Ricoh C211 Service Manual page 556

1-5. Adjusting The Reduction Ratio (Moire Adjustment)
—
L
Cross points must be less than 8.
. : Upper cross pointss 8 --- SS830
Upper cross points = 6 ---
ss950
and
A :
Lower cross points 58--- SS830
Lower cross points 56 ---
SSWO
Purpose : To adjust the focus (to set distance between the lens and the original)
Method : 1.
2.
3.
4.
5.
Position the test chart so that the area containing 8 lines/mm on the
chart can be read.
test
Press the Print Start key (Start key: SS830) to turn on the fluorescent lamp.
At the same time, confirm that the wave form is similar to the above
il-
Iustration.
If incorrect, loosen the mounting screws [A] and adjusl
position as indicated by the arrows.
After adjustment, retighten the mounting screw [A].
the lens block [B]
5-17