
D606
H-7
D607
J-9
D608
H-8
D701
B-5
D702
C-5
D703
C-5
D704
C-5
D801
F-13
IC101
C-3
IC102
C-2
IC104
C-5
IC201
H-3
IC202
H-1
IC203
H-3
IC204
H-4
IC701
B-6
Q101
C-1
Q301
E-3
Q302
E-2
Q303
E-2
Q304
D-2
Q305
D-3
Q306
D-3
Q307
D-3
Q308
E-7
Q309
F-6
Q310
E-6
Q311
E-6
Q401
J-3
Q402
J-3
Q403
J-2
Q404
J-5
Q501
F-7
Q502
E-7
Q601
H-7
Q602
G-7
Q701
B-6
Q702
C-6
Q703
B-7
Q704
B-7
Q705
A-7
• Semiconductor
Location
Ver 1.1
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: AUDIO
• Abbreviation
CND : Canadian model.
AUS
AUS
: Australian model.
SP
: Singapore model.
MY
: Malaysia model.
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
• Abbreviation
CND : Canadian model.
AUS
AUS
: Australian model.
SP
: Singapore model.
MY
: Malaysia model.
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.