| 摘要 |
<p>A power supply unit includes a transformer, and outputs a first power supply voltage which is used for logic processing and a second power supply voltage which is used for driving a drive unit. A voltage control unit includes a shunt regulator to a detection voltage input terminal of which is connected a voltage which has been voltage divided from the first power supply voltage, and controls the second power supply voltage to a predetermined voltage value. And a voltage application control unit applies a voltage which is determined in advance to the detection voltage input terminal of the shunt regulator, when the replay unit is in a stopped mode where replay by the replay unit of data recorded upon the optical disk is stopped.
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