Printed Circuit Board - Yamaha YST-SW030 Service Manual

A B
I PRINTED CIRCUIT BOARD (Foil side)
1
MAN (3) P. C. B.
(Lead Type Device)
2
-15
+15
-V
E
MAIN
3
4
WH BE
5
6
MAN (4) P. C. B.
(Lead Type Device)
• Semiconductor Location
Ref. no. Location Ref. no. Location Ref. no. Location Ref. no. Location
D1 I2 D19 G3 IC2 G3 Q6 F3
D2 H3 D20 F2 IC3 H3 Q7 E2
D3 I3 D21 F2 IC4 B3 Q8 F3
D4 E2 D22 E3 IC5 B2 Q9 H3
7
D5 F2 D23 F3 Q1 F2 Q10 I3
D6 G2 D24 J3 Q2 F2
D7 E2 IC1 G1 Q5 E3
C D
YST-SW030
DRIVER
VOLUME
INPUT
Circuit No. U, C, A, B, G, J L, R, T, K
F2 X O
CB4, 5 X O
SW2 X O
W7 X O
W8 X O
W9 X O
W10 X O
MAN (2) P. C. B.
(Lead Type Device)
WH
WH
POWER
BE
BE
L, R, T, K models only
MAN (9) P. C. B.
(Lead Type Device)
E F
MAN (1) P. C. B.
(Lead Type Device)
WH
RE
U, C, A, B, G, J models only
MAN (7) P. C. B.
(Lead Type Device)
U, C, A, B, G, J models
L, R, T, K models
RE BE YE
BR
VOLTAGE
SELECTOR
G H
BE
Power
Transformer
WH
WH
YE
RE
Power
Transformer
BR
BE
L, R, T, K models only
MAN (10) P. C. B.
BE
(Lead Type Device)
I J
YST-SW030/YST-SW010
RE
BL
RE
MAN (6) P. C. B.
(Lead Type Device)
RE
BL
RE
11