Olympus SZ-III Service manual

OLVMPLIS

ZOOM

MODEL

STEREO

111

MICROSCOPE

REPAIR

MANUAL

PREFACE

1. It is generally considered very difficult to achieve optical alignment of a zoom stereomicroscope. In

i"

i

1

comparison with Olympus Stereo Microscopes such as Model VT-II, VB, etc., the zoom stereo micro­scope Model
master the optical alignment of this microscope, other Olympus stereo microscopes become easier to
you.

It

is

recommended to pay careful attention to the checking order

This order should be kept in the alignment procedure.

For instance, if you observe a double image through the binocular observation tube, points

arelis involved. In case two or more points are involved, their alignment order should not be changed.

If you check the optical alignment in the order of 3.1 and 5, you have to repeat the alignment in the

order of 1,3 and 5.

2. Requisites for Repairs
A lot of screws used in microscopes have been cemented in position with various adhesives to prevent
them from loosening in transit, operation, etc. If
their heads and ascertain whether they are cemented with what kind of adhesive. You may be able to
identify adhesives by their outside coloring and choose the best way to remove.

a.

"ARALDITE", tinted with
screwdriver.

b. "NEJI-LOCK" is slightly red. Screws cemented with "NEJI-LOCK" are removable with

driver. If not, apply heat slightly before unscrewing.

c. "SHELLAC" is

with alcohol.
d. "HIGH SUPER" (cemedine), tinted with
e.

"PLIOBOND", sober yellow, requires

screws.

SZ-Ill

is

complicated in its structure, but not so such in

it

is necessary to remove screws for repair, look at

brown.

Shellacked screws are removable with a screwdriver. If not, moisten them

white

and translucent, requires heating before loosening screws with

white.

a

requires heating before loosening screws.

small amount of mixture (alcohol and ether) to loosen

as

described in

its

optical alignment. If you

"11.

CHECK POINTS".

1, 3andlor 5

a

a

screw-

Others:
(1) First of all, ascertain what parts of the microscope the user or owner of which wishes you to repair.

(2)

Never fail to check the entire function of the microscope before you commence

1) Find out what parts are defective and how much they are damaged.

2) Prior to repair, think of the best possible order of disassembling the defective parts in

efficient way.

3) After completing the repair, check the functions of not only the re-assembled parts but also the

entire microscope to make sure no defect should be left unremedied.

4)

Be careful not to deform repair parts during the assembly; make the point of using tools and jigs

specified for purpose.

5) Make repairs promptly and accurately.

its

repair.

a

most

Model

SZ

1.

REPAIR

TOOLS

C-2: Eyepiece with cross hairs GIOX (for centration)

Regular eyepiece:

C-15: Focusing magnifier

GlOX (for parfocality checks)

PM-FT

(for parfocality checks)

KN0003: Test plate with 51100 concentric circles

OTOOII: Screwdrives (set of 6 pcs.)

OT0261: Others: Hexagonal wrench
OT1131: Adhesive "LAC"
OT0022: Adjustable spanner (blade tip)

2.

CHECK

POINTS

:

b

Order

1

Check

at

Decentration of image
interpupillary distances

Deterioration of focus when zoom­ing

Decentration of image when zoom­ing

Parfocality between right hand and
left hand optical systems

Centration of right hand and left
hand optical systems

various

Description

Decentration of image should be corrected on right

and left optical systems respectively.

at

After focusing
when zooming to low magnification should be
adjusted on the right and left hand optical systems,
respectively.

After centration of image at high magnification,
shift of image when zooming to low magnification
should be adjusted on the right and left optical
systems respectively.

After centration of image in the left hand optical
system, shift of focus in the right hand optical
system should be corrected.

After centration of image in the right hand optical
system, decentration of the left hand optical system
should be corrected.

high magnification, shift of focus

3.

ALIGNMENT PROCEDURE

Check Points

1.

Decentration of
image at various
interpupillary

distances

Working Steps

1) This alignment should be carried out in the
same order of steps on the right and left hand
optical systems, respectively.

Tools

0

Test plate (5/100
concentric circles)

2)

After conciding the centers of the cross hairs
and concentric circles, change the

inter­pupillary of the center of the concentric
circles.

Center of test plate

G

?OX

with cross

hairs

o

Screwdrivers

Cross hai;s of

Fig. I Maximum interpupillary distance

Center of movement

\

I

\

Fig. 2 Minimum interpupillary distance

GlOX

Locus of

movement

3)

If the center of the concentric circles moves
in the direction of the arrow in Fig.

2,

mine the center of rotation from the locus of

deter-

its movement. (the image moves around this

center.)

4)

After determination of the center of rotation,
take the steps below:

1. Remove eyepiece sleeves (AA072300,
ZJ826800).

2. Remove two screw (AA072000) and cover
of prism housing

3.

Replace eyepiece sleeve.

4.

Loosen three

(AA071900).

CUK3

x

14SA screws and
move prism P2 and prism mount
AA068100 together until the centers of
the cross hairs and concentric circles are
coincident.

Fig.

3