Xerox Phaser 6125

2-24 Phaser 6125/6130 Color Laser Printer Service Manual
Theory of Operation
Fuser
The Fuser fixes transferred toner onto the paper using heat and pressure and
feeds the paper before and after toner is fixed. The Fuser consists of the
following components: Heat Roller, Heater Lamp, Thermostat, Temperature
Sensor, Pressure Belt, Exit Roller, and Exit Sensor.
■ Exit Sensor
The Exit Sensor detects passage of printed pages after fusing on the
Actuator’s position changes.
Laser Unit
The Laser Unit is an exposure unit that generates laser beams to form an
electrostatic latent image on the drum surface. The Laser Unit consists of the
following components: Laser Diode (LD) Board, Scanner Assembly, Start of
Scan (SOS) Board, Lenses, Mirrors, and Windows.
Windows
Laser Unit
s6130-020
Front
Laser Diode
Board
Polygon Mirror
Scanner
SOS Board
Lens
Lens
Mirror
Mirror
Mirror
Mirror
Rear View
SOS Sensor