Ricoh VT3500, Service Manual

Page: 245 / 330

3.2 ADJUSTING THE REDUCTION RATIO (MOIRE
ADJUSTMENT)
Purpose: To adjust the focus (to set distance between the lens and the
original).
Adjustment Standard: There must be 32 cross points or less.
1. Position the resolution chart so that the area containing 200 dpi on the
test chart can be read.
2. Press the Print Start key to turn on the fluorescent lamp.
3. At the same time, check if the waveform looks like the one in the
illustration above.
4. If it does not, loosen the mounting screws [A] and adjust the position of
the lens block [B] as indicated by the arrows.
5. After the adjustment, retighten the mounting screw [A].
[B]
[A]
Cross Points
Cross points must be less than 33.
1 December 1993
5-11