SA-WM500
SERVICE MANUAL
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
9-877-136-03
2004I02-1
© 2004.09
Sony Corporation
Audio Group
Published by Sony Engineering Corporation
ACTIVE SUBWOOFER
Ver 1.2 2004.09
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 6 ohm loads, from 20 200 Hz; rated 150 watts, minimum RMS
power, with no more than 0.7 % total harmonic distortion from 250
milliwatts to rated output.
System
Type
Active Subwoofer (magnetically shielded design)
Speaker unit
Woofer: 30 cm dia. (12 in.), cone type
Amplifier section
Continuous RMS output : (0.7%) 150W
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
USA and Canada models: 120 V AC, 60 Hz
AEP, UK, MY, SP models: 230 V AC, 50/60 Hz
AUS model : 240V AC, 50/60 Hz
TW model : 110 V AC, 60Hz
Power consumption
120 W
Dimensions
Approx. 360 x 425 x 412 mm
(14 1 / 4 x 16 3 / 4 x 16 1 / 4 in.) (w/h/d)
Mass
18 kg (39.6 lb 1oz)
Supplied accessories
Foot pads (4)
Audio connecting cord (1 phono 1 phono),
2 m (6 ft 6 1 / 2 in.) (1)
Speaker cords, 2.5 m (8 ft 2 1 / 2 in.) (2)
Design and specifications are subject to change without notice.
2
SA-WM500
Specifications ........................................................................... 1
1. GENERAL ...................................................................... 3
2. DIAGRAMS
2-1. Circuit Boards Location ............................................. 4
2-2. Printed Wiring Boards ................................................ 5
2-3. Schematic Diagram ..................................................... 6
3. EXPLODED VIEWS
3-1. Main Section ............................................................... 7
4. ELECTRICAL PARTS LIST ..................................... 8
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.
SA-WM500
3
SECTION 1
GENERAL
This section is extracted from
instruction manual.
· Location of controls
POWER
POWER indicator
POWER
LEVEL
MIN
MAX
CUT OFF FREQ
50Hz
PHASE
200Hz
REVERSE
NORMAL
CUT OFF FREQ
LEVEL
PHASE
AUTO
OFF
POWER SAVE
4
SA-WM500
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 PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note :
· X : parts extracted from the component side.
· x : parts extracted from the conductor side.
·
: Pattern from the side which enables seeing.
· 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
MY
: Malaysia model
SP
: Singapore model
AUS
: Australian model
TW
: Taiwan 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
MAIN board
POWER AMP board
POWER SUPPLY board
POWER SWITCH board
LED board
Ver 1.1 2003.06
5
5
SA-WM500
2-2. PRINTED WIRING BOARDS
z
See page 4 for Notes.
z
See page 4 for Circuit Boards Location.
IC502
R521
RY400
C532
JW
031
C521
JW030
JW
029
BC903
C901
D901
CN905
RY901
D302
D302
R302
R301
R303
BC301
S301
BC302
BC802
R802
JW001
C805
JW002
JW
003
JW004
C802
C801
C811
C812
R801
C806
D803
D801
D804
D802
C809
D821
D822
G1
C807
R803
C803
JW006
R804
Q801
C808
S531
S531
Q802
JW008
JW007
C810
JW009
JW010
JW011
TM501
JW012
CN803
JW
020
R406
JW016
JW017
JW018
R511
R503
R506
R510
R509
R504
C403
R502
C401
Q403
Q401
Q404
R403
R402
R501
C503
R505
JW045
C531
R405
R404
R534
R535
Q532
JW54
D532
R533
R532
Q531
D531
R531
IC503
R537
Q533
R539
R538
C402
JW032
D503
D504
D502
D501
C501
C522
R522
D506
D505
JW
028
R527
C502
R512
R508
R507
J501
CN501
R528
JW
027
R523
R520
C520
R526
R525
C523
C524
IC501
JW024
Q402
R536
R524
JW026
BC401
JW015
R400
JW013
JW014
D400
R800
D401
R401
C804
Q301
Q302
D301
BC502
JW019
C301
JW005
BC901
BC902
F11
F12
JW053
JW052
JW051
C902
D805
JW047
JW
063
C525
IC701
C709
C702
C711
R703
C703
JW
036
JW
035
C701
C708
BC701
C712
C704
R
704
R713
R705
JW
049
R708
R714
D702
D701
C706
JW
034
R707
C710
R710
D703
R711
Q701
R709
C705
E
R702
R701
C707
JW
048
R712
JW
033
R706
BC801
+
+
-
-
+
+
-
-
OUT
SPEAKER
IN
L
R
OUT
LINE
IN
POWER SAVE
AUTO
OFF
t
SP401
SPEAKER
IC601
JW
037
C604
C605
S601
RV601
RV602
R605
R606
R607
R601
R602
R604
R603
C606
C601
R609
C602
IC602
JW
038
C608
BC601
C607
R611
R612
C603
JW039
R608
R610
JW040
LEVE
PHASE
CUT OFF FREQ
NORMAL
REVERSE
t
1
4
5
8
1
4
5
8
1
4
5
8
1
4
5
8
1
4
5
8
T202
SUB
TRANSFORMER
T101
MAIN
TRANSFORMER
AC IN
1
1
4
1
4
5
1
1
5
5
1
12
1
12
MAIN BOARD
LED BOARD
POWER AMP BOARD
CONTROL BOARD
POWER SWITCH BOARD
POWER SUPPLY BOARD
1
5
E
E
E
E
E
E
E
E
E
POWER
POWER
E
E
11
(11)
1-686-989-
11
(11)
1-686-991-
11
(11)
1-686-987-
11
(11)
1-686-988-
11
(11)
1-686-992-
11
(11)
1-686-990-
1
12
2
3
4
5
6
7
8
9
10
11
12
A
1
B
C
D
E
F
G
H
I
Ref. No.
Location
z
Semiconductor
Location
D301
A-3
D302
B-2
D400
D-4
D401
B-3
D501
H-5
D502
H-5
D503
H-5
D504
H-5
D505
H-5
D506
H-5
D531
F-3
D532
G-3
D701
B-10
D702
B-10
D703
C-11
D801
D-5
D802
D-5
D803
D-5
D804
D-5
D805
B-3
D821
C-5
D822
C-5
D901
E-8
IC501
H-3
IC502
H-4
IC503
G-3
IC601
I-9
IC602
I-8
IC701
B-9
Q301
A-3
Q302
A-3
Q401
F-4
Q402
G-4
Q403
F-4
Q404
F-4
Q531
F-3
Q532
G-4
Q533
G-3
Q701
B-11
Q801
C-5
Q802
D-5