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7 Trouble shooting
.
Trouble
Cause
Remedy
1.Double images
Interpupillary distance is not
correct
Adjust the interpupillary
distance
Diopter
adjustment
is
not
correct
Adjust the diopter
Left and right eyepieces are
different magnifications.
Mount eyepieces of the
same magnification
2.Dirt appears in the field of
view
Dirt on the specimen
Clean the specimen
Dirt on the surface of eyepiece
Clean the surface
3.Image is not clear
Dirt on the surface of the
objective
Clean the objective
4.Image is not clear while
adjusting the focus
Diopter
adjustment
is
not
correct
Adjust the diopter
Focus is not correct
Adjust the focus
5.The focusing knob does not
turn smoothly
The focusing knob is too tight
Loosen it to a suitable
position
6.The
image
is
obscure
because of the head is
slipping down by during
observation
The focusing knob is too loose
Tighten it to a suitable
position
8.Eyes feel tired easily
Diopter
adjustment
is
not
correct
Adjust the diopter
Brightness of light is not correct
Adjust the brightness
The bulb was not inserted
correctly
Insert it correctly
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