CHAPTER 6 FIXING SYSTEM

3 Controlling the Fixing Temperature

3.1 Outline

The fixing temperature is controlled for the following:

[1]Fixing heater temperature

[2]Thermistor error detection

Switch PCB

Main power supply PCB

RelayRL1

+5V

 

Thermal switch

(H1)

(TP1)

 

Fixing main

 

 

mainFixingheater

Fixingsub heater (H2)

thermistor

 

 

 

 

thermistor

 

 

 

TH1

TH2

Fixing sub

DC controller PCB

Heater relay circuit

High-

temperature detection circuit

IC300

A/D converter

(200V)

+5V

IC334

+5V

F06-301-01

6-6 P

COPYRIGHT © 2001 CANON INC.

CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001

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Canon IR2200, IR3300, IR2800 manual Controlling the Fixing Temperature, F06-301-01