Page 14
PROBLEM
CAUSE
SOLUTION
One side of image is blurred.
Objective is not correctly engaged in light
path.
Make sure that revolving nosepiece
clicks into place correctly.
Revolving nosepiece is not correctly
mounted.
Push slide dovetail all the way until it
is stopped.
Stage is not correctly mounted.
Re-attach it.
Specimen is not correctly mounted on
stage.
Place specimen correctly on to of
stage and secure it with slide holder.
Image appears to waver.
Revolving nosepiece is not corrected
mounted.
Push slide dovetail all the way until it
is stopped.
Objective is not correctly engaged in light
path.
Make sure that revolving nosepiece
clicks into place correctly.
Condenser is not properly centered.
Center the condenser.
Field of view becomes only
slightly brighter when the vol
-
tage is raised.
Condenser is not properly centered.
Center the condenser.
Condenser is lowered too far.
Adjust the condenser height position.
2. Coarse/Fine
Adjustment
Coarse adjustment knob is
hard to turn.
Tension adjustment ring is tightened
excessively.
Loose ring.
You are trying to raise stage while focus-
lock lever is kept locked.
Unlock focus-look lever
Stage drifts down by itself or
focus is lost during observa
-
tion.
Tension adjustment ring is too loose.
Tighten ring.
Coarse adjustment will not go
all the way up.
Focus-look lever is locked at a too low
height.
Unlock focus-look lever.
Coarse adjustment will not go
all the way down.
Condenser holder is too low.
Raise condenser holder.
Objective makes contact with
specimen before focus is
obtained.
Specimen is mounted upside down.
Mount specimen correctly.
3. Observation Tube
Field of view of one eye does
not match that of the other.
Interpupillary distance is incorrect.
Adjust interpupillary distance.
Incorrect diopter adjustment.
Adjust diopter.
Different eyepieces are used on left and
right.
Change on eyepiece to match the other so
that both sides are the same type.
Your view is not accustomed to micro
-
scope observation.
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.
4. Stage
Image shifts when you touch
stage.
Stage is not properly mounted.
Clamp stage.
Specimen stops midway on
the Xaxis traverse.
Specimen is not correctly positioned.
Place specimen correctly.
X- and Y-axis knobs are too
tight or too loose.
Tension of X- and Y-axis knobs is too high
or too low.
Adjust tension.
