| 摘要 |
PURPOSE:To prevent an automatic playing mode from being selected when there are no playing data by executing control so that the selection of the automatic playing mode by a selecting means is made impossible when it is detected that there are no playing data by a detecting means. CONSTITUTION:The presence and absence of the playing data in a playing data memory 62 is detected by a detecting means 73 and when it is detected there are no playing data by this detecting means 73, the control is executed by a CPU72 so that the selection of the automatic playing mode by the selecting means can be impossible. Accordingly, when the playing data are not recorded in the memory 62, the automatic playing mode can not be selected. Thus, an operator is prevented from executing operation for automatic playing although there are no playing data. |
