Konica Minolta bizhub C658 Service Manual page 1986

bizhub C658/C558/C458/C368/C308/C258
[1] Document reading glass cleaning brush
[3] Document reading glass cleaning motor (M6)
[5] Document reading glass cleaning roller (cleaning
position)
(2) DF original glass cleaning operation
Condition
Predrive Power ON
Exiting from sleep
Start key ON Before starting reading
During reading
After completing reading
last original
(a) *1: Despeckle mode setting screen
[2]
[3]
[1]
[4]
Rotates the document reading glass cleaning brush one complete turn to check for its
correct operation. (forward rotation)
Rotates the document reading glass cleaning brush one complete turn to perform cleaning.
(forward rotation: default setting)
Rotates the document reading glass cleaning brush one complete turn to perform cleaning
for every two originals during continuous reading of originals. (forward rotation)
Rotates the document reading glass cleaning brush three complete turns to perform
cleaning for each original during continuous reading of originals, if [Original Settings] ->
[Despeckle] *1 is selected. (forward rotation)
Because the document reading glass cleaning brush is rotated three complete turns to
perform the cleaning, however, the original-to-original distance is widened than at normal
timing. This results in reduced productivity in reading the originals.
No original glass cleaning sequence is performed between originals during continuous
reading of originals, if [System2] -> [ADF Scan Glass Contamin. Set.] -> [Feed Cleaning
Settings] -> [0] *2 is selected in the Service Mode.
The document reading glass cleaning brush tends to curl if repeatedly operated in one
direction only, resulting in poor cleaning performance. To straighten the brush, it is rotated
one complete turn in the backward direction when reading of the last original is completed.
(backward rotation)
PC-12
PC THEORY OF OPERATION DF-704 > 3. OPERATION
[1]
[5]
[6]
[2] Document reading glass cleaning sensor (PS13)
[4] Document reading glass cleaning roller (home position)
[6] DF original glass
Cleaning operation