Canon GP160, Service Manual

Page: 112 / 797

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 7 PICK-UP/FEEDING SYSTEM
7-2
II. PICK-UP FEEDING OPERATION
A. Overview
The unit’s pick-up feeding system is controlled by the DC controller PCB’s CPU
(IC301). The pick-up feeding system’s rollers are all driven by the main motor (M601) via
the gear and clutch.
The paper picked-up from the paper cassette and multi-feeder is fed to the registra-
tion roller unit by the vertical path roller, which is driven by the vertical path clutch
(CL301). The vertical path clutch (CL301) is controlled by the DC controller PCB’s verti-
cal path clutch drive signal (CL301D). At this time the registration roller is not revolving,
therefore the paper stops moving and a loop formed at the leading edge, and any cor-
rection necessary is made to ensure the paper is not fed at a skew angle. At the desig-
nated time, the DC controller PCB (IC301) turns the registration clutch ON, and by the
main motor’s revolutions being transmitted to the registration roller, paper is fed and
passed through the transfer, separation and fixing/delivery assemblies to the delivery
tray.
Figure 7-201
M601
CL302
CL301
DC controller PCB
J307-6
[1] CL302D*
J307-3
[2] CL301D*
Main motor
[3] MMD*
[1] CL302D*: Registration clutch drive signal
[2] CL301D*: Vertical path roller clutch drive signal
[3] MMD*: Main motor drive signal