Canon GP405 Service Manual page 163

I. OUTLINE OF OPERATIONS
A. Outline
The machine's pick-up/feeding system consists of the upper/lower cassette and the multifeeder,
and it uses a center reference method, in which paper is moved in the middle of the pick-up path.
Paper picked up from the cassette or the multifeeder is controlled by the registration roller so
that its leading edge matches the image on the photosensitive drum, and is sent to the copy tray
through the transfer, separation, feeding, and fixing assemblies.
As many as 13 sensors are used to monitor the movement of paper, and 11 sensors are used to
detect jams.
Figure 7-101 shows the arrangement of sensors (input parts), while Figure 7-102 shows
clutches and solenoids (output parts). (These figures are conceptual diagrams, and omit the cassette
drive system.)
Notation
PS3 Multifeeder paper sensor
PS4 Pre-registration paper sensor
PS6 Reversal assembly inlet sensor
PS7 Delivery sensor
PS8 Duplexing assembly inlet paper
sensor
PS9 Re-pick up paper sensor
PS10 Horizontal registration sensor
PS11 Vertical path paper sensor
PS18 Pick-up sensor 1
PS19 Pick-up sensor 2
PS40 Fixing assembly outlet sensor
Q1604 Cassette 1 paper sensor
Q1605 Cassette 2 paper sensor
* Pin No. of the signal line on the DC controller PCB.
Table 7-101 Sensors in the Pick-Up/Feeding System
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Name
CHAPTER 7 PICK-UP/FEEDING SYSTEM
Signal
PS3S J108-B17
PS4S J108-B11
PS6S J106-2
PS7S J107-2
PS8S J114-B2
PS9S J114-B5
PS10S J114-B8
PS11S J108-B8
PS18S J108-A17
PS19S J108-A18
PS40S J114-A2
UCSPD J108-A10
LCSPD J108-A11
Pin No.*
7-1