Read Sony SA-WP780 Service Manual online
SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
Published by Sony Techno Create Corporation
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
ACTIVE SUBWOOFER
9-887-104-06
2007G16-1
© 2007.07
© 2007.07
Ver. 1.5 2007.07
SPECIFICATIONS
SA-WP780
• SA-WP780 is the sub woofer section in
HT-7000DH/7100DH/DDW780/DDW880/
DDW885/DDW900/DDW990/DDW995/
HTP-36DW/78DW.
DDW885/DDW900/DDW990/DDW995/
HTP-36DW/78DW.
Photo: SILVER
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
DISTORTION:
(Models of area code US only)
With 6 ohm loads, from 28 – 200 Hz; rated 120
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 US, CND
Models of area code US, CND
150 W (6 ohms, 100 Hz,
THD 10%)
THD 10%)
Mod
Music power
Models of area code US, CND
Models of area code US, CND
Models of other area code
els of other area code 120 W (6 ohms, 100 Hz,
THD 10%
200 W
190 W
190 W
)
Input
LINE IN (input pin jacks)
Power requirements
Dimensions (w/h/d) (Approx.)
270
× 331 × 380 mm
(10 5/8
× 13 × 15 inches)
Mass (Approx.)
8.3
. kg (18 lb 5 oz)
Area code
Power requirements
US, CND
120 V AC, 60 Hz
AEP, UK, RU
230 V AC, 50/60 Hz
AUS
240 V AC, 50 Hz
SP, SP6, AR
230 – 240 V AC,
50/60 Hz
50/60 Hz
E51
120/220/240 V AC,
50/60 Hz
50/60 Hz
Design and specifications are subject to change
without notice.
without notice.
•
Abbreviation
AR
AR
: Argentine model
AUS
: Australian model
CND
: Canadian model
E51
: Chilean and Peruvian models
RU
: Russian model
SP
: Singapore model
SP6
: Singapore and Malaysia models
2
SA-WP780
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.
3
SA-WP780
SECTION 1
DIAGRAMS
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
a
: Through hole.
•
:
Pattern from the side which enables seeing.
• Indication of transistor.
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
AR
: Argentine model
AUS
: Australian model
CND
: Canadian model
E51
: Chilean and Peruvian models
RU
: Russian model
SP
: Singapore model
SP6
: Singapore and Malaysia models
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
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
B
These are omitted.
C
E
Q
INPUT CONTROL board
SWITCH board
LED board
MAIN board
POWER TRANS board
Ver. 1.3
4
SA-WP780
•
IC Block Diagrams
– MAIN Board –
IC202, IC203 NJM4565D
A
B
1
A OUTPUT
2
A -INPUT
3
A +INPUT
4
V-
7 B OUTPUT
6 B -INPUT
5 B +INPUT
8 V+
IC500 uPC1237C-A
SWITCH FOR
LATCH/AUTOMATIC
RESET
OUTPUT
OFFSET
DETECTOR
OVERLOAD
DETECTOR
AC-OFF
DETECTOR
FLIP-FLOP
OUTPUT
OFFSET
DETECTOR
OUTPUT
OFFSET
DETECTOR
1
LOADOVER
2
DETECT DC
3
RESET
4
OFF AC
6
DRIVER
RELAY
5
GND
7
OFF AC
8
VCC