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6. TROUBLESHOOTING TABLE
If you occasionally suffer a problem. Please refer to the troubleshooting table as below first, which
contains the most frequently encountered problems and the possible causes. If still can not solve the
problem, please contact your local agency or service center for next step of troubleshooting, never
attempt to dismantle or disassembly the instrument without expertise assistances or supports, thanks
for you choosing MOTIC microscope kindly.
6.1 Optical and Operating Problems
Problem Possible
Cause
Vignetting or uneven brightness in the field of
view or field of view only partially visible
Lamp not installed properly or lamp dirty
Frosted glass is not placed in properly
Use error specimen (low reflection)
Aperture diaphragm is too small
Polarizing inset not on the orientation position
Nosepiece is not on the orientation position
Light path is not in position on the levers of
switch orientation
Field of view dirty
Dust on specimen surface
Dust on objective, filter, condenser or eyepiece
Poor image quality ( low resolution, poor
contrast)
Lower brightness or incorrect illumination
Aperture diaphragm is not match with objective
aperture
Use the cover glass specimen
Dust or scratch on objective lens surface
Grease on eyepiece
Improper environment condition, such as: high
moisture, floating dust etc.