Konica Minolta bizhub C250 Service Manual page 53

7. Scanner section (IR section)
B. When the start key is pressed
1. Turning the start key ON will turn the exposure lamp ON (at the front edge of the
image.)
The scanner cooling fan motor (M202) will rotate.
2. The exposure unit will move from the home position to the shading position in
scanning direction.
Gain as well as shading will be adjusted at the shading position.
3. The exposure unit will move from the shading position to the front edge of the
image in scanning direction.
4. The exposure unit will move from the front edge to the back edge of the image to
scan.
The exposure unit will start reading the original image from the front edge.
The unit will finish reading the image at the back edge of the image.
5. The exposure lamp will be OFF when the reading is complete.
The scanner cooling fan motor (M202) will stop.
6. The exposure unit moves from the back-edge of the image to the home position
and stops (in returning direction.)
It scans only once even for the multi-copies, since R, G, and B data will all be mem-
orized in one scanning.
Shading position
Home position
Front edge of the image
Shading position
Home position
Gain adjustment
and shading
correction
20
Scan
Return
Front edge of the image
Exposure lamp (FL201) ON
Scan
Return
Theory of operation ver. 3.0 Aug. 2006
Back edge of the image
Back edge of the image
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