Olympus IX73 - Page 35

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IX73
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a
b
With the U-UCD8 Condenser
Rotate the condenser height fine adjustment knob counterclock-
wise to loosen it, then push the knob all the way toward the rear.
Rotate the condenser height adjustment knob in the direction of the
arrow to lower the condenser to the level not to hit the specimen.
Rotate the turret to select the “BF” brightfield observation (with which
no optical element is engaged in the light path).
Move the aperture iris diaphragm lever to open the diaphragm.
Move the field iris diaphragm lever
a
to the fully open position
(
).
Engage the 10X objective and bring the specimen into focus.
While gradually opening the field iris diaphragm lever
a
, install the
Allen screwdriver provided with the microscope in the adjustment
hole and rotate it so that the field iris diaphragm image is centered
in the field of view of the eyepieces.
Slowly move the condenser height fine adjustment knob toward the
front to bring the field iris diaphragm image into focus. When focus-
ing is obtained, rotate the knob clockwise to clamp it.
While gradually opening the field iris diaphragm lever
a
, install
the Allen screwdriver provided with the microscope in the adjust-
ment hole
b
and rotate it so that the field iris diaphragm image is
centered in the field of view of the eyepieces.
To check centration, open the field iris diaphragm lever
a
until its
image inscribes the field of view. Now the condenser is centered.
} In actual observation, open the field iris diaphragm until its image
circumscribes the field of view.
} When replacing the specimen or spreading immersion oil, use the
condenser height adjustment knob to raise the condenser first. After
finishing the procedure, lower the condenser to its lowest position.
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