Sony HT-DDW870 / HT-DDW970 / SA-WMSP87 / SA-WMSP87E Service Manual ▷ View online
SERVICE MANUAL
Sony Corporation
Audio Group
Published by Sony Engineering Corporation
Published by Sony Engineering Corporation
US Model
Canadian Model
SA-WMSP87
AEP Model
UK Model
SA-WMSP87E
E Model
Australian Model
SA-WMSP87
ACTIVE SUBWOOFER
9-879-452-02
2005J16-1
© 2005.10
© 2005.10
Ver. 1.1 2005.10
SPECIFICATIONS
SA-WMSP87/WMSP87E
• SA-WMSP87/WMSP87E are the
sub woofer section in HT-5950DP/
DDW675 and HT-DDW870.
DDW675 and HT-DDW870.
Photo: SA-WMSP87
M
•
•
odels of area code CEL, CEK
(SA-WMSP87E)
Models of other area code (SA-WMSP87)
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
DISTORTION:
(Models of area code U only)
With 6 ohm loads, from 28 – 200 Hz; rated 100
watts, minimum RMS power, with no more than
0.7% total harmonic distortion from 250
milliwatts to rated output.
watts, minimum RMS power, with no more than
0.7% total harmonic distortion from 250
milliwatts to rated output.
Speaker system
Active subwoofer,
magnetically shielded
magnetically shielded
Speaker unit
200 mm (7 7/8 inches)
cone type
cone type
Enclosure type
Acoustically loaded bass
reflex
reflex
RMS output
Models of area code U, CA
Models of area code U, CA
155 W (5 ohms, 100 Hz,
THD 10%)
THD 10%)
Models of area code CEL, CEK
120 W (6 ohms, 100 Hz,
THD 10%)
THD 10%)
Models of other area code 110 W (6 ohms, 100 Hz,
THD 10%)
Input
LINE IN (input pin jacks)
Power requirements
Power consumption
100 W
Dimensions (w/h/d) (Approx.)
270
×
325
×
398 mm
(10 5/8
×
12 3/4
×
15 5/
×
8
inches)
Mass (Approx.)
9.0 kg (19 lb 14 oz)
Area code
Power requirements
U, CA
120 V AC, 60 Hz
MX
127 V AC, 60 Hz
CEL, CEK
230 V AC, 50/60 Hz
AU
240 V AC, 50 Hz
SP
220 – 230 V AC,
50/60 Hz
50/60 Hz
E51
120/220/240 V AC,
50/60 Hz
50/60 Hz
•
Abbreviation
AU
AU
: Australian model
CA
: Canadian model
CEK
: UK model
CEL
: AEP model
E51
: Chilean and Peruvian model
MX
: Mexican model
SP
: Singapore model
U
: US model
2
SA-WMSP87/WMSP87E
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 2 V AC range are suitable. (See
Fig. A)
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 2 V AC range are suitable. (See
Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
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 PUBLISHED BY SONY.
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 COM- POSANTS
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 COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
MODEL IDENTIFICATION
– Rear Side –
INPUT
SUBWOOFER
SATTELLITE SPEAKER
CENTER SPEAKER
Part No.
• Abbreviation
AUS
: Australian model
CND
: Canadian model
E51
: Chilean and Peruvian model
MX
: Mexican model
SP
: Singapore model
Model
Part No.
US, CND models
2-549-538-0
[]
SP model
2-549-540-0
[]
AUS model
2-549-543-0
[]
E51 model
2-549-545-0
[]
MX model
2-549-549-0
[]
AEP, UK models
2-589-803-0
[]
3
3
SA-WMSP87/WMSP87E
SA-WMSP87/WMSP87E
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
:
Pattern from the side which enables seeing.
Note on Schematic Diagrams:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and dc with respect to ground under no-signal
conditions.
no mark : Power on
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.
tolerances.
• Signal path.
F
: AUDIO
• Abbreviation
CND
: Canadian model
E51
: Chilean and Peruvian model
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND 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.)
Note:
The components identi-
fied by mark
fied by mark
0
or dot-
ted line with mark
0
are
critical for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés
par une marque
par une marque
0
sont cri-
tiques 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.
• Circuit Boards Location
CONTROL board (WMSP87)
INPUT board
MAIN board
POWER TRANS board
SWITCH board (WMSP87)
CONTROL board
(WMSP87E)
(WMSP87E)
SWITCH board
(WMSP87E)
(WMSP87E)
LED board
(WMSP87E)
(WMSP87E)
(WMSP87E)
(WMSP87)
SECTION 1
DIAGRAMS
MEMO
4
4
SA-WMSP87/WMSP87E
SA-WMSP87/WMSP87E
1-1. PRINTED WIRING BOARD — WMSP87 —
•
:Uses unleaded solder.
•
See page 3 for Circuit Boards Location.
POWER
POWER
2
1
4
1
POWER
RV801
1
2
1
1
6
2
EXCEPT
E51
EXCEPT
E51
FH902
FH952
F902
E51
VOLTAGE
SELECTOR
S2
240V
220V
120V
F901
AC IN
(CHASSIS)
E
1
13
1
4
8
5
1
4
8
5
E
E
E
E
1
2
1
3
(CHASSIS)
2
1
SP1
(WOOFER)
+
–
INPUT
IC301
IC202
IC203
T1
POWER
TRANSFORMER
1
A
B
C
D
E
F
G
H
2
3
4
5
6
7
8
9
10
11
12
13
• Semiconductor
Location
Ref. No.
Location
D205
C-11
D206
C-11
D301
E-8
D302
E-8
D304
C-10
D401
C-7
D402
C-8
D403
C-8
D501
B-9
D502
E-8
D602
B-10
D901
C-2
IC202
C-11
IC203
C-12
IC301
E-10
Q501
B-9
Q502
C-10
Q503
B-10
Q504
B-10
Q505
E-8
