Cis Glass Contamination Prevention Control - Konica Minolta DF-619 Service Manual

Theory of Operation Ver. 1.0 Jan. 2010
6.3.8

CIS glass contamination prevention control

A. CIS glass cleaning
• The CIS glass is cleaned only when two sides of the original are to be read.
• When the back side cleaning motor is energized, the cleaning brush is rotated to remove
dust and dirt from the surface of the CIS glass.
• Cleaning of the front side takes place at timing different from that of cleaning of the back
side and the cleaning of the back side sources its power drive differently from the front
side.
• The cleaning brush at its home position is detected by the back side cleaning sensor.
• For more details, see "6.3.6 CIS control when the start key is pressed".
CIS module (CIS)
Home position
CIS glass
WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET
Cleaning brush
CIS module (CIS)
Cleaning brush
Back side cleaning motor (M7)
Home position
Back side cleaning sensor (PS9)
During cleaning
Image reading position
Cleaning brush rotation: clockwise
6. OPERATION
A108T2C017DA
A108T2C018DA
21