Sony SupportMobile CD Players & Digital Media Players

    Article ID : 00299436 / Last Modified : 08/28/2025Print

    When a USB mass storage device is connected to the car stereo, the device is not recognized, or the car stereo releases an error and cannot play back the music.

    An error, such as No Music, Device Error, No Device, or No Support, appears.

    Follow these steps to resolve the issue on your car stereo. Not all car stereo receivers have USB capabilities. Check your manual for model-specific information. Manuals are posted on your model support page.

    • If the device isn't recognized, remove the USB device and then re-insert it.
    • Make sure that your device is set to the required mode before connecting it to the car stereo.
      • Some USB devices need to be in a specific mode (such as a Mass Storage Class or Player mode, etc.) before you can use the USB device for playback.
      • Check the specifications of the USB device or contact the manufacturer for information.

    • If the NO DEV or No Device error message appears, follow these steps below accordingly:

      • If there's a USB device connected:
        1. Disconnect the USB cable from the car stereo and wait for approximately one minute.
        2. Reconnect the USB cable to the car stereo.
      • If there's no USB device connected:
        1. Turn the power off on the car stereo wait for approximately one minute.
        2. Turn on the car stereo.
    • If the NO SUPPORT, NO SUPRT or --:-- error message appears, refer to this article.

    Note: If you have the RSX-GS9:

    • Check the system requirements of the USB device and check whether the USB device is operating properly.
    • Check that the root directory of the USB device contains a Music folder and that the folder contains playable music files (excluding iPhone® mobile devices and iPod® digital music players).
    • Check if the names of music files include special characters.