42641101TH Rev.1 111 /
Oki Data CONFIDENTIAL
APPENDIX D LOOP TEST (RS-232C INTERFACE)
1) Connect the test connector
2) Select "LOOP Test" in the system maintenance mode.
The codes transmitted from the TD signals are comparatively checked with the data received from
the RD signals. If any error occurs, the error message is displayed on the LCD.
DB-25S made by
Cannon or
equivalent
TD
RD
RTS
CTS
CD
SSD
DTR
DST
2
3
4
5
8
11
20
6
Test Connector Connection Diagram