Optika Italy IM-5 Serie Manual De Instrucciones página 23

II. Mechanical Section:
The coarse focus knob is hard to turn.
The revolver goes down by itself during
observation
III. Electrical Section:
Bulb does not light
Brightness is not enough
Light blinks
IV. Observation tube:
Field of view of one eye does not match
that of the other
V. Microphotography:
Image edge is unfocused
Bright spots appear on the image
The tension adjustment collar is too
tight
The tension adjustment collar is too
loose
Power cord/supply is unplugged
Brightness setting is too low
Power supply not well connected
Interpupillary distance is incorrect
Incorrect diopter adjustment
Your view is not accustomed to micro-
scope observation
To a certain extent it is due to achro-
matic objectives features
Stray light entering in the microscope
through eyepieces or camera viewfind-
er
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Loosen the tension adjustment collar
Tighten the tension adjustment collar
Connect into the power outlet
Adjust brightness
Check for proper connection
Adjust interpupillary distance
Adjust diopter
Upon looking into eyepieces, try look-
ing 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
To minimize the problem, set the aper-
ture diaphragm in a proper position
Cover eyepieces and viewfinder with a
dark cloth