Konica Minolta bizhub C658 Service Manual page 1990

bizhub C658/C558/C458/C368/C308/C258
(c) After the print cycle
1. After the reading sequence, the LEDs are turned OFF.
2. The cleaning brush is turned backward (to tame the brush).
3. The cleaning brush is brought to a stop when its home position is detected.
4. The cleaning brush perform "ADF Scan Glass Contamin. Sensitivity".
• The LEDs are turned ON. The cleaning brush is rotated four complete turns.
• The cleaning brush cleans the CIS glass during its first turn.
• The cleaning brush uses the shading correction surface to perform the shading correction during its second and third turn. The
shading correction is performed (a total of twice).
• The cleaning brush uses the shading correction surface to perform "ADF Scan Glass Contamin. Sensitivity" during its fourth turn.
• The cleaning brush is brought to a stop at its home position.
• The LEDs are turned OFF.
NOTE
▪ Steps of 4 is not performed if
Glass Contamin. Sensitivity] -> [Not Set]
3.4.5 CIS glass contamination prevention control
(1) 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 CIS cleaning sensor.
• For details, see " PC.3.4.4 CIS control when the start key is
[1]
[2]
[3]
[1] Cleaning brush
[3] CIS cleaning sensor (PS7)
3.4.6 CIS cover
• During a misfeed clearing procedure, the CIS cover can be opened by releasing the lever.
• The CIS cover sensor is unblocked when the lever is released.
[2]
[3]
[4]
[Service Mode] -> [System 2] -> [ADF Scan Glass Contamin. Set.] -> [Back Side] -> [ADF Scan
is selected
[4]
[1]
PC THEORY OF OPERATION DF-704 > 3. OPERATION
pressed".
[2] CIS cleaning motor (M5)
[4] CIS module (CIS)
PC-16