17
Problem
Cause Remedy Page
TROUBLESHOOTING GUIDE
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 lights but the field of view is
dark or invisible.
Bulb is burned out. Replace bulb. 26
Light path selector knob of trinocular tube
is positioned halfway.
Push light path selector knob in.
12
b) Field of view is obscured or not
evenly illuminated.
Revolving nosepiece is not in a click
position.
Set it in a click position.
–
Light path selector knob of trinocular tube
is positioned halfway.
Push light path selector knob com-
pletely in or out.
12
Filter is not in a click position. Set it in a click position. 13
c) Dirt or dust is visible in the field of
view.
Dirt/dust on lamp bulb Clean thoroughly.
3
Dirt/dust on specimen
Dirt/dust on extremity of objective
Dirt/dust on eyepiece
d) Visibility of observed image is poor.
· Image is not sharp.
· Contrast is poor.
Objective is not correctly engaged in light
path.
Make sure that revolving nosepiece
clicks into place correctly.
–
Objective or eyepiece in use is not speci-
fied models.
Replace it with a specified model.
22
e) One side of image is blurred.
Image looks like flowing.
Specimen is tilted. Correct specimen positioning. 9
Objective is not correctly engaged in light
path.
Make sure that revolving nosepiece
clicks into place correctly.
–
Light axis is tilted because weight is
heavier than specified.
Reduce number of modules to or be-
low weight limit.
2
2. Observation Tube
a) Field of view of one eye does not
match that of the other.
Interpupillary distance is incorrect. Adjust interpupillary distance. 11
Incorrect diopter adjustment. Adjust diopter. 11
Different eyepieces are used on left and
right.
Change on eyepiece to match the
other so that both sides are the same
type.
11
You are not accustomed to parallel opti-
cal axis.
When looking into eyepieces, do not
stare at image from the beginning but
see the overall field of view. It is some-
times recommended to turn your eyes
away from eyepieces, look far off and
look into eyepieces again.
–
3. Coarse/Fine Adjustment Knobs
a) Coarse adjustment knob is too
heavy to rotate.
Rotation tension adjustment ring is too
tight.
Loosen ring to an optimum tightness.
10
b) Focusing unit drifts down by itself,
causing a loss of focus during ob-
servation.
Tension adjustment ring is too loose. Tighten ring to an optimum tightness.
10
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