Nikon Eclipse E400 - Page 30

wd
“>. Problem
Cause
+
* .... Countermeasures
Viewing is poor;
details cannot be seen
clearty;
too much contrast;
too little contrast.
The compensation ring on an objective 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.30)
Uneven focus
The revolving nosepiece has not been rotated until
it has clicked into place.
Turn the revolving nosepiece until it clicks into
place.
The specimen is not secured in place on the stage.
Install the specimen properly on the specimen
holder on the stage.
The stage has been installed on a slant.
Install the stage correctly. (p.28)
The revolving nosepiece has not been rotated until
it has clicked into place.
Turn the revolving nosepiece until it clicks into
place.
The specimen is not secured in place on the stage.
Install the specimen properly on the specimen
Image flows holder on the stage.
The condenser is not centered. Center the condenser. (p.27)
The stage has been installed on a slant. Install the stage correctly. (p.28)
An NCB11 filter is not being used. Use the NCBII filter. (p.14)
Image is yellowish
The lamp voltage is too low.
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.15)
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)
Focusing is not possible with
high-power objectives
The specimen is placed upside-down.
Affix 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 specimen is placed upside-down.
Affix the specimen on the stage with the cover
The
objective
strikes
the
glass
facing
up.
(p.15)
specimen
when
switching
The
cover
glass
is
too
thick.
Use
the
specified
type
of
cover
glass
from
a
low-power
objective
.
.
.
a
(thickness:
0.17
mm).
to
a
high-power
objective
The
diopter
adjustment
has
not
been
made.
Perform
the
diopter
adjustment.
(p.14)
The
difference
in
focus
The
diopter
adjustment
has
not
been
made.
Perform
the
diopter
adjustment.
(p.14)
when the objective is
switched is large
33