Ricoh PRIPORT VT 2000 Series Service Manual page 229

28 February '91
3.1.5 Reading Start Position Adjustment (In The Main Scan Direction)
[A]
[B]
Purpose: To align the center of the original with the center of the CCD so that
the center of original image is positioned in the center on the
master.
1. Open the scanner unit [A].
2. 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].
3. Close the scanner unit [B].
4. Press the Print Start key to turn on the fluorescent lamp and feed the test
chart.
5. 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'").
6. If incorrect, loosen the mounting screws [D] of the CCD board [E] and
adjust the CCD horizontal position.
7. After adjustment, retighten the mounting screws.
Test Chart R-21
Center Line
[B]
Line [C]
L
5-16
[E]
L'
L = L'
[C]
[D]