Phaser 6125/6130 Color Laser Printer Service Manual 2-5
Theory of Operation
Exposure
Four laser diodes (one for each color) in the Laser Unit emit laser beams. The
beams are directed by mirrors to the rotating polygon mirror attached to the
scanner motor. As the polygon mirror rotates, the beams are directed through
a series of lenses and mirrors to each of the drums, which are scanned by the
beams from end to end in the axial direction.
: Laser beams (Y)
: Laser beams (M)
: Laser beams (C)
: Laser beams (K)
s6xxx-003
Front
Drum (K)
Drum (C)
Drum (M)
Drum (Y)
Polygon Mirror
Mirror
Mirror
Lens
Mirror
Mirror
Mirror
Lens
Mirror
Lens
Mirror
Lens
Mirror
Mirror
Lens
Laser Diode
Board
Polygon Mirror
Scanner
SOS Board
Lens
Lens
Mirror
Mirror
Mirro
r
Mirror
Rear View
SOS Sensor