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Schematic Diagram - Yamaha A-S501 Service Manual

Integrated amplifier
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A-S501/A-S301

SCHEMATIC DIAGRAM

MAIN (1)
1 m A
1 m A
6 0 V
6 0 m W
0 . 5 m A
6 0 V
3 0 m W
Q 1 0 1
Q 1 0 9
D 1 0 1
1 S S 3 5 5 V M
Q 1 0 3
Q 1 0 5
0 . 5 m A
0 . 6 m V
0 . 1 1 V
Q 1 0 4
Q 1 0 6
D 1 0 2
1 S S 3 5 5 V M
Q 1 0 2
Q 1 1 0
32
6 m A
1 . 0 m A
Q 1 1 7
C 1 1 4
P
1 5 P / 6 3 0
R 1 1 8
s 1 6
R139
R 1 2 0
1 P 4 7 K
Q 1 1 1
K T A 1 5 0 4 S - Y , G R - R
0 . 7 V
7 m A
R 1 3 6
1 P 4 7
C 1 1 8
s 2 5
C 1 1 9
s 2 5
R 1 3 7
1 P 4 7
K T A 1 5 0 4 S - Y , G R - R
Q 1 1 2
R 1 2 1
1 P 4 7 K
R142
R 1 1 9
s 1 6
C 1 1 5
P
1 5 P / 6 3 0
Q 1 1 8
R 1 4 8
Q 1 1 9
n o _ u s e
R 1 4 4
4 . 7
R 1 4 9
1 P 4 . 7
R 1 5 6
n o _ u s e
2
1
R 1 5 9
n o _ u s e
Cut off
R 1 5 0
1 P 4 . 7
Q 1 2 0
R 1 5 1
n o _ u s e
R 1 5 2
n o _ u s e
Q 1 3 8
R 1 5 3
1 P 4 . 7
R 1 5 7
n o _ u s e
3
2
Cut off
2
1
R 1 5 8
n o _ u s e
R 1 5 4
1 P 4 . 7
R 1 4 5
4 . 7
Q 1 3 9
R 1 5 5
n o _ u s e
R 1 6 6
1 0 K
Q 1 4 0
R 1 6 7
4 7 K
Q 1 4 1
R 1 6 2
R160
0.1 mV – 10 mV
3
R 2 2 5
4 . 7 K
R 2 2 6
1
R161
4 . 7 K
0.1 mV – 10 mV
3
R 1 6 3
4 . 7 K
Q 1 2 5

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