3. Focusing (MTF)
•
Place the 8 line/mm test pattern on the exposure glass.
•
Loosen the lens securing screw [A] (Allen screw).
•
Move the lens [B] back and forth until B is maximized (see the diagram
on the right).
•
Tighten the lens securing screw.
4. Reduction Rate
•
Place the 8 line/mm test pattern on the exposure glass.
•
Loosen the lens block securing screws [A].
•
Move the lens block [B] back and forth until the signal has 8 or fewer
crosspoints.
•
Tighten the lens block securing screws.
Note: Tighten each screw little by little alternately.
[A]
[B]
0.2 V
0.5 ms
B
A
[B]
[A]
0.2 V
0.5 ms
1
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November 30th, 1991
REPLACEMENT AND ADJUSTMENT
SCANNER
5-8
Summary of Contents for FAX500
Page 1: ...FAX550 SERVICE MANUAL...
