www.microscopenet.com
8
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
Fuse blown out
Replace fuse
Darkness at the
periphery or uneven
brightness in the field
of view
Revolving nosepiece not in
click stop position
Revolve the nosepiece to click-stop
position by swinging the objective
correctly into the optical path
Dirt or dust on the view
Dirt or dust on the eyepiece,
condenser, objective,
collector lens or specimen
Clean the lens with a lens cleaning
paper
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
Condenser aperture is closed
or open too much
Open or close properly
Condenser is positioned too
low
Position the condenser upward
Specimen rises from stage
surface
Secure the specimen in the slide holder
Revolving nosepiece is not in
the click-stop position
Revolve the nosepiece to the click-stop
position
Lamp intensity is too high or
low
Adjust the light intensity by rotating the
intensity control dial
Slippage of focus when
using the coarse
focusing knob Fine
focus is ineffective
Tension adjustment is set too
low
Increase the tension on the focusing
knobs
Tension adjustment is set too
high
Loosen the tension on the focusing
knobs
