Instructions / Assembly

• If using an external power source, verify that
it is properly connected between the 9-volt
connector and wall plug (AC source) .
• If AudioStar does not respond to commands,
move the power switch to OFF and then back
to ON.
• If the telescope does not slew after power is
applied or if the motor quits or stalls, verify that
there are no physical obstructions that would
impede telescope movement.
• If all physical obstacles are removed and the
telescope still does not move properly, turn
off the power and unplug AudioStar. Plug
AudioStar back in and turn the power back on.
Unable to see an image through the eyepiece:
• Conrm that the lens cover has been removed
from the telescope.
• Conrm that the ip-mirror control (Pg 15,
Fig. 6, 14) is in the “up” position if using the
eyepiece holder (Pg 14, Fig. 5, 3 so that light
is directed to the eyepiece. Conrm that the
ip-mirror control is in the “down” position if
using the #932 or #933 Erecting Prism or doing
photography with an ETX model.
Object appears in the viewnder but not in the
eyepiece:
• The viewnder is not properly aligned
with the telescope (see ADJUSTING THE
VIEWFINDER, page 9).
Slew speed does not change when you change
slew speeds or the telescope moves slowly even
though the fast slew speed is chosen:
• The battery power may be low. Replace all
batteries with fresh, new units.
Telescope does not track a celestial object:
• Make sure that the telescope is correctly
aligned. See Easy (Two-Star) Align, page 11,
for more information.
When transporting the telescope, take care not to
bump or drop the instrument; this type of abuse can
damage the optical tube and/or the objective lens and
knock the optics out of alignment.
Inspecting the Optics
A few words about the so-called “ashlight test”: If a
ashlight or other high-intensity light source is pointed
down the main telescope tube, the view (depending
upon the observer’s line of sight and the angle of the
light) may reveal what appear to be scratches, dark or
bright spots or uneven coatings, giving the appearance
of poor quality optics. These effects are only seen
when a high intensity light is transmitted through lenses
or reected off the mirrors and can be seen on any
high-quality optical system, including giant research
telescopes.
The optical quality of a telescope cannot be judged by
the “ashlight test"; the true test of optical quality can
only be conducted through careful star testing.
Troubleshooting
The following suggestions may be helpful with
operation of the ETX Observer telescopes.
The power indicator light on the telescope does not
come on or there is no response when pressing
the AudioStar Arrow keys:
• Verify that the Computer Control panel power
switch (Pg 15, Fig. 11, 12c) is in the ON position.
• Verify that the AudioStar coil cord is rmly
connected to the HBX port (Pg 15, Fig. 11,
12a).
• If using internal power (batteries), verify that
the batteries are installed correctly and that
they have sufcient charge (see Installing the
Batteries, page 7).
Note: If the batteries are getting low on charge,
there will be a marked difference in the slew
speed. The speed indicator lights may also
ash and the speed may change. If any of
these symptoms occurs, turn the power off and
replace the batteries.
48
MAINTENANCE