Optika B-1000 Series Instruction Manual page 37

One side of the image is out of focus.
Image appears to waver
Field of view becomes only slightly
brighter when the voltage is raised.
II. Mechanical Section:
Coarse adjustment knob is hard to turn Tension adjustment ring is too tight
Stage drifts down by itself or focus is
lost during observation
Coarse adjustment will not go all the
way up
Coarse adjustment will not go all the
way down
Objective makes contact with speci-
men before focus is obtained
III. Electrical Section:
LED doesn't turn on
Brightness is not enough
Light blinks
IV. Observation tube:
The field of view of one eye does not
match the field of view of the other eye
V. Microphotography:
Image edge is unfocused
Bright spots appear on the image
The nosepiece is not in the center of
the light path
The specimen is out of place (tilted)
Stage is not correctly mounted
The optical performance of the sample
cover glass is poor
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
You are trying to raise stage while fo-
cus-lock lever is kept locked
Tension adjustment ring is too loose
Focus-lock lever is locked at a too low
height
Condenser holder is too low
Specimen is mounted upside down
Power supply not connected
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
Page 37
Turn the nosepiece to a click stop
Place the specimen flat on the stage.
Re-attach it
Use a cover glass of better quality
Push slide dovetail all the way until it
is stopped
Make sure that nosepiece clicks into
place correctly
Center the condenser
Center the condenser
Adjust the condenser height position
Loosen tension adjustment ring
Unlock focus-lock lever
Tighten ring
Unlock focus-lock lever
Raise condenser holder
Mount specimen correctly
Check for proper connection
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 ap-
erture diaphragm in a proper position
Cover eyepieces and viewfinder with a
dark cloth