Fuji Xerox Phaser 5500 User Manual

2-22 Phaser 5500 Printer Service Manual
Fuser Life Expectancy
The life expectancy of the Fuser is 300,000 Letter/A4 size pages. Several factors can
reduce Fuser life:
■ Greater than 5% coverage
■ Paper use larger than letter size
■ Printing on heavy media
■ Printing short-edge feed
■ Printing on transparencies or specialty media
Heater Rods The Heater Rods are quartz glass tubes containing heater coils.
The Main Heater Rod heats the entire length of the Heat Roller,
and the Dual Sub-Heater Rods heat the center portion of the
Heat Roller.
Temperature Sensors These are Thermistors having a known value of resistance that
varies with temperature. There are three Temperature Sensors
in the Fuser. One is located at the center of Heat Roller, the
other is located where the edge of a letter size sheet of paper
comes through. The third is located at the center of the Pressure
Roller. The sensors monitor the surface temperature of the Heat
and Pressure Rollers.
Thermostat The Thermostat provides a second-level of protection. If the
Heat Roll temperature exceeds the preset temperature, the
Thermostat cuts off the AC power to the Heater Rods.
Heat-Roller Fingers The fingers peel the leading edge of the paper from the Heat
Roller.
Heat-Roller Diode This diode discharges negative charge on the Heat Roller that
may deteriorate the toner image on the paper during fixing.
Fuser Exit Sensor This sensor detects the arrival of the paper at the exit area
behind the Fuser. When paper is present, the signal /EXIT is
Low.
Fuser Components (Continued)
Component Function

Fuji Xerox Phaser 5500 Specifications

General

Brand	Fuji Xerox
Model	Phaser 5500
Category	Printer
Language	English