Sony SAWX-700 Service manual

SA-WX700

SERVICE MANUAL

Ver 1.3 2004.06

SPECIFICATIONS

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

US Model

Canadian Model

AEP Model

UK Model

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.

9-877-137-04

2004F02-1
© 2004.06

ACTIVE SUBWOOFER

Sony Corporation

Home Audio Company
Published by Sony Engineering Corporation

SA-WX700

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)

TABLE OF CONTENTS

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

To Exposed Metal
Parts on Set

0.15µF

1.5kΩ

Earth Ground

AC
voltmeter
(0.75V)

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

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

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.

2

• Location of controls

d

LEVEL

CUT OFF
FREQUENCY

PHASECUT OFF FREQUENCYLEVEL

POWER SAVEONBOOST

NORM

REVERSE200Hz50HzMAXMIN AUTO OFF

PHASE

POWER
SAVE

SA-WX700

SECTION 1

GENERAL

SECTION 2

DIAGRAMS

This section is extracted from
instruction manual.

THIS NOTE IS COMMON FOR SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)

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.

OFF

ON/STANDBY

POWER

• C : panel designation.

Note:

The components identi­fied by mark 0 or dotted
line with mark 0 are criti-

• All resistors are in Ω and 1/

BOOST

POWER indicator

POWER

cal for safety.
Replace only with part
number specified.

4

W or less unless otherwise 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.

• 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 MΩ).
Voltage variations may be noted due to normal production tolerances.

• Signal path.
F : AUDIO

• Abbreviation
CND : Canadian model

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

2-1. CIRCUIT BOARDS LOCATION

CONTROL board

CONNECTOR board

FILTER board

INPUT board

POWER boar

LED board

POWER SWITCH board

33

SA-WX700

Ver 1.1

2-2. SCHEMATIC DIAGRAM –FILTER SECTION –

TM101

R101

R103

47k

4.7k

R106

R102

R104

47k

10k

4.7k

R108

D102

1SS133

10k

D104

1SS133

R105

R107

1SS133

D101

10k

10k

D103

1SS133

C101
220p

C102
220p

R109

2.2k

IC101(1/2)

NJM4558

3

2

4

220p

C103

2.2k

R110

1

C110

CN101

10

C108

0.1

50V

EH5P

CN201

EH5P

R219

R221

R201

R202

6.8k

15k

22k

6.8k

J101

C225

0.01

C226

0.01

R220

33k

4

2

3

IC205(1/2)

KIA358

AMP

R203

10k

2

3

IC201(1/2)

KIA4558
BUFFER

IC101(2/2)

NJM4558

8

5

C105

47p

R116

2.2k

R230

2.2k
C242

C237

50V

2200p

10

R206

5.6k

IC202(2/2)

KIA4558

7

AMP

C223

1

8

0.47

6

C239
100p

IC207(1/2)

KIA4558

AMP

7

C241

0.056

R239

1.5k

R237

10k

R115
C106

C207

0.68

C209

0.27

3

2

R209

4.7k

R212

12k

2.2k
47p

4

R236

8.2k

5

6

8

R238
100k

C208

0.68

C210

0.27

C246

1

7

R210

22k

IC203(1/2)

R213

18k

C109

0.1

IC207(2/2)

KIA4558

AMP

4

2

3

KIA4558

AMP

6

5

IC203(2/2)

KIA4558

0.1

8

AMP

1

C111

10

50V

7

C244

10

C213

10

50V

R211

47k

C214

10

50V

R214

47k

50V

R215

4.7k

R231

10k

C238

10

50V

C861

1000P

C245

C231

0.1

0.1

C229

10

50V

C230

50V

CN203
EH 6P

CN202

8P

C243

10

C232

0.1

10

50V

C862

1000P

CN204
EH 8P

CN302
EH 6P

CN303

3P

CN301

5P

RK09L12

FREQUENCY

VR301

RK09L11

LEVEL

OFF

ON

OFF

AUTO

REVERSE

NORM

VR302

SW302

SW303

SW301

AMP

C205

0.56

C206

0.15

R208

68k

Jp

6

5

D106

1SS133

7

8

C221

0.1

IC202(1/2)

KIA4558

AMP

3

2

4

R207

4.7k

5

6

C107

C104
220p

IC205(2/2)

KIA358

AMP

R205

10k

6

5

IC201(2/2)

