Laser Optical Unit - Toshiba e-STUDIO 5540C Service Manual

3.10 Laser Optical Unit

3.10.1 General Description
The laser optical unit radiates the laser beam onto the photoconductive drum responding to the digital
image signals transmitted from the scanner, USB, network, etc. to create the latent image. The image
signal is converted into the light emission signal of the laser diode on the laser driving PC board (LDR),
then radiated on the drum through the optical elements such as polygonal mirror (polygonal motor) and
lens.The unit must not be disassembled in the field as they are very sensitive to dust and finely
adjusted at the factory.
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[1] Shutter
[2] Shutter sensor (end position)
[3] Shutter sensor (home position)
[4] Shutter motor
[5] Laser optical unit
[6] Slit glass-Y
[7] Slit glass-M
[8] Slit glass-C
[9] Slit glass-K
[10] Polygonal motor
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
OUTLINE OF THE MACHINE
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Fig. 3-38
3 - 66
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