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Yamaha A-S2100 Service Manual page 78

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A
B
C
A-S2100
FUNCTION 2/4
1
FUNCTION (1)
2
3
C 7 4 1
1 0 0 P / 6 3 0
F U N C ( 1 )
A 1 3 1 2 - G R , B L ( T E 8
R 7 6 2
2 7 0
0
.
7
8
V
R 7 6 7
P
1 0 0
C 7 3 9
1 0 0 0 P / 1 0 0
1 . 3 7 V
4
R 7 6 4
2 . 2 K
0 . 6 2 m A
5
4 7 K
6
R 7 1 1
R 7 1 4
R 7 4 9
R 7 5 1
1 0 K
4 7 K
1 0 K
4 7 K
R 7 1 5
R 7 4 1
R 7 5 0
Q 7 1 1
4 7 K
1 0 0 K
Q 7 1 5
4 7 K
A 1 0 3 7 A K ( Q / R / S )
A 1 0 3 7 A K ( Q / R / S )
C 7 1 3
C 7 3 4
1 / 5 0
1 / 5 0
R 7 2 0
R 7 3 9
1 5 K
D 2 7 0 4 ( K )
D 2 7 0 4 ( K )
1 5 K
R 7 2 7
R 7 3 3
1 0 0 K
1 0 0 K
+18.1
-18.3
+18.1
7
R 7 2 9
C 1 0 6 3
C 1 0 6 4
R 7 3 1
1 . 5 K
1 . 5 K
2 2 / 1 6
2 2 / 1 6
R 7 2 2
R 7 4 0
3 3 0 K
3 3 0 K
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
N J U 7 2 3 2 1
I C 7 1 7
1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2
C H A S S I S 3
8
P
R 7 4 3
C 7 2 0
0
R 7 3 6
R 7 4 4
1 0 0 / 3 5
n o _ u s e
0
R 7 3 7
R 7 4 5
0
n o _ u s e
R 7 3 8
R 7 4 6
0
n o _ u s e
C 7 2 9
C 7 3 0
1 0 P ( C H )
C 7 3 1
1 0 P ( C H )
1 0 P ( C H )
9
C H A S S I S 2
S T 7 1 1
10
78
D
E
F
Page 81
B9
Page 81
B8
Page 76
M6
to MAIN (2)_ST201
to MAIN (2)_CB204
to INPUT (2)_W31
M A I N ( 2 )
M A I N ( 2 )
I N P U T ( 2 )
S T 2 0 1
C
B
2
0
4
W
3
1
1
3
2
3
4
5
6
7
8
9
1 0
1 1
M G
+ 5 S
OUT L
C 7 4 5
C 7 6 4
4 5 m V
4 7 / 3 5
4 7 / 3 5
R 8 4 4
4 5 m V
1 P 2 . 2
2 0 . 5 m A
s 1 0 1
R 8 2 6
1 P 2 . 2
s 1 0 1
C R 5 1 3 P
A R 5 1 3 P
C R 5 1 3 P
A R 5 1 3 P
Q 7 1 9
R 7 7 2
R 7 8 5
Q 7 2 5
Q 7 3 0
R 8 1 6
R 8 2 2
Q 7 3 5
D 7 3 1
1 P 6 8
1 P 6 8
1 P 6 8
1 P 6 8
U D Z V 2 0 B
C 7 5 8
C 7 6 0
C 7 7 9
C 7 5 1
1 0 0 P / 6 3 0
1 0 0 P / 6 3 0
C 7 7 1
1 0 0 P / 6 3 0
D 7 1 3
D 7 2 3
1 0 0 / 5 0
C 3 3 2 4 - G R , B L ( T E 8
A 1 3 1 2 - G R , B L ( T E 8
1 0 0 / 5 0
C 3 3 2 4 - G R , B L ( T E 8
1 S S 3 5 5 V M
1 S S 3 5 5 V M
Q 7 1 8
D 7 1 5
Q 7 2 6
Q 7 2 9
D 7 2 5
Q 7 3 6
R 7 9 9
R 8 0 2
R 8 3 8
2 0 0
2 7 0
2 0 0
D 7 1 1
1 S S 3 5 5 V M
D 7 2 1
1 S S 3 5 5 V M
1 S S 3 5 5 V M
0
.
