Controlling The Cleaning Belt Drive Mechanism - Canon GP605 Service Manual

CHAPTER 8 FIXING SYSTEM
C.

Controlling the Cleaning Belt Drive Mechanism

Figure 8-203 shows the construction of the control system used to control the cleaning belt
drive mechanism.
Length Detection 1
When the cleaning belt length detecting flag comes into contact with the cut-off (300 mm from
the end of the cleaning belt), the cleaning belt length warning sensor (PS8) detects the flag,
causing the message "Web Running Out" on the control panel. (Copying may continue.)
Cleaning belt
roller (feed side)
J508B
0V
1
WEB-LESS
2
5V
3
0V
4
WEB-WARN
5
5V
6
20
Figure 8-203 Construction of the Control System
8-8
COPYRIGHT © 1999 CANON INC.
Cleaning belt
length detecting flag
To PS7
To PS8
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Cleaning belt absent
sensor (PS7)
Length detection 2
If copying continues after detection by
PS8, the flag moves farther down,
causing error code E005 upon
detection by the cleaning belt length
sensor (PS7).
(front)
Cleaning belt length
warning sensor (PS8)