Sequence Of Basic Operations - Canon 1000 Service Manual

3. OPERATION AND TIMING
D. Sequence of Basic Operations
1. Sequence at Power-On
Power switch ON
Fixing heater (upper/lower)
Transfer belt motor
Transfer charging current
Laser activation
Photosensitive drum motor
Grid bias
Primary charging bias
Developing motor
Developing bias
Original scanner motor
Scanner HP search
• When the fixing temperature reaches 110°C after power-on, the photosensitive drum starts to rotate, and
initial potential control will start when the potential on the drum has become stable (when the drum has
made a 1/2 rotation).
When the fixing temperature reaches 110°C, a transfer belt home position search is executed, at the end
of which image position correction will start.
• The fixing temperature means the surface temperature of the fixing roller (reading of the thermistor
indicated under 'ANALOG' of 'DISPLAY' in service mode).
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COPYRIGHT © 2001 CANON INC.
110ºC
WMUP
Transfer belt HP search
Image correction
Initial potential control
Figure 3-126
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
180ºC
I NTR STBY
Temperature control