11-1.Laser Exposure Process - Minolta Di152 Service Manual

11-1. Laser Exposure Process
1. The Start key is pressed.
2. The laser diode is forced to turn ON and the laser intensity is automatically adjusted.
3. The SOS Sensor Board is illuminated by the laser beam, which generates an SOS sig-
nal.
4. The SOS signal determines the laser emission timing for each main scanning line.
5. The surface of the PC Drum is illuminated by the laser beam corresponding to the
image data, which forms an electrostatic latent image.
Polygon Motor M2
LD Board PWB-B
SOS Board
PC Drum
D
A to B: LD activation
B to C: LD OFF
C to D: Laser beam exposure area according to the image data
Elevtrical Component
M2
C
Control Signal
PWB-A PJ13A-3
M-19
SOS Mirror
SOS
SOS Mirror
Sensor
B A
ON OFF Wiring Diagram
L H
PC Drum
4021M016AA
SOS Signal
1171M038AA
8-D