Laser Synchronizing Detectors - Samsung MultiXpress K4 Series Service Manual

2. Product Specifications and Description

2.7.3. Laser synchronizing detectors

The LSU has the beam detector sensor board (PD PBA). It is located at [A] point and detects the scanning start point.
Main Scan Start Detection
The beam is detected by the PD PBA at the scanning start point and creates the horizontal sync signal(Hsync).
The following diagram shows the data scanning direction.
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