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Yamaha A-S501 Service Manual page 64

Integrated amplifier
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Table of Contents
A
B
C
A-S501/A-S301
1
OPERATION 1/2
F U N C _ L E D
O P E ( 1 )
OPERATION (1)
2
n o _ u s e
n o _ u s e
U S B _ L E D
R 8 3 4
D 8 2 1
S E L 6 9 1 0 A - C D
1 K
LINE3
L I N E 3 _ L E D
R 8 3 3
D 8 2 0
S E L 6 9 1 0 A - C D
LINE2
1 K
L I N E 2 _ L E D
R 8 6 7
3
D 8 1 5
S E L 6 9 1 0 A - C D
LINE1
1 K
L I N E 1 _ L E D
R 8 6 6
D 8 1 3
S E L 6 9 1 0 A - C D
OPTICAL
O P T I C A L _ L E D
1 K
R 8 6 5
D 8 1 2
INPUT
S E L 6 9 1 0 A - C D
COAXIAL
1 K
C O A X I A L _ L E D
3 5
indicators
R 8 6 4
4
D 8 1 1
S E L 6 9 1 0 A - C D
CD
C D _ L E D
1 K
1 93
0 09
R 8 6 3
D 8 1 0
S E L 6 9 1 0 A - C D
TUNER
1 K
4 9
3 5
T U N E R _ L E D
R 8 6 2
D 8 0 9
S E L 6 9 1 0 A - C D
PHONO
1 K
3 5
P H O N O _ L E D
5
R 8 6 1
D 8 0 6
S E L 6 9 1 0 A - C D
PURE DIRECT
1 K
P U R E _ D I R _ L E D
R 8 2 3
D 8 0 5
n o _ u s e
n o _ u s e
C D _ D I R _ L E D
R 8 2 0
D 8 1 9
6
n o _ u s e
n o _ u s e
D S D X 2 _ L E D
R 8 2 4
D 8 1 8
n o _ u s e
n o _ u s e
D S D X 1 _ L E D
R 8 2 1
D 8 1 7
n o _ u s e
n o _ u s e
P C M X 8 _ L E D
7
R 8 7 9
D 8 2 5
n o _ u s e
n o _ u s e
P C M X 4 _ L E D
R 8 1 9
D 8 1 6
n o _ u s e
R 8 8 2
n o _ u s e
P C M X 2 _ L E D
n o _ u s e
R 8 1 6
D 8 0 2
R 8 8 1
n o _ u s e
n o _ u s e
n o _ u s e
n o _ u s e
P C M X 1 _ L E D
8
R 8 0 2
D 8 0 1
9
N O T I C E
( m o d e l )
R E S I S T O R
J
J A P A N
R E M A R K S
P A R T S
N A M E
U
U . S . A
N O M A R K
C A R B O N
F I L M R E S I S T O R
( P = 5 )
C
C A N A D A
C A R B O N
F I L M R E S I S T O R
( P = 1 0 )
R
G E N E R A L
M E T A L
O X I D E F I L M R E S I S T O R
T
C H I N A
M E T A L
F I L M
R E S I S T O R
K
K O R E A
M E T A L
P L A T E R E S I S T O R
A
A U S T R A L I A
F I R E
P R O O F C A R B O N
F I L M R E S I S T O R
B
B R I T I S H
C E M E N T
M O L D E D R E S I S T O R
G
S T A N D A R D
S E M I
V A R I A B L E
R E S I S T O R
10
L
S I N G A P O R E
C H I P R E S I S T O R
E
S O U T H E U R O P E
V
T A I W A N
F
R U S S I A N
P
L A T I N A M E R I C A
S
B R A Z I L
H
T H A I
64
D
E
F
+ 5 S
+ 5 M
5 2 0 4 4
4 97
+ 5 M
M P L E D
R E M
K E Y 1
M P S W
R 8 3 9
L _ D I N
4 96
4 7 0
R 8 4 0
