BestScope International Limited
14
5
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Trouble shooting BS-6000A/AT
Some problems will happen in the using of the microscope, you could solve them according the following
list.
PROBLEMS REASON FOR PROBLEMS SOLUTION
I. Optical Part:
1. Illumination is on,
but the field of view
is dark.
The poor contact exists in the lamp house and
the illumination system.
Ensure the contact pin and the lamp holder
pin work well
The lamp bulb spoils change a new bulb
The brightness adjustment knob is set too
dark
Adjust the knob in a proper position
No use the appointed lamp bulb use the specified halogen L amp 6V20W
2. The edge of the
field of view has
shadow or the
brightness is
asymmetry
The nosepiece is not in the located position Adjust it into the located position
The surface of the lamp become black Change a new lamp bulb
The filament shadow not clean up
Move in Condenser adjust knob front and
back to change the focus position to clean up
the filament shadow.
The surface of the lens is moldy or has
contaminant
Clean the lens
3.
Find dust and stain
in the field of view
There are stains on the specimen Change the specimen
There are stains on the eyepiece Clean the eyepiece
4. The image is
defocus,
low-resolution
The objective damage
Mend and correct the objective (send to
factory for overhauling)
The lens of the objective and eyepiece is
moldy or have contaminant
Do cleaning
The opening of Aperture diaphragm and field
diaphragm is not proper, and too much
astigmatism.
Change the opening of the aperture
diaphragm and field diaphragm
Fine focus system is broken
Examine and repair the fine focus
system(send to factory for overhauling)
The objective is not in the center of the light
path
Turn the nosepiece to the located position
5. The image focus
surface incline(one
side is clear and the
other side is faint)
The illumination light incline serious
Adjust the filament position ,let the light
distributing of the field of view become
symmetrical and bright
The specimen don’t correctly place
Put the specimen on the right position
The nosepiece is not in the located position Turn the nosepiece in the required position
6. The eyes are
uncomfortable, the
left and right fields of
view is not
coincided .
The interpupillar distance is not correct Adjust the interpupillar distance correctly
The diopter is not right Adjust the diopter according your sight
Can’t adapt to binocular observation
When look into the objective, do not stare at
the specimen but at the whole field of view,
or move the eyes away to see other things,
then back into the objective
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