High-Voltage Power Supply Circuit - Canon CLBR 460ps Service Manual

CHAPTER 2
C. High-voltage Power Supply Circuit
1. Outline
This circuit applies voltage to the primary charging roller, developing cylinder, primary transfer
roller, secondary transfer roller, ITB cleaning roller, and upper fixing roller according to the
instructions sent from the microcomputer (M-CPU) on the DC controller PCB.
DC voltage or superimposed voltage of AC voltage and DC voltage is applied to the primary
charging roller, developing cylinder, and ITB cleaning roller. Positive or negative DC voltage is
applied to the primary transfer roller and secondary transfer roller. Negative DC voltage is
applied to the upper fixing roller.
Upper
fixing roller
Fixing separation
high-voltage
generation circuit
Primary charging
high-voltage
generation circuit
2 - 20
Developing
cylinder
ITB cleaning roller
Secondary
transfer roller
ITB cleaning
high-voltage
generation circuit
Developing
high-voltage
generation circuit
D-CPU M-CPU
Figure 2-2-13
Primary
charging roller
Primary
transfer roller
Primary transfer
high-voltage
generation circuit
Secondary transfer
high-voltage
generation circuit
High-voltage PCB unit
DC controller PCB