Nikon Eclipse E400 POL - Image Quality and Focusing Difficulties; Care and Maintenance

Problem
Cause
Countermeasure
The image is yellowish.
An NCBI filter is not being used.
Use
the
NCBI
filter.
(p.20)
The lamp voltage is too low.
The image is too bright.
The lamp voltage is too high.
Inadequate illumination
(also check the electrical
system problems and
countermeasures)
The lamp voltage is too low.
Push
auto-photo
switch
and
then
adjust
the
brightness
through
the
ND
filter
combination
(p.20
and
21)
The
aperture
diaphragm
is
stopped
down
1oo
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)
Focusing is not possible
with high-power objectives.
The specimen is placed upside-down.
we with the
Set the specimen on the
cover glass facing up.
The cover glass is too thick.
Use the specified type of cover glass
(thickness: 0.17 mm)
The objective strikes the
specimen when changing
from a low-power objective
to a high-power objective.
The specimen is placed upside-down,
Set
the
specimen
on
the
stage
with
the
cover
glass
facing
up.
‘The cover glass is too thick
Use
the
specified
type
of
cover
glass
(thickness:
0.17
mm).
The diopter setting has not been adjusted.
Adjust the diopter setting. (p.17)
The difference in focus is
large when the objective is
changed.
The diopter setting has not been adjusted.
Adjust the diopter setting (p.17)
When viewing through
the binocular eyepiece,
the image does not resolve.
into a single image.
The
interpupillary
distance
has
not
been
adjusted.
Adjust the interpupillary distance. (p.17)
The diopter setting has not been adjusted.
Adjust
the
diopter
setting.
(p.17)
Eye strain develops while
viewing.
The interpupillary distance has not been
adjusted.
Adjust the interpupillary distance. (р.17)
The diopter setting has not been adjusted.
Adjust the diopter setting. (p.17)
The brightness level is not suitable.
Adjust the brightness through the ND
filter
combination.
(p.20)
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