2. Identifying the Presence/Absence of PaperThe presence and absence of copy paper inside the paper deck is identified by thedeck paper sensor (PS4).When the paper deck runs out of paper, the paper detecting spacer attached to thepick-up roller shaft drops.As a result, the paper detecting lever leaves the deck paper sensor (PS4), causingthe pedestal controller PCB to identify the absence of paper.Figure 8-406Figure 8-4078-12CHAPTER 8 PAPER DECK PEDESTALCOPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)Paper detecting lever (light-blocking plate)Paper detecting rollDeck paper sensor (PS4)LifterPaper detecting lever (light-blocking plate)Paper detecting rollCopy paperDeck paper sensor (PS4)Lifter