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14
The aperture and field iris diaphragm
are not opened enough
Open and adjust the aperture and field
diaphragm
Specimen rises from stage surface
Secure the specimen in the slide holder
Revolving nosepiece is not in the
click-stop position
Revolve the nosepiece to the click-stop
position
Lamp intensity is too high or low
Adjust the light intensity by rotating the
intensity control dial
Slippage of focus
when using the
coarse focusing
knob fine focus is
ineffective
Tension adjustment is set too low
Increase the tension on the focusing
knobs
Tension adjustment is set too high
Loosen the tension on the focusing knobs
