OBSERVATION
CAUSE
REMEDY
1. Uneven brightness in observation
field
The objective is not engaged in the
light path
The objective is not engaged in the
light path
The objective is not engaged in the
light path
Engage the objective into position
until the nose turret clicks
The condenser is too low
The condenser is too low
The condenser is too low
The condenser iris diaphragm ring is
closed
Raise up to achieve more light (Pg#19)
The objective, eyepieces, condenser
and/or window lens are dirty
The objective, eyepieces, condenser
and/or specimen glass is dirty
The eyepieces, condenser, window
lens and/or specimen glass is dirty
Clean them throughly as previously
Prescribed in “Optical Cleaning” (Pg#4)
2. Dust or stains are visible in
observation field
Clean glass parts throughly with
lens tissue and cleaning solution
Prescribed in “Optical Cleaning”(Pg#4)
3. Glare visible in field of view
Raise condenser light
Adjust the aperture according to the
objective magnification (Pg#18)
4. Observation image is hazy
or unclear
Engage the objective into position
until it clicks (Pg#19)
Clean glass parts throughly with
lens tissue and cleaning cloth
Immersion oil is not used with an
immersion objective
Use immersion oil as suggested
(Pg#20)
Bubbles are present in immersion oil Remove the bubbles by agitation
(Pg#20)
The specified immersion oil is not
used
Use the immersion oil supplied by
LABOMED
5. Part of image is defocused
Engage the objective into position
until the nose turret clicks
The specimen is not set properly on
the stage
Set the specimen correctly on the
stage and secure using the specimen
holder (Pg#16)
6. Coarse focus adjustment cannot
lower the stage low enough
Raise the condenser
7. Fields of view through both
eyepieces is inconsistent
The interpupillary distance is not
adjusted properly
Adjust IPD to the appropriate setting
(Pg#18)
Dioptric compensation for the two
eyes is not set
Adjust diopter settings (Pg#18)
The left and right eyepieces are of
different magnification
Ensure that both eyepieces are of
same magnification. LABOMED
does not recommend using third
party eyepieces in conjunction with
LABOMED eyepieces
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 corrective action as needed. If problem
persists, please contact LABOMED or your local LABOMED dealer.
24
TROUBLESHOOTING GUIDE
14
Lx 400
9126000-795
Lx 400
Issue 1.5
Printed on April,2019
