Problem |
Likely
Reason |
Solution |
Image is not
appearing |
Batteries are dead |
Insert new batteries |
Image is not
appearing |
Contact has been cut
off between the batteries and the connection points |
Restore the poor
contacts |
Image is not
appearing |
Lens cap is still on |
Remove lens cap
[provided the natural environment is dark] |
Projected image is
dim |
Battery current is
low |
Insert new batteries |
Projected image is
dim |
Natural illumination
level is low |
Switch on the IR
illuminator |
Projected image is
cloudy |
Objective lens is
dirty |
Clean objective lens
with very fine cloth soaked in alcohol |
Projected image is
cloudy |
Focus is distorted |
Focus in on object,
or if too close to the object, move back |