4 96
L _ C L K
4 7 0
R 8 4 1
4 96
L _ C S
4 7 0
4 96
4 96
L _ R E S
R 8 4 2 1 0 0
I S A
I S B
K E Y 0
I C 8 0 1
+ 5 S
L C 7 0 9 0 0 4 A M J - A H
0 00
M G
4 96
C B 8 0 1
4 96
4 96
+ 5 S
C 8 0 6
R 8 7 7
n o _ u s e
n o _ u s e
R 8 3 7
4 96
D 8 0 7
1 0 K
R 8 3 0
n o _ u s e
1 0 K
D 8 0 8
4 94
n o _ u s e
INPUT
C O M B
A
S W 8 0 2
I N P U T S e l e c t o r
X R E B 1 2 5 0 5 P V B 2 5 F
+ 5 M
F G 2
R 8 0 3
K E Y 0
10 0
n o _ u s e
4 96
R 8 0 4
4 96
1 0 K
PURE DIRECT
C D D I R E C T
P U R E D I R E C T
+ 5 S
M G
D
D
S
D
D
G
n o _ u s e
C B 8 0 8
+ 5 M
* M P L E D
R E M
+ 5 S
K E Y 1
M P S W
D
D
S
Q 8 0 2
n o _ u s e
D
D
G
Q 8 0 4
R 8 7 8
n o _ u s e
M G
F G 1
C A P A C I T O R
R E M A R K S
P A R T S
N A M E
N O
M A R K
E L E C T R O L Y T I C
C A P A C I T O R
T A N T A L U M
C A P A C I T O R
N O
M A R K
C E R A M I C
C A P A C I T O R
C E R A M I C
T U B U L A R
C A P A C I T O R
P O L Y E S T E R F I L M
C A P A C I T O R
P O L Y S T Y R E N E
F I L M
C A P A C I T O R
M I C A
C A P A C I T O R
P
P O L Y P R O P Y L E N E
F I L M
C A P A C I T O R
S E M I C O N D U C T I V E C E R A M I C C A P A C I T O R
P O L Y P H E N Y L E N E
S U L F I D E
F I L M
S
C A P A C I T O R
G
H
A-S501
A-S301
1 4
1 3
1 2
1 1
1 0
9
Page 62
K2
8
to FUNCTION (1)_CB505
7
6
5
4 96
4
4 97
3
2
1
T C
O P E ( 3 )
OPERATION (3)
9 0 1 -
+ 5 M
BASS
TREBLE BALANCE
B A S S
T R E B L E
4 96
2 42
2
3
4
2 407
2
3
4
W 8 0 3
V R 9 5 5
V R 9 5 4
1 0 K B
1 0 K B
+ 5 M
1
1
1
B A S S
2
Page 62
J8
T R E B L E
3
to FUNCTION (1)_CB508
B A L A N C E
4
L O U D N E S S
5
M G
6
P _ L E D
S P A / B
+ 5 M
O P E ( 4 )
OPERATION (4)
+ 5 S
W 8 0 5 A
W 8 0 5 B
L E D
L E D
+ 5 M
+ 5 M
* M P L E D
* M P L E D
R E M
R E M
4 9
M G
M G
SPEAKERS
S R B V 1 4 1 4 0 0
1
1 0
M G
8
9
5
4
3
2
S W 8 0 4
W 8 0 1
+ 5 M
1
1
R 8 0 9
R 8 1 1
R 8 1 3
R 8 1 5
* M P L E D
2
2
4 96
1 . 5 K
1 . 5 K
1 . 5 K
1 . 5 K
R E M
3
3
A + B
B
A
O F F
+ 5 S
(A) 1 22
2 45 (A)
3 684 (A)
4
4
S P A / B
(OFF) 1 24
2 47 (OFF)
3 72 (OFF)
M G
K E Y 1
5
5
n o _ u s e
M P S W
C 8 0 3
R 8 0 6
6
6
OPERATION (7)
n o _ u s e
7
7
D 8 2 3
M G
M G
n o _ u s e
D 8 2 4
P _ S W
n o _ u s e
S e l f - l o c k
M G
F G
Z O N E P O W E R
O N / O F F
W 8 0 6 A
W 8 0 6 B
+ 5 M
+ 5 M
M P S W
M P S W
L E D
L E D
J 8 2 1
O P E ( 6 )
OPERATION (6)
