[CANNOT PLAY] is displayed.

You are trying to play a file that cannot be played back on your Walkman. See “Supported formats” for details on the supported formats and bit rates.

[Unable to set photo as wallpaper.] is displayed.

You are trying to set a photo that is too large as wallpaper.

Reduce the file size of the selected photo.

[Firmware update failed.] is displayed.

Updating the firmware failed to complete.

Follow the instructions displayed on your computer to retry updating the firmware.

[Check the volume level] is displayed.

An alarm (beep) and warning [Check the volume level] are meant to protect your ears when you raise the volume setting beyond a specific level (*1) for the first time.

• You can cancel the alarm and warning by pressing any button.
• You can turn up the volume beyond the specific level (*1) after canceling the alarm and warning.
• After the initial warning, the alarm and warning repeat for every 20 cumulative hours that the volume is set beyond the specific level (*1); when this happens, the volume is changed to the initial setting automatically.

  ^(*1) Specific level = 14