Df Original Glass Contamination Prevention Control - Konica Minolta DF-619 Service Manual

6. OPERATION
6.3.3

DF original glass contamination prevention control

A. DF original glass cleaning
• A reading line can occur if the DF original glass is contaminated with dust or dirt. The DF
original glass cleaning mechanism prevents this fault from occurring.
• The cleaning brush rotates to remove dust sticking to the DF original glass.
• The cleaning brush is rotated by the front side cleaning motor.
• The front side cleaning sensor detects the cleaning brush at its home position.
Cleaning brush
DF original glass
Home position
DF original glass
14
Front side cleaning motor (M8)
Rotates forward during cleaning: counterclockwise
Rotates backward when straightening the brush: clockwise
Cleaning brush
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Theory of Operation Ver. 1.0 Jan. 2010
Front side cleaning
sensor (PS18)
Home position
During cleaning
A108T2C011DA
A108T2C012DA