Canon imageRUNNER 330 Service Manual page 179

CHAPTER 7 PICK-UP/FEEDING SYSTEM
2. Detecting the Size of Paper (multifeeder)
n Detecting the Width
The width of paper is detected by the variable resistor (VR1751) operating in conjunction with
the movement of the slide guide. The slide guide is set by the user to suit the size of the paper
placed on the multifeeder tray.
n Rear/Front Registration
The rear/front registration for multifeeder pick-up may be adjusted using the screw on the slide
guide. For details, see II. "Standards and Adjustments."
n Detecting the Length
The length of paper is detected in reference to the period of time during which the pre-
registration sensor (PS4) remains on. The maximum paper length is identified by 432 x 279
mm (11" x 17").
Slide guide (rear)
3. Sequence of Operations (A4, 2 copies)
Multifeeder holding plate
releasing solenoid (SL3)
Multifeeder pick-up
clutch (CL2)
Pre-registration roller
sensor (PS4)
Registration roller
clutch (CL1)
Main motor (M1)
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COPYRIGHT © 1999 CANON INC. CANON imageRUNNER 400/330 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Variable resistor
Figure 7-127-2
Copy Start key ON
INTR
Figure 7-127-3
Multifeeder tray
Slide guide (front)
SCFW
SCRV SCFW