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 Labomed for assistance.
Trouble
Cause
Remedy
1. Uneven brightness in observation
The objective is not engaged in the
t
field
light path
until it clicks
2. Dust or stains are visible in
The eyepiece or specimen glasses are
Clean them thoroughly
observation field
dirty
3. Observation image is whitish-blurred
The objective is not engaged in the
Engage the objective into position
or unclear
light path
until it clicks
The objective, eyepiece and/or
Clean them thoroughly
specimen glasses are dirty
Immersion oil is not used with an
Use immersion oil
immersion objective
Bubbles are present in immersion oil
Remove bubbles
The specified immersion oil is not used
Use the immersion oil supplied by
Labomed
4. Part of image is defocused or image
The objective is not properly engaged
Engage the objective into position
looks like it’s flowing
in the light path
until it clicks
The specimen is not set properly on
Set the specimen correctly on the
the stage
stage and secure using the specimen
holder
5. High-magnification objective touches The specimen is upside down
Set the specimen correctly with the
specimen just before coming into focus
cover glass on the top
6. Focusing is impossible (because the The pre-focusing knob is positioned
Raise its position
stage cannot be raised)
too low
7. Objective hits the specimen when
The specimen is upside down
Set the specimen correctly with the
an objective is switched to a higher
cover glass on the top
magnification objective
The cover glass is too thick
Use a cover glass with thickness of
0.17mm
Slide is of excessive thickness
Use slide having thickness between
0.9 and 1.4mm
8. LED does not light
LED is not mounted
Attach a LED
LED is blown
Replace the LED
Battery is low
Charge battery
9. LED blows easily
The specified LED is not used
Replace with a specified LED
Engage he objective into position
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TROUBLESHOOTING GUIDE
11
Summary of Contents for Sigma
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