Laser Scanning Unit (Lsu); Laser Scanning Unit Overview - Samsung SL-M4080FX Service Manual

2. Product Specifications and Description

2.7. Laser Scanning Unit (LSU)

2.7.1. Laser Scanning Unit Overview

The Laser Scanning Unit (LSU) consists of one polygon motor and one LD (Laser Diode), and forms a latent image on the
surface of OPC drum. For this process, there are a C-DOE lens, F-Theta Lens, reflection mirror (that changes laser beam
path). Also, LD PBA is located to the front of the LSU for interface.
The PD sensor located in LD PBA detects the scanning start line and generates the horizontal sync signal (Hsync).
The picture below shows the main components for LSU.
NOTE
The LSU is the optical precision device. Please handle it carefully and do not remove the cover.
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Information
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Part Code : JC97-04699A [LSU]
2-25
LD PBA
P/Mirror Motor
F- Lens
Reflection Mirror
C-DOE Lens
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