Detecting Jams; Jam - Canon DADF-M1 Service Manual

Chapter 2

2.7 Detecting Jams

2.7.1 JAM

The machine checks for an original jam using the sensors shown in the figure. The timing
at which a check is made is programmed in the ROM on the reader controller PCB, and the
presence/absence of a jam is identified in terms of whether there is paper over a particular
sensor.
when it detects a jam, it communicates the fact to its host machine using a code, which may
be checked in the host machine's service mode.
-Service Mode Screen of the Host Machine
Display
No. DATE
01 1031
02 1030
03 1030
04 1030
05 1029
06 1029
07 - - - -
08 - - - -
2-46
I/O Adjust Function Option
< JAM >
TIME1 TIME2 L
1653 1653
1921 1923
1748 1748
1152 1152
1810 1813
1755 1756
- - - - - - - -
- - - - - - - -
< 1/7 > < READY>
CODE P CNTR
1 0001 1 9399
0 0A11 0
1 0042 2 2515
1 0005 1 8668
0 010D 1 8096
0 0A08 0
- - - - - - - - - -
- - - - - - - - - -
F-2-40
0004-5590
Test Counter
SIZE
A4
0 - - - - - - - -
A4
A4
A4
0 - - - - - - - -
- - - - - - - -
- - - - - - - -