Pioneer PDP-5050SX Service Manual page 168

1
A
Pin Function
Pin Name
CLK
DA
DB
CLR
LE
A / B
OC1
B
OC2
HVO 99,100,1-30
VDD
GND 35-41,82-83
VH1 32,33,96,97
VH2 43,44,79,80
NC 31,34,41,45
78,81,95,98
C
D
E
F
168
1
2
No. I/O
86 I Shift clock.
91 I / O Serial data input/output of Sift register pin.
85 I / O Serial data input/output of Sift register pin.
92 I
"H" level: sift register contents of "L" level.
"L" level: Slew, "H" level: Larch
87 I
84 I Setup pin of sift register sift direction.
89 I HVO Output control pin.
90 I HVO Output control pin.
O High-voltage drive output. (HVO1 - HVO64)
46-77
88 - Logic power supply.
- Reference potential 0V (HVO diode anode)
93-94
- HVO1 - 32 High voltage circuit power supply (HVO diode cathode).
- HVO33 - 64 High voltage circuit power supply (HVO diode cathode).
-
NC pin
2
3
Function
PDP-5050SX
3
4
4