Low-voltage power supply failure
The DC controller determines a low-voltage power supply failure and notifies the formatter when the low-
voltage power supply does not supply +24 V.
Fuser control
The fuser heater-control circuit and the fuser heater safety circuit control the fuser temperature according to
commands from the DC controller.
Figure 1-7 Fuser components
H1
TH2
TH1
TP1
TH3
FUSER TEMPERATURE signal
Pressure roller
FUSER HEATER
CONTROL signal
Fuser sleeve
Fuser heater
control circuit
Fuser heater
safety circuit
DC controller
Low-voltage power
supply unit
Table 1-12 Fuser components
Type of component Abbreviation Name Function
Heaters H1 Fuser heater Heats the fuser sleeve.
Thermistors
(Contact type)
TH1 Main thermistor Detects the center temperature of
the fuser sleeve.
TH2 Sub thermistor 1 Detects the temperature at one end
of the fuser heater.
TH3 Sub thermistor 2
Thermoswitches
(Contact type)
TP1 For the fuser heater Opens in the event of high
temperature fault
ENWW Engine-control system 19
To Next Page
Loading...