HP (Hewlett-Packard) CF081A#BGJ Benutzerhandbuch
Power off condition
The DC controller turns off the product with the 24V POWER SUPPLY (24VRMT) signal, 5V POWER
SUPPLY (VC5VOFF) signal, 3V POWER SUPPLY (VC3VOFF) signal, and VOLTAGE CONVERSION
(PWRSAVE) signal.
+5VA and +5VC, are converted into +3.2V, and +3.3VA and supplied during the power off condition.
Fuser control
The fuser-control circuit controls the fuser temperature. The product uses an on-demand fusing method.
Figure 1-6
Fuser components
Fuser control
circuit
Fuser heater
safety circuit
Fuser sleeve
FUSER TEMPERATURE signal
FUSER HEATING
CONTROL signal
Table 1-10
Fuser components
Type of component
Abbreviation Name
Function
Heaters
H1
Fuser heater
Heats the fuser sleeve.
Thermistors
(Contact type)
TH1
Main thermistor
Each thermistor detects the center
temperature of the fuser sleeve.
temperature of the fuser sleeve.
TH2
TH3
Sub thermistor
Each thermistor detects the side
temperature of the fuser heater.
temperature of the fuser heater.
Thermoswitches
(Non-contact type)
TP1
For the fuser heater
Controls the fuser-roller main
heater
heater
ENWW
Engine control system
15