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45
7. Startup
Fig. 45 Reflector cube for lamp adjustment
• Insert the centering key through the corre-
sponding openings (44b.1) on both sides of the
condenser.
• Turn the centering key until the dark ring
(phase ring in the objective) is congruent with
the slightly narrower bright ring (light ring in
condenser) (44a.c).
Note:
When changing the objective, the centering key
must no longer be in the corresponding open-
ings.
• Repeat the process for all other phase con-
trast objectives.
• Always remove the centering keys after the
centering procedure.
Fig. 44b Light ring centering
1 Centering key in the phase contrast centering hole
2 Polarization contrast centering hole
1
2
7.7 Setting the motorized polarizers
(DM4500 P/DM5000 B)
• Select the POL method (one of the variable
function keys on the stand or on the Leica-
Screen).
• Insert the centering key into the correspond-
ing openings (44b.2) on the condenser.
• Set the optimum extinction (max. darkness).
7.8 Adjusting the light sources
Transmitted-light axis (TL) with lamp housing
107/2
The lamp housing 107/2 with a 12 V 100 W halo-
gen lamp is fixed. Centering the lamp is not re-
quired.