Nikon Eclipse E400 User Manual

Troubleshooting Tables
(©)
So
©
Improper
use
of
the
microscope
may
adversely
affect
performance
even
if
the
microscope
does
not
suffer
damage.
If
any
of
the
problems
listed
in
the
table
below
arise,
take
the
countermeasures.
Viewing and control systems
„^^
+ 8
“O, Problem
Cause
(O
e
LA Countermeasures
~+
一
Vignetting of the view field;
the entire view field cannot
be seen;
uneven brightness in the
view field.
The optical path selector on the eyepiece tube is in
an intermediate position.
The optical path selector on the eyepiece tube is
not set 100% to the binocular eyepiece.
Set the optical path selector 100% to the binocular
eyepiece. (p.17)
The revolving nosepiece has not been rotated until
it has clicked into place. (The objective is not in
the optical path.)
Turn the revolving nosepiece until it clicks into
place. (Place the objective in the optical path.)
The condenser is too low.
Position the condenser so that the image of the field
diaphragm forms properly on the specimen. (p.27)
The condenser is not centered. Center the condenser. (p.27)
The condenser is not installed properly. Install the condenser correctly. (p.27)
The filters are not placed in proper position. Correctly place on the field lens. (p.14)
The field diaphragm is stopped down too far. Open the diaphragm to a suitable size. (p.16)
An unsuitable objective and condenser Use a suitable combination. (p.21)
combination is being used.
The lamp is not installed properly. Install the lamp properly. (p.26)
The condenser is too low.
Position the condenser so that the image of the field
diaphragm forms properly on the specimen. (p.27)
Viewing is poor;
details cannot be seen
clearly;
too much contrast;
too little contrast.
Dirt or dust in the view field The aperture diaphragm is stopped down too far. Open the diaphragm to a suitable size. (p.16)
There is dirt or dust on the lens, condenser, Clean the components. (p.30)
eyepiece, filter or specimen.
The aperture diaphragm is stopped down too far. Open the diaphragm to a suitable size. (p.16)
The condenser is too low.
Position the condenser so that the image of the field
diaphragm forms properly on the specimen. (p.27)
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
objective.
The specified immersion oil is not being used.
Apply Nikon immersion oil. (p.21 and 22)
There are bubbles in the immersion oil.
Remove the bubbles. (p.21)
There is immersion oil on the tip of a dry-type
objective.
Clean the components. (p.30)
32

Nikon Eclipse E400 Specifications

General

Brand	Nikon
Model	Eclipse E400
Category	Microscope
Language	English