2-24 Phaser 4500/4510 Service Manual
Theory of Operation
Fuser Warm-Up
The halogen lamp is turned on when the fuser warm-up begins. When the
surface temperature of the heat roller (detected by the thermistor) reaches the
fuser control temperature (standby temperature), the fuser warm-up is ended.
Fuser Temperature Cycling
The fuser temperature does not remain at a single, constant value, but varies
within a temperature range. There are several ranges, which are summarized
in the table. Except for Standby, the setting is determined by the media type
selection.
Phaser 4500 Fuser Cycling Temperatures
Setting
Temperature
Standby Lamp ON 180° C
Lamp OFF 185° C
Medium 1-100 pages:
Lamp ON 205° C
Lamp OFF 206° C
101-120 pages:
Lamp ON 205° C
Temp. decreases
by.25° C per page
120 + pages:
Lamp ON 200° C
Lamp OFF 201° C
High Lamp ON 210° C
Lamp OFF 211° C
Extra High Lamp ON 215° C
Lamp OFF 216° C
Low Lamp ON 185° C
Lamp OFF 186° C
Phaser 4510 Fuser Cycling Temperatures
Setting
Temperature
Standby Lamp ON 180° C
Lamp OFF 185° C
Low 1-50 pages:
Lamp ON 190° C
Lamp OFF 191° C
51-62 pages:
Lamp ON 190° C
Temp. decreases by
.25° C per page
63 + pages:
Lamp ON 187° C
Lamp OFF 188° C
Medium 1-50 pages:
Lamp ON 210° C
Lamp OFF 211° C
51-70 pages:
Lamp ON 210° C
Temp. decreases by
.25° C per page
71 + pages:
Lamp ON 205° C
Lamp OFF 206° C
High Lamp ON 212° C
Lamp OFF 213° C
Very High Lamp ON 214° C
Lamp OFF 215° C
Extra High Lamp ON 187° C
Lamp OFF 188° C
Very Low Lamp ON 185° C
Lamp OFF 186° C