Yamaha A-S500 Service Manual page 55

A B C
OPERATION 1/2
1
OPERATION (2)
2
3
IC801
IC801
4
W808
0
0
0
0
0
0
Page 55 K6
0
0
to OPERATION (9)_CB852
0
0
0
15.5
-15.3
W807
4.9
5
0
Page 53 H2
0
0
to FUNCTION (1)_CB504
5.0
6
W809A
Page 56 K4
W809B
to OPERATION (1)_W1A, W1B
(J model)
5.0
5.0
0
3.8
7
2.8
5.0
Page 53 I2
to FUNCTION (1)_CB503
5.0
5.0
8 CB802
A-S500
9
10
D E F
PHONO
5.0
3.6
0
CB803 W802
0
0
0
0
0
0
PURE DIRECT
indicator
PURE DIRECT
INPUT
15.5
0
0
IC802 0
0
0
0
0
0
15.5
-15.3
0
0 CB804
IC802
0
-15.3
OUT L
CB901
W804
0
0 0.7
0
0
0
0.7 15.5
-15.3
0 0
Page 57 G9
to MAIN (1)_CB108
W803
(A-S500)
0
0
Page 59 G9
0
0
to MAIN (1)_CB108
(A-S300)
Page 57 A6
to MAIN (1)_CB101
(A-S500)
Page 59 A6
to MAIN (1)_CB101
(A-S300)
CB808 W801
5.0 5.0
5.0
5.0
5.0 5.0
5.0 5.0
3.7 3.7
2.8 2.8
5.0 5.0
0 0 REC OUT
A-S300
G H I
A-S300
INPUT indicators
OPERATION (5)
DOCK TUNER DC LINE1 LINE2 LINE3
5.0 5.0 1.9 5.0 5.0 5.0
3.6 3.6 0 3.6 3.6 3.6
0 0 5.0 0 0 0
0 0 0 0 0 0 0
0
0
0
5.0
0
0
0
5.0
5.0
OPERATION (3) VOL OUT
15.5
0
TONE IN
TONE OUT
IC901
0
0
TREBLE
CB902
0 0
0 0
BASS
0 0
0
0
0 0
15.5
-15.3
BALANCE
0
IC901
0 0
-15.3
POWER
indicator
OPERATION (6)
W805A W805B 5.0 3.2
5.0
5.0
5.0 5.0
5.0 5.0
0 1.2
5.0 5.0
0
0
5.0
0.6
SPEAKERS
0
0
5.0 0 5.0
OPERATION (11)
Page 53
to FUNCTION (1)_W504
Page 61
W806A W806B
A-S500 5.0 to DOCK_W302
5.0
(POWER)
5.0
5.0
5.0 5.0
OPERATION (10)
J K L
OPERATION (8)
Page 58 B4
to MAIN (6)_W10
(A-S500)
CB706
0
0
JK701
Page 60 B4
0 PHONES
to MAIN (6)_W10
(A-S300)
Page 53 J2
to FUNCTION (1)_CB505
5.0
0
W812
IC802, 901: NJM2068MD-TE2
Dual operational amplifier
(IC802: U, C, R, T, A, L models)
OUT
–V
CB951
0
0
0
0
0
LOUDNESS
OPERATION (4)
Page 55 B4 Page 53 D8
to OPERATION (2)_W808 to FUNCTION (1)_W401
VOLUME
0.6 0.6
0
0.6
CB853
0.8
5.0 0 0.4
0
0 0
L4 0 0
0
0
5.1
5.1
0
0 0.8
0.6
CB854
5.1
L8
0
0
OPERATION (9)
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
★ Components having special characteristics are marked
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、
with parts having specifications equal to those originally installed. 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。
★ Schematic diagram is subject to change without notice.
● 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。
M N
A-S500/A-S300
IC802: NJM5532M-D
Dual low noise operational amplifier
(B, G, J models)
1 8 +V A OUTPUT 1 8 V+
1 CC
–IN 2 7 OUT 2 A-INPUT 2 A 7 B OUTPUT
1
+ – + – – +
3 6 3 B 6
+IN 1 -IN 2 A+INPUT B-INPUT
+ –
4 5 +IN 4 5 B+INPUT
CC 2 V-
IC851: LB1641
Motor driver
3 2 8 10 9 7
VZ
4
5 INPUT LOGIC
IN 1 6 IN 2
GND 1
55