Troubleshooter
ELECTRICAL
PROBLEM
CAUSE
SOLUTION
Bulb does not work.
Plug outlet does not work.
Cable not connected.
Bulb burned out.
Wrong bulb.
Repair by a qualified specialised
technician.
Connect cable.
Replace bulb.
Replace by the correct bulb.
Bulb burns out in short
time.
Voltage too high.
Reduce light intensity to a minimum
before turning the microscope on or off.
IMAGE QUALITY
PROBLEM
CAUSE
SOLUTION
No image.
Nosepiece not positioned properly.
Image too bright.
Turn until clicks into place.
Reduce the intensity of the light.
Poor resolution.
Dirty objective.
Dirty eyepiece.
Slide upside down.
Wrong cover slip used with slide.
Light too bright.
Dirty condenser.
Clean objective.
Clean eyepiece.
Replace the slide with the cover slip
facing upwards.
Use 0.17mm thick cover slips.
Reduce light intensity or adjust the
diaphragm aperture.
Clean condenser.
Spots in field of view.
Dirty eyepiece.
Dirty slide.
Dirty condenser.
Clean eyepiece.
Clean preparation.
Clean condenser.
Uneven illumination of field. Nosepiece not positioned properly.
Diaphragm aperture not sufficiently
open.
Turn until clicks into place.
Adjust appropriately.
MECHANICAL
PROBLEM
CAUSE
SOLUTIÓN
It does not stay in focus.
The stage is sliding down on its own. Adjust the tension of the coarse focus
knob.
It does not focus.
The stopper on the ascending
movement of the stage needs
adjusting.
Readjust the stopper.
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