Olympus BHTU - Page 21

Phenomenon
Cause Remedy
3,
Coarse and Fine Adjustments
I
aj
Coarse adjustment knob is
Tension adjustment ring is
Loosen ring properly.
too tight.
tightened too much.
Users
is trying to raise stage Unlock pre-focusing lever.
above the focusing
limit with
pre-focusing
lever
engaged.
bl
Stage drops
or specimen
Tension
adjustment ring
is Tighten ring properly.
goes out of focus during
too loose.
observation due
to slipping
fine adjustment knobs.
c)
Stage cannot be
raised
to
Pre-focusing lever is engaged
Unlock lever.
the upper limit.
in lower than focusing posi-
tion.
dl
Stage cannot be lowered
Condenser
mount is lowered Raise condenser.
to the lower limit.
too much.
e)
Objective front
lens hits
Specimen is placed on stage
Reverse specimen.
specimen before
coming
upside
down ..
into focus.
4,
Observation Tubes
al
Incomplete
binocular vi-
Interpupillary distance is not
Correct the interpupillary dis-
sian.
correctly adjusted.
tance.
Diopter adjustment is incom-
Complete
the diopter adjust-
plete,
ment.
Right and
left
eyepieces are Use a
pair of matched eye-
not matched. pieces.
User
is unaccustomed
to bi-
Prior to looking into the bi-
nocular vision. nocular observation tube, look
at a far away object.
5,
Stage
a)
Image
easily
goes out of
Stage is not correctly locked.
Clamp
stage securely.
focus when
you touch the
stage.
Adjust specimen pOSitioj
bl
Specimen stops midway
Specimen is not correctly po-
on the east-west traverse.
sitioned.
20