Canon Vizcam 1000, Service Manual

Page: 129 / 840

COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
3-85
3. OPERATION AND TIMING
The following five PCBs are used for supplying high voltage to each high-voltage unit:
1 HVT1
Supplies a DC bias to the transfer blade/internal static eliminating roller.
2 HVT2
Supplies a DC bias to the primary charging system.
3 HVT3
Supplies a DC/AC bias to the developing cylinder.
Supplies a DC bias to the stray toner collection electrode plate.
4 HVT4
Supplies a DC/AC bias to the separation charging unit.
5 HVT5
Supplies a DC bias to the pre-fixing charging unit.
The external static eliminating roller is grounded in relation to the internal static eliminating roller.
For details, see the appropriate pages.
Figure 3-502
HVT2 HVT3
HVT5
HVT4
HVT1
Pre-exposure lamp
External static eliminating roller
Internal static eliminating roller
Pre-primary charging assembly
Pre-fixing charging
assembly
Separation charging assembly
Transfer blade
Transfer belt
DC+AC bias
DC+AC bias
Primary charging assembly
DC bias
DC bias
DC bias
DC bias
Photosensitive drum
Developing cylinder
Stray toner collecting
electrode plate