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S/W Structure and Descriptions
Samsung Electronics
Service Manual
4-3
Input Process Output
Photo Sensor ( intensity
of radiation)
LED PWM Output
density
LED PWM decision
Comparator Threshold
voltage PWM decision
Color Registration measure
Auto Color Registration
pattern printing
Color Registration adjustment
Page Sync. modify
Line Sync. modify
Video Clock Freq.
modify
Density pattern
printing
LSU temperature control
LED
LSU
Video signal
generator
P Sync.
L Sync.
clock
Video data
PWM
Comparator
PWM
SMPS Fan
PWM
Auto color
registration
sensor
LPEC2
ACR module
LSU
ADC
ACR data
H Sync.
LSU
temperat
ure
sensor
ADC
4.6 System F/W Flow