VIII
Troubleshooting Tables
1
Optical
45
VIII
Troubles Causes
Corrective
Measures
Condenser position too low or
too high.
Position the condenser slightly
lower than the upper limit. (P. 38)
Aperture diaphragm closed too
far.
Open properly. (P. 21)
Dirt or dust in the viewfield.
Dirt or dust on the lens
(condenser, objective, field lens,
eyepiece, specimen).
Clean the lens. (P. 49)
Troubles Causes
Corrective
Measures
Condenser position too low.
Position the condenser slightly
lower than the upper limit. (P. 38)
Cover glass too thick or thin.
Use a cover glass of the
specified thickness (0.17 mm).
Slide upside down.
Turn over the slide so that the
cover glass faces up.
No cover glass attached to the
slide.
Attach a cover glass 0.17 mm
thick.
No immersion oil used on the
front lens of the oil-immersion
objective.
Apply Nikon immersion oil to the
objective. (P. 31)
Nikon immersion oil is not used
for oil-immersion observation.
Use Nikon immersion oil. (P. 31)
Air bubbles in immersion oil.
Remove bubbles. (P. 31)
Immersion oil found on dry type
objective (especially 40x
objective).
Clean the objective. (P. 31)
Aperture diaphragm closed too
far.
Close or open properly. (P. 21)
Correction ring on the objective
not adjusted. (Only for the
objective with correction ring.)
Adjust to match the thickness of
the cover-glass.
Dirt or dust on the lens
(condenser, objective, field lens,
eyepiece, specimen).
Clean the lens. (P. 49)
Poor image quality (low
resolution, contrast too low
or too high)
Objective for covered specimen
is used to observe no-covered
specimen.
Use no-cover-glass objective.
Note:Indication on the objective
∞
/0.17
:
for covered specimen
∞
/0
:
for no-covered specimen
∞
/–
:for covered and
no-covered specimen
Содержание ECLIPSE E200 POL
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