Canon PH-72, Service Manual

Page: 13 / 32

2. Optional I/O Device Interface
Table 1-2-2 outlines the connectors and signals which connect the Paper Handling Controller
and optional I/O devices.
Table 1-2-2
1 - 5
CHAPTER 1
1
2
3
4
5
11
12
13
14
15
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
/TX
GND
/RX
/TERMINATE
+24V
/CLOCK
GND
GND
GND (KEY)
+24V
GND
/STROBE
PWRON
GND
+24V
Output
Input
Input
Output
Output
Output
Signal Abbreviation
Send data line
Receive data line
Communication ready signal
Synchronized clock signal
Mis-insertion prevention
Strobe signal
Power ON signal
Input/
Output
Pin