5
7
V
1 S S 3 5 5 V M
3 m A
R 8 0 7
P
3 9 . 7 V
D 7 1 8
1 0 0
C 7 5 9
1 S S 3 5 5 V M
R 7 8 7
1 0 0 0 P / 1 0 0
3 3 K
D 7 1 6
1 . 2 m A
1 S S 3 5 5 V M
R 7 8 9
R 8 2 7
Q 7 2 3
7 . 5 K
Q 7 3 3
7 . 5 K
1 . 2 8 m A
K 2 0 9
0 . 6 V
K 2 0 9
R 8 2 8
R 7 9 0
4 7 0
4 7 0
C 3 3 2 4 - G R , B L ( T E 8
C 3 3 2 4 - G R , B L ( T E 8
R 8 0 4
2 6 m W
1 . 2 8 m A
2 . 2 K
C 8 7 5
C 8 7 6
P
P
1 0 0 P / 6 3 0
1 0 0 P / 6 3 0
R 7 9 7
R 8 0 8
R 1 1 4 7
1 M
1 M
R 1 1 4 8
0
0
R 9 9 9
1 0 0 K
R Y 7 1 1
E C 2 - 2 4 N U - F
E C 2 - 2 4 N U - F
R Y 7 1 1
R Y 7 1 1
E C 2 - 2 4 N U - F
D 7 1 7
- 1 2 D
1 S S 3 5 5 V M
R 8 1 9
R 8 2 9
2 . 2 M
2 . 2 M
-18.3
+18.2
-18.3
4 7 K
+18.2
D 7 3 0
T F Z G T R 1 8 B
R 8 4 7
R 8 4 8
1 2 K
1 2 K
R 7 8 6
Q 7 3 7
1 0 0 K
K T C 4 3 7 0 A - Y
R 7 5 6
R 7 8 3
4 7 0
D 2 7 0 4 ( K )
D 2 7 0 4 ( K )
4 7 0
1 9 . 5 m A
( 2 0 . 3 m A T C O N )
R 7 6 6
R 7 7 9
1 0 0 K
1 0 0 K
-18.3
+18.1
-18.3
R 7 6 9
C 1 0 6 5
C 1 0 6 6
R 7 7 1
R 8 2 1
R 8 2 5
2 . 2 K
2 . 2 K
2 2 / 1 6
2 2 / 1 6
n o _ u s e
n o _ u s e
R 7 5 8
R 7 8 4
R 8 1 2
R 8 3 7
3 3 0 K
3 3 0 K
3 3 0 K
3 3 0 K
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
N J U 7 2 3 2 1
I C 7 1 8
N J U 7 2 3 2 1
I C 7 1 9
1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2
1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2
P
P
R 7 9 1
R 8 4 0
C 7 4 3
C 7 7 2
0
0
R 7 8 0
R 7 9 2
R 8 3 3
R 8 4 1
1 0 0 / 3 5
n o _ u s e
0
1 0 0 / 3 5
n o _ u s e
0
R 7 8 1
R 7 9 3
R 8 3 4
R 8 4 2
0
0
n o _ u s e
n o _ u s e
R 7 8 2
R 7 9 4
R 8 3 5
R 8 4 3
0
0
n o _ u s e
n o _ u s e
C 7 5 5
C 7 8 4
C 7 5 6
C 7 8 5
1 0 P ( C H )
1 0 P ( C H )
C 7 5 7
C 7 8 6
1 0 P ( C H )
1 0 P ( C H )
1 0 P ( C H )
1 0 P ( C H )
IN L
D 7 1 9
D 7 2 8
D 7 2 0
D 7 2 9
n o _ u s e
n o _ u s e
n o _ u s e
n o _ u s e
S W 7 1 1
S W 7 1 3
A T E 1 D - 5 M 3 - 1 0 - Z
A T E 1 D - 5 M 3 - 1 0 - Z
B
A
L
B
A
L
G A I N S e l e c t
P o l a r i t y S e l e c t
S T 7 1 4
ATT.
