Canon 1000 Service Manual page 225

3. Driving the Fixing Cleaning Web
a. Upper Fixing Web
The upper fixing web used to clean the upper fixing roller is taken up by 0.45 mm when the upper fixing
web take-up solenoid (SL3) turns on and off.
The upper fixing web take-up solenoid turns on once for each eight sheets of paper.
The edge of the web is given a cut for identification of its remaining length.
When the web is taken up to the cut, the arm, which has been supported by the web, falls through the cut
to be detected by the web length sensor (S36).
An alert message will be indicated on the control panel when the sensor detects the sensor arm.
The upper web moves away from the upper fixing roller when the upper fixing web releasing solenoid
(SL4) tuns on.
b. Lower Fixing Web
The lower fixing web is used to clean the lower fixing roller by the drive of the lower fixing web motor
(M30).
The lower fixing web motor takes up the lower fixing web by 0.05 mm for each sheet of paper.
The dirt that remained after cleaning by the web is scraped by the lower fixing blade of a spring pressure
type.
The lower fixing web is not equipped with a mechanism that can detect its remaining length.
Upper fixing web
Sensor arm
Figure 3-648
COPYRIGHT © 2001 CANON INC.
(copier front)
Web length sensor (PS36)
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. OPERATION AND TIMING
1. 'E005' will be indicated when the
upper fixing web take-up sole
noid turns on and off about 270
times after the message NO
WEB is indicated on the control
panel.
2. The web is 5 m long, and the cut
is found at a point 4.7m from its
leading edge.
3. When you have replaced the up
per fixing web, be sure to ex
ecute 'E005-RLS' under 'FUSER'
of 'FUNC' in service mode, and
turn off and then on the power
switch.
3-181