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74
7. Start-up
• Focus on the specimen.
• Focus the ring structure (95a) by loosening the
clamping ring (93.2) somewhat and moving the
eyelens (93.1), or focus the Bertrand lens
(94.2).
• Retighten the clamping ring.
Leica DMI3000B:
• Select the light ring for the active objective on
the condenser.
Leica DMI4000B and Leica DMI6000B:
• Press the PH (phase contrast) button (one of
the variable function buttons behind the focus
wheels). The light ring will be selected in the
condenser.
• If the light ring and the phase ring are not
shown as arranged in Fig. 95c, the light ring
must be centered.
• Insert the centering keys into the openings
provided on both sides of the condenser
(90.3).
•Turn the centering keys until the dark ring
(phase ring in the objective) is congruent with
the slightly narrower bright ring (light ring in
condenser) (95 c).
Caution!
The centering keys must be removed from
the centering openings before changing ob-
jectives. They may block the condenser.
• Repeat the process for all additional phase
contrast objectives.
• Remove the centering keys after centering.
Fig. 97 Condenser centering
1 Centering openings
2 Height adjuster
3 Prism and phase ring centering
2 1
3
21
3
Fig. 96 Condenser with motorized polarizer
1 Centering key for polarizer
1