7. Scanner section (IR section)
Theory of Operation Ver. 8.0 Jun. 2008
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Composition/Operation
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.
A00JT2C004DA
A00JT2C002AA
Exposure lamp (FL201) ON
Scanner movement
Home position
Shading position
Shading position
Scanning direction
Returning direction
Standby position
Gain adjustment and
shading correction
Standby position
Home position
Power is ON
Theory of Operation Y107522-3
