| 摘要 |
A replay device includes a flash memory, a setting means, and a test result output unit. A device key for copyright protection is recorded in the flash memory. When a predetermined actuation input is received, the setting means sets the device to a test mode in which it is tested whether or not the device key is recorded. And, when the test mode is set, the test result output means tests whether or not the device key is recorded in the flash memory, and outputs a screen with the result of the to test. Moreover, the test result output means displays the test result by changing a background color of the test result screen, according to the presence or absence of the device key.
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