6
Issue
Possible cause
Solution
Double images
Interpupillary distance is
not correct
Readjust the eyepieces
Diopter adjustment is not
correct
Readjust the diopter rings
Magnification of each
eyepiece is not the same
Mount eyepieces of the
same magnification
Dirt appears in the field
of view
Dirt on the specimen
Clean the specimen
Dirt on the surfaces of
eyepiece
Clean the surfaces
Image is blurry
Objective surfaces are
dirty
Clean the objective
Diopter adjustment is not
correct
Readjust the diopter
Focus is incorrect
Readjust the focus
The focusing knob is not
smooth
The focusing knob is too
tight
Loosen it to a suitable
position
Head keeps slipping
down
The focusing knob is too
loose
Tighten it to a suitable
position
Eyes fatigue easily
Diopter adjustment is not
correct
Adjust the diopter rings
Illumination does not
work when the switch is
on
No power supply
Check the connection
with the power supply
