Manufacturing defects

CDs/DVDs may have manufacturing defects on the layer on which the digital information is recorded. Such CDs/DVDs cannot be played in the vehicle.

In the event of faulty playback, there is no fault in the CD/DVD changer. Because of the vibrations that occur, other demands are made on fault correction in the vehicle than in stationary operation.

In mobile applications, the control range of the laser tracking must therefore be limited in its capacity to compensate for surface flaws.