EXI-310 INVERTED MICROSCOPE SERIES
ACCU-SCOPE
®
18
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
SOLUTION
The illumination is on, but the
field of view is dark.
The socket pin is not connected to the
illumination column
Connect it securely
The bulb is burnt out.
Replace it with a new one
The brightness is set too low
Set it to the appropriate position
Two many filters are stacked
Reduce them to the minimum required
number
The edge of the field of view is
obscured or not evenly
illuminated.
The nosepiece is not in the located position
Turn the nosepiece into the position where
you can hear it engaged
the color filter is not inserted fully
Push it in all the way
The phase contrast slider is not located in the
proper position
Move the slider until it clicks into place
Dirt or dust is visible in the field
of view
Dirt/dust on the specimen
Replace with a clean specimen
Dirt/dust on the eyepiece
Clean the eyepieces
The image glares
The iris diaphragm is closed too much
Open up the iris diaphragm
Visibility is poor
Image is not sharp
Contrast is poor
Details are indistinct
Phase contrast effect
cannot be obtained
The objective is not correctly engaged in the
light path
Turn the nosepiece into the engaged position
the aperture diaphragm is opened or stopped
down too far in brightfield observation
adjust the aperture diaphragm properly
The lens (condenser, objective, ocular or
culture dish) become dirty
Clean it thoroughly
In the phase contrast observation, the bottom
thickness of the culture dish is more than
1.2mm.
Use a the culture dish whose bottom
thickness is less than 1.2mm
Use a brightfield objective
Change to the phase contrast objective
The light annulus of the condenser does not
match the phase annulus of the objective.
Adjust the light annulus so that it matches the
phase annulus of the objectives
The light annulus and the phase annulus are
not centered
Adjust the centering screws to center it
The objective used is not compatible with
phase contrast observation
Please use the compatible objective
When looking at the edge of the culture dish,
the phase contrast ring and the light ring is
deviated from each other
Moving the culture dish until you obtain the
phase contrast effect. You also could
demount the slider, and set the field
diaphragm lever to “
”
One side of the image is
blurred
The objective is not in the center of the light
path
Insure the nosepiece is in the “clicked”
position
The specimen is not correctly mounted on the
stage.
Place the specimen on the stage correctly.
The optical performance of the culture vessel
bottom plate is poor (profile irregularity, etc.)
Use a vessel with a good profile irregularity
characteristic.
