Detecting Jams; Jam - Canon DADF-M1 Service Manual

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 I/O Adjust Function Option
< JAM >
No. DATE TIME1 TIME2 L
01 1031 1653 1653
02 1030 1921 1923
03 1030 1748 1748
04 1030 1152 1152
05 1029 1810 1813
06 1029 1755 1756
07 - - - - - - - - - - - -
08 - - - - - - - - - - - -
PI7
PI1
PI8
Test
< 1/7 > < READY>
CODE P CNTR
1 0001 1 9399
0 0A11 0 0
1 0042 2 2515
1 0005 1 8668
0 010D 1 8096
0 0A08 0 0
- - - - - - - - - -
- - - - - - - - - -
F-2-40
PI4
PI3
PI5
PI6
PI9
PI2
F-2-41
Counter
SIZE
A4
- - - - - - - -
A4
A4
A4
- - - - - - - -
- - - - - - - -
- - - - - - - -
Chapter 2
0004-5590
2-39