Canon iR2200 Service Manual page 286

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
Thermal switch
(TP1)
6-6 P
COPYRIGHT © 2001 CANON INC.
+5V
Fixing main
thermistor
TH1
TH2
Fixing sub
thermistor
F06-301-01
DC controller PCB
High-
temperature
detection
circuit
A/D converter
+5V
+5V
2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
Heater relay circuit
IC300
(200V)
IC334