Focusing - Canon NP6330 Service Manual

3. Focusing

The copier's zoom lens unit consists of multiple lenses.
The zoom lens focuses on images with the help of the cam plate mount inside the
zoom lens unit.
The cam plate moves along the cam groove in the lens stage and focuses on images
by varying the distance between multiple lenses.
Lens home position signal (LHP)
M3
Lens home position
sensor (PS19)
COPYRIGHT © 1997 CANON INC.
Lens motor drive command
Lens motor
Lens mount
Cam groove
Signal plate
Figure 3-204
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 3 EXPOSURE SYSTEM
Motor driver 1
PCB
Rail
Reduce
Zoom lens
Cam plate
DC controller PCB
Lens drive belt
Lens stage
3-5