/
R-4104.A
AD.JUSTMENT
3.
Smooth
Turning of the Right Fine Focus Knob
4.
Parallelism between the Tube Attaching and Stage Attaching Surfaces
3.
Smooth
Turning of the Right Fine Focus Knob
!)
Referring
to
Reassernbly
Procedure
(P.
32), insert right
fine
focus
knob
C@D
into
fine
focus shaft
e@
(beforehand,
place
set screw @ into
C@D
).
Pushing
the
left
and
right
fine
focus
knobs inwards,
fix
thern
in
such positions
by
rneans
of @ , that a
torque of
30g - 40g
is
obtained. (Measuring procedure:
Fig.
38).
2)
Make
sure
of
no
thrust slack felt
by
touching with t
he
finger
and
no
seizure
between
@
and
right
coarse
focus
knob
@.
Also, check
for
smooth tuming of the
fine
and
coarse
focus
knobs.
4. Parallelism between the Tube Attaching and Stage Attaching Surfaces
For checking the parallelism, the
top
surface of tube receptacle (})serves
as
fiducial.
1)
Bringing
the
too!
collimator onto
the
top surface of tube receptacle 0. check the
parallelism
using
a mirror placed
on
the surfaces
(!
),
(2)
and
(3) one after another,
as
shown
in
Fig.
44.
12'
~irror
(a)
(b)
Fig.
44
2) The parallelism should
be
within the
range
as
indicated
in
Fig.
44(b).
3)
lf
this
range
is
overrun,
make
the
parallelism adjcistment
as
foUows:
Viewing toward
the
fro=it
of
the microsccpé, release screws
<@K4
(flrst,
two
of
them,
and if not sufficient,
ali
the
four),
and
~wing
the whole substage
l1teraHy
for
X-direction.
Then
for
Y-direction.
using
adjusting
was.hers
@ - @ between (j)
and
@ ,
swing
back
and
forth, until the parallelism
c::imes
vtithin
the
5 >pecified range.
- 39 -
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