49
Troubleshooting
5
Improper use of the microscope may adversely affect performance, even if the microscope is
not damaged. If any of the problems listed in the table below arise, take the countermeasures
indicated.
1
Viewing Problems and Control Problems
Problem Cause Countermeasure
The optical path selector lever on
the eyepiece tube is in an
intermediate position.
The optical path selector lever on
the eyepiece tube is not placed to
the position of 100% distribution
to the binocular part.
Securely move the optical path selector lever to
the position where 100% light goes through the
binocular eyepiece.
The nosepiece is not placed to a
click-stop position. (The objective
is not placed in the optical path).
The clicking level is set to the
weak touch.
Push the slide click release button and slide the
sliding nosepiece to the click-stop position.
The condenser position is too low.
Adjust the condenser focus knob so that the
field diaphragm image is focused on the
specimen surface.
The condenser has not been
centered.
Center the condenser.
The condenser is not attached
correctly.
Install the condenser correctly.
A filter is in an intermediate
position.
Move the filter slider to a click-stop position.
The field diaphragm is stopped
down too far.
Open the diaphragm to a suitable size.
The viewfield is invisible,
vignetted, or uneven in
brightness.
The optical fiber is not attached
correctly.
Install the optical fiber correctly.
The condenser position is too low.
Adjust the condenser focus knob so that the
field diaphragm image is focused on the
specimen surface.
The aperture diaphragm is
stopped down too far.
Open the diaphragm to a suitable size.
Dirt or dust is seen in the
viewfield.
Dirt or dust exists on the
objective, condenser, eyepieces,
filters, specimen, or optical path.
Clean the components.
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