COPYRIGHT © 1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A. 7-7CHAPTER 7 PICK-UP/FEEDING SYSTEMD. Movement of the Lifter1. OutlineWhen the deck or the cassette is slid in, the cassette open/closed sensor turns on and, at thesame time, the pickup roller starts to move down, causing the light-blocking plate to leave the liftersensor, driving the cassette lifter motor and, ultimately, moving up the lifter.The lifter keeps moving up until the lifter sensor detects the surface of paper. (In the case of thedeck right/left, a limiter is mounted to stop the lifter if it fails to stop moving up.)When the deck or cassette open button is pushed, the drive gear of the lifter becomes free to letthe lifter move down on its own weight.Figure 7-202 ComponentsRight deckDeck right open/closed sensor(PS23)Lifter sensor(PS21)Deck right papersensor (PS22)Deck right paperlevel middlesensor (PS51)Deck right paperlevel upper sensor(PS52)Deck right limitsensor(PS24)Deck right liftermotor (M13)Cassette open/closed detectionLifter positiondetectionPaper presence/absence detectionCopy paper leveldetectionLifter upperlimiterDrive motorLeft deckDeck left open/closed sensor(PS33)Lifter sensor(PS31)Deck left papersensor (PS32)Deck lifter paperlevel middlesensor (PS54)Cassette 2 paperlevel upper sensor(PS55)Deck left limitsensor(PS34)Deck lifter motor(M14)Cassette 3Cassette 3 open/closed sensor(PS40)Lifter sensor(PS38)Cassette 3 papersensor (PS39)Cassette 3 paperlevel detectionPCB(variable resistor)---Cassette 3 liftermotor (M16)Cassette 4Cassette 4 open/closed sensor(PS45)Lifter sensor(PS43)Cassette 4 papersensor (PS44)Cassette 4 paperlevel detectionPCB(variable resistor)---Cassette 4 liftermotor (M17)
