Sony SA-WD200 Service Manual ▷ View online
3
3
SA-WD200
SECTION 1
DIAGRAMS
1-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
•
a
: Through hole.
• b
: Pattern from the side which enables seeing.
•
Indication of transistor
B
These are omitted.
C
E
Q
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
2
: nonflammable resistor
•
C
: panel designation
•
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 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path
F
: AUDIO
• Abbreviation
CND : Canadian model
MY
MY
: Malaysia model
SP
: Singapore model
• Circuit Boards Location
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 por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
INPUT board
INPUT-SELECT board
AC SELECT board (MY, SP)
POWER SUPPLY
board
board
LED board
POWER-SW board
CONTROL board
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
• IC Block Diagrams
IC901
STR-F6426S (US, CND)
5
4
3
2
1
OSC
DRIVE
ICONST
START
REG.
T.S.D.
LATCH
O.V.P.
D
S
GND
VCC
FB/OCP
COMP.1
COMP.2
5
4
3
2
1
OSC
DRIVE
START
REG.
T.S.D.
LATCH
O.V.P.
D
S
GND
VCC
FB/OCP
COMP.1
COMP.2
IC901
STR-F6676 (AEP, UK, MY, SP)
4
4
SA-WD200
-12V
REG
ERROR
AMP
+12V
REG
• Signal Path
: audio
T1
D801- 804
AC
IN
D909
D911
D910
D901
D906
D903
T901
IC907
2
3
IC902
2
1
IC906
1
3
RY801
RY701
D402(1/2)
(GREEN)
D402(2/2)
(RED)
Q204
LED
DRIVER
Q205
LED
DRIVER
Q203
RELAY
DRIVER
Q703
RELAY
DRIVER
Q701,702
PROTECT
PROTECT
Q704
AC-OFF
DETECT
Q801
+12V
+12V
REG
Q901
FEEDBACK
REG
Q802
-12V
REG
J101
LINE
OUT
IN
CN101
Q302
HPF
Q201
SWITCH
Q301
BOOST
SWITCH
Q202
CURRENT
REGULATOR
+12V
VCC
VCC
VSS
1
4
2
3
S
VCC
D
IC901
SWITCHING
REG
FB/OCP
PC901
+12V
-12V
VP(+40V)
POWER
ON/STANDBY
S801
D701
D919
D920
ICE250A-SW
POWER AMP
(SPEAKERS)
SPEAKER IN
TM101
SPEAKER OUT
R+
C+
L+
R-
C-
L-
R
C
L
IC101(1/2)
AMP
IC102(1/2)
AMP
IC102(2/2)
PHASE INVERTER
IC301(1/2)
PHASE CONTROL
IC301(2/2)
HPF
IC302(1/2)
LPF
IC302(2/2)
AMP
IC304(1/2)
HPF
IC304(2/2)
LPF
IC103(1/2)
BUFFER
IC103(2/2)
BUFFER
IC201(1/2)
AMP
IC201(2/2)
LEVEL DETECT
IC101(2/2)
AC AMP
D201
5
6
7
2
1
6
7
5
7
2
1
6
7
2
1
5
6
7
1
1
3
1
3
3
5
7
5
7
3
2
1
NORMAL
REVERSE
PHASE
S502
OFF
ON
BOOST
S301
OFF
AUTO
POWER SAVE
S501
50Hz
200Hz
CUT OFF FREQ.
POWER
ON/STANDBY
50Hz
200Hz
RV302
LEVEL
RV301
220-240V
110-120V
S901
AC SELECT
SWITCH
MY, SP
EXCEPT MY, SP
MIN
MAX
1-2. BLOCK DIAGRAM
5
5
SA-WD200
1-3. PRINTED WIRING BOARD — CONTROL SECTION — •
See page 3 for Circuit Boards Location.
IC201
IC102
IC103
IC101
IC304
IC302
IC301
Ref. No.
Location
D101
B-3
D102
B-3
D103
B-2
D104
B-2
D105
A-1
D106
B-1
D201
A-4
D202
B-4
D203
B-4
D204
B-4
D205
B-3
IC101
B-2
IC102
B-1
IC103
B-2
IC201
B-4
Q201
B-4
Q202
B-3
Q203
B-4
Q204
B-4
Q205
B-4
• Semiconductor
•
Location
•
[INPUT BOARD]
Ref. No.
Location
IC301
B-9
IC302
B-8
IC304
B-6
Q301
A-8
Q302
B-8
• Semiconductor
•
Location
•
[CONTROL BOARD]
6
6
SA-WD200
1-4. SCHEMATIC DIAGRAM — CONTROL SECTION —