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1.32.
IC407 on the Main Board is using the Triple 3-Input
AND Gates IC YWMC74HC11F.
Description of this IC is as follows:
1A 1
1B 2
1A 3
2B 4
2C 5
2Y 6
GND 7
(TOP VIEW)
Truth Table
INPUTS
OUTPUT
A
B
C
L
L
L
∗ ∗
L
∗
∗
L
∗
∗
L
H
H
H
∗
: Don't care.
1.33.
IC831 and IC920 on the Main Board are using the
Dual D-FFs with Preset and Clear IC YWMC74HC
74AF.
Description of this IC is as follows:
1CLR 1
1D 2
1CK 3
(TOP VIEW)
1PR 4
1Q 5
1Q 6
GND 7
Truth Table
INPUTS
CLR PR
D
CK
∗ ∗
L
H
∗ ∗
H
L
∗
∗
L
L
H
H
L
H
H
H
∗
H
H
∗
: Don't care.
14 Vcc
13 1C
12 1Y
11 3C
10 3B
9 3A
8 3Y
Y
L
L
L
L
H
14 Vcc
13 2CLR
12 2D
11 2CK
10 2PR
9 2Q
8 2Q
OUTPUTS
Function
Q
Q
L
H
Clear
H
L
Preset
H
H
L
H
H
L
No Change
Qn
Qn
1.34.
IC503 to IC506 on the Main Board are using the Dual
Operational Amplifiers IC YWUPC4570G.
Description of this IC is as follows:
A OUT 1
A –IN 2
A +IN 3
Vss 4
1.35.
IC50 on the Main Board is using the Dual
Comparators IC NJM2903M.
Description of this IC is as follows:
OUT A 1
IN– A 2
IN+ A 3
GND 4
1.36.
IC810 on the Main Board is using the Dual
Operational Amplifiers IC NJM3415M.
Description of this IC is as follows:
OUT A 1
IN– A 2
IN+ A 3
Vss 4
1.37.
IC822, IC825 and IC828 on the Main Board are using
the Single 2-Input OR Gate IC YWTC7S32FL.
Description of this IC is as follows:
IN1 1
IN2 2
GND 3
(TOP VIEW)
31
8 Vcc
A
– +
7 B OUT
B
+ –
6 B –IN
5 B +IN
(TOP VIEW)
8 Vcc
A
– +
7 OUT B
B
+ –
6 IN– B
5 IN+ B
(TOP VIEW)
8 Vcc
A
– +
7 OUT B
B
+ –
6 IN– B
5 IN+ B
(TOP VIEW)
Truth Table
5 Vcc
Inputs
Output
IN1 IN2
L
L
L
4 OUT
H
L
H
L
H
H
H
H
H
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