See also:

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

Registering (pairing) device
1. Select the “PAIR AUDIO” (type C audio)/“Pair Audio Player” (type D audio) menu. If a device is already registered, “MEMORY FULL” is displayed and the mode changes to the Bluetooth® audio ...

When “PUSH EJECT” is displayed
Press the eject button to unload the disc. Check the disc for damage or deformation, and also check that the correct disc is inserted. Do not try to unload the disc forcibly. Single CDs (i.e., 8 c ...