3000-LED MICROSCOPE SERIES
ACCU-SCOPE
®
18
IMAGE PROBLEMS
Problem
Cause
Corrective
Measures
Image moves while focusing
Specimen rises from stage
surface
Revolving nosepiece is not in
the click-stop position
Secure the specimen in the
slide holder
Revolve the nosepiece to the
click-stop position
Image tinged yellow
Lamp intensity is too low
Blue filter not used
Adjust the light intensity by
rotating the intensity control
dial and/or iris diaphragm
Use daylight blue filter
Image is too bright
Lamp intensity is too high
Adjust the light intensity by
rotating the intensity control
dial and/or iris diaphragm
Insufficient brightness
Lamp intensity is too low
Aperture diaphragm closed too
far
Condenser position too low
Adjust the light intensity by
rotating the intensity control
dial and/or iris diaphragm
Open to the proper setting
Position the condenser slightly
lower than the upper limit
MECHANICAL PROBLEMS
Image will not focus with high
power objectives
Slide upside down
Cover glass is to thick
Turn the slide over so the
cover glass faces up
Use a 0.17mm cover glass
High power objective contacts
slide when changed from low
power objective
Slide upside down
Cover glass is to thick
Diopter adjustment is not set
properly
Turn the slide over so the
cover glass faces up
Use a 0.17mm cover glass
Readjust the diopter settings
as outlined in section 4.3
