Image Formation System; Outline - Canon NP6621 Service Manual

III. IMAGE FORMATION
SYSTEM
A. Outline
The machine's image formation system con-
sists of the following:
AE sensor
DC controller
PCB
Q301
Microprocessor
COPYRIGHT © 1998 CANON INC.
Copyboard
Scanning lamp
Composite power
supply
Scanning lamp
ON control circuit
Microprocessor
Figure 3-301
CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
• Controls the scanning lamp.
• Controls the primary charging.
• Controls the transfer charging.
• Controls the separation static eliminator.
• Controls the developing bias.
• Controls the blank exposure lamp.
Lens
Blank exposure
unit
Primary
charging
roller
Static
eliminator
High-voltage
circuit
T1
T2
T5
OPERATIONS AND TIMING
Developing cylinder
Transfer
roller
3–35