SA-WX700
SERVICE MANUAL
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
9-877-137-04
2004F02-1
© 2004.06
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
ACTIVE SUBWOOFER
Ver 1.3 2004.06
AUDIO POWER SPECIFICATIONS
For the U.S.A. model
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 3 ohm loads, from 20 200 Hz; rated 200 watts, minimum RMS
power, with no more than 0.8 % total harmonic distortion from 250
milliwatts to rated output.
System
Type
Active Subwoofer, magnetically shielded (closed cabinet)
Speaker units
Woofer : 25 cm dia. (10 in.), cone type x 2
Continuous RMS output
North American model
(3 ohms/100Hz, 0.8%) : 250 W
European model (DIN 3 ohms/100Hz, 0.7%) : 250 W
RMS output
Other models (3 ohms/100Hz, 10%) : 350 W
Reproduction frequency range
20 Hz - 200 Hz
High frequency cut-off frequency
50 Hz - 200 Hz
Phase selector
NORMAL, REVERSE
Inputs
Input jacks
LINE IN: input pin jack
SPEAKER IN: input terminals
Output jacks
LINE OUT: output pin jack
SPEAKER OUT: output terminals
General
Power requirements
US, Canadian models : 120 V AC, 60 Hz
AEP model : 230 - 240 V AC, 50/60 Hz
UK model : 230 - 240 V AC, 50/60 Hz
Power consumption
70 W
less than 0.5 W (Standby mode)
Dimensions
Approx. 390 x 490 x 480 mm
(15 3/8 x 19 3/8 x 19 in.) (w/h/d)
Mass
24 kg (52lb 15oz)
Supplied accessories
Audio connecting cord
(1 phono plug - 1 phono plug) (1)
Speaker cords (2)
Design and specifications are subject to change without notice.
2
SA-WX700
Specifications ........................................................................... 1
1. GENERAL ...................................................................... 3
2. DIAGRAMS
2-1. Circuit Boards Location ............................................. 3
2-2. Schematic Diagram Filter Section ........................ 4
2-3. Printed Wiring Board Filter Section ..................... 5
2-4. Schematic Diagram Power Section ...................... 6
2-5. Printed Wiring Board Power Section (Side A) ..... 7
2-6. Printed Wiring Board Power Section (Side B) ..... 8
3. EXPLODED VIEWS
3-1. Main Section ............................................................... 9
3-2. Rear Panel Section .................................................... 10
4. ELECTRICAL PARTS LIST .................................... 11
TABLE OF CONTENTS
SAFETY CHECK-OUT
(US model)
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
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-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)
Fig. A. Using an AC voltmeter to check AC leakage.
0.15µF
To Exposed Metal
Parts on Set
1.5k
AC
voltmeter
(0.75V)
Earth Ground
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 PUB-
LISHED 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.
3
3
SA-WX700
SECTION 1
GENERAL
This section is extracted from
instruction manual.
· Location of controls
SECTION 2
DIAGRAMS
For Schematic Diagrams.
Note:
· All capacitors are in
µF unless otherwise noted. pF: µµF 50 WV or
less are not indicated except for electrolytics and tantalums.
· All resistors are in
and 1/4 W or less unless otherwise specified.
· C : panel designation.
THIS NOTE IS COMMON FOR SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
· A : B+ Line.
· B : B Line.
·Voltages are dc with respect to ground under no-signal conditions.
· no mark : Power on
·Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production tolerances.
· Signal path.
F
: AUDIO
· Abbreviation
CND : Canadian model
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
2-1. CIRCUIT BOARDS LOCATION
CONTROL board
FILTER board
INPUT board
POWER board
POWER SWITCH board
LED board
CONNECTOR board
POWER
POWER indicator
LEVEL
PHASE
CUT OFF
FREQUENCY
ON/STANDBY
POWER
NORM
PHASE
CUT OFF FREQUENCY
LEVEL
OFF
POWER SAVE
ON
BOOST
REVERSE
200Hz
50Hz
MAX
MIN
AUTO
OFF
POWER
SAVE
BOOST
For printed wiring boards.
Note:
·
x
: parts mounted on the conductor side.
· X : parts extracted from the component side.
·
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component A)
the parts face are indicated.
