3.9
Materials for Reference
1)
COM1, COM2 (RS-232C) loopback connectors
9-pin D-SUB (female)
1
2
3
4
5
6
7
8
9
2)
COM3 (RS-232C) loopback connector
8-pin modular connector
1
2
3
4
5
6
7
8
3)
Printer cable connection diagram
Centronics 36-pin
1
19
2
3
4
5
6
7
8
9
14
13
10
28
11
29
12
30
16
31
32
36
D-SUB 25-pin (female)
1
19
2
3
4
5
6
7
8
9
14
13
10
20
11
21
12
22
18
16
15
17
3-48