Yamaha YST-RSW300 Service Manual page 12

A B
YST-RSW300
1
MAIN (2) P.C.B.
E
+1V
VCC
2
3
4
AC IN
MAIN (6) P.C.B. MAIN (7) P.C.B.
R, L models R, L models
5
MAIN (2)
(W5A1, W5A2, W5A3)
RE
BL
RE
6
BE
BL
BE
MAIN (10)
POWER
(W6A1, W6A2, W6A3)
TRANSFORMER
7
12
C D E
MAIN (4) P.C.B.
R, L models
E1
LEDG
LEDR
PWS
VCC
40Hz 140Hz
HIGH CUT
MAIN (9) P.C.B.
R, L models
CB6 CB5
BE
W14A
BE
W16A
YE
W10A
GR
BR
W15A
YE
BL
W7A
W13A
BE
RE
WH
VOLTAGE
SELECTOR
F G
MAIN (10)
(CB9)
CB4
0 10
VOLUME
MAIN (6) P.C.B.
U, C, K, A, B, G models
MAIN (2)
(W5A1,W5A2, W5A3)
GR
RE
RE
BL
RE
BR
BE
BL
BL Voltage Select
230-240V 1-2, 5-6
220V 2-3, 6-7
BE
110V 3-4, 7-8
20V 4-5, 8-9
POWER
MAIN (10)
TRANSFORMER
(W6A1,W6A2, W6A3)
H I
MAIN (5) P.C.B.
POWER
•
ON/OFF
W12B W11B
OR GY
MAIN (11) P.C.B. MAIN (8) P.C.B.
U, C, K, A, B, G models
BE
VCC
PWS
LEDR
LEDG
E1
WH
J
Semiconductor Location
Ref no. Location Ref no. Location
D1 E3 IC202 B2
D3 C2 Q2 E2
D7 C2 Q5 C2
D9 C2 Q8 C2
D201 I6 Q13 B2
IC7 F2
STANDBY/ON
STATUS INDICATOR
G R