KIA4558

INVERTER

50V

C224

10

50V

6

5

8

10

R222

2.2k

7

R226

10k

R218

6.8k

C222

7

8

R111

1k

R112

1k

R113
100k

IC204(1/2)

KIA4558

C216

0.1

R223

2.2k

R224

R204

2

3

2.2k

10k

C234

10

50V

4

C215

0.22

1

C227

10

50V

R216

4.7k

1

4

1

R225

47k

D105

1SS133

R114
100k

IC204(2/2)

0.22

10

R217

6.8k

C220

0.22

KIA4558

C236

C218

0.1

C235

50V

R227
220k

44

2-3. Printed Wiring Board – FILTER SECTION – • See page 3 for Circuit Boards Location.

1

2

3 4 5 6 7

SA-WX700

Ver 1.1

8

9

FILTER BOARD

A

C242

R238

8

8

5

C246

JW232

C241

JW231

IC207

R207

JW218

JW217

JW210

C243

JW203

1

4

IC203

R224

1

4

C245

JW229

C206

C227

R222

CN204

C237

C205

C208

8

5

R209

R210

R213

R223

8

5

JW209

JW202

R230

JW227

JW228

R208

C207

1

C220

1

IC202

R220

1

IC205

4

C232

C230

C231

R239

R237

8

R236

C210

R240

5

R212

C209

C244

B

C

D

C247

C239

4

JW257

E

JW230

C
B

C229

C218

R206

C
B

Q202

JW213

JW207

JW208

C221

C223

E

Q201

C236

R227

R218

R231

C226

C225

JW201

R217

R221

C215

8

5

JW224

JW221

C238

JW234

R204

R219

1

IC204

4

C224

JW212

JW213

JW233

JW206

8

R205

5

CN201

51

C222

R226

R225

JW205

JW225

IC201

JW230

C216

C235

C234

1

4

R202

6

1

CN203

C214

JW235

8

1

R216

R203

R201

JW220

JW211

CN202

R215

R214

JW210

RELAY
BOARD

(SIDE A) (SIDE B)

CN203A

C862

1

C861

CN201A

6

1

8

1

5

CN202A

RELAY
BOARD

CN203B

LUG2

1

6

CN202B

1

8

1

5

LUG1

CN201B

CONTROL BOARD

VR301

LEVE

CONNECTOR BOARD

SW301
BOOST

ON

t

OFF

CN302
16

VR302

FREQUENCY

11

1

CN301

5

SW303

POWER SAVE

OFF

t

AUTO

1

CN303

3

1-688-704-

SW302

PHASE

NORMAL

t

REVERSE

(11)

11

1-688-701-

(11)

TM101

SPEAKER

1-688-703-

D103

D104

R104

-

-

JW102

JW101

R103

R

11

(11)

+

+

R106

R108

OUT

IN

D101D102

R105

R101

1-688-702-

11

(11)

POWER SWITCH BOARD

S501

POWER

C501

CN501

1

2

1-688-706-

11

(11)

A

POWER

BOARD

(Page 8)

• Semiconductor

Location

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

C249

POWER

BOARD

D105

C105

B

R115

R116

(Page 8)

