Olympus BHS-753P Manuale di istruzioni - Pagina 20
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VII. TROUBLESHOOTING
If you are unable to obtain full performance from your microscope, please consult with the
table below as pointers for troubleshooting.
Troubles
Causes
Remedies
Nosepiece
i s
not correctly attached
to stand.
1. Optical System
Insert sliding dovetail mount k t o
stand all the way, until i t stops,
then lock.
Disengage.
Disengage analyzer.
Push in lever up to C.
V.
or
V.
Slightly rotate nosepiece until it
clicks into position.
(a) With illuminator
switched
On,
field of view
cannot be seen.
(b) Field of view is
cut off or illumi-
nated irregularly.
In case of orthoscopic observation,
condenser top lens stays in light
path or stops midway.
Field iris diaphragm is stopped
down excessively.
Bertrand lens is engaged.
Analyzer and polarizer are in "cross
filter,n
position
O j J , ,
Light path selector lever is stopped
midway.
Nosepiece is not click stopped.
Condenser is not correctly mounted
on ring mount.
Test plate is stopped midway.
Swing i t out of light path.
Re-insert condenser all the way.
Push plate all the way until i t clicks.
Open diaphragm fully.
(d) Excessive image
contrast.
(c) Dust or dirt is
visible in field o f
(e) Resolution prob-
lems:
0
Image is not sharp.
0
Insufficient con-
t rast.
o lmage details lack
definition.
Lamp is not correctly attached.
Dust or dirt on glass surface at light
exit on base.
Dust on condenser top lens.
Re-insert lamp correctly.
Clean off dust or dirt.
Objective is not correctly position-
Slightly rotate nosepiece until it
ed in light path.
clicks into position.
Dirty specimens.
Dust on eyepiece.
Condenser is lower excessively.
Aperture iris diaphragm i s stopped
down excessively.
Nosepiece is not correctly attached.
I
Dirt on objective front lens.
I
Clean objective.
1
Raise condenser.
Open diaphragm.
Insert sliding dovetail mount all
the way, until it stops, then lock.
Immersion objective i$ used with-
Apply immersion oil.
out immersion oil.
Specimen is not properly illumi-
Adjust illumination.
nated.
Bubbles in immersion oil.
Olympus designated oil is not used.
Dirty specimen.
Dirt on condenser lens.
Remove bubbles.
Use designated oil.
Clean.