Troubleshooting - JC LAB Bimc-04ns05 Operation Manual

8.0 Troubleshooting

Review the information in the table below to troubleshoot operating problems.
PROBLEM
I. Optical Section:
LED operates, but field of view remains dark. Power Plug no connect
Dirt or dust is visible in the field of view.
Image looks double
Visibility is poor.
• Image is not good.
• Contrast is poor.
• Details are indistinct.
• Image glares
One side of the image is out of focus.
II. Mechanical Section:
The focus knob is hard to turn.
The focus is unstable.
III. Observation tube
Field of view of one eye does not match that
of the other.
CAUSE
Brightness is too low
Dirt/dust on the specimen
Dirt/dust on the eyepieces
Aperture diaphragm is stopped
down too far
Dust or dirt on lenses (objectives,
eyepieces)
Focus is not even
The specimen is out of place (tilted) Place the specimen flat on the stage.
The tension adjustment collar is
too tight
The tension adjustment collar is
too loose
Interpupillary distance is incorrect.
Incorrect diopter adjustment.
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SOLUTION
Put the plug to the microscope
Set brightness to a proper level
Clean the specimen
Clean the eyepieces
Open aperture diaphragm
Clean thoroughly
Slide holder is not flat. Move the specimen to a
flat position
Loosen the tension adjustment collar
Tighten the tension adjustment collar
Adjust interpupillary distance.
Adjust diopter.