Sony SA-WX900 Service Manual ▷ View online
SA-WX900
SERVICE MANUAL
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
9-961-097-04
2008C02-1
© 2008.03
Sony Corporation
Audio Business Group
Published by Sony Techno Create Corporation
ACTIVE SUBWOOFER
Ver. 1.3 2008.03
AUDIO POWER SPECIFICATIONS
For the U.S.A. model
For the U.S.A. model
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 4 ohm loads, from 20 – 200 Hz; rated 800 watts, minimum RMS
power, with no more than 0.8 % total harmonic distortion from 250
milliwatts to rated output.
DISTORTION:
With 4 ohm loads, from 20 – 200 Hz; rated 800 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 : 30 cm dia. (12 in.), cone type x 2
Continuous RMS output
North American model
(4 ohms/100Hz, 0.8%) : 1,000 W
European model (DIN 4 ohms/100Hz, 0.8%) : 1,000 W
Reproduction frequency range
20 Hz – 200 Hz
High frequency cut-off frequency
50 Hz – 200 Hz
Phase selector
NORMAL, REVERSE
Mode selector
MOVIE, MUSIC
BASS-BOOST OFF, 1, 2
Active Subwoofer, magnetically shielded (closed cabinet)
Speaker units
Woofer : 30 cm dia. (12 in.), cone type x 2
Continuous RMS output
North American model
(4 ohms/100Hz, 0.8%) : 1,000 W
European model (DIN 4 ohms/100Hz, 0.8%) : 1,000 W
Reproduction frequency range
20 Hz – 200 Hz
High frequency cut-off frequency
50 Hz – 200 Hz
Phase selector
NORMAL, REVERSE
Mode selector
MOVIE, MUSIC
BASS-BOOST OFF, 1, 2
Inputs
Input jacks
LINE IN: input pin jack
SPEAKER IN: input terminals
Output jacks
LINE OUT: output pin jack
SPEAKER OUT: output terminals
LINE IN: input pin jack
SPEAKER IN: input terminals
Output jacks
LINE OUT: output pin jack
SPEAKER OUT: output terminals
General
Power requirements
North American model : 120 V AC, 60 Hz
European model : 220 – 240 V AC, 50 Hz
Other models : 220 – 240 V AC, 50 Hz
Power consumption
220 W
less than 0.5 W (Standby mode)
North American model : 120 V AC, 60 Hz
European model : 220 – 240 V AC, 50 Hz
Other models : 220 – 240 V AC, 50 Hz
Power consumption
220 W
less than 0.5 W (Standby mode)
Dimensions
Approx. 440 x 550 x 620 mm
(17
Approx. 440 x 550 x 620 mm
(17
3
/
8
x 21
7
/
8
x 24
1
/
2
in.) (w/h/d)
Mass
48 kg (105lb 14oz)
Supplied accessories
Audio connecting cord
(1 phono plug – 1 phono plug) (1)
Speaker cords (2)
Spike
Design and specifications are subject to change without notice.
Supplied accessories
Audio connecting cord
(1 phono plug – 1 phono plug) (1)
Speaker cords (2)
Spike
Design and specifications are subject to change without notice.
2
SA-WX900
Specifications ........................................................................... 1
1. GENERAL
...................................................................... 3
2. DIAGRAMS
2-1. Circuit Boards Location ............................................. 4
2-2. Schematic Diagram – Filter Section – ........................ 5
2-3. Printed Wiring Board – Filter Section – ..................... 6
2-4. Schematic Diagram – Power Section – ...................... 7
2-5. Printed Wiring Board – Power Section – .................... 8
2-2. Schematic Diagram – Filter Section – ........................ 5
2-3. Printed Wiring Board – Filter Section – ..................... 6
2-4. Schematic Diagram – Power Section – ...................... 7
2-5. Printed Wiring Board – Power Section – .................... 8
3. EXPLODED VIEWS
3-1. Amp Section ............................................................... 9
3-2. Cabinet Section ......................................................... 10
3-2. Cabinet Section ......................................................... 10
4. ELECTRICAL PARTS LIST
.................................... 11
TABLE OF CONTENTS
SAFETY CHECK-OUT
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.
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.
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.
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)
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.
0.15
µ
F
To Exposed Metal
Parts on Set
Parts on Set
1.5k
Ω
AC
voltmeter
(0.75V)
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.
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.
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
SA-WX900
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
• Location of controls
LEVEL
PHASE
CUT OFF
FREQUENCY
FREQUENCY
NORM
PHASE
MODE
CUT OFF FREQUENCY
LEVEL
OFF
POWER SAVE
BOOST
REVERSE
200Hz
50Hz
MAX
MIN
AUTO
MUSIC
MOVIE
OFF
1
2
POWER
SAVE
SAVE
BOOST
MODE
POWER
POWER indicator
ON/STANDBY
POWER
4
SA-WX900
SECTION 2
DIAGRAMS
For Schematic Diagrams.
Note:
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F 50 WV or
less are not indicated except for electrolytics and tantalums.
• All resistors are in
Ω
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.)
(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
• no mark : Power on
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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
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 portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
2-1. CIRCUIT BOARDS LOCATION
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
• Abbreviation
CND : Canadian model
FILTER board
CONTROL board
SWITCH board
INPUT board
PROTECT board
AUTO POWER board
POWER SW board
ICE250-SW
SWITCHING
REGULATOR
REGULATOR
LINE FILTER board