Yamaha ACU16-C Service Manual page 45

R Q P
Q Q
3 7 6 3 1 5 1 5 0
ACU16-C OVERALL CIRCUIT DIAGRAM 1/10 (MAIN)
MAIN
to C1: H11
to C2: G8
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
.
: not installed (未実装)
未実装
ACU16-C
O N M L
EEPROM
CPU
3-8 DEMULTIPLEXER
x a o u 1 6 3
y
i
3-8 DEMULTIPLEXER
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K J I H
8
D-FF
to C2: K4
FLASH ROM 4M
Q Q
3 7 6 3 1
OR
to C1: H12, to C3: N2
from C2: P4
from C2: P4
from C2: K5
to C2: G8
from C2: G8
to C3: K9
from C3: J10
from C3: J11
D-FF
to C5: E11
from C1: P4
to C2: P4
to C2: K6
to C1: K2
to C1: J8
.
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G F E D
2 4
9 9 8
D-FF
to C3: E3
to C5: O6
to C2: P4
to C4: C4, to C5: E11
to C2: K3
to C4: J8
DRAM16M
5 1 5 0 8 9 2 4
OR
to C5: E11
BUFFER
to C2: K6, to C2: P3,
to C5: E11
to C3: N5
to C2: K6, to C2: P3
OR
TE12L
to C3: E2
OR
TE12L
OR
to C3: B7
to C3: D7
D-FF
to C3: K9
m
OR
to C3: E2
c o
to C3: J11
to C3: K9
OR
C B A
2
9 9
ACU16-C
1
2
3
4
5
6
OR
9 8 2 9 9
7
AND
8
9
to C3: D9
10
11
12
ACU16-C
C1
13