Olympus X-Tr Repair Manual - Page 18
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b. If focus is deviated
to
the "-" side
(or eyepiece tube is shortened), mov
prism P2 forward until focus is
obtained by aligning helicoid ring
t
position "0".
7.
Centration and Focusing of Drum Lenses in the Left Field of View.
7-1) Bring drum lens 16X into light path,
insert eyepiece GlOX into left eyepiece
tube, and focus on specimen with
focusing telescope.
7-2) Coincide focus of drum lenses 40X and
6.3X
to
that of drum lens 16X.
7-3) Coincide focus of drum lens 25X and lOX
to
that of drum lens 16X.
7-4) Bring drum lens 16X
to
light path,
insert eyepiece with cross hairs GlOX
into left eyepiece tube and coincide
centers of concentric circles and cross.
hairs.
7-5) Coincide image of specimen at 40X and
6.3X
to
image at 16X
7-6) Coincide images at 25X and lOX
to
that
at 16X.
7-7) Repeat steps 7-3), 7-5) and 7-6) until
adjustment is complete.
- 16 -
7-2)
Move drum len's 40X up and down by
aid of spring located beneath drum
lens, until focus is adjusted, in
a same manner as in 4-3).
7-3)
Move drum lens 25X up and down by
aid of spring located beneath drum
lens, until focus is adjusted in
a same manner as in 4-4).
7 -5)
Follow step 5-2).
7-6)
Follow step 5-3).