Ricoh C211 Service Manual page 128

3.1.5 Reading Start Position Adjustment (In The Main Scan Direction)
7
\
rnl Center Line A A
/ II 1~1 /
d
—
r
EZ"I
"''\/"
Link [C]
LI
L'
%7
I
L=L'
LUJ
[c]
Purpose: To align the center of the original with the center of the CCD so that
1.
2.
3.
4.
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6.
7.
the center of original image is positioned in the center on the master.
Open the scanner unit [A].
Set the test chart so that the center line, located at the leading edge of the
test chart, is positioned above the original leading edge sensor actuator [B].
Close the scanner unit [B],
Press the Print Start key to turn on the fluorescent lamp and feed the test
chart,
Stop feeding the test chart when it is possible to read both lines [C], and
confirm that the above waveform is displayed (The distance "L" is the same
as "L'").
If incorrect, loosen the mounting screws [D] of the CCD board [E] and adjust
the CCD horizontal position.
After adjustment, retighten the mounting screws,
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