Nikon Eclipse E400 POL Manual de instrucciones - Página 35
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Countermeasure
Viewing is poor (too much
or too little contrast, poor
resolution).
The aperture diaphragm is stopped down
too far.
Open the diaphragm to a suitable size.
(p.19)
The condenser is too low.
Position the condenser so that the image
of the field diaphragm forms properly on
the specimen.
(p.18)
The cover glass is too thick.
There is no cover glass.
Use the specified type of cover glass
(thickness: 0.17 mm).
There is no oil on the tip of an oil-
immersion type of objective.
Apply Nikon immersion oil.
(p.21)
The specified immersion oil is not being
used.
There are bubbles in the immersion oil.
Remove the bubbles.
(p.21)
i s i
i
il
ti
dry
There is immersion oil on the tip of a
dry
Clean the components.
(p21)
type of objective.
The compensation ring on an objective
fitted with a compensation ring has not
been adjusted.
Adjust the compensation ring according
to the cover glass.
There is dirt or dust on the lens,
condenser, objective or specimen.
Clean the components.
(p.38)
A specimen with a cover glass is being
observed with an objective for observing
specimens without a cover glass.
Use an objective that allows observation
of specimens with a cover glass.
A specimen without a cover glass is being
observed with an objective for observing
Specimens covered with a cover glass.
Use an objective for observing specimens
without a cover glass.
Mark on
the objective
w/0.17:
For observing a specimen with
a cover glass
20/0:
For observing a specimen
without a cover glass
co/—:
For observing either specimen
with or without a cover glass
Uneven focus.
The revolving nosepiece has not been
rotated until it clicks into place.
Tum the revolving nosepiece until it
clicks into place.
(p.12)
The specimen is not secured in place on
the stage.
Instal! the specimen properly in the
specimen clips on the stage.
The stage has been installed slanted.
Install the stage correctly.
(p.31)
Image flows.
The revolving nosepiece has not been
rotated until it clicks into place.
Tum the revolving nosepiece until it
clicks into place.
(p.12)
The specimen is not secured in place on
the stage.
Install the specimen properly in the
specimen clips on the stage.
The condenser is not centered.
Center the condenser.
(p.18)
The stage has been installed slanted.
Install the stage correctly.
(p.31)
35