CHAPTER 6 IMAGE FORMATION SYSTEM
B. Controlling the Developing Bias
The developing bias control mechanism has the following items of control:
1. Controlling the developing bias AC component to a constant voltage.
2. Controlling the developing bias DC component to a constant voltage.
Each of the signals is used for the following:
 Controlling the Drive of the Developing Bias PCB
When DBSBY is '1',
The reference voltage generation circuit turns on and the developing bias PCB cooling fan
drive circuit turns on.
Power is supplied to each circuit, and the developing bias PCB cooling fan turns on.
DC driver PCB
COPYRIGHT © 1999 CANON INC.
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Developing bias PCB