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Leica M Stereomicroscopes – Illuminations
Disconnect the lamp cable from the transformer.
Never touch the bulb when it is hot.
You may sustain burns.
•
Do not touch the 6 V/20 W halogen bulb directly with your fin-
gers, because finger marks can cause it to crack when heated.
Remove finger marks immediately with a cloth dipped in pure
alcohol.
̈ Press the spring clips together and
pull off the rear part of the housing.
̈ Hold the new bulb in a cloth and push
it into position.
̈ Press the spring clips together and
close the housing again.
̈ Center the bulb.
The 6 V/20 W bulb is a powerful source of illumination. The
more carefully you set it up, the more uniform the lighting will
be. For this reason, recenter a new bulb after fitting it.
̈ Switch on the lamp.
̈ Swing out the diffusing filter.
̈ Pull the condenser lens fully out.
̈ Hold the lamp and release the
clamping screw.
̈ Point the lamp vertically downwards
at a white sheet of paper so that two
filament images are seen.
̈ Retighten the clamping screw.
̈ Using the slotted screw, bring the
two filament images into focus.
̈ Displace the filament images so that
they are opposite to one another, but
in contact.
̈ Swing back the diffusing filter.
Changing the bulb
Centering the bulb