Olympus X-Tr Onarım Kılavuzu - Sayfa 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)

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.