TO
OLYMPUS MICROSCOPE SERVICING PERSONNEL
This manual has been published chiefly for proviciing repair procedures for the OLYMPUS System Micro-
scope BHS, but
is
applicable also to the Models BHT and BHTU which are similar to the Model BHS in the
internal construction of the main body. However, light sources of these models are different and specifi-
cally described in "Troubleshooting" contained in the
last
part of this manual.
The Series BH2 models feature
a
fine
&
coarse adjustment assembly of essentially the same design as that
of the Series BH, except for
a
reduction gear unit which
is
attached to the rear of the arm in Series BH2.
BH2-BIITR tubes are of the constant tube length design and are different in the internal mechanism from
BH-BIITR, though optical alignment procedures for the prisms are nearly the same. Further, adoption
of the constant tube length design has made it possible
lo
take lnicrographs with the focusing eyepiece
inserted into the right side eyepiece sleeve of the
observatio~i lube, illereby introducing the necessity to
adjust parfocality of observation tube and phototube.
In order to prevent trouble from occurring during
shipmelit or long-term use, importants immovable
parts are fixed with cement and are particularly
descrit~ed at the steps of disassembly in this manual.
Removing procedures are given for parts which are
glued with adhesive agents of exceptionally high bond-
ing force.
Prisms are glued with Araldite
OT1028. When
it
is
necessary to disassemble these prisms, cut off excessive
cement with
a
razor blade (one-side edge) or knife edge before attempting disassembly. If the prisms cannot
be disassembled even after removing excessive cement, heat the entire area of the cemented surface with
a soldering iron or a similar tool.
In the descriptions contained in this manual, "right" and "left" are defined in the direction as seen by the
microscopist sitting in the observing position through the microscope.
For cleaning lenses, a liquid mixture of alcohol
(3)
and ether
(7)
should be used. For details, reference
should be made to "How to Clean the Microscope" which
is
available upon separate request.
Requisites for repairs:
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
its
repair.
a) Find out what parts are defective and how much they are
damaged.
b) Prior to
repair, think of the best possible order to disassembling the defective parts in
a
most
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
it
practice to use tools and jigs speci-
fied for purpose.
5.
Make repairs promptly and accurately.
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