Sony SAWD-100 Service manual
SA-WD100
SERVICE MANUAL
Ver 1.0 2002. 03
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 3 ohm loads, from 26 – 200 Hz; rated 250 watts,
minimum RMS power, with no more than 0.8 % total
harmonic distortion from 250 milliwatts to rated
output.
System
Type
Active Subwoofer
Speaker unit
Woofer: 13.5 cm dia. (5 3/8 in.), cone type
Continuous RMS output
North American model (0.8%) : 200 W
European model (DIN) : 200 W
Other models (0.8%) : 200 W
Reproduction frequency range
26 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 (ELP plug 6P)
Output jacks
LINE OUT: output pin jack
SPEAKER OUT: output terminals
US Model
Canadian Model
AEP Model
UK Model
General
Power requirements
North American model : 120 V AC, 60 Hz
European model : 220 - 240 V AC, 50/60 Hz
Other models : 220 - 240 V AC, 50/60 Hz
Power consumption
North American model : 50 W
Other models : 50 W
Dimensions
Approx. 165 × 325 × 425 mm
(w/h/d) (6
Mass
10 kg (22 lb 1 oz)
Supplied accessories
Audio connecting cord
(1 phono plug – 1 phono plug) (1)
Speaker cords (1)
Design and specifications are subject to change without
notice.
1 W (Standby mode)
1
/2 × 12 7/8 × 16 3/4 in.)
E Model
9-873-640-01
2002C1600-1
© 2002.03
ACTIVE SUBWOOFER
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
SA-WD100
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 A C leakage. Check leakage as
described below.
LEAKAGE
The A C leakage from any e xposed 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.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT -540A. Follo w 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-v oltage
scale. The Simpson 250 and Sanwa SH-63Trd are e xamples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
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 IDENTIFÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
Notes on chip component replacement
•Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
To Exposed Metal
Parts on Set
AC
0.15 µF
Fig. A. Using an A C v oltmeter to check A C leakage.
1.5 kΩ
Earth Ground
Voltmeter
(0.75 V)
2
SECTION 1
d
DIAGRAMS
SA-WD100
Note on Printed Wiring Board:
• X : parts extracted from the component side.
a
•
• b : Pattern from the side which enables seeing.
• Indication of transistor
B
Q
CE
: Through hole.
These are omitted.
Note on Schematic Diagram:
• 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 Ω and 1/
specified.
• 2 : nonflammable resistor
• C : panel designation
Note:
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part
number specified.
• A : B+ Line
• B : B– Line
•Voltages are dc with respect to ground under no-signal
conditions.
•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
SP : Singapore model
4
W or less unless otherwise
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• Circuit Boards Location
POWER SWITCH board
LED board
CONTROL board
MAIN POWER board
INPUT
SELECT boar
INPUT board
AUTO POWER board
3
SA-WD100
• IC Block Diagrams
IC901 STR-F6676 (AEP, UK, SP)
COMP.1
COMP.2
IC901 STR-F6426S (US, CND)
COMP.1
LATCH O.V.P.
T.S.D.
OSC DRIVE
DS GNDVCCFB/OCP
LATCH O.V.P.
T.S.D.
START
REG.
ICONST
54321
START
REG.
COMP.2
OSC DRIVE
54321
DS GNDVCCFB/OCP
4
1-1. Printed Wiring Board – Control Section – • See page 3 for Circuit Boards Location.
LEVEL
SA-WD100
IC304
IC302
IC301
IC102
IC103
IC101
• Semiconductor Location
Ref. No. Location
D101 B-6
D102 B-5
D103 B-6
D104 B-5
D105 A-6
D106 A-6
Ref. No. Location
IC101 B-6
IC102 A-6
IC103 B-6
IC301 A-3
IC302 B-3
IC304 A-1
Ref. No. Location
Q101 D-6
Q102 D-6
Q103 D-6
Q104 D-5
Q105 D-6
Q301 A-2
Q302 A-2
55
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