20
PROBLEM
REASON FOR PROBLEM
SOLUTION
II
、
Mechanical Part:
1
、
The coarse focus
knob is hard to run
The tension adjustment collar is too
tight
Loose properly
2
、
The image can’t
stay on the focal
plane in the process
of the observation
The tension adjustment collar is too
loose
Tighten properly
III
、
Electric Part:
1
、
The lamp can’t
light
No power supply
Check the power cord, and connect
them exactly
the installation of the bulb is wrong
Install the bulb correctly
The bulb burn out
Change a new bulb
2
﹑
The bulb burn out in
a high frequency
Not use the specified lamp
Use the required lamp
3
﹑
The height of the
brightness is not enough
Not use a appointed lamp
use a appointed lamp
The brightness adjustment knob is
used wrong
Adjust the brightness adjustment
knob in a correct way
4
﹑
The light glimpse
The bulb is going to spoil
Change the bulb
The power cord have a poor contact
Check the power cord, and connect
them exactly