Coarse/Fine Focusing; Observation Tube - Olympus BX53M Instructions Manual

Number of beeps
k) The stored brightness (LIM function) cannot be restored to the factory default setting.
None

5-3 Coarse/fine focusing

Phenomena
a) The tension of the coarse
focusing knob is too tight.
b) The stage descends on its own
weight.
Or the sample is defocused due
to the slip of the coarse focusing
knob.
c) The sample is defocused.
(The stage does not rise.)

5-4 Observation tube

Phenomena
a) The fields of view of two eyes do
not coincide.
84
Phenomena
CB
Cause
The tension adjustment ring of the
coarse focusing knob is tightened
too firmly.
The stage is raised while the pre-
focusing lever is locked.
The tension adjustment ring of the
coarse focusing knob is loosened
too much.
The height of the stage is adjusted
too low.
The pre-focusing lever is locked
at the position where the stage is
placed low.
Cause
The interpupillary distance is not
adjusted correctly.
The diopter of two eyes is not
compensated.
The different eyepiece is used for
right and left eyes.
The user is not used to the parallel
optical axis.
LIM /
/
Remedy
Loosen the tension adjustment
ring so that the tension of the
coarse focusing knob becomes the
appropriate tightness.
Unlock the pre-focusing lever.
Tighten the tension adjustment
ring so that the tension of the
coarse focusing knob becomes the
appropriate tightness.
Raise the stage or the raise the stage
holder mounting position.
Unlock the pre-focusing lever, bring
the sample into focus with the coarse
focusing knob and lock the pre-
focusing lever again.
Remedy
Adjust the interpupillary distance
correctly.
Compensate the diopter correctly.
Use the same eyepiece for right and
left eyes.
The following measures may help
this problem: Do not look at the
image immediately after looking into
the eyepiece, but look at the whole
field of view or release your eyes from
eyepieces and look afar once, and
then look into the eyepieces.
HS MIX
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