Control system for disc playing device

A control system for controlling the operation of a disc playing device comprising:

• a rotatable magazine having a plurality of disc holding grooves, the grooves being formed generally radially around a central axis;
• a mechanism for drivingly rotating the magazine;
• disc insertion-discharge means and playing means which are provided alongside the path of rotation of the magazine and arranged away from each other at separate locations alongside the path of rotation;
• a first delivery device for transferring discs between the disc insertion-discharge means and the magazine;
• a second delivery device for transferring the discs between the playing means and the magazine;
• an openable and closable door provided for the disc insertion-discharge means having a vertically elongated hollow cylinder with a vertically elongated slit for the discs to pass therethrough, and rotated by a motor between a first position which allows the discs to pass through the slit and a second position which does not allow the discs to pass through the slit;
• means for detecting closing of the door;
• and
• means for permitting rotation of the magazine only when closing of the door has been detected by the door closing detecting means.