• If using an external power source, verify that
it is properly connected between the power
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:
&RQ¿UPWKDWWKHOHQVFRYHUKDVEHHQUHPRYHG
from the telescope.
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Fig. 6, 14) is in the “up” position if using the
eyepiece holder (Pg 14, Fig. 5, 3 so that light
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ÀLSPLUURU FRQWURO LV LQ WKH ³GRZQ´ SRVLWLRQ LI
using the #932 or #933 Erecting Prism or doing
photography with an ETX model.
2EMHFW DSSHDUV LQ WKH YLHZ¿QGHU EXW QRW LQ WKH
eyepiece:
7KH YLHZ¿QGHU LV QRW SURSHUO\ DOLJQHG
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
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ÀDVKOLJKWRURWKHUKLJKLQWHQVLW\OLJKWVRXUFHLVSRLQWHG
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
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high-quality optical system, including giant research
telescopes.
The optical quality of a telescope cannot be judged by
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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.
9HULI\ WKDW WKH $XGLR6WDU FRLO FRUG LV ¿UPO\
connected to the HBX port (Pg 15, Fig. 11,
12a).
• If using internal power (batteries), verify that
the batteries are installed correctly and that
WKH\KDYH VXI¿FLHQWFKDUJH VHH,QVWDOOLQJ WKH
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
ÀDVK DQG WKH VSHHG PD\ FKDQJH ,I DQ\ RI
these symptoms occurs, turn the power off and
replace the batteries.
48
MAINTENANCE
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