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VI, TROUBLESHOOTING
Failures
Causes
Actions
Position correctly so the
Position of condenser too low,
vlewfleld diaphragm
Image is formed,
(p,22)
Dirt or dust in
Aperture diaphragm too restricted.
Open properly.
(p.23)
the viewfield,
Dirt or dust on the lens (field lens,
condenser, objective, eyepiece,
Cleaning.
(p.ii)
eyepiece tube entrance lens) or
specimen.
Aperture diaphragm too restricted.
Open properly.
(p.23)
Position correctly so the
Position of condenser too low.
vlewfleld diaphragm
image is formed.
(p.22)
Too thick or thin coverglass.
Use specified thickness
No coverglass attached.
(0.1 7mm) coverglass.
NCG objective for observing
Use normal objective for
specimen without coverglass used
observing specimen with
to observe specimen with
coverglas,s.
coverglass.
Poor image
Normal objective for observing
obtained
specimen with coverglass used to
Use NCG objective
(Contrast is too
observe specimen without
strong or too
coverglass.
weak,)
No immerSion oil used on the front
(Details are not
of immerSion system objective.
Use Nikon Immersion
clear, )
Immersion
011
used not the type
oil.
(p.26)
specified.
Air bubbles in immerSion
011.
Remove bubbles. (p.26)
Immersion oil sOils the top of dry
Cleaning.
(p.26)
system objective (especially 40 x).
Compensation ring of objective not
Adjust to match
adjusted.
coverglass.
Dirt or dust on the lens (field lens,
condenser, objective, eyepiece,
Cleaning.
eyepiece tube entrance lens) or
specimen.
36
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