Chapter 5 Troubleshooting
1 Viewing Problems and Control Problems
51
Problem Cause Countermeasure
The lamp voltage is too low.
Adjust the brightness with the brightness
control knob on the power supply.
The aperture diaphragm is
stopped down too far.
Open the diaphragm to a suitable size.
The brightness is insufficient.
(Refer to the troubleshooting
for the electric system too.)
The condenser position is too low.
Adjust the condenser focus knob so that the
field diaphragm image is focused on the
specimen surface.
The diopter adjustment has not
been performed.
Adjust the diopters.
The specimen goes out of focus
when the objectives are
switched.
Parfocal adjustment for objectives
has not been performed.
Perform parfocal adjustment.
The specimen movement is too
sensitive.
The torque for the stage handle is
adjusted too light.
Adjust the torque tighter.
The interpupillary distance has
not been adjusted.
Adjust the interpupillary distance.
When viewing through the
binocular eyepiece, the image
does not resolve into a single
image.
The diopter adjustment has not
been performed.
Adjust the diopters.
The interpupillary distance has
not been adjusted.
Adjust the interpupillary distance.
The diopter adjustment has not
been performed.
Adjust the diopters.
Eye strain develops while
viewing.
The brightness is not appropriate.
Adjust the brightness with the brightness
control knob on the power supply.
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