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Do not attempt re-adjustment.
The highest position of the condenser has been factory adjusted. Do not attempt to
re-adjustment.
3.7 Adjusting iris aperture diaphragm
Move the iris diaphragm lever left or right to adjust the
aperture size.
Note:
The iris diaphragm is designed to adjust the aperture
size, not to adjust brightness. Generally, opening the
diaphragm to 70-80% of the N.A. value of the
respective objective will provide an image of
acceptable quality. If you want to observe the image of
the iris diaphragm, remove one eyepiece and look
through the tube. You will see a dark circle encroaching
on the bottom of the tube.
3.8
Adjusting focus knob tension
The tightness of the focus knob tension has been
pre-set at the factory. If the mechanical stage
drops by itself, rotate the tension adjustment ring
located inside the focus knob on the power switch
side until the tension is in maintained. Tension
Ring
4
Specifications
Tension Ring
