See also:

How to insert a CD (type A, C and D)
Hold a disc with a finger in the center hole while gripping the edge of the disc, then insert it in to the slot (with the label side up) and the player will automatically pull the disc into po ...

For U.S.A
The following information has been compiled according to Code of Federal Regulations “Title 49, Part 575”. ...

Power switch and volume control
Type A and B audio Type C audio The dial is used for both power (ON/OFF) and volume control. The radio is turned ON and OFF by pushing the dial, and the volume is controlled by turning the dial. ...