Yamaha A-S2000 Service Manual - Page 60

Function - a specification

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A B C D E F G H I A-S2000 1 FUNCTION 1/3 2 3 Page 65 M5 to FRONT (10)_W1002 CB301 4 5 6 12.0 -11.9 -11.9 -11.9 -11.8 -11.9 -11.9 -11.9 CD L 24.6 25.7 6.4 25.1 24.6 0.9 24.6 1.1 5.8 5.8 5.8 0 0.3 0.3 5.8 0 0.3 0.1 0.9 24.6 25.6 1.0 0 5.8 6.3 0.3 0.3 5.8 0 0.3 -0.4 -0.1 0.5 1.1 0.9 0.2 1.1 0.5 0 -0.9 -0.6 -0.9 -25.0 -0.6 -24.5 -24.5 -24.8 -25.6 25.7 0.9 0.3 25.7 1.1 0.6 0 -0.9 -25.6 0 -0.6 -25.6 24.6 25.7 6.4 25.1 24.6 0.9 24.6 25.2 1.1 5.8 5.8 5.8 0 0.3 0.3 5.8 0 0.3 25.7 24.6 0.9 1.3 5.8 0 6.3 5.8 0.1 0.1 0.3 0.3 0.3 1.1 0.9 0.3 1.1 0.5 0 0.5 0.5 0 -0.9 -0.6 -0.9 -25.1 -0.6 -0.3 -24.8 -24.5 -24.5 -25.5 25.7 0.9 0.3 25.7 1.1 0.5 0.3 -0.9 -25.6 0 -0.6 -25.6 LINE 2 7 8 9 0 -11.8 0 0 -11.8 0 12.6 0 0 IC301 0 0 0 IC301 0 -12.5 0 0 0 -11.8 0 -11.8 0 0 0 0 -11.8 -11.8 12.6 0 IC302 0 0 0 0 IC302 0 -12.5 12.6 0 IC303 0 0 0 0 IC303 0 -12.6 CD BAL L -11.9 -11.9 25.7 25.7 0.6 0.6 0 0 0.5 0.5 -25.6 -25.6 -11.9 -11.9 IN L 10 # All voltages are measured with a 10MΩ/V DC electronic voltmeter. # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. # Schematic diagram is subject to change without notice. 60 J K L W3006 W3005 Page 59 I7 to BALANCE_CB202 W3003 Page 59 I5 to BALANCE_CB201 W3001 Page 61 J4 to FUNCTION (2)_CB403 Page 61 B6 to FUNCTION (2)_CB402 W3002 Page 61 B5 to FUNCTION (2)_CB401 W3004 CB305 FUNCTION (1) Page 64 B5 to FRONT (1)_CB519 Page 65 B5 to FRONT (10)_W1003 M N IC301: NJM2068MD-TE2 Dual operational amplifier OUT1 1 -IN1 2 +IN1 3 -VCC 4 +- +- 8 +VCC 7 OUT2 6 -IN2 5 +IN2 IC302, 303: OP275GSR Dual bipolar/JFET, audio operational amplifier OUT A 1 -IN A 2 +IN A 3 V- 4 8 V+ 7 OUT B 6 -IN B 5 +IN B

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CB301
IC301
IC301
IC302
IC302
IC303
IC303
CB305
W3004
W3002
W3001
W3003
W3005
W3006
A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
A-S2000
60
★
All voltages are measured with a 10M
Ω
/V DC electronic voltmeter.
★
Components having special characteristics are marked
s
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
FUNCTION 1/3
12.0
-11.9
-11.9
-11.9
-11.8
-11.9
-11.9
0
0
-11.8
0
0
-11.8
0
0
0
0
0
-12.5
0
12.6
0
0
0
0
0
0
12.6
-12.5
0
0
0
-12.6
0
0
0
12.6
0
0
-11.8
0
0
-11.8
0
0
-11.8
0
0
-11.8
25.7
5.8
0.3
0.3
0.1
0.3
25.6
0.9
0
1.0
0.9
0
0.5
1.1
24.6
25.1
0.9
0.3
0
6.4
24.6
5.8
24.6
1.1
24.6
25.7
-0.9
0
-25.6
-24.5
-24.5
1.1
0.6
25.7
-11.9
-11.9
-11.9
-11.9
0
-0.6
-25.6
25.7
0.6
25.7
0.6
0
-25.6
0.5
0
0.5
-25.6
0.9
1.1
-0.6
0.2
-0.9
-0.4
0.5
-0.1
6.3
5.8
5.8
-0.9
-25.0
-24.8
-25.6
-0.6
0
0
0.3
0.3
0.3
5.8
5.8
25.7
5.8
0.3
0.3
0.1
0.3
24.6
0.9
0
1.3
0.9
0
0.5
1.1
24.6
25.1
0.9
0.3
0
6.4
24.6
5.8
25.7
1.1
25.2
24.6
25.7
-0.9
0.3
-25.6
-24.5
-24.5
1.1
0.5
25.7
0
-0.6
-25.6
0.9
1.1
0
-0.6
0.3
-0.9
-0.3
0.5
0.5
6.3
5.8
5.8
-0.9
-25.1
-24.8
-25.5
-0.6
0
0.1
0.3
0.3
0.3
5.8
5.8
-11.9
CD L
IN L
CD BAL L
FUNCTION (1)
LINE 2
IC301
: NJM2068MD-TE2
Dual operational amplifier
OUT
1
OUT
2
–
IN
1
+IN
1
+IN
2
-IN
2
–
V
CC
+V
CC
1
2
3
4
8
7
6
5
+
–
+
–
IC302, 303
: OP275GSR
Dual bipolar/JFET, audio operational amplifier
OUT A
-IN A
V-
V+
OUT B
1
2
3
4
5
+IN A
-IN B
+IN B
6
7
8
to BALANCE_CB201
Page 59
I5
to FUNCTION (2)_CB403
Page 61
J4
to FUNCTION (2)_CB402
Page 61
B6
to FUNCTION (2)_CB401
Page 61
B5
to FRONT (1)_CB519
Page 64
B5
to FRONT (10)_W1003
Page 65
B5
to BALANCE_CB202
Page 59
I7
to FRONT (10)_W1002
Page 65
M5