Service manual

AR-651/810 LASER & OPTICAL UNIT 8 - 1
8. LASER & OPTICAL UNIT
8. 1. General Description
The laser optical unit radiates the laser beam onto the photoconductive drum responding to the digital
image signals, which have been sent from the scanner, printer controller, etc., to create a latent image.
The Image signal is converted into the light emission signal of the laser diode on the laser driver board,
and it is radiated on the drum through the optical elements such as cylinder lenses, polygonal mirror and f Ø
lens.
Caution: This unit must not be disassembled in the field since it is finely adjusted and very sensitive to
dust.
[Laser optical unit exterior view]