Cassette Lifter Operation - Canon NP6251 Service Manual

CHAPTER 5 PICK-UP/FEEDING SYSTEM
B. Cassette Lifter Operation
When the cassette is slid into the copier, pick-up roller moves down, and the light-
blocking plate moves away from the lifter position sensor (PS31, PS34, PS25, PS28),
turning on the lifter motor (M14, M15) and moving the lifter to move up. The lifter motor
stops where the lifter position sensor (PS25, PS28) can detect the top surface of the
stack of copy paper on the lifter.
When the cassette runs out of copy paper and the paper detecting lever moves away
from the paper sensor (PS26, PS29), the DC controller PCB indicates the Add Paper
message on the control panel.
When you hold the grip of the cassette, the light-blocking plate moves away from the
cassette open/closed sensor 3/4 (PS50/51), and the condition causes the lifter to move
down.
5-6
COPYRIGHT © 1997 CANON INC.
Download service manual and resetter printer at http://printer1.blogspot.com
Paper sensor Paper detecting lever
Copy paper
Lifter
Figure 5-203 (paper present)
Paper sensor Paper detecting lever
Lifter
Figure 5-204 (paper absent)
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)