Labomed Lx 400 User Manual - page 22
The condenser is most often used in the highest position. If the observed
field of view is not bright enough, brightness may be improved by lowering
the condenser slightly
1. Rotate the condenser height adjustment knob (2) to move the
condenser to the highest or desired position.
2. The aperture iris diaphragm ring (1) has an objective magnification scale
(4X, 10X, 40X, 100X). Slide the diaphragm lever left right to achieve the
desired illumination level.
Rotate the revolving nosepiece (1) so that the objective to be used is in line
above the specimen. Always use the ribbed grip(1) to rotate the objective
nosepiece.
7
8
Adjusting the Condenser Position and Aperture Iris Diaphragm
Switching the Objectives
Fig. 30
Fig. 31
19
1
The condenser is fixed and cannot de-center. In case of any error, remove
the condenser by loosening thumb screw and re-install the same.
For models with Koehler illumination:
The Koehler mount has the floating diaphragm mount (fig. 30, 3). With
this the Koehler can be centered wrt to the condenser.
1. Put specimen slide on stage.
2. Click 10x obj. in position.
3. Focus the specimen.
4. Close the Base diaphragm, Remove the slide.
5. Move condenser up & down to get sharp image of base diaphragm.
6. Now optimize base diaphragm by floating it and center it.
7. Leave the base diaphragm at the final position. Close the base
diaphragm fully.
6
Centering the Condenser
Fig. 29
2
1
3