Getting Started
Returning to the factory settings [Reset All Settings]
You can reset your “WALKMAN” to the default settings. Resetting your “WALKMAN” will not delete data such as music, video, and photos.
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From the Home menu, select
[Settings] 
[Common Settings] [Reset/Format] [Reset All Settings] [Yes].
Note
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If you select this function during playback, your “WALKMAN” will pause playback before performing the reset process.
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Resetting your “WALKMAN” will delete pairing information of Bluetooth devices.
