Olympus CH20 Manual Perbaikan - Halaman 28

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Halaman Cetak

CH10/CH20

2-3 Left / right optical axis adjustment, parfocality adjustment

CUKK3X6SA

Left / right

optical axis

adjustment

0 position

D. REPAIR PROCEDURE

Parfocality adjustment

Set the interpupillary distance at 62 mm.

ž Loosen two screws (CUKK3X6SA)

securing temporarily the MIRROR

ASS'Y•.

ž Move the MIRROR ASS'Y • back

and forth and horizontally so that the

left/right optical axis and the absolute

optical axis can meet the standards.

move outwards

Standard

move inwards

(The use of two standard eyepieces

will make you perform the work

promptly.)

ž Set the standard eyepiece (KN0048;

with adapter-1) and the focusing

telescope (FT-36), and focus on the

specimen in the standard objective

(KN0016). At this time, check that

the parfocality meets the standard.

ž If it is out of standard, adjust it by

moving the MIRROR ASS'Y • in

rotating direction based on the C point

as a center.

Standard

ž (In optical design, the parfocality can be

obtained when the optical axis was

adjusted.)

ž If it does not meet the above standard,

return to the first step and readjust the

optical axis.

ž Remove the R-sleeve and the L-sleeve.

ž Attach the COVER ‚.

ž Attach the R-sleeve and the L-sleeve.

ž Confirm the left/right optical axis again.

ž When it is out of standard, adjust the

position of the sleeve.

Deciding the position of division plate

ž Set the interpupillary distance at 62

mm.

ž Read the tube length in the right

sleeve with helicoid scale of KN0048,

and move the standard eyepiece to the

left sleeve in that condition. When the

focus is obtained in the left sleeve,

stick the DIVISION PLATE „ (refer

to left figure) so that its mark is

adjusted to 0 position of the left

D-4

0.3 mm or less in

left / right

inward direction

optical axis

0.15 mm or less in

vertical direction

absolute

0.3 mm or less.

optical axis

±5 graduations at 62 mm of

interpupillary distance