BYPASS
NORMAL
INV.
(-6dB)
I N P U T ( 1 )
ATTENUATOR
PHASE
W 9 0 6
INPUT
Page 75
K5
to INPUT (1)_W906
G
H
Page 81
B4
Page 81
B4
to MAIN (1)_CB104
to MAIN (1)_ST101
M A I N ( 3 )
M A I N ( 3 )
C B 1 0 4
S T 1 0 1
1
3
1 2
4 5 m V
2 0 . 5 m A
C 8 0 9
C 8 2 4
R 8 5 7
1 P 2 . 2
4 5 m V
4 7 / 3 5
4 7 / 3 5
s 1 0 1
2 0 . 5 m A
R 8 6 0
1 P 2 . 2
s 1 0 1
C R 5 1 3 P
A R 5 1 3 P
C R 5 1 3 P
Q 7 4 4
R 8 7 2
R 8 7 7
Q 7 4 9
Q 7 5 5
R 9 1 0
R 8 4 9
R 8 5 0
D 7 3 4
1 P 6 8
1 P 6 8
1 P 6 8
2 7 K
2 7 K
U D Z V 2 0 B
C 7 9 9
C 8 1 5
C 8 2 5
C 8 0 8
K T C 4 3 7 0 A - Y
K T A 1 6 5 9 A
1 0 0 P / 6 3 0
Q 7 3 9
1 0 0 P / 6 3 0
1 0 0 P / 6 3 0
Q 7 4 0
A 1 3 1 2 - G R , B L ( T E 8
D 7 4 3
1 0 0 / 5 0
C 3 3 2 4 - G R , B L ( T E 8
A 1 3 1 2 - G R , B L ( T E 8
D 7 5 2
1 S S 3 5 5 V M
Q 7 4 3
1 S S 3 5 5 V M
D 7 4 5
Q 7 5 1
Q 7 5 4
C 7 8 9
C 7 9 0
R 8 5 8
R 8 9 4
R 9 0 0
2 7 0
2 0 0
2 7 0
D 7 4 2
1 S S 3 5 5 V M
D 7 5 1
1 0 0 / 3 5
1 0 0 / 3 5
1 S S 3 5 5 V M
1 S S 3 5 5 V M
R 9 0 4
R 8 6 4
P
P
C 8 2 3
1 0 0
1 0 0
C 7 9 5
1 0 0 0 P / 1 0 0
1 0 0 0 P / 1 0 0
R 8 7 9
3 3 K
R 8 8 2
Q 7 4 7
7 . 5 K
K 2 0 9
R 8 8 1
4 7 0
Q 7 7 3
C 3 3 2 4 - G R , B L ( T E 8
R 8 6 3
R 9 0 2
2 . 2 K
2 . 2 K
C 8 7 7
C 8 7 8
P
P
1 0 0 P / 6 3 0
1 0 0 P / 6 3 0
R 8 9 0
R 9 0 6
D 2 7 0 4 ( K )
D 2 7 0 4 ( K )
C 8 8 4
R 1 1 4 9
1 M
1 M
R 1 1 5 0
0
0
Q 7 5 0
Q 7 5 2
2 . 2 / 5 0
Q 7 6 9
A 1 0 3 7 A K ( Q / R / S )
R 1 1 5 1
8 2
Q 7 7 0
A 1 0 3 7 A K ( Q / R / S )
R 1 0 0 0
1 0 0 K
R 1 1 3 6
R 1 1 4 6
4 7 K
4 7 K
4 7 K
R Y 7 1 2
E C 2 - 2 4 N U - F
E C 2 - 2 4 N U - F
E C 2 - 2 4 N U - F
R Y 7 1 2
R Y 7 1 2
D 7 3 5
- 1 2 D
R 8 7 1
R 8 8 6
1 S S 3 5 5 V M
2 . 2 M
2 . 2 M
4 7 K
D 7 3 3
D 7 3 8
D 7 3 2
R 9 0 3
R 9 0 7
T F Z G T R 1 8 B
R 8 5 1
R 8 5 5
T F Z G T R 1 8 B
T F Z G T R 1 8 B
1 0 K
4 7 K
1 2 K
1 2 K
R 9 0 8
Q 7 3 8
Q 7 4 1
Q 7 4 2
Q 7 5 3
4 7 K
A 1 0 3 7 A K ( Q / R / S )
K T A 1 6 5 9 A
K T C 4 3 7 0 A - Y
K T A 1 6 5 9 A
C 8 2 6
1 / 5 0
R 9 1 6
4 7 0
D 2 7 0 4 ( K )
1 9 . 5 m A
( 1 9 . 8 m A T C O N )
R 9 2 7
1 0 0 K
+18.2
-18.2
+18.2
R 9 3 0
C 1 0 6 7
R 8 7 6
R 8 8 0
2 . 2 K
2 2 / 1 6
n o _ u s e
n o _ u s e
R 8 6 7
R 8 9 2
3 3 0 K
3 3 0 K
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
1 6
1 5
1 4
1 3
1 2
N J U 7 2 3 2 1
I C 7 2 0
