Canon PC400 Service Manual - Page 100
A, Thermistor signal 1 TH1
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CHAPTER 6 FIXING SYSTEM Relay RL101 NO 5V COM Thermal fuse (228°C) FU2 Relay drive command (RELAYD) 5V 5V Fixing heater overheating sensor circuit 5V +- 5V - + TH1 Microprocessor Fixing heater H1 Fixing heater temperature sensor Thermistor signal 1 (TH1) 5V Fixing heater drive command (HTRD) DC controller/DC power supply PCB Figure 6-101A Fixing film Fixing heater Delivery roller M1 Main motor Pressure roller Figure 6-102A 6-2 COPYRIGHT © 1998 CANON INC. CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
COPYRIGHT © 1998 CANON INC.
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
6-2
CHAPTER 6 FIXING SYSTEM
Figure 6-101A
Relay
RL101
NO
COM
5V
5V
Relay drive command
(RELAYD)
Fixing heater
overheating
sensor circuit
5V
5V
5V
5V
Fixing heater
drive command
(HTRD)
DC controller/DC power supply PCB
Microprocessor
Thermistor signal 1 (TH1)
Fixing heater
temperature
sensor
Thermal fuse
(228
°
C)
FU2
Fixing heater
H1
TH1
-
-
+
+
Delivery roller
Pressure roller
Fixing heater
Fixing film
Main motor
M1
Figure 6-102A