Olympus BHT-111 Gebruiksaanwijzing - Pagina 19
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table below as pointers for
full performance from your microscope, please consult with the
troubleshooting.
Phenomenon
Cause
Remedy
1. Optical System
a) With illuminat or s wit ched
o n, th e field of view is
da rk .
Fiel d iris d ia ph rag m i s n ot
opened sufficiently.
Open diaphragm to proper
diameter.
Condenser is lowered too
m u c h .
Adjust condenser height.
Light path selector lever is
pulled o ut to C po siti on .
Push in lever up to CV or V
p osit ion .
b) Field of view is cut off or
i I l um inated irr egularly .
Light path selector lever is
stopped midway.
Cti ck i t in to p rop er p osit io n
according to your purpose.
Nosepiece is not clicked into
place.
Slightly rotate nosepiece until
i t cli cks i nto p la ce.
Nosepiece is not correctly
mo un ted .
Insert nosepiece dovetail into
microscope frame all the way,
th en l ock.
The power of objective used
exce ed s the i ll umin at io n ca-
pacity of condenser.
Choose a condenser to meet
your purpose.
Condenser is not centered. Center condenser.
Fie ld i ris di ap hrag m i s stop pe d
down excessively.
Open diaphragm to proper
diameter.
c ) Dus t or dirt is v isible in
the f ield of view.
Dust, etc. on light exit lens. Remove dust, etc.
Clean front lenses.
Dust on condenser top lens.
Dirty specimen.
Dust on eyepiece.
d) Excessive image contrast.
Condenser is lowered too
m u c h .
Adjust condenser height.
Aperture iris diaphragm is
stopped down excessively.
Open diaphragrn to proper
diameter.
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