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6
Troubleshooting Guide
Problem
Cause
Solution
Lamp does not light when
switched on
No electrical power
Check power cord connection
LED or power unit dead
Contact seller for service
Darkness at the periphery
Revolving nosepiece not in click stop
position
Revolve the nosepiece to click-stop
position by swinging the objective correctly
into the optical path
Uneven brightness in the
field of view
The diffusion filter is not in the light path
Check the diffusion filter and make sure it’s
in the light path
Insufficient brightness
Diffusion filter used when using 100X
objective
Swing out the diffusion filter when using
100X objective
Dirt or dust on the view
Dirt or dust on the lens eyepiece,
condenser, objective, collector lens or
specimen
Clean the lens with a camera cleaning kit
Dirt or dust on the specimen
Clean the specimen
Poor image quality or not
able to get focused image
No slide cover attached to the slide
Attach a 0.17mm slide cover
Slide cover is too thick or thin
Use a slide cover of the appropriate
thickness (0.17mm)
Slide may be upside down (specimen at
the bottom)
Turn slide over so the cover-glass faces up
Diopter adjustment is not set properly
Readjust the diopter settings
Immersion oil is on a dry objective
(especially the 40X)
Check the objectives, clean if necessary
No immersion oil used with 100X
objective
Use immersion oil
Air bubbles in immersion oil
Remove bubbles
Specimen rises from stage surface
Secure the specimen in the slide holder
Condenser aperture is closed or open
too much
Open or close properly
Condenser is positioned too low or too
high
Move condenser upper or lower
Lamp intensity is too high or low
Adjust the light intensity by rotating the
intensity control dial
Image is black screen
through camera
(
optional)
No enough lighting or driver not installed
properly
Check the camera manual
Image is totally white
through camera
(
optional)
The light is too bright
Manually adjust the exposure in the
software. See manual for details.
