Operation; Scan And Exposure Lamp Control - Olivetti d-Color MF550 Theory Of Operation

7. Scanner section (IR section)
7.3

Operation

7.3.1

Scan and exposure lamp control

A. When the power is ON
1. The exposure unit moves from the scanner standby position to the home position.
2. Exposure unit moves from the home position to the shading position (under the
shading correction sheet) and stops (in scanning direction).
3. The gain value of the CCD sensor output voltage is adjusted for R, G, and B.
4. A shading correction is made.
5. After the adjustment has been made, the exposure unit moves in the return direc-
tion and stops at the home position.
6. The exposure unit moves in the scan direction and stops at the standby position.
Power is ON
Home position
Gain adjustment and
shading correction
20
Shading position
Standby position
Home position
Shading position
Standby position
Theory of Operation
Theory of Operation Ver. 8.0 Jun. 2008
Scanning direction
Returning direction
Scanner movement
Exposure lamp (FL201) ON
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