Controlling The Cassette Heater - Canon iR5000 Service Manual

CHAPTER 5 PICK-UP/FEEDING SYSTEM

7. Controlling the Cassette Heater

The system used to control the cassette heater is constructed as follow:
DC power
supply PCB
J4001
2
Power supply
SW3
Environment switch
The following signal has the function indicated:
[1] Cassette Heater Drive Control Signal:
When '1', supplies the AC driver PCB with AC power.
The cassette heater switch (SW4) serves to supply power to the heater
through the AC line or to deprive it of power.
If the environment switch (SW3) is off, the heater will not be supplied with
power through the AC line even if the cassette heater switch (SW4) remains
on.
5-40 P
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DC controller
PCB
J119
J102B
4 3
1
7 12 14
Main
power
1
switch 2
8
SW1
RL1
F05-700-01
COPYRIGHT © 2000 CANON INC.
Cassette
heater switch
SW4
4 3 2 1
J2053
AC driver PCB
J2051
3 2 1
2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000
Cassette heater
H4