Optimus 120-2152 - Manual (Page 18)

If the CD player is jolted during play, the rotation speed might
suddenly change or the CD player might make an unusual noise. This
is not a malfunction.
PLAYING A CD
1. Press ON/OFF to turn on the stereo.
2. Insert a compact disc (label side up) in the slot. The stereo
displays CD, DISC IN, and TR:01 and the CD starts to play from
track 1.
If a CD is already in the CD player, simply press CD to play the
CD. The stereo displays CD, DISC IN, TR:, and the track number of
the track you last played, and the CD starts to play from the
point where you last stopped it.
After the stereo plays the entire CD, it automatically repeats all
tracks, starting with Track 1.
Note:
If a CD is loaded when you turn off your vehicle's ignition or the CD
player, you must wait about 5 seconds after you turn the ignition or
CD player back on before you can press CD to play a CD.
3. Press AUDIO CONTROL + or - to increase or decrease the volume as
desired.
Note:
See "Adjusting the Controls" on Page 16 for information about changing
the stereo's other settings.
4. To pause playback, press CD. The stereo displays PAU, DISC IN,
TR:, and the track number. To resume play, press CD again.
Note:
If you pause a CD for more than 5 minutes, the clock display appears.
5. To remove a CD from the CD player, press Up Arrow.
(new illus)