E. Switching the Paper Size for Two-Sided/Overlay/ReversalDelivery Copies1. Movement of the Paper Size GuideWhen the Copy Start key is pressed in two-sided/overlay/reversal delivery mode, theholding tray (X, Y) motor (M8, M9) starts to rotate clockwise, and the paper size guideplate moves in the direction of the arrow.The motor (M8, M9) stops when the light-blocking plate of the paper size guide plateblocks the holding tray (X, Y) home position sensor (PS21, PS20).The DC controller PCB sends pulses to the motor (M8, M9) according to the size ofcopy paper so that the motor rotates in reverse to move the paper size guide plate to suitthe selected copy size and keep it in wait for the arrival of copy paper.While copying on the second side, the motor (M8, M9) remains at rest until copyingon the first side of the next copy starts.Figure 5-614DC controller PCBM8 M9Holding trayY motorHolding trayX motor(CW rotation)(CCW rotation)Paper sizeguide platePS20Light-blockingplateTrailing edgeguide plateHolding tray (Y) home position sensor (HTYHP) J113A-10Holding tray (X) home position sensor (HTXHP) J113B-1PS21COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 5 PICK-UP/FEEDING SYSTEM5-34
