Optika Italy B-1000 Serie Manuel D'instructions page 18

PROBLEM
One side of image is blurred.
Image appears to waver.
Field of view becomes only
slightly brighter when the vol-
tage is raised.
2. Coarse/Fine
Adjustment
Coarse adjustment knob is
hard to turn.
Stage drifts down by itself or
focus is lost during observa-
tion.
Coarse adjustment will not go
all the way up.
Coarse adjustment will not go
all the way down.
Objective makes contact with
specimen before focus is
obtained.
3. Observation Tube
Field of view of one eye does
not match that of the other.
4. Stage
Image shifts when you touch
stage.
Specimen stops midway on
the Xaxis traverse.
X- and Y-axis knobs are too
tight or too loose.
CAUSE
Objective is not correctly engaged in light
path.
Revolving nosepiece is not correctly
mounted.
Stage is not correctly mounted.
Specimen is not correctly mounted on
stage.
Revolving nosepiece is not corrected
mounted.
Objective is not correctly engaged in light
path.
Condenser is not properly centered.
Condenser is not properly centered.
Condenser is lowered too far.
Tension adjustment ring is tightened
excessively.
You are trying to raise stage while focus-
lock lever is kept locked.
Tension adjustment ring is too loose.
Focus-look lever is locked at a too low
height.
Condenser holder is too low.
Specimen is mounted upside down.
Interpupillary distance is incorrect.
Incorrect diopter adjustment.
Different eyepieces are used on left and
right.
Your view is not accustomed to micro-
scope observation.
Stage is not properly mounted.
Specimen is not correctly positioned.
Tension of X- and Y-axis knobs is too high
or too low.
Page 18
SOLUTION
Make sure that revolving nosepiece
clicks into place correctly.
Push slide dovetail all the way until it
is stopped.
Re-attach it.
Place specimen correctly on to of
stage and secure it with slide holder.
Push slide dovetail all the way until it
is stopped.
Make sure that revolving nosepiece
clicks into place correctly.
Center the condenser.
Center the condenser.
Adjust the condenser height position.
Loose ring.
Unlock focus-look lever
Tighten ring.
Unlock focus-look lever.
Raise condenser holder.
Mount specimen correctly.
Adjust interpupillary distance.
Adjust diopter.
Change on eyepiece to match the other so
that both sides are the same type.
Upon looking into eyepieces, try looking at
overall field before concentrating
on specimen range. You may also
find it helpful to look up and into distance
for a moment before looking back into
microscope.
Clamp stage.
Place specimen correctly.
Adjust tension.