20
BX51M
Set the light path selector knob to po-
sition or .
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.
Problem
Cause
Remedy
Page
1. Optical System
a) Bulb does not light.
Bulb is burned out.
Replace bulb.
28
b) Bulb lights but the field of view is
dark.
The aperture or field iris diaphragm is
closed.
Open the aperture and field iris dia-
phragms.
10
Analyzer and polarizer are engaged in
light path.
Disengage them from light path.
Light path selector knob of trinocular tube
is pasitioned halfway.
16
Mirror selector lever is in an intermedi-
ate position.
Set the knob correctly.
9
c) Field of view is obscured or not
evenly illuminated
Light path selector knob of trinocular tube
is in positioned halfway.
Set the light path selector knob to a
click position according to the pur-
pose.
16
Mirror selector lever is in an intermedi-
ate position.
Set the knob correctly.
9
Revolving nosepiece is not in a click po-
sition.
Set it in a click position.
–
Revolving nosepiece is not installed cor-
rectly.
Secure it by pushing in the sliding
dovetail all the way until the stopper.
–
Field iris diaphragm is not centered.
Center the field iris diaphragm correctly.
10
Field iris diaphragm is closed too much.
Open it sufficiently.
10
Filter is not in a click position.
Set it in a click position.
11
ND filter is not in a click position.
Set it in a click position.
ND filter is half interlocked.
Set correctly to interlock or release ND
filter.
Lamp bulb is not installed correctly.
Push halogen bulb terminals all the
way into stop position.
28
Analyzer and/or polarizer not installed
correctly
Engage analyzer and polarizer in light
path.
17
d) Dirt or dust is visible in the field of
view.
Dirt/dust on specimen
Clean thoroughly.
Dirt/dust on eyepiece
2
Dirt/dust on extremity of objective
e) Image glares.
Aperture iris diaphragm is closed too
much.
Open it sufficiently.
f ) Visibility of observed image is poor.
· Image is not sharp.
· Contrast is poor.
· Details are poorly visible.
· Darkfield observation is poorly vis-
ible (with flare tendency)
Objective in use is not designed for UIS2
(UIS) series.
Replace with a specified objective for
UIS2 (UIS) series.
24/26
Dummy slider is not inserted in revolv-
ing nosepiece.
Insert dummy slider.
Revolving nosepiece is not installed cor-
rectly.
Secure it by pushing in the sliding
dovetail all the way until the stopper.
–
19
11
11
10
9
Summary of Contents for BX51M
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