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(12) Loosen the eyepiece tube clamp screw to turn the eyepiece tube to the right. Tighten
the clamp screw to fix the eyepiece tube. (If the operator can easily reach the
lamphouse from the front of the microscope while looking into the eyepiece facing
front, it is not necessary to change the direction of the eyepiece tube.)
(13) Loosen the lamp socket sleeve clamp screw to rotate the lamp socket. Rotate the
lamp socket to adjust the longitudinal direction of the lamp. Rotate the lamp centering
screw to adjust the lateral
direction of the lamp. Adjust
these two directions to move
the filament image into the
center of the objective's exit
pupil. Tighten the lamp socket
clamp screw to fix the lamp.
Tum the eyepiece tube to the
front as before.
4. Centering of Field Diaphragm
(1) Push the mirror block changeover lever to put the brightfield mirror block in the
optical path.
(2) Push both the OB/PHOTO•SIDE and OB/PHOTO changeover levers to provide the
binocular eyepieces with 100% light output
(3) Turn on the power switch of the power supply unit. Rotate its lamp intensity control
dial to CTRL. Set the lamp intensity control dial of the microscope base at about 6V.
(4) If a Nomarski prism, the polarizer and the analyzer are in the optical path, remove
them from the optical path.
(5) Fully open the aperture and field diaphragms.
(6) Rotate the revolving nosepiece to switch to the lOx objective.
Rotate the stage movement knobs to locate the center of the opening in the stage ring
almost right above the top of that objective.
(7) Place a flat, high reflectance sample on the stage. Face its surface to be observed
downward.
(8) Rotate the coarse focus and fine focus knobs to focus on the sample.
Stop down the field diaphragm to make the field diaphragm image clearly visible.
This make focusing easier.