N J U 7 2 3 2 1
1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2
1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2
P
P
R 8 9 6
C 8 0 6
0
R 8 8 7
R 8 9 7
1 0 0 / 3 5
n o _ u s e
0
R 8 8 8
R 8 9 8
0
n o _ u s e
R 8 8 9
R 8 9 9
0
n o _ u s e
C 8 2 0
C 8 2 1
1 0 P ( C H )
C 8 2 2
1 0 P ( C H )
1 0 P ( C H )
D 7 3 9
D 7 4 8
D 7 4 0
n o _ u s e
n o _ u s e
D 7 4 9
n o _ u s e
n o _ u s e
C 7 9 2
R 8 5 3
n o _ u s e
n o _ u s e
D 7 3 6
D 7 3 7
n o _ u s e
n o _ u s e
C 7 9 3
R 8 5 4
n o _ u s e
n o _ u s e
S T 7 1 2
2
3
4
5
6
7
1
7
Details of colored lines
I N P U T ( 1 )
W 9 0 3
Page 75
K4
to INPUT (1)_W903
I
J
K
D 7 5 7
D 7 5 8
A R 5 1 3 P
R 9 1 7
Q 7 6 0
T F Z G T R 1 3 B
T F Z G T R 1 3 B
C 8 4 8
C 8 5 3
1 P 6 8
1 0 0 / 1 6
1 0 0 / 1 6
C 8 3 7
C 8 3 0
1 0 0 P / 6 3 0
C 8 4 9
C 8 5 4
1 0 0 / 5 0
C 3 3 2 4 - G R , B L ( T E 8
P
Q 7 6 3
D 7 5 4
R 9 3 2
1 0 0 P / 6 3 0
1 0 0 P / 6 3 0
2 0 0
R 9 5 7
R 9 6 2
1 S S 3 5 5 V M
5 . 1 K
5 . 1 K
D 7 4 6
1 S S 3 5 5 V M
D 7 4 7
1 S S 3 5 5 V M
+13.3
-13.3
R 9 2 6
-13.3
- 1 2 P R E
5
Q 7 5 8
7 . 5 K
+13.3
+ 1 2 P R E
4
P R E O U T _ R
3
K 2 0 9
A G N D
R 9 2 4
2
4 7 0
P R E O U T _ L
Q 7 7 4
C 3 3 2 4 - G R , B L ( T E 8
C B 7 1 5
P H I
C 8 7 4
R 9 9 8
n o _ u s e
n o _ u s e
4 7 K
R 9 5 6
R 9 5 8
1 0 K
4 7 K
R 9 5 1
R 9 5 9
R 9 9 6
1 0 0 K
Q 7 6 5
4 7 K
1 0 0 K
A 1 0 3 7 A K ( Q / R / S )
C 8 5 1
1 / 5 0
R 9 4 4
R 9 6 7
R 9 8 9
D 2 7 0 4 ( K )
4 7 0
1 5 K
D 2 7 0 4 ( K )
D 2 7 0 4 ( K )
1 5 K
R 9 3 9
R 9 7 5
R 9 8 2
1 0 0 K
1 0 0 K
1 0 0 K
-18.2
+18.2
-18.2
C 1 0 6 8
R 9 3 5
R 9 7 9
C 1 0 6 9
C 1 0 7 0
R 9 8 1
2 . 2 K
1 . 5 K
1 . 5 K
2 2 / 1 6
2 2 / 1 6
2 2 / 1 6
R 9 1 9
R 9 4 3
R 9 7 1
R 9 9 0
3 3 0 K
3 3 0 K
3 3 0 K
3 3 0 K
C 8 7 3
R 9 9 7
n o _ u s e
n o _ u s e
1 1
1 0
9
8
7
6
5
4
3
2
1
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
P S V A 1
P S V A 1
I C 7 2 1
N J U 7 2 3 2 1
I C 7 2 2
1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2
P S V A 2
P S V A 2
P R V
P R V
R Y _ T C B Y P
R Y _ T C B Y P
M T _ N _ M A I N
M T _ N _ M A I N
S W _ T R E
S W _ T R E
P
R 9 4 7
R 9 9 2
S W _ B A S
S W _ B A S
C 8 3 5
C 8 6 1
0
0
E V _ D T
R 9 4 0
R 9 4 8
R 9 8 6
R 9 9 3
E V _ D T
1 0 0 / 3 5
n o _ u s e
0
1 0 0 / 3 5
n o _ u s e
0
E V _ C K
