As many as 17 sensors in total are used to monitor the movement of copy paper; seeFigure 5-101 for arrangement.Table 5-101COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 5 PICK-UP/FEEDING SYSTEM5-2Notation Name Notation NamePS8 Holding tray feeding assembly 1 paper sensor PS24 Pick-up vertical path 0 paper sensorPS9 Holding tray feeding assembly 2 paper sensor PS27 Pick-up vertical path 3 paper sensorPS10 External delivery sensor PS30 Pick-up vertical path 4 paper sensorPS12 Internal delivery sensor (reversing assembly) PS33 Pick-up vertical path 1 paper sensorPS14 Holding tray registration paper sensor PS36 Pick-up vertical path 2 paper sensorPS15 Holding tray inlet paper sensor PS47 Fixing assembly outlet paper sensorPS17 Holding tray pick-up sensor PS49 Left deck outlet paper sensorPS22 Multifeeder pick-up sensor PS52 Claw jam sensorPS23 Registration paper sensor