Leica DM R Serie Mode D'emploi page 25

ICT condenser prisms*
Remove the 8-position disc (15.2) by unscrewing
the fixing screw (14.4) (the 5-position disc is not
suitable for ICT). Take off the upper and lower
cover plates after removing the 4 (3) fixing
screws.
Insert the ICT condenser prisms K (17.5) into the
large holes (15.K) in the order of their code
numbers (i.e. K1, K2, K3). Insert the prisms so
that the code, e.g. K1, is on the outside. Turn
back the adjustment screw (15.X) if necessary,
turn back both adjustment screws in positions 3
and 4. Press the prism against the spring clip
and engage the catch on the underneath in the
guide groove. Tighten the left-hand adjustment
screw if necessary (the additional right-hand
adjustment screw in positions 3 and 4 is for
darkfield or phase contrast only and must
therefore stay screwed back for ICT so that the
adjustment of the prism with the left screw is not
obstructed.
Mount the light rings for phase contrast and
darkfield if appropriate (see page 23). First lay
the round cover plate on the disc so that all drill
holes and windows coincide and then push in
the corresponding labels (17.3, e.g.
and 20x objectives), as follows:
On the opposite side (i.e. on the other side of
the axis of rotation).
So that the lettering is not upside down when
read, i.e. reading in a direction away from the
outer edge of the disc.
Different labels may be necessary for
differrent objective classes (e.g. N PLAN,
PL FLUOTAR, HC PL FLUOTAR, PL APO), so
always refer to the supplied optics chart for
prisms!
Label unoccupied positions with blank white
labels if desired.
Carefully wipe any fingerprints or dust off the
prisms.
Replace both the cover plates with the 7 screws
and attach the whole disc to the condenser.
Mount the condenser top 0.90 S 1 or P 0.90 S 1 or
P 1.40 OIL S 1 (other condenser tops are not
suitable!).
10 / for 10x
20
25