Nikon Eclipse E400 POL - Focus and Image Flow Problems

5.
Troubleshooting
Tables
Problem
ale
Cause
Countermeasure
The
aperture
diaphragm
is
stopped
down
|
Open
the
diaphragm
to
a
suitable
size,
too
far,
(p.19)
Viewing
is
poor
(too
much
or
too
little
contrast,
poor
resolution).
‘The condenser is too low.
Position
the
condenser
so
that
the
image
of
the
field
diaphragm
forms
properly
on
the
specimen,
(p.18)
The
cover
glass
is
too
thick.
Use
the
specified
type
of
cover
glass
There
is
no
cover
glass.
(thickness:
0.17
mm).
There
is
no
oil
on
the
tip
of
an
oil-
immersion
type
of
objective.
Apply
Nikon
immersion
oil.
(p.21)
The
specified
immersion
oil
is
not
being
used.
‘There
are
bubbles
in
the
immersion
oil,
Remove
the
bubbles.
(p.21)
There
is
immersion
oil
on
the
tip
of
a
dry
mtem
өлі)
type of objective.
The
compensation
ring
on an
objective
fitted
with
a
compensation
ring
has
not
been
adjusted.
Adjust
the
compensation
ring
according
10
the
cover
glass.
There
is
dirt
or
dust
on
the
lens,
condenser.
objective
or
specimen.
Clean
the
components.
(p.58)
A
specimen
with
a
cover
glass
is
being
observed
with
an
objective
for
observing
specimens
without
a
cover
glass.
Use
an
objective
that
allows
observation
of
specimens
with
a
cover
glass.
A
specimen
without
a
cover
glass
is
being
observed
with
an
objective
for
observing
specimens
covered
with
a
cover
glass,
Use
an
objective
for
observing
specimens
without
a
cover
glass.
Mark on
the objective
7017:
—
For
observing
a
specimen
with
а cover glass
0:
For
observing
a
specimen
without a cover glass
=
For
observing
either
specimen
with
or
without
a
cover
glass.
Uneven focus.
|
‘The
revolving
nosepiece
has
not
been
rotated
until
it
clicks
into
place.
Tum
the
revolving
nosepiece
until
it
clicks
into
place.
(p.12)
The
specimen
is
not
secured
in
place
on
the
stage.
Install
the
specimen
properly
inthe
|
specimen
clips
on
the
stage.
Image flows.
The
stage
has
been
installed
slanted.
Install
the
stage
correctly
31)
|
The
revolving
nosepiece
has
not
been
Tum
the
revolving
nosepiece
until
it
rotated
until
it
clicks
into
place
clicks
into
place.
(p.12)
The
specimen
is
not
secured
in
place
on
the
stage.
Install
the
specimen
properly
inthe
|
specimen
clips
on
the
stage.
The
condenser
is
not
centered.
Center the condenser.
(p.18)
The
stage
has
been
installed
slanted.
Install
the
stage
correctly.
(p.31)
LES
35