Chevrolet 2006 Optra Owner's Manual page 169

Adjusting the Speakers (Balance/Fade)
SOUND (Balance/Fade): To adjust the balance
between the right and the left speakers, press this button
until BAL appears on the display. Turn the volume
knob to increase or to decrease. The display will show
the balance level. When finished making the selection,
press this button to set the balance level.
To adjust the fade between the front and the rear
speakers, press this button until FAD appears on the
display. Turn the volume knob to increase or to
decrease the fade between the front and the rear
speakers. The display will show the fade level. When
finished making the selection, press this button to set the
fade level.
Setting the Equalization
The order for customized equalization settings are EQ
OFF, CLASSIC, DANCE, ROCK, JAZZ, POP, VOICE,
TECHNO, EQ OFF.
SOUND (Equalization): Press this button until EQ OFF
appears on the display to select customized equalization
settings designed for classic, dance, rock, jazz, pop,
voice and techno. Turn the volume knob until the desired
equalization setting appears on the display. When
finished making the selection, press the SOUND button
to set the equalization setting.
To cancel an equalization setting, press the SOUND
button until EQ OFF appears on the display, turn
the volume knob until OFF appears on the display, then
press the SOUND button again to set the equalization
setting.
Playing a CD
Insert a CD partway into the slot, label side up. The
player will pull it in and the CD should begin playing.
You can insert a CD with the ignition off.
When the CD is inserted, CDP will appear on the
display. As the CD is loading Filecheck will appear on
the display. As each new track starts to play, Track and
the track number will appear on the display.
If the ignition or radio is turned off with a CD in the
player, it will stay in the player. When a CD is in
the player and the ignition is turned on, the radio must
be turned on before the CD will start playback. When
the ignition and radio are turned on, the CD will
start playing where it stopped, if it was the last selected
audio source.
The CD player can play the smaller 3 inch (8 cm) single
CDs with an adapter ring. Full-size CDs and the
smaller CDs are loaded in the same manner.
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