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7
2) Then observe the specimen with your left eye only through the left eyepiece. If the
specimen is not in focus, turn the diopter ring on the eyepiece tube until a sharp
image is obtained.
3.6 Applying the immersion oil
1) Rotate the objective nosepiece to seat the observing position between the 40X and
100X objectives as shown in
Fig. 6 (a)
.
2)
Place a drop of immersion oil on the slide cover as shown in
Fig. 6 (b)
.
3) Rotate the objective nosepiece to seat the 100X objective to the observing position
until you hear a “click” sound.
4) After observing the specimen, use the lens cleaning paper to clean the 100X objective
lens gently and the specimen in time.
5) If it is hard to clean, you need a little bit alcohol to clean the 100X objective lens and
the specimen.
Caution (important):
When you use the 100X objective to observe the specimen, you have to finish
observing the specimen with the 4X, 10X, 40X objectives.
When you use the 100X objective to observe the specimen, you have to apply the
immersion oil on the top of the slide cover.
When you apply the immersion oil with the 100X objective, do not let the
immersion oil to contact with the dry objective lenses (especially the 40x). If the
immersion oil is on the dry objectives lens, please use the lens cleaning paper to
clean the objectives lens in time. The oil will damage the dry objective lenses.
After observing the specimen with the 100X objective, clean the 100X objective
lens first.
3.7 Adjusting condenser
1) Turn the condenser focus knob to raise or lower the condenser.
2) The condenser is raised when using high magnification objectives and lowered when
using low magnification objectives.
Note:
The centering of the condenser and the light axis
of the objective are factory adjusted. Do not
attempt to re-adjust.
The highest position of the condenser has been
factory adjusted. Do not attempt to re-adjust.
3.8 Adjusting iris aperture diaphragm
Swing the iris diaphragm lever (
Fig.7
) left or right to
adjust the aperture size.
(a)
Fig.6
(b)
(a)
Iris Diaphragm Lever
Fig.7
