Bresser ASTRO PLANETARIUM Mode D'emploi page 20

Troubleshooting
It can happen that your Astro-Planetarium doesn't work properly. That does not mean that there is something wrong with the machine! It is often the
case that a small detail was forgotten while you were setting up. For that reason, we have compiled the most common mistakes here so that you can
try to fix the problem yourself.
Problem
I can't turn on the planetari-
um.
The projected image is distor-
ted, not completely round.
The projected image is
fuzzy.
The projected image is
showing flecks.
20
Possible Mistake
The batteries could be improperly in-
stalled.
Maybe the batteries are empty.
Maybe the objective lens is not per-
fectly parallel to the projection surface
(wall or ceiling).
The distance to the projection surface
(wall or ceiling) is perhaps too small.
The focus may not be adjusted pro-
perly.
The objective lens is dirty.
Check to see whether the batteries are placed in exactly the way described
in the instructions. Pay special attention to the directions of the terminals
(+/-).
Install new, unused batteries as directed in the instructions. Pay special at-
tention to the directions of the terminals (+/-).
Try to arrange the planetarium in the pedestal so that the objective lens is
parallel to the projection surface.
The planetarium be at least 1.8 to 2 m away from the projection surface.
Check to see whether the distance is right and correct it if necessary.
Try to improve the focus of the image by turning the focus knob i .
Clean the objective lens with a clean, lint-free cloth, as described in the
instructions.
Solution