D106

4

C106

1

JW108

C101

IC101

R109

5

8

C109

C111

R110

C103

C102

C108

C110

5

JW104
JW103

CN101

R107

1

R102

E

INPUT BOARD

D104

C107

R113

R114

R111

R112

F

OUT

J101

LINE

IN

-

-

L

+

+

IC202 B-2
IC203 C-1
IC204 A-3
IC205 D-2
IC207 B-1

55

SA-WX700

Ver 1.3

2-4. SCHEMATIC DIAGRAM –POWER SECTION –

CN803

S501

POWER

D828

DBD10G

C501

0.1

250V

AC IN

C815

C836

*

CN501
VH 2P

R808

R807
C816
R806

C814

*C836
10 400V

4.7 450V

IC804

C863

MIP0253SPSCF

0.01

SWITCHING

REGULATOR

Q808

C846

0.1

KTC3198
PROTECT

*F801

6.3A/125V
4A/250V

CN802

AMP

VP

F801

CN801

B2P3VH

R852

10k

10k

4.7k

470p

10k

10

50V

0.1

R853

33k

R834

220

THP801

R832

1.2k

C845

47p
1kV

US,CND
AEP,UK

C801

0.1

250V

R801

3.3M

US,CND
AEP,UK

D813

MTZJ6.8B

R835

1.8k

L801

µPC494C

SWITCHING

REGULATOR

R833

IC802

10

C837

50V

D822

1SS133

C839

470
35V

R840

68

R851

33k

C804

1000p

250V

FG1

1SS133

R809

10k

1/4W

D827

RY801

C848

4700p

250V

C805

0.1

250V
C833

1000p

250V

C834

1000p

250V

1SS133

D831

1SS133

D823

FG3

C840

470
35V

C835

1000p

250V

D801

RBV404

R804

15k

JP801

D807

TA76431S

T804

D812

1SS133

10

C847

470
1kV

C802

1000p

250V

C803

1000p

250V

AEP, UK

R802

3.3M

L802

R836

10

C850

0.1

C842

50V

C852

0.1

R839

2.2k

C806
200V

C807

470

200V

R805

5.6k

R838

2.2k

C841

50V

10

R837

470

Q809

KTC3198

+12V REG

C843

220
25V

D825

MTZJ13B

10

D826

MTZJ13B

Q810

KTA1266

D802

1SS133

C864

0.01

D806

1SS133

R811

39k

-12V REG

L803

C808

R803

10

50V

R821

2.2k

10

10

C853

0.1

C854

0.1

C844

220
25V

D815

1SS133

Q819

KTC3199
AC DET

C0
nC

FG6

C831

4.7
50V

D832

1SS133

IC801

MIP2E7

REG.

C809

0.1

R819
100k

C838

4.7
50V

1SS133

D819

1SS133

Q817

DTC124ES

SWITCH

R820
100k

D830

D803

FMXG145

C832

0.1

THP802

R850

3.3k

Q814

KTA1267
SWITCH

C830

330
16V

Q807

KTC3199

RELAY
DRIVE

C860

0.082

D804

1SS133

R827
100k

D810

1DL42A

D836

1DL42A (N)

D811

1DL42A

Q801

KTA1266

PROTECT

R810

1k

R826

22k

D824

1SS133

D829

1SS133

R847

R845

1k

R830

R831

R828
100k

R829
100k

5

6

IC805(2/2)

KIA358P

SHIFT

R848

22k

C855

0.01

C810

4.7
50V

C811

4.7
50V

C819

100

25V

C820

100

25V

IC805(1/2)

KIA358P

3

2

4

Q812

DTC124ES

SWITCH

T802

C829

C849

12k

4.7

4.7

8

R824

6.8k

0.1

0.1

1SS133

R841

1M

7

1

R812

1k

D805

R813

1k

Q802
KTA1266
PROTECT

D818

1SS133

R849

22k

Q818

DTC124ES

SWITCH

Q813

DTC124ES

SWITCH

C851

100
35V

R817

1k

C821

10

50V

C822

10

50V

R818

1k

KTC3198

+12V REG

KTA1266

-12V REG

R814

1k

Q804

2SK3313

SWITCHING

C817

0.1

R842

820

R844

1k

Q805

MTZJ13B

MTZJ13B

Q806

Q803

2SK3313

SWITCHING

C812

100

200V

C813

100

200V

R816

100k

1DL42A

D809

1DL42A

D820

D821

D808

R815
100k

DTA124ES
LED DRIVE

DTA124ES
LED DRIVE

R822
100k

C902

100
35V

T801

C818

1000p

250V

T803

Q815

Q816

R825
220k

R823

22k

C823

100
50V

C824

100
50V

Q811

KTC3199

RELAY
DRIVE

D814

FXM22S

C828
4700

63V

C825

0.1

C826

0.1

F802

T8AL/125V
T8AL/250V

C865
820P

C866

820P

US,CND
AEP,UK

1SS133

FG2

D833

R854

1.5k
2W

FG4

FG5

RY802

D816

1SR139

L805

10µH

D817

1SR139

C858

0.01

R843

1.8k

C859

0.01

CN805
EH 3P

CN804

VH

CN401
PH 3P

SP901

SPEAKER

SP902

SPEAKER

CN806

(SCN 8P)

TO B&O OUTPUT

CN807

(SAN 8P)

TO B&O INPUT

D401

SML72420CTH8F

ON/STANDBY

ICE250A-SW

R855

82k

66