Xerox Phaser 3100MFP Service Manual page 210

General Procedures and Information
Laser Exposure
Overview
Figure 1
Laser Unit Layout
A: Laser Diode Unit
B: Polygon Mirror Motor
C: F-theta Lens
D: First Mirror
E: Second Mirror
F: Laser Synchronization Detector
G: Cylindrical Lens
H: Synchronization Detector Lens
J: Shutter
This machine uses a laser diode to produce an electrostatic latent image on the OPC drum. The
laser diode unit converts image data into laser pulses, and the optical components direct these
pulses to the OPC drum.
As a mechanical safety feature, the shutter [J] closes to block the laser beam path whenever the
front door is opened.
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