R 9 4 1
R 9 4 9
R 9 8 7
R 9 9 4
E V _ C K
0
0
E V _ L B A S
n o _ u s e
n o _ u s e
E V _ L B A S
R 9 4 2
R 9 5 0
R 9 8 8
R 9 9 5
E V _ L T R E
0
0
E V _ L T R E
n o _ u s e
n o _ u s e
E V _ L C O M
E V _ L C O M
C 8 4 5
C 8 7 0
E V _ R C O M
E V _ R C O M
C 8 4 6
C 8 7 1
1 0 P ( C H )
1 0 P ( C H )
C 8 4 7
C 8 7 2
1 0 P ( C H )
1 0 P ( C H )
B A L G _ D E T
1 0 P ( C H )
1 0 P ( C H )
B A L G _ D E T
E V _ R T R E
E V _ R T R E
E V _ R B A S
E V _ R B A S
B A L _ P L T Y
B A L _ P L T Y
Red / full line:
Power supply (+)
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
Red /dashed line:
Power supply (-)
★ Components having special characteristics are marked
Orange:
Signal detect
with parts having specifications equal to those originally installed.
Yellow:
Clock
★ Schematic diagram is subject to change without notice.
Green:
Protection detect
Brown:
Reset signal
Blue:
Panel key input
L
M
N
IC710–715: OP275GSR
Dual bipolar/JFET, audio operational amplifier
OUT A
1
8
V+
-IN A
2
7
OUT B
+IN A
3
6
-IN B
V-
4
5
+IN B
IC716: NJM2068MD-TE2
Dual operational amplifier
OUT
1
8
+V
1
CC
–IN
1
2
7
OUT
2
+ –
+ –
+IN
3
6
-IN
1
2
–V
4
5
+IN
CC
2
Page 75
K6
to INPUT (1)_W904
IC717–722:
NJU72321
2-ch electronic volume
InL
26
3
InR
23
14
V+
Zero Cross Detection
D_VDD
22,24
17
+5V
Control Logic
25,27
21
D_REF
30-32
18
19
20
29
V-
D_GND
R E S I S 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
C A R B O N
F I L M R E S I S T O R
( P = 5 )
C A R B O N
F I L M R E S I S T O R
( P = 1 0 )
M E T A L
O X I D E F I L M R E S I S T O R
M E T A L
F I L M
R E S I S T O R
M E T A L
P L A T E R E S I S T O R
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
C E M E N T
M O L D E D R E S I S T O R
S E M I
V A R I A B L E
R E S I S T O R
C H I P R E S I S T O R
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
N O T I C E
( m o d e l )
J
J A P A N
U
U . S . A
C
C A N A D A
R
G E N E R A L
T
C H I N A
K
K O R E A
A
A U S T R A L I A
B
B R I T I S H
G
E U R O P E
L
S I N G A P O R E
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
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
and must be replaced
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。

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