Olympus X-Tr Manuel de réparation - Page 21
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12.
Centration of Drum Lenses and Phototube
12-1) Bring drum lens 16X into light path,
and coincide centers of concentric
circles and focusing screen of viewer of
PM-6.
12-2) Eliminate difference from image of 40X
and 6.3X to 16X.
12-3) Adjust differences between images of
25X and lOX from 16X.
12-4) Repeat steps 12-2) and 3) until dif-
ferences between respective images are
eliminated.
Make sure of correct
centration of optical axes of 40X, 25X,
16X, lOX and 6.3X collectively.
12-2)
Move lens frame of drum lens 40X
by prying it with screwdriver's
tip in a range its thread clear-
ance allows, until it is coincided
with 16X.
In case this adjustment
is not enough, move B lens AA4966
and phototube AA4967 in addition.
12-3)
Move lens frame of drum lens 25X
by prying lens frame with screw-
driver's tip in the same manner as
above.
13.
Coincidence of Optical Axes through Phototube and Observation Tube
13-1) Bring drum lens 40X into light path,
insert eyepiece with cross hairs GlOX
into one of eyepiece tubes, and coincide
centers of concentric circles and cross
hairs.
13-2) Move phototube objective by prying
objective frame with screwdriver's tip
in a range its thread clearance allows
until centers of concentric circles and
cross hairs are coincided.
*
Allowance for centration of phototube
eyepiece:
0.4 on image plane of
PM-6 with drum lens 16X.
- 19 -
13-2)
~
~
.i
Put screwdriver's tip at objective
frame, and hit screwdriver back
with another screwdriver slightly
so that objective frame may move.
If it is hard to bring center of
phototube to optical axis of bino-
cular objectives, try to bring
optical axis of binocular objec-
tives to center of phototube by
moving binocular objectives.