Canon PC920, Service Manual

Page: 214 / 393

CHAPTER 8 ADF
COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
8-8
E. Pickup Operation
1. Operation
When an original is placed on the original tray and the Copy Start key is pressed, the following
sequence of operations takes place:
1 Preparing for PickUp Operation
When an original is placed on the original tray, i.e., the original placement sensor (PI3) turns
ON, the pickup roller rotates counterclockwise and the paper guide holds the original in place.
Figure 8-108
2 Pickup Separation
When the Copy Start key is pressed, the pickup roller 1 and 2 rotate clockwise, and pick up the
first original (topmost) and forward it as far as the registration roller. (The separation pad ensures
that only one original is picked up.)
Figure 8-109
Original tray
1st original
PI3
Paper guide
1st original
Separation pad
Pickup roller 1
Pickup roller 2
Registration roller