Yamaha AD824 Service Manual page 79

1 2
AD824 OVERALL CIRCUIT DIAGRAM 3/4 (HA)
A
HA
B
1
C
D
2
E
F
3
G
H
4
I
INPUT
(BAL)
J
5
K
L
6
M
N
7
O
8
P
Q
AD824
1 2
3 4 5
OP AMP
3 4 5
6 7
MULTIPLEXER
OP AMP
MULTIPLEXER
OP AMP
OP AMP
MULTIPLEXER
OP AMP
OP AMP
MULTIPLEXER
OP AMP
OP AMP
MULTIPLEXER
OP AMP
OP AMP
MULTIPLEXER
OP AMP
OP AMP
MULTIPLEXER
OP AMP
OP AMP
MULTIPLEXER
OP AMP
OP AMP
6 7
8 9 10
BUFFER
INVERTER
D-FF
D-FF
D-FF
D-FF
D-FF
D-FF
to JK - CN202
Note : See parts list for details of circuit board
component parts
: Metal Film Resistor
: Flame Proof C. Resistor
: Electrolytic Cap.
8 9 10
11 12
AD824
A
B
C
to MAIN - CN903
D
DECODER
E
F
G
to DC - CN007
H
I
KEC - 92528
J
K
L
M
N
O
P
Q
AD824
11 12