Olympus CHT Manuel d'instructions - Page 20

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Olympus CHT Manuel d'instructions
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TROUBLESHOOTING GUIDE
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If you are unable to obtain full performance
from
your microscope because of your unfamiliarity, please
consult with tile table below as pointers lor troubleshoot"lng'
"
Troubre
Cause
Remedy
._--
-
1.
Optical system
a)
Field of view is cut off, or
Nosepiece is not
clicked
into place.
Slightly rotate the nosepiece until it
illuminated irregularly.
clicks into position. {po 11)
Condenser
IS
not correctly mounted
AB-insert the condenser all the 'Nay
on the condenser holder,
without t.lt, (p. 7}
Field ids dlaphragm is not centered.
Center it correctly.
(p
11)
FIeld iris dl,mhraglTl is stopped down
Open it properly. (p 12)
too much.
Dust or dirt on objective, eyepiece,
Clean
ch lens or glass.
condenser or light exit glass on micro
scope base
b) Dust or dirt is visible
in
DU$t on the light exit glass on the
1-
the field of view.
croscope base
--
Remove dust or dirt, or clean the spe-
DU5t on the condenser top lens
I
cimen.
Diny specimen
Dusr on eyepiece
c) Excessive irnilge contrast
Condenser is lowered too much,
Raise the condenser. (p.
71
Apenure
iri.s
diaphragm is stopped
Open the diaphragm. (p. 12)
down excessively .
.
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d} Resollllion problems:
Objective is not correctly engaged in
Slightly rotate the nosepiece until it
• Image is not sharp.
the light path.
clicks into posi tion. (p. 11)
• Insufficient contrast
f----
011'1 on the objective front lens
Clean the objective.
• Image details lack
objective is used
Apply immersion oil. (p.13)
definition.
I rnmersion
I,vithout
immersion oil.
Bubbles in the
immer~ior)
oil
Remove bubbles. (p. 13)
Olympus
im
ersion oil is fiat
u~ed.
Use Olympus immersion oil.
Dirty specimen
Clean the specimen, eyepiece or con-
Dust
On
eyepiece or condenser top lens
denser lens.
e} Field of view is partially
Objective is not correctly positioned in
Slightly rotate the nosepiece until it
out of focus.
the light path.
clicks into position. (p. 11}
Specimen
IS
not correctly placed on
Replace it
on
the stage correct 1' , 1 and
the stage.
secure it with the specimen holder or
stage clips. (p.9)
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I) Image is lillted yellowish.
81LtS 111
ter
i~
not engaged.
Engage
blue filter.
(p.8)
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