· Abbreviation
CND : Canadian model
Ver 1.1
4
4
SA-WX700
2-2. SCHEMATIC DIAGRAM FILTER SECTION
CN302
CN203
R215
R231
CN204
IC207(1/2)
R236
R238
R237
R239
C241
C242
IC207(2/2)
IC204(2/2)
C220
C221
R230
C237
C223
C222
C224
R218
C218
R217
C215
C216
R216
C238
R211
C213
C214
R214
IC203(2/2)
R210
R213
C210
C209
R212
C208
R209
C207
IC202(1/2)
R207
C205
C206
R208
C236
R227
R226
IC201(2/2)
R205
C235
IC201(1/2)
R225
C234
R204
R224
R203
R202
R201
CN201
CN101
R221
R219
C226
R220
C225
R223
C227
R222
R116
C105
R114
C107
D105
D106
C104
R113
R111
R112
D102
D104
D101
D103
R109
C101
IC101(1/2)
C102
R105
R106
R107
R101
R102
R104
R103
C232
C230
C229
C231
R115
C106
R110
C103
C108
C109 C111
C110
R108
CN303
CN301
CN202
R206 C239
C245
C243
C244
C246
J101
VR301
VR302
SW302
SW303
IC101(2/2)
IC204(1/2)
IC203(1/2)
IC202(2/2)
IC205(2/2)
IC205(1/2)
SW301
TM101
EH 6P
EH 6P
4.7k
10k
EH 8P
KIA4558
8.2k
100k
10k
1.5k
0.056
0.47
KIA4558
KIA4558
0.22
0.1
2.2k
2200p
10
50V
0.1
10
50V
6.8k
0.22
6.8k
0.22
0.1
4.7k
10
50V
47k
10
50V
10
50V
47k
KIA4558
22k
18k
0.27
0.27
12k
0.68
4.7k
0.68
KIA4558
4.7k
0.56
0.15
68k
Jp
220k
10k
KIA4558
10k
10
50V
KIA4558
47k
10
50V
10k
2.2k
10k
6.8k
6.8k
EH5P
EH5P
22k
15k
0.01
33k
0.01
2.2k
10
50V
2.2k
2.2k
47p
100k
10
50V
1SS133
1SS133
220p
100k
1k
1k
1SS133
1SS133
1SS133
1SS133
2.2k
220p
NJM4558
220p
10k
10k
10k
4.7k
4.7k
47k
47k
0.1
10
50V
10
50V
0.1
2.2k
47p
2.2k
220p
0.1
0.1
10
C861
1000P
50V
10
50V
10k
3P
5P
8P
5.6k
100p
0.1
10 50V
10 50V
0.1
RK09L11
RK09L12
NJM4558
KIA4558
KIA4558
KIA4558
KIA358
KIA358
1
2
3
4
5
6
7
8
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
LEVEL
FREQUENCY
AMP
AMP
AMP
AMP
AMP
AMP
AMP
AMP
AMP
BUFFER
INVERTER
ON
OFF
OFF
NORM
REVERSE
AUTO
C862
1000P
Ver 1.1
5
5
SA-WX700
2-3. Printed Wiring Board FILTER SECTION
· See page 3 for Circuit Boards Location.
1
4
5
8
1
4
5
8
1
4
5
8
E
C
B
E
C
B
1
4
5
8
1
4
5
8
1
4
5
8
1
4
5
8
C242
C241
C209
C214
C232
C231
C229
C230
C226
C225
C234
C235
C206
C222
C215
C224
C249
R220
R225
R204
R202
R213
R210
C208
R231
R223
C227
C244
C501
S501
CN501
C245
C246
C243
C221
R227
Q201
Q202
C239
C236
C238
R206
C223
C237
C205
C220
C218
C216
C862
C861
R216
R238
R230
R236
R224
R221
R219
R201
R203
R222
R205
R209
R214
R215
R226
R240
C207
C210
C247
R218
R217
IC207
IC202
IC204
IC201
IC203
IC205
IC101
R239
R237
R212
R207
JW231
JW225
JW230
JW227
JW230
JW213
JW234
JW210
JW211
CN202
CN203
JW233
JW213
JW212
JW220
JW207
JW201
JW218
JW217
JW210
JW205
JW206
JW203
JW209
JW235
JW208
JW202
JW232
CN204
CN201
JW229
JW257
JW228
JW224
JW221
R208
51
1
1
1
8
6
1
8
2
1
5
D101
D102
D103
D104
R105
R101
R106
R103
R104
R102
R107
R108
JW102
JW104
JW103
JW101
CN101
C108
C110
C102
C109
C101
C105
C106
C107
R115
R113
C111
C103
R110
R109
R114
R111
R112
J101
R116
JW108
D106
D104
D105
SW302
SW303
SW301
CN303
3
1
CN301
5
1
16
CN302
VR301
VR302
5
1
5
1
6
1
1
6
1
8
8
1
CN202A
CN201A
CN201B
CN202B
CN203A
CN203B
LUG2
LUG1
FILTER BOARD
INPUT BOARD
CONTROL BOARD
CONNECTOR BOARD
POWER SWITCH BOARD
11
(11)
1-688-704-
11
(11)
1-688-701-
11
(11)
1-688-706-
11
(11)
1-688-702-
11
(11)
1-688-703-
(SIDE A)
(SIDE B)
RELAY
BOARD
RELAY
BOARD
TM101
+
+
-
-
+
+
-
-
OUT
SPEAKER
IN
L
R
PHASE
NORMAL
REVERSE
t
POWER SAVE
BOOST
AUTO
OFF
t
OFF
ON
t
POWER
LEVE
FREQUENCY
OUT
LINE
IN
B
POWER
BOARD
(Page 8)
A
POWER
BOARD
(Page 8)
2
3
4
5
6
7
8
9
A
1
B
C
D
E
F
Ref. No.
Location
D101
E-5
D102
E-5
D103
E-4
D104
E-4
D105
E-2
D106
E-2
IC101
F-2
IC201
D-4
IC202
B-2
IC203
C-1
IC204
A-3
IC205
D-2
IC207
B-1
· Semiconductor
Location
Ver 1.1