Olympus BHT Instrukcja obsługi - Strona 19
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VII. TROUBLESHOOTING
If you are unable t o obtain full performance from your microscope, please consult with the
table below a s pointers for troubleshooting.
I
Phenomenon
Cause
Remedy
I
1. Optical System
I
I
a) With illuminator switched
I
Field iris diaphragm is not
I
Open diaphragm to proper
on, the field o f view is
dark.
b) Field of view is cut o f f or
illuminated irregularly.
1
mounted.
pulled out to C position.
Light path selector lever is
place.
Nosepiece is not correctly
I
microscope frame all the way,
position.
Click i t into proper position
stopped m idway.
Nosepiece is not clicked into
i t clicks into place.
Insert nosepiece dovetail into
1
I
then lock.
according to your purpose.
Slightly rotate nosepiece until
1
Condenser is not centered.
(
Center condenser.
I
The power of objective used
exceeds the illumination ca-
pacity of condenser.
Field iris diaphragm is stopped
Open diaphragm to proper
down excessively.
diameter.
Choose a condenser to meet
your purpose.
c) Dust or dirt is visible in
Remove dust, etc.
the field of view.
'lean front lenses.
1
Dirty specimen.
I
I
~ u s t on eyepiece.
I
d) Excessive image contrast.
Condenser
is lowered too
Adjust condenser height.
much.
1
Aperture
iris diaphragm is
stopped down excessively.
Open diaphragm to proper
diameter.