12100 POLARIZING MICROSCOPE SERIES
UNITRON
®
17
TROUBLESHOOTING
Under certain conditions, performance of this unit may be adversely affected by factors other than
defects. If a problem occurs, please review the following list and take remedial action as needed. If you
cannot solve the problem after checking the entire list, please contact your local dealer for assistance.
OPTICAL
Problem
Cause
Corrective Measure
Double images
Interpupillary distance is not correct
Readjust it
Diopter adjustment is not correct
Readjust it
Dirt appears in the view field
Dirt on the specimen
Clean specimen
Dirt on the surfaces of eyepieces
Clean eyepieces
Image is not clear
Dirt on the surface of objectives
Clean objectives
Image is not clear while focusing
change
Diopter adjustment is not correct
Readjust diopter
Focusing is not correct
Readjust it
The focusing knob does not turn
smoothly
The focusing knob is too tight
Loosen it to a suitable position
Darkness at the periphery or uneven
brightness of field of view
Revolving nosepiece not in click stop
position
Revolve the nosepiece to click
stop position by swinging the
objective correctly into the
optical path
Dirt or dust on the field of view
Dirt or dust on the lens - eyepiece,
condenser, objective, collector lens
or specimen
Clean the lens
