Sony SA-WD200 Service Manual page 4

SA-WD200
1-2. BLOCK DIAGRAM
R+
IC101(1/2)
AMP
C+
5
CN101
L+ 7
SPEAKER IN
R-
6
C-
L-
IC101(2/2)
AC AMP
2 1
R
TM101
SPEAKER OUT
C
L
IC102(1/2)
AMP
7
5
J101 IN
LINE
OUT
IC103(1/2) IC102(2/2)
RV301
BUFFER PHASE INVERTER
LEVEL
6 7 1
2
MIN MAX
NORMAL REVERSE
S502
PHASE
Q202
VCC
CURRENT
IC201(2/2)
REGULATOR
LEVEL DETECT
IC103(2/2) IC201(1/2)
3
BUFFER AMP
D201
7
2 1 6
Q201
SWITCH 2
AUTO OFF
S501
POWER SAVE
IC301(1/2) IC301(2/2) IC302(1/2)
PHASE CONTROL HPF LPF
CUT OFF FREQ.
5
7
3 1 3 1
6
200Hz 50Hz
Q301
BOOST
Q302
SWITCH
HPF
S301
BOOST
+12V
OFF ON
Q203
Q204
1
RELAY
LED
DRIVER
DRIVER
Q205
LED
DRIVER
IC906
+12V
+12V 3 1
REG
IC907
-12V
-12V 3 2
REG
VP(+40V)
IC902
ERROR
1 2
AMP
4 4
IC304(2/2) IC304(1/2) IC302(2/2)
RV302
LPF HPF AMP POWER AMP
3 1 5 7 5 7
ICE250A-SW
50Hz 200Hz
Q701,702
PROTECT
D701
Q704
AC-OFF
DETECT
D402(1/2)
(GREEN)
POWER
ON/STANDBY
D402(2/2)
(RED)
D901
T901
D910
D911
IC901
SWITCHING
REG
D909
3 D VCC 4
2 S
FB/OCP 1
RY801
D906 D903
Q901
FEEDBACK
REG
PC901
T1
D801- 804
Q801
VCC +12V
REG
Q802
VSS -12V
EXCEPT MY, SP
REG
(SPEAKERS)
D919 D920
RY701
• Signal Path
: audio
Q703
RELAY
DRIVER
S801
POWER
S901 ON/STANDBY
AC SELECT
SWITCH
AC
110-120V
IN
220-240V
MY, SP