System Overview
Samsung Electronics
Service Manual
3-5
3.1.5 LSU (Laser Scanner Unit)
The LSU unit is controlled by video controller. It scans the video data received from video controller with laser beam
by using the rotation principle of the polygon mirror to create the latent image on the OPC drum. It is the core part of
LBP.
The OPC drum rotates as the same speed as the paper feeding speed. It creates the /HSYNC signal and sends it
to the engine when the laser beam of the LSU reaches the end of the polygon mirror, and the engine detects the
/HSYNC signal to arrange the vertical line of the image on the paper. After detecting the /HSYNC signal, the image
data is sent to the LSU to arrange the its margin on the paper. The one side of the polygon mirror is one line for
scanning..
OPC Drum
Photo Diode
LD Driver circit
Protector panel
LD(Laser Diode)
Polygon Mirror
Polygon Motor
Motor Driver
Summary of Contents for ML-2510 series
Page 29: ...System Overview Samsung Electronics Service Manual 3 15 3 2 3 5 SPGPv3 Internal Block Diagram ...
Page 103: ...Exploded Views Parts List 7 2 Frame Assembly 0 15 13 12 4 14 3 2 16 5 7 6 16 1 9 11 10 8 ...
Page 106: ...Exploded Views Parts List 7 5 RX_Drive 0 6 3 4 9 10 8 7 11 2 5 ...
Page 115: ...Service Manual Block diagram 8 2 Samsung Electronics 8 2 ML 2570 2571N H W Block Diagram ...
Page 117: ...Service Manual Connection Diagram 9 2 9 2 ML 2570 2571N Connection Diagram ...