IC852 : BH6578FVM
Silicon monolithic integrated circuit
INFWD
INREV LDCONT
8
7
F
R
Control
Logic
+
-
Vcc
PAW CMOS
H-Bridge
1
2
OUT +
Vcc
I
J
K
LOUDNESS
B A L A N C E
L O U D N E S S
30dB=0
Page 67
B5
normal 4 96
to MAIN (1)_W10
(A-S501)
2 584
2
3
4
2
3
4
V R 9 5 3
V R 9 5 2
Page 69
B5
1 0 K B
1 0 K B
1
1
to MAIN (1)_W10
(A-S301)
n o _ u s e
n o _ u s e
C 8 3 0
C 8 3 2
R 8 3 1
R 8 3 2
n o _ u s e
n o _ u s e
D 8 3 0
D 8 3 2
n o _ u s e
n o _ u s e
D 8 3 1
D 8 3 3
n o _ u s e
n o _ u s e
F G
F G
M V O L
D 8 1 4
POWER indicator
OPERATION (2)
4 96
O P E ( 2 )
3 07
S E L 6 9 1 0 A - C D
4 96
0 0337
4 88
Q 8 0 3
5 05
R K 1 6 8 1 1 M G A 0 9
G P 1 U E 2 7 1 R K V F
V R 8 5 1
C B 8 5 3
S
U 8 0 1
+ 5 M T R
O
U
T
G
V C C
D 8 5 3
V R G
S
V R G
n o _ u s e
4 95
D 8 5 4
+ 5 M
6
R 8 5 1
A D _ V O L
n o _ u s e
5
M G
4 7
C 8 5 2
R 8 7 4
U 8 0 1
B O D Y
4
M G
n o _ u s e
n o _ u s e
M G
O P E ( 7 )
3
V R U P
2
V R D N
1
P H L
P N 8 5 1
Page 62
L3
S W 8 0 5
to FUNCTION (1)_W504
POWER
0
S P U N 1 2 2 1 0 0
IC801 : LC709004AMJ
I/O-Expander for Microcontroller
DIN
Serial/parallel converter/shift register
CLK
GND_S
6
5
CS
PRE
GND
RES
I/O control/output register
LDCONT
TERMAL
SHUT DOWN
POW
GND
3
4
Port 0 I/O buffer
Port 1 I/O buffer
OUT -
GND
L
M
N
H P
O P E ( 5 )
C B 7 0 6
J K 7 0 1
C 1
H P _ D E T
O P 1
4 96
H P L 7 7
R 7 4 8 1 P 4 7 0
L
0 01
0 002
R
PHONES
H P E
O P 2
0
R 7 4 9 1 P 4 7 0
H P R
C 2
0 002
n o _ u s e
G N D
0 01
J 8 5 3
P N 7 0 2
S T 7 0 1
n o _ u s e
OPERATION (5)
VOLUME
C 8 5 6
C 8 5 4
0 . 0 1 ( B )
I C 8 5 2
1 / 5 0
B P
R 8 7 1
R 8 7 0
M A I N
V O L U M E
6 2 K
4 7 K
R 8 7 2 1 0 K
V R 8 5 1
4 22
R 8 7 3 1 0 K
R K 1 6 8 1 1 M G A 0 9
4 22
B H 6 5 7 8 F V M - T R
C 8 5 3
4 7 0 / 6 . 3
V R G
★ All voltages are measured with a 10M Ω /V DC electronic voltmeter.
★ Components having special characteristics are marked ⚠ and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
● 電圧は、内部抵抗 10M Ωの電圧計で測定したものです。
● ⚠印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがあります。
DOUT
V DD
V SS
Details of colored lines
Red / full line:
Power supply (+)
Red /dashed line: Power supply (‑)
Orange:
Signal detect
Yellow:
Clock
Green:
Protection detect
Brown:
Reset signal
Blue:
Panel key input

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