Pioneer PDP-506PE Service Manual page 89

5
TC74VHC08FTS1 (50 Y DRIVE ASSY : IC2003, IC2005)
• Quad 2-input AND Gate
Pin Arrangement (Top view) / Block Diagram
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
AXF1141 (50 Y DRIVE ASSY : IC2252, IC2253)
• Y Mask Module
Block Diagram
SUSOUT
1
SUSOUT
2
SUSOUT
3
SUSOUT
4
SUSGND
6
SUSGND
7
SUSGND
8
SUSGND
9
SUSGND
10
VSUS
12
VSUS
13
VSUS
14
VSUS
15
VSUS
16
GND
18
SUS-G
19
SUS-B
20
+5V
21
+15V
22
5
6
14 V
CC
13 4B
12 4A
11 4Y
10 3B
9 3A
8 3Y
Delay
Driver
Circuit
6
7
Truth Table
A B
L L
L H
H L
H H
PDP-506PE
7
8
Y
L
L
L
H
SUS-MSK
44
MSK-S
43
PSUS
40
PSUS
39
PSUS
38
PSUS
37
PSUS
36
PSUS
33
PSUS
32
PSUS
31
PSUS
30
PSUS
29
MSK-S
27
MSK-S
26
SUBGND
24
SUBGND
23
8
A
B
C
D
E
F
89