Olympus BHTU Manual de instrucciones - Página 19

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VII. TROUBLESHOOTING GUIDE
If you are unable to obtain full performance from your microscope, please consult with the
table below as pointers for troubleshooting.
Phenomenon
Cause
Remedy
1.
Optical System
a) With illuminator switched
Field iris diaphragm
IS
not
Open diaphragm to proper
on, the field of view is
opened sufficiently.
diameter.
dark.
Condenser
is
lowered
too
Adjust condenser height.
much.
Light path
selector
lever is
Push in lever up to CV or V
pulled out to C position.
position.
b)
Field of view is cut off or
Light path
selector
lever is
Click
it
into proper position
illuminated irregularly.
stopped midway.
according to your purpose.
Nosepiece
is not clicked into
Slightly rotate nosepiece until
place.
it
cl icks into place.
The power of objective used
Choose a condenser to meet
exceeds the illu'mination ca-
your purpose.
pacity of condenser.
Condenser is not centered.
Center condenser.
Field irisdjaphragm is stopped
Open
diaphragm to proper
down excessively.
diameter.
c) Dust or dirt is visible
In
Dust, etc. on light exit lens
Remove dust, etc.
the field of view.
Dust on condenser top lens
Clean front tenses.
Dirty specimen
Dust on eyepiece
d) Excessive image contrast
Condenser
is
lowered
too
Adjust condenser height.
much.
Aperture
iris diaphragm
is
Open
diaphragm to proper
stopped down excessively.
diameter.
18