Laser Optical Unit - Toshiba e-STUDIO2006 Service Manual

3.9

Laser Optical Unit

3.9.1 General Description
The laser optical unit radiates the laser beam onto the photoconductive drum responding to the digital
image signals transmitted from the MAIN board to create the latent image. Image signal is converted
into the light emission signal of the laser diode on the laser driving PC board (LDRS), then radiated on
the drum through the optical elements such as cylindrical lens, polygonal mirror and f lens.
These parts are adjusted very precisely using specialized equipment, if the adjustment is disrupted they
cannot be readjusted by using a filter. They must also be handled very carefully, because fingerprints,
dirt, or dust on them will distort the image.
[1]
Fig. 3-39
[1] Polygonal motor
e-STUDIO2006/2306/2506/2007/2307/2507/2303A/2303AM/2803AM/2309A/2809A © 2013-2017 TOSHIBA TEC CORPORATION All rights reserved
OUTLINE OF THE MACHINE
3 - 38