B. Cassette Lifter OperationWhen 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 motorstops where the lifter position sensor (PS25, PS28) can detect the top surface of thestack of copy paper on the lifter.When the cassette runs out of copy paper and the paper detecting lever moves awayfrom the paper sensor (PS26, PS29), the DC controller PCB indicates the Add Papermessage on the control panel.When you hold the grip of the cassette, the light-blocking plate moves away from thecassette open/closed sensor 3/4 (PS50/51), and the condition causes the lifter to movedown.Figure 5-203 (paper present)Figure 5-204 (paper absent)LifterPaper sensor Paper detecting leverPaper sensor Paper detecting leverCopy paperLifterCOPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 5 PICK-UP/FEEDING SYSTEM5-6Download service manual and resetter printer at http://printer1.blogspot.com
