| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: an output amplifier for outputting an audio signal to an earphone plug is sometimes broken when the audio signal is output to an earphone jack in which a short circuit is caused between terminals by a conductor such as water.SOLUTION: When a conductor such as water intrudes into an earphone jack from an earphone plug insertion opening, notification is provided at a stage before an output circuit starts output of an audio signal to an earphone plug. |
