Optika Italy ECOVISION B-20CR, Инструкция по эксплуатации

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10. Troubleshooting
Review the information in the table below to troubleshoot operating problems.
PROBLEM CAUSE SOLUTION
I. Optical Section:
LED operates, but field of view remains
dark.
Power supply is unplugged. Connect
Brightness is too low Set brightness to a proper level
Batteries discharged Charge the batteries
Dirt or dust is visible in the field of view. Dirt/dust on the specimen Clean the specimen
Dirt/dust on the eyepieces Clean the eyepieces
Image looks double Aperture diaphragm is stopped down
too far
Open aperture diaphragm
Visibility is poor.
• Image is not good.
• Contrast is poor.
• Details are indistinct.
• Image glares
Revolving nosepiece is in an incorrect
position
Move the nosepiece to a click stop
Aperture diaphragm is too closed or to
open
Adjust aperture diaphragm
Dust or dirt on lenses (condenser, ob -
jectives, eyepieces and slide)
Clean thoroughly
For transmitted light observation, the
coverglass thickness must not exceed
0.17 mm
Use a coverglass with thickness 0.17
mm
Focus is not even Slide holder is not flat. Move the speci -
men to a flat position
One side of the image is out of focus. The nosepiece is not in the center of
the light path
Turn the nosepiece to a click stop
The specimen is out of place (tilted) Place the specimen flat on the stage.
The optical performance of the sample
cover glass is poor
Use a cover glass of better quality
II. 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