Detecting Jams; Outline - Canon NP6251 Service Manual

CHAPTER 5 PICK-UP/FEEDING SYSTEM
VII. DETECTING JAMS
A. Outline
As many as 17 sensors are arrange as shown in Figure 5-701 to monitor the
movement of copy paper.
The microprocessor reads in the signals coming from each of the sensors at such
times as programmed to identify the presence of a jam. When it finds a jam, it causes all
sheets moving ahead of the jam to be discharged, and stops the machine.
The control panel will offer instructions on how to remove jams after the suspension
of operation.
Delivery paper
deflecting plate
Delivery
assembly
PS10
Copy tray
PS12
PS14
5-46
COPYRIGHT © 1997 CANON INC.
Fixing
assembly
PS47
Feeding assembly
PS52
PS15
Holding tray
assembly
Holding tray feeding assembly
PS9
PS17
Left deck
Figure 5-701
Pre-transfer roller
Registration roller
Photo-
sensitive
drum
PS8
PS49
Right deck
Cassette 3
Cassette 4
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Multifeeder
PS23
Pick-up assembly
functional coverage
PS33
PS36
PS27
PS30
PS24