At Power-On; In Standby - Canon iR C3200 Series Service Manual

Chapter 11

11.3.2.2 At Power-On

The fixing roller is heated by 2 fixing heaters (main heater H1, sub heater H2).
The main heater repeats remaining ON for 3.5 sec and OFF for 1.5 sec until the fixing temperature reaches 190 deg C.
The sub heater, on the other hand, remains ON throughout.
The pressure roller is kept warm by the heat retaining heater (which remains ON throughout).
The fixing motor starts to rotate when the temperature of the fixing roller reaches 90 deg C.
It keeps rotating for a further 300 sec after the temperature of the fixing roller reaches 190 deg C (warm-up state; so
as to maintain the temperature of the pressure roller; the machine accepts a print job during this period).
Fixing main heater
(H1)
Fixing sub heater
(H2)
Fixing heat retain-
ing heater (H3)
Fixing motor
(M24)
*1: The main thermistor (TH1) or the sub thermistor (TH2) performs temperature control (to 190˚C)
according to the reading of the main sub heater or the sub heater.

11.3.2.3 In Standby

The machine controls the fixing roller (to 190 deg C) according to the reading of the non-contact thermistor TH1 or
sub thermistor TH2.
If the reading of the main thermistor is assumed to be Th1 and that of the sub thermistor is assumed to be Th2,
if Th1 > Th2, the temperature control will be by the sub heater.
if Th1 <= Th2, the temperature control will be by the main heater.
The temperature of the pressure roller is controlled by the heat retaining heater, which repeatedly remains on for 480
sec and, thereafter, remainsON for 4.2 sec and OFF for 1.6 sec.
11-10
Main power
switch ON
WMUP
Repeats ON for 3.5 sec
and OFF for 1.5 sec.
360sec
90˚C
F-11-9
Starts here if the surface temperature
of the fixing roller is 90˚C or more when
the main power switch is turned on.
WMUPR PSTBY
*1
190˚C
*1
300 sec
Rotates idly for 300 sec
after the drum ITB motor stops.
0000-5022
0000-5023