Acom 2100 Schematics page 12

(p2A4)
+5V
R89
4.7k
n/c
9
1
LEDA3
U18A
8
(p5B3)
(p2A4)
+5V
R90
4.7k
2
LEDA2
U18B
(p5B3)
(p2A4)
+5V
R91
4.7k
3
LEDA1
U18C
(p5B3)
4
K1
U18D
(p6A3)
5
K2
U18E
(p6B3)
R86
ULN2003D
330
*LA3
16
C83
47n
R85
ULN2003D
330
*LA2
15
C82
47n
R88
ULN2003D
330
*LA1
14
C81
47n
ULN2003D
13 *KK1
C84
47n
ULN2003D
*KK2
12
C85
47n
*LEDA3
(p4A4)
*LEDA2
(p4B4)
*LEDA1
(p4B4)
RFC17
10uH
(p4B3)
RFC18
10uH
(p4B3)
D22
BAV70
(p2B2)
BAV70
TOP VIEW1
C
A A
CONTROL 7/9
n/c
*K1
n/c
*K2
+24VPI
Not used:
ULN2003D
n/c
6 11
U18F
ULN2003D
n/c
7 10
U18G