Versión/Version 1; Jul 2017
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and cover glasses). Slides and cover glasses should be clean. Check that the slide is
properly located and there are not two cover glasses superimposed.
7.
Troubleshooting
Before sending the microscope back to Technic Technical Assistance Department you should
check the following:
If the lamp does not switch on:
Check it is properly connected to the right current intake.
Check both fuse and lamp are in good conditions. If not you should replace the fuse.
If the field of vision is cut:
Check the nosepiece is properly fit. To do that, turn it slightly back and forth until it fits.
If there is dust or dirt in the field of vision:
Check there is dust on the precondenser's lens, upper lens of the condenser or the eyepiece,
as well as the cleanliness of the sample. Once you find out where the dirt is you should clean it
as explained before.
If the sample gets fuzzy while observing:
Check the tension adjusting ring, as it may be too weak and provoke an involuntary fall of the
stage.
If an area in the field of vision is out of focus:
Check the objective is properly located on the luminous beam's path. If not you should turn it
until it is appropriate position.
Check the sample is properly located on the stage, making sure it is held by the stage clips.
Then, if it does not focus you should revise the pre-focusing control.
If the frontal lens of the objective touches the prepared slide when focusing:
Check the prepared slide is not the other way round (being the cover glass over the slide) and
place it properly in case it is appropriate to do so. Check also the slide's thickness, which has to
have a standard thickness of 0,17 mm.
