Pioneer PDP-504PE Service Manual page 72

1
BA8274F (PANEL IF ASSY: IC4206)
2
• I C Bus Interface IC
A
Block Diagram
B
C
Pin Function
Pin
Pin No.
Name
2 L
D
7 L
3 S
E
6 S
4 GND
8 V
CC
F
72
1
2
V
CC
8
1
N.C.
Equivalent Circuit
V
CC
X
Y
GND
V
CC
X
Y
35.7
GND
2
3
L S
Y Y
7 6
Buffer
Buffer
2 3
L S
X X
Buffer output
35.7
Buffer input
Ground
Power supply
PDP-504PU
3
N.C.
5
4
GND
Pin Function
4
4