www.microscopenet.com
9
5
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 lens cleaning
paper
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
No enough lighting or driver not installed
properly
Check the camera manual
Image is totally
white through
camera
The light is too bright
Manually adjust the exposure in the
software. See manual for details.
