Chevrolet 2007 Optra Owner's Manual page 181

AST (Automatic Store)
Six FM1 preset stations with the strongest reception
in the region can be automatically stored. Press the
AST button for more than two seconds. The display
shows AUTO SCANNING and then SCANNING
flashes on the display. Once the stations are stored,
the radio switches to FM1 and the first preset
station begins to play. FM-A displays while listening
to the automatic stored stations. Press the AM or
FM button to cancel automatic store.
Setting Preset Stations
Up to 24 stations (six FM1, six FM2, six AM1, and
six AM2), can be programmed on the six numbered
buttons, by performing the following steps:
1. Turn the radio on.
2. Press the AM or FM button to select FM1,
FM2, AM1 or AM2.
3. Tune in the desired station.
4. Press and hold one of the six numbered
buttons for more than two seconds. The
preset button number one through six flashes
on the display when the station has been
set. Whenever that numbered preset button is
pressed, that preset station returns.
5. Repeat the Steps 1 through 4 for each preset
button.
Order of Sound Function
The order for displayed sound function is
BASS, TRE, BAL, FADE, EQ OFF, and VOL
(Bass, Treble, Fade, Balance, Equalization Off,
and Volume).
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