Oki OKIFAX OF-38, Field Service Manual

Page: 181 / 284

5.2.3.4 Fine adjustment of focus
Procedures:
Set the thin stripes pattern on the test chart to the reading position of the
sensor.
Thin stripes patter”
Fig. 5.2.16 Thin stripes pattern on test chart
Move the lens back and forth until a sensor output waveform appears somewhat
.
like that shown in with large symmetrical circles. Then tighten the
lens lock screw (Figure 5.2.18).
Note
Adhesive paste should be administered after having made the above
adjustment.
Maximize
Fig. 5.2.17 Fine focus adjustment output waveform
Lens
Lock
Fig. 5.2.18 Fine adjustment of focus