Optika Italy SZ-STL1, Instruction Manual

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Page 50
12. Troubleshooting
Review the information in the table below to troubleshoot operating problems.
PROBLEM CAUSE SOLUTION
I. Optical Section:
The illumination is ON, but the field of
view is dark.
The plug is not connected to the illu -
mination
Connect the cable
The brightness is too low Adjust to a proper setting
The edge of the field of view is vignetted
or the brightness is asymmetric.
The incident illuminator is not correctly
oriented
Change the angle of the incident illu -
minator
Dust and stains can be seen in the field
of view.
There are stains and dust on the spec -
imen
Clean the specimen
There are stains and dust on the eye -
piece
Clean the eyepiece
Poor image quality:
• The image is not sharp
• The contrast is not high
• The details are not clear
• Image glares
The lenses (additional lens, objective,
eyepieces) are dirt
Throughly clean all the optical system
One side of the image is out of focus. The specimen is out of place (tilted) Place the specimen flat on the stage.
II. Mechanical Section:
The focus knob is hard to turn. The tension adjustment collar is too
tight
Loosen the tension adjustment collar
The focus is unstable. The tension adjustment collar is too
loose
Tighten the tension adjustment collar
III. Electric Section:
The LED doesn’t turn on. No power supply Check the power cord connection
The brightness is not enough The brightness adjustment is low Adjust the brightness
The light blinks The power cord is poorly connected Check the power cord
IV. Viewing tube assembly:
The field of view of the two eyes is dif -
ferent
The interpupillary distance is not cor -
rect
Adjust the interpupillary distance
The diopter correction is not right Adjust the diopter correction
The viewing technique is not correct,
and the operator is straining the eye -
sight
When look into the eyepieces, do not
stare at the specimen but look at the
whole field of view. Periodically, move
the eyes away to look at a distant ob -
ject, then back into the eyepieces
V. Microphotography and video:
The image is unfocused Incorrect focusing Adjusting the focus system as in the
present manual
Bright patches appear on the image Stray light is entering the microscope
through the eyepieces and through the
camera viewfinder
Cover the eyepieces and the viewfind -
er with a dark cloth