Read Sony SA-SC8 / SA-WS8 / SS-CT8 / SS-TS8 Service Manual online
SA-SC8/WS8/SS-CT8/TS8
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
SERVICE MANUAL
SUBWOOFER/SPEAKER SYSYTEM
Sony Corporation
Audio Group
Published by Sony Engineering Corporation
9-961-138-04
2004L16-1
© 2004.12
• SA-SC8 is composed of following models.
SPECIFICATIONS
Ver. 1.3 2004. 12
SA-SC8
FRONT and SURROUND speakers
SS-TS8
CENTER speaker
SS-CT8
SUBWOOFER
SA-WS8
SA-WS8
• SA-SC8 is the speaker section in
DAV-FC9/SC8.
Front/Surround
Speaker system
Bass reflex
Speaker unit
70 mm dia. cone type
× 2,
25 mm dia. balance dome
Rated impedance
4 ohms
Dimensions (approx.)
250
× 1196 × 250 mm
(w/h/d, Max size with the
stand)
250
stand)
250
× 646 × 250 mm
(w/h/d, Min size with the
stand)
stand)
Mass (approx.)
3.62 kg
Centre
Speaker system
Bass reflex
Speaker unit
70 mm dia. cone type
× 2,
25 mm dia. balance dome
Rated impedance
4 ohms
Dimensions (approx.)
379
× 125 × 85 mm
(w/h/d, with the stand)
Mass (approx.)
1.07 kg
Subwoofer
Speaker system
Active subwoofer,
Magnetically shielded
Magnetically shielded
Speaker unit
20 cm dia. cone type
Enclosure type
Advanced SAW type
Amplifier section
Continuous RMS power output
Continuous RMS power output
135 W (8 ohms,
20 Hz -20 kHz, 10% THD)
20 Hz -20 kHz, 10% THD)
Power requirements
Australian and Asian models:
220 – 240 V AC, 50/60 Hz
Taiwan model:
120 V AC, 50/60 Hz
Other models:
110 – 120 V/220 – 240 V
AC, 50/60 Hz
AC, 50/60 Hz
Power consumption
90 W, 1 W (standby mode)
Dimensions (approx.)
230 390 475
mm
(w/h/d) incl. front grille
Mass (approx.)
14.5 kg
Design and specifications are subject to change
without notice.
without notice.
EXCEPT US and Canadian models:
120 V AC, 60 Hz
US and Canadian models:
150 W (6 ohms,
US and Canadian models:
20 Hz – 20kHz, 10% THD)
SS-CT8
SS-TS8
SA-SC8/WS8/SS-CT8/TS8
2
TABLE OF CONTENTS
1. DIAGRAMS
1-1. CIRCUIT BOARDS LOCATION (SA-WS8) .............. 3
1-2. PRINTED WIRING BOARDS (SA-WS8) ................... 5
1-3. SCHEMATIC DIAGRAM (SA-WS8) .......................... 6
1-2. PRINTED WIRING BOARDS (SA-WS8) ................... 5
1-3. SCHEMATIC DIAGRAM (SA-WS8) .......................... 6
2. EXPLODED VIEWS
2-1. SS-CT8 (OVER ALL SECTION) ··································· 7
2-2. SS-TS8 (OVERALL SECTION) ···································· 8
2-3. SS-TS8 (STAND SECTION) ········································· 9
2-4. SA-WS8 (OVERALL SECTION) ································ 10
2-5. SA-WS8 (AMP SECTION) ·········································· 11
2-2. SS-TS8 (OVERALL SECTION) ···································· 8
2-3. SS-TS8 (STAND SECTION) ········································· 9
2-4. SA-WS8 (OVERALL SECTION) ································ 10
2-5. SA-WS8 (AMP SECTION) ·········································· 11
3. ELECTRICAL PARTS LIST
········································· 12
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.
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
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.
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
0.15
µ
F
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-SC8/WS8/SS-CT8/TS8
1-1. CIRCUIT BOARDS LOCATION (SA-WS8)
SECTION 1
DIAGRAMS
AUTO POWER board
MAIN board
POWER board
LED board
POWER SWITCH board
CONTROL board
SA-SC8/WS8/SS-CT8/TS8
4
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
5
: fusible resistor.
•
C
: panel designation.
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.
•
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.
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
Ref. No.
Location
D201
I-4
D202
H-4
D303
E-3
D304
E-3
D305
F-6
D306
D-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
I-7
D605
H-7
D606
G-7
(D607)
J-9
<D608>
G-8
D701
B-5
D702
C-5
D703
C-5
D704
C-5
D801
E-10
IC101
C-3
IC102
C-2
IC104
C-5
IC201
H-3
IC202
H-1
IC203
H-3
IC204
H-4
IC301
E-2
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
Q
602
G-7
Q701
B-5
Q702
C-6
Q703
A-7
Q704
A-7
Q705
A-7
• Semiconductor
Location
(
) : Except E model
<
> : E model