Aidc Sensor - Minolta CF910 Service Manual

154SBM1105A

11-5. AIDC Sensor

• AIDC Sensor of a reflector type converts the amount of toner attracted to the surface of
the PC Drum and the PC Drum background level to corresponding voltage values which
are in turn used for γ correction control of the image stabilization system.
• UN20 is mounted on top of the Developing Unit.
Amount of Toner
Attracted
• The UN20 output voltage is applied to pin 2B of PJ7I on Master Board PWB-I for the
detection of the amount of toner attracted.
Output GND
PC Drum
Surface
Reflected Light
Large
Small
LED Power
Supply
1136M068AA
Intensity
Low
High
M-58
Output
Low
High