Driving The Cleaning Belt - Canon NP6330 Service Manual

D. Driving the Cleaning Belt
The cleaning belt used to clean the upper fixing roller is driven by turning on and off
the cleaning belt solenoid (SL4) by causing the cleaning belt solenoid drive command
(CBSD*) generated by the DC controller circuit to go '1' and '0'. The cleaning belt is
taken up about 0.04mm each time the cleaning belt solenoid is turned ON.
The area of contact between the cleaning belt and the upper fixing roller is increased
to improve clearing efficiency by means of a cleaning belt guide plate.
The cleaning belt solenoid (SL4) is turned on as soon as copy paper reaches the
separation sensor (PS10); the number of times the solenoid is turned ON, further, varies
according to the length of copy paper.
Length of copy paper
Less than 216mm
216mm or more
Power switch
ON
WMUP
Fixing main heater (H1)
Fixing sub heater (H2)
Main motor (M1)
Wait indicator
Delivery sensor (PS11)
Cleaning belt solenoid
(SL4)
The DC controller keeps count of the activation of the cleaning belt solenoid, and
issues 'E005' when the count reaches 250,000.
The count can be cleared by resetting the cleaning belt counter ('619' in service
mode; for details, see Chapter 11 "Service Mode.")
COPYRIGHT © 1997 CANON INC.
COPY START key
ON
WMUPR STBY INTR
green
Figure 6-203
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Activation (ON/OFF)
Once
Twice
SCFW SCRV SCFW
red
CHAPTER 6 FIXING SYSTEM
SCRV LSTR STBY
6-7