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8
Troubleshooting Tables
If difficulties should be encountered in the course of operation, please recheck the symptoms,
referring to the tables below, before contacting your nearest Nikon representative.
Optical
1
Revolving nosepiece not in click-stop
position (objective not centered in the
optical path).
Condenser position too low.
Condenser not installed correctly.
Field diaphragm not centered (if the
microscope is equipped with a field
diaphragm).
Field diaphragm closed too far (if the
microscope is equipped with a field
diaphragm).
Field lens unit not installed correctly.
Lamp not installed correctly.
Dirt or dust on the lens (condenser,
objective, field lens, eyepiece,
specimen)
Darkness at the periphery, no viewfield seen,
or uneven viewfield brightness.
Causes
77
Corrective Measures
Revolve to click-stop position (swing the
objective correctly into the optical path).
If the microscope is equipped with a
field diaphragm, correct positioning so
that the field diaphragm image is
focused on the specimen surface. (P.57)
If the microscope is not equipped with a
field diaphragm, position the condenser
slightly lower than the upper limit.
Install correctly. (P.70)
Center the field diaphragm. (P.57)
Open properly. (P.60)
Install correctly. (P.72)
Install correctly. (P.72)
Clean the lens. (P.84)
8
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