Canon DADF-B1 Service Manual page 30

5. Sequence of Operations (pickup assembly)
Copying
started
Separation motor
(separation roller)
Pickup roller ascent
(pickup roller holder)
Lifter ascent
Pickup roller rotation
Separation roller
rotation
Separation sensor
(SR3)
Pre-registration
sensor (U502)
COPYRIGHT © 1999 CANON INC. CANON DADF-B1 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Pre-registration
sensor ON
CCW CW
Down Up
Up Down
Original leading
edge detected
Figure 2-220
CHAPTER 2 BASIC OPERATION
Reversal inlet Pre-registration
sensor ON sensor ON
CCW CW
Down Up
Up Down
Original trailing Original leading
edge detected edge detected
Original trailing
edge detected
2-17