33
STEINDORFF
®
5. Troubleshooting
Under certain condition, some no-fault factors will bring a reversible influence to the instrument’s
performance. If the problem is happened, please take proper measures according to the follow table. If you can’t
solve the trouble by the supplied methods, please contact with the sales department of our company.
PROBLEM
REASON
SOLUTION
I. Optical Part:
1. The illumination is
opening, but the field of
view is dark.
The plug of the lamp holder is not connected
into the illumination set
Connect them well
The bulb burnt out
Change a new lamp
The brightness is too low
Adjust to a proper position
The color filter is piled too much
Minimize the number of the filters
No use the appointed lamp bulb
Use the specified halogen Lamp 6V30W
2. The edge of the field
of view has shadow or
the brightness is
asymmetry
The nosepiece is not in the located position
Turn the nosepiece into the position where
you can hear “clicked”
the color filter is stopped midway
Insert deeply
The phase contrast slider is not located in the
proper position
Turn the slider into the “clicked” position
3. Find dust and stain in
the field of view
There are stains on the specimen
Change a clean specimen
There are stains and dust on the eyepiece
Clean the eyepiece
4. Appear double image
the size of the aperture diaphragm is too small
Open up the aperture diaphragm
5. Resolution problems:
Image is not
sharp
；
The contrast is not
high
；
The detail is not
clear
；
Don’t obtain the
phase contrast
effect
The nosepiece is not in the center of the light
path
Ensure the nosepiece is turned into the
“clicked” position
the aperture diaphragm in the view of field is
opened too large or too small
Adjust the aperture diaphragm correctly
The lens (condenser, objective, ocular or
culture dish) become dirty
Clean all
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 bright field objective
Change to the phase contrast objective
The condenser ring is not coincident with the
objective phase ring
Adjust the condenser ring to match the
objective phase ring
The light ring and the phase contrast kits is not
centered
Adjust the bolts to center them
The objective used is not fit to the 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 each other
Moving the culture dish until you obtain
phase contrast effect. You also can demount
the slider, dail the field diaphragm with the
direction of “
”
6. One side of the image
is unfocused
The nosepiece is not in the center of the light
path
Insure the nosepiece is in the “clicked”
position
The specimen don’t place properly
Place the specimen on the stage correctly.
The optical performance of the culture dish
bottom is poor (such as erode figure and soon)
Please use a regular culture dish
