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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.
IMAGE PROBLEMS
Problem
The edge of the
field of view is dark
or the brightness is
not uniform
Find dust and stain
in the field of view
The image is
defocused
( low resolution /
contrast)
ACCU-SCOPE
®
3002-CB FORENSIC COMPARISON MICROSCOPE SERIES
The nosepiece is not in the located position (objective
and light path not coaxial)
The image of filament is not centered
A lens (the objective, condenser, eyepiece or collector) is
dirty.
There are stains on the lens （including condenser,
objective, eyepiece and collector）
There are stains on the specimen
The position of the condenser is too low
There is no cover slip on the specimen
The cover slip is too thick or too thin
The specimen is placed inversely
There was oil on the dry objective(easily happened in
40X objective)
There are stains on the lens （including condenser,
objective, eyepiece and collector）
Didn't use oil for the oil objective
There is an air bubble in the oil
Use of non-recommended oil
The size of the aperture diaphragm is wide open
There are stains on the incident lens of the binocular
tube
The size of the aperture diaphragm is too small
The position of the condenser is too low
73 Mall Drive, Commack, NY 11725 • 631-864-1000 • www.accu-scope.com
Cause
Corrective Measure
Locate the nosepiece
properly where it clicks
Center the filament
Clean it thoroughly
Clean it
Clean it
Loosen the condenser's
locking bolt, adjust the
condenser to the right
position
Add cover slip
Use the standard cover
slip ( 0.17mm )
Reverse it back
Clean it
Clean it
Use immersion oil
Eliminate air bubble
Use manufacturer's
recommended oil
Adjust it
Clean it
Adjust it
Adjust the position
16
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