4. Adjustments
3032
4-1 Microscope base
4-1-1 Turning on the Lamp
（
（
（
（
Figure 16
）
）
）
）
Connect the power cord; turn the main switch
①
to “
－
” (on).
4-1-2 Adjusting the Brightness
（
（
（
（
Figure 17
）
）
）
）
Rotate the variable light intensity dial (Fig. 17-1)
clockwise to increase the brightness. Rotating the dial
counterclockwise reduces the brightness.
Using the lowest feasible brightness will increase
the bulb life.
4-1-3 Adjusting the Tension Adjustment
Collar
（
（
（
（
Figure 18
）
）
）
）
★
The tension of the coarse focus knob
②
②
②
②
has been
factory adjusted.
Rotate the tension adjustment collar
①
in the
direction shown by the arrow (Figure 18) to increase
the tension of the coarse focus knob
②.
Rotating the
collar in the opposite direction will decrease the
tension.
The coarse focus knob is too loose if the nosepiece
drops automatically or if the specimen looses focus
soon after focusing with the fine focus knob
③
.
Tighten the tension adjustment collar if either of
these occurs.
8
Figure 16
Figure 18
Figure 17
1
2
1
3
1
