Block Diagram - Yamaha YST-RSW300 Service Manual

A B
YST-RSW300
1
I BLOCK DIAGRAM
+
L
IC11A
3
1
–
2
INPUT 1
+
2
R
–
+
L
–
3
OUTPUT
+
R
–
L/
4 MONO
INPUT 2
R
5
6
7
10
C D
VR1
SW1
PHASE VOLUME
SELECT
IC11B IC10A
NORM
7
6
IC7A
7 8 6
5 6 +
8
7
REV
5k-ohms
L.P.F. L.P.F.
6dB/oct 12dB/oct
HIGH CUT
40-140Hz
VR2
AUTO STANDBY
8
SW2
OFF
4
LOW
HIGH 6
7
+
MUSIC
C27
SENSOR
OFF
IC4
Q1
LOW
HIGH
AUTO STANDBY CIRCUIT
E F
PRE DRIVE
Q3-15
IC7B
4
+
2
–
3
+
H.P.F.
12dB/oct
LIMITER
Q10, Q12
3
TIMER
Q16, Q19
IC201
PROTECTION
Q30-33
+12
C45
-12
Q13
RY2
REGULATOR
STANDBY/ON
SW4
STATUS
D201
INDICATOR
G R
G H
+B
POWER DRIVE
Q17A, Q17C PS AMP Q22C, Q24A
RY1
PS AMP Q22A, Q24C
-B
A.N.I.C.
IC8
Q26-28
PROTECTION
POWER SUPPLY POWER
D25
TRANSFORMER
+B
+
C76
+
C77
-B
D202
POWER SUPPLY
D2
F1
IC6
+ +
C40
+ +
C46 C41
IC1
D203
R60
(U, C, K, A, B, G models)
SUB
POWER SUPPLY
D3
T1
REGULATOR
IC202
Q5, Q8
(R, L models)
I J
DRIVER
WOOFER
+
–
0.1
POWER ON/OFF
RY2 SW5
AC IN