20
(6) The eyes feel
tired easily. The
right field of view
doesn’t superpose
with the left.
Interpupillary distance is wrong.
Adjust the interpupillary distance.
Diopter adjustment is wrong.
Adjust the Diopter.
2. Mechanical Part
(1) Cannot get the
objective focused in
high magnification.
The cover glass faces down.
Put the cover glass to face up.
The cover glass is too thick.
Use a standard cover glass with
thickness 0 or 0.17mm.
(2) The objective
touches the cover
glass while turning
the nosepiece from
low to high
magnification.
The cover glass is not standard.
Use a standard cover glass with
thickness 0 or 0.17mm.
(3) Coarse focusing
knob is too tight.
Tension knob is too tight.
Loosen a little.
(4) Stage declines
itself, cannot stay
on the focal plane
when observing.
Tension knob is too loose.
Tighten a little.
(5) Coarse focusing
knob can’t decline.
The base of the condenser is too
low.
Raise the base.
(6) The slide cannot
move smoothly.
The slide is not fixed correctly.
Adjust it correctly.
The stage is fastened incorrectly.
Fasten the stage correctly.
3. Electrical Part
(1) The LED light
does not work.
No power supply.
Check the connection of the
power cable.
The
bulb
is
not
installed
correctly.
Install it correctly.
The plug-in of LED light is not
connected well.
Connect it correctly.
The LED lights burnt out.
Replace it.
(2) The bulb burnt
out very often.
A wrong bulb is used.
Replace it with a correct one.
(3) The field of
view is not bright
enough.
A wrong bulb is used.
Replace it with a correct one.
The use of light adjustment knob
is wrong.
Adjust correctly.
4. LED Fluorescence Device Part
