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TROUBLESHOOTING GUIDE
Problem
Cause
Remedy
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Under certain conditions, performance of the unit may be adversely affected by factors other than defects. If problems occur,
please review the following list and take remedial action as needed. If you cannot solve the problem after checking the
entire list, please contact your local Olympus representative for assistance.
1. Optical System
a) Bulb does not light.
Bulb is burned out.
Replace bulb.
Power cord is unplugged.
Plug power cord into the power outlet.
b) Bulb operates, but field of view re-
mains dark.
Aperture and field iris diaphragms are not
opened wide enough.
Adjust them to proper sizes.
c) Field of view is obscured or not
evenly illuminated.
Revolving nosepiece is not correctly en-
gaged.
Make sure that the revolving nosepiece
clicks properly into place.
Condenser top lens is not set correctly.
Swing out the top lens.
Condenser is not properly centered.
Center the condenser.
Turret is set in an intermediate position.
Set turret to a click position.
Field iris diaphragm is stopped down too
far.
Open the field iris diaphragm until it
circumscribes the field.
Bulb is not mounted correctly.
Push the pins of halogen bulb all the
way until the stop position.
d) Dirt or dust is visible in the field of
view.
Dirt/dust on the eyepieces.
Clean thoroughly.
Dirt or dust on condenser top lens, turret
upper surface covering glass
Dirt/dust on the specimen.
e) Visibility is poor.
· Image is not poor.
· Contrast is poor.
· Details are indistinct.
· Image glares.
A non-UIS2/UIS objective is used.
Use only UIS2/UIS series objectives
with this microscope.
Aperture iris diaphragm is stopped down
too far.
Open aperture iris diaphragm.
Correction collar on correction collar
equipped objective is not properly ad-
justed.
While focusing, turn the correction
collar to find the best position.
Front lens of objective is dirty.
Clean objective.
Immersion oil is not being used with an
oil immersion objective.
Use immersion oil.
Immersion oil contains bubbles.
Remove the bubbles.
Recommended immersion oil is not
used.
Use the provided immersion oil.
Dirt/dust on specimen.
Clean it.
Dirt/dust on condenser top lens, turret or
upper surface covering glass.
Inappropriate object side or cover glass
thickness.
Replace with glass of recommended
thickness.
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