Service manual

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 7 PICK-UP/FEEDING SYSTEM
7-16
b. Delay jam at the time of the second or subsequent sheet pick-up.
In this case there are 2 types of timing which monitor the feeding situation. Detection
and jam judgement is done by both these timings.
• A jam is determined at the same timing as the previously explained delay jam at
the time of the first sheet pick-up.
• Counting starts when the preceding sheet of paper has passed through the regis-
tration sensor (PS302), and if the leading edge of the next sheet of paper has not
arrived at the registration sensor (PS302) within approx. 2.0 seconds, it is judged
that a delay jam has occurred.
Figure 7-604
Figure 7-605
Pick-up sensor
(PS303)
Registration sensor
jam check
Registration sensor
(PS302)
Main motor
(M601)
Start signal
2.3 sec.
Normal
2.3 sec.
Abnormal
Pick-up sensor
(PS303)
Registration sensor
jam check
Registration sensor
(PS302)
Main motor
(M601)
2.0 sec.
2.0 sec.
Abnormal
Start signal
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