Canon iR8500 Service Manual page 156

Component
Laser semiconductor
Laser scanner motor (M4)
Polygon mirror
BD mirror/BD PCB
Laser driver PCB
Laser scanner motor PCB
Driver PCB
COPYRIGHT© 2001 CANON INC.
Description (specifications)
Visible laser light (about 675 nm in wave length, 7 mW in output),
twin laser exposure
DC motor, 2-speed control, rotation at 40000 rpm
8-faceted
Laser beam detection
Laser activation control
Rotation control of the laser scanner motor
T02-601-01
2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
CHAPTER 2 NEW FUNCTIONS
2-101