Casio PCR-365A Service Manual page 26

4. TC74HC367AP
Output
1
Control G
1
1A 2
1Y 3
2A 4
2Y 5
3A 6
3Y 7
GND 8
6. TC74HC373AP
Output
1
Control
1Q 2
1D 3
2Q 4
2D 5
3Q 6
3D 7
4Q 8
4D 9
GND 10
Output 1D
Control
16 Vcc
Output
15
Control G
2
14 6A
13 6Y
12 5A
11 5Y
10 4A
9 4Y
20 Vcc
19 8D
Q Q
OE OE
G D G D
18 8Q
17 7D
D D
G G
OE OE
Q Q
16 7Q
15 6D
Q Q
OE OE
G D G D
14 6Q
13 5D
G D G D
OE OE
Q Q
12 5Q
Enable
11
G
1Q 2Q 3Q 4Q
Q Q Q
D G D G D G D G
2D 3D 4D
— 24 —
5. TL431CLPB
(R)
+
Vref
–
Vref 2.5 V
Anode (A)
5Q 6Q 7Q
Q Q Q Q
D G D G D G
5D 6D 7D
Cathode (K)
8Q
Q
D G
8D Enable
G