
Y103920-3
Service Manual
111
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
Summary of Contents for PG L22 Special
Page 1: ...PG L22 Special Printer SERVICE MANUAL Code Y103920 3...
Page 18: ...Y103920 3 Service Manual 18 Upper cover unit Figure 2 2 Upper cover...
Page 136: ...Y103920 3 Service Manual 136 6 PARTS LIST Figure 6 1 Multi Purpose Feeder 9 5 7 6 4 1 2 3 8...
Page 137: ...Y103920 3 Service Manual 137 Table 6 1 Multi Purpose Feeder...
Page 151: ...Y103920 3 Service Manual 151 Table 6 1 High Capacity Paper Feeder...
Page 164: ......
Page 165: ...UPDATINGSTATUS DATE UPDATEDPAGES PAGES CODE 12 2004 1ST EDITION 165 Y103920 3...