Canon GP605 Service Manual page 293

b. Other Delay Jams
Basically, the same principles are used to detect delay jams other than pickup sensor delay
jams.
Sensor N-1
Jam check
Sensor N
A check is made for about 0.13
sec to find out if paper has
reached the sensor N.
COPYRIGHT © 1999 CANON INC.
Copy Start key
ON or
PRINT set
INTR
I
0.13 sec
Normal
Figure 7-703 Detecting Other Delay Jams
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 7 PICK-UP/FEEDING SYSTEM
A specific time I after the leading edge
of paper is detected by the sensor N-1,
a jam check is started.
/ PRINT
I
0.13 sec
Error
A delay jam is identified if
paper does not reach the
sensor N during this period.
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