Chevrolet 2006 Optra Owner's Manual page 182

If there is no apparent damage, try a known good CD.
Do not add any label to a CD, it could get caught in the
CD player. If a CD is recorded on a personal computer
and a description label is needed, try labeling the top of
the recorded CD with a marking pen instead.
Notice: If you add any label to a CD, insert more
than one CD into the slot at a time, or attempt
to play scratched or damaged CDs, you could
damage the CD player. When using the CD player,
use only CDs in good condition without any
label, load one CD at a time, and keep the CD player
and the loading slot free of foreign materials,
liquids, and debris.
If an error appears on the display, see "CD Messages"
later in this section.
All of the CD functions work the same while playing an
MP3WMA, except for those listed here. See "Playing
a CD" earlier for more information.
SCROLL (MP3/WMA Mode Only): Press the SOUND
button for longer than two seconds. The song title
and other available information of the song will scroll
on/off. The offset is scroll on. The scroll mode can
be changed only when the SOUND button is pressed
for longer than two seconds.
3-72
1 DIR (Directory): Press this button to repeat the
tracks in the current directory. DIR will appear on the
display.
Press this button again to repeat the tracks in all of the
directories. ALL will appear on the display.
Press this button again to turn off repeat play.
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SEEK (Previous/Next Folder) (in MP3/WMA
Mode): Press the up or down arrows to change
the folder. If CD-R don't have any folder, "ROOT" will
flash on display for a short time.
( )
TUNE (Previous/Next Track): Press the
down arrows to go to the start of the current track
or press the up arrows to go to the next track. The track
number will appear on the display. The player will
continue moving backward or forward through the CD
with each press of the up or down arrows.
INFO/DISP (Information/Display): Press this button to
display additional text information related to the
current MP3/WMA song. A choice of additional
information such as: Song Title, Album Title, and Artist.
Bit rate may also appear on display.
When information is not available, No Info will appear
on the display.
Press this button for longer than two seconds to change
display mode.