9
5. Troubleshooting
In the period of using MDJ microscope, if there is any trouble occurs,
please referring to the following sheet listed some common
troubleshooting resolve them.
Trouble
Causation
Remedy
Switch on but
bulb dark
Plug is unreliable
Plug in again
Bulb is bad
Change bulb
Fuse is broken
Change fuse
Bulb is flickering
or brightness
is unsteady
Bulb is unstable
Insert it again
Bulb is broken
Replacing bulb
Brightness of view
field is not
enough or is uneven
Bulb specification doesn’t
meet
the requirement
Replacing bulb
Brightness isn’t adjusted
correctly
Adjust Rotation
potentiometer
Objective isn’t in correct
position
Make the objective in
correct position
The size of iris aperture is
too small
Adjust the size of
iris aperture
Lens (objective, eyepiece,
Condenser, light collector)
has dust
Clean it
Image isn’t clear
(contras or definition
isn’t enough)
Size of iris aperture
isn’t proper
Adjust the size of
iris aperture
Image observed by
two eyes aren’t in
superposition
entirely.
Interpupilary distance isn’t
adjusted correctly
Adjust
interpupilary
distance according
to two eyes
It is easy for eyes to
be tired during
observing
Diopter isn’t adjusted
correctly
Readjust diopter