
Axioskop 40 CARE, MAINTENANCE, TROUBLESHOOTING AND SERVICE
Axioskop 40 FL Troubleshooting Carl Zeiss
B 40-810 e 12/01 4-5
Problem Cause Remedy
Low resolving power and poor
image contrast.
The aperture diaphragm opening
is not set correctly.
Set the aperture diaphragm
opening as per the 2/3 rule or the
specimen features, see P. 3-22 ff.
The condenser is not focused
correctly and front lens 0.9 not
switched correctly.
Focus the condenser and switch
front lens 0.9 on or off correctly,
see P. 3-22 ff.
Wrong cover slip thickness for
transmitted-light objectives with
cover slip thickness 0.17 mm.
Use standardized cover slips with
thickness 0.17 mm.
The carrier plate is incorrectly
placed.
Turn over the carrier plate; the
specimen side should point up.
Use of no or non-specified
immersion oil with immersion
objectives.
Use immersion oil 518 N from Carl
Zeiss, see P. 4-8.
Air bubbles in the immersion oil. Apply new oil to remove the
bubbles.
Immersion oil on the front lens of
a dry objective.
Clean the front lens of the dry
objective, see P. 4-2.
The corr. ring is not set to the
correct cover slip thickness.
Set the corr. ring to the correct
thickness, see P. 1-8.
Dirt or dust on the optical surfaces
of objectives, eyepieces,
condensers or filters.
Clean the appropriate optical
components, see P. 4-2.
The condenser is not set correctly. Set the condenser correctly,
see P. 3-22 ff.
The nosepiece is not in click-stop
position.
Correctly click-stop the nosepiece.
Asymmetrically blurred images,
e.g. one side in focus, one side
not in focus.
The specimen is not clamped in
position on the mechanical stage.
Correctly insert the specimen in
the specimen holder and clamp it.
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