B. Cassette Lifter OperationsThe lifter inside the cassette is designed so that the pick-up roller lowers when thecassette is pushed inside the copier, causing the lifter position sensor (P25, PS28) toleave the light-blocking plate. This condition turns ON the lifter motor (M14, M15) tomove up the lifter. 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 copy paper runs out and the paper detecting lever leaves the paper sensor(PS26, PS29), the message Add Paper is indicated on the control panel.The light-blocking plate leaves the cassette open/closed sensor 3/4 (PS50/PS51)when the grip of the cassette is held, lowering the lifter.Figure 5-203 (paper present)Figure 5-204 (paper absent)LifterPaper sensor Paper detecting leverPaper sensor Paper detecting leverCopy paperLifterCOPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 5 PICK-UP/FEEDING SYSTEM5-5
