TROUBLESHOOTING GUIDE
If a problem occurs during the course of use, please refer to the tables below
before contacting your distributor.
OPTICAL
Problem
Cause
Corrective Measure
Darkness at the periphery
Revolving nosepiece not in
Revolve the nosepiece to
click-stop position by
or uneven brightness in the
click stop position
swinging the objective
field of view
correctly into the optical path
Dirt or dust on the viewfield
Dirt or dust on the lens -
Clean the lens
eyepiece, condenser,
objective, collector lens or
specimen
Poor image quality
No coverglass attached to
Attach a 0.17mm coverglass
the slide
Coverglass is too thick or thin
Use a coverglass of the
appropriate thickness
(0.17mm)
Slide may be upside down
Turn slide over so the cover-
glass faces up
Immersion oil is on a dry
Check the objectives, clean
objective (especially the 40xR)
if necessary
No immersion oil used with
Use immersion oil
100xR objective
Air bubbles in immersion oil
Remove bubbles
Condenser aperture is closed
Open or close properly
or open too much
Condenser is positioned too
Position the condenser at
low
the upper limit
IMAGE PROBLEMS
Image moves while focusing
Specimen rises from stage
Secure the specimen in the
surface
slide holder
Revolving nosepiece is not
Revolve the nosepiece to the
in the click-stop position
click-stop position
Image tinged yellow
Blue filter not used
Use daylight blue filter
