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5. Troubleshooting
A12.0910
As the performance of microscope can’t play fully due to unfamiliar operations, the table below
can provide some solutions.
5-1 Solutions of A12.0910 Series Biological Microscope Problem
Problem
Cause
Solution
(1) The bulb is bright
but it is dark in the
field of view.
Field diaphragm is not large enough.
Enlarge the field diaphragm.
Condenser is too low.
Adjust the condenser.
Condenser is not centered.
Center the condenser.
Light path selecting pole is in the trinocular
observation position.
Push the light path selecting pole
to
the
binocular
observation
position.
(2) The side of the
field of view is dark
or not even.
The nosepiece is not in the right position.
Turn the nosepiece into the right
position.
Stain or dust has accumulated on the lens
(condenser, objective or eyepieces).
Clean the lens.
(3) Stain or dust is
observed in the field
of view.
Stains have accumulated on the specimen.
Clean the specimen.
Stains have accumulated on the lens.
Clean the lens.
(4) Unclear image
No cover glass on the specimen slide.
Add the cover glass.
The cover glass is not standard.
Use a standard cover glass with
thickness of
δ
0.17mm.
The specimen faces down.
Put the specimen to face up.
The immersion oil has accumulated on the
dry objective.
Clean thoroughly.
The immersion oil is not used for oil
objective.
Use immersion oil.
Air bubble in the immersion.
Get rid of the air bubble.
Use wrong immersion oil.
Use a correct one.
（
Cedar oil
）
The aperture diaphragm is not opened
correctly.
Adjust it.
Stain or dust has accumulated on the lens
of eyepiece.
Clean the lens.
Condenser is too low.
Adjust the condenser.
(5) One side of the
image is dark or the
image moves while
focusing.
The specimen slide is not fixed.
Fix it with clips.
The nosepiece is not in the right position.
Turn the nosepiece into the right
position.
Condenser is not centered.
Center the condenser.
