Digital Music PlayerNWZ-M504
There is no sound.
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Check that the volume level is not set to zero.
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Check whether the plug is inserted firmly in the headphone jack. Sound will be impaired if the headphones are not connected properly. Insert the plug until it clicks into place.
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If the plug is dirty, wipe it clean with a soft dry cloth.
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If you are listening to music on a smartphone via a Bluetooth connection, check that the volume of the smartphone is not set to zero.
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If there is no sound from a smartphone when listening to music on the smartphone via a Bluetooth connection, the Bluetooth connection may not have been made. Check that the pairing for making a Bluetooth connection is completed and the smartphone is
connected to your Walkman.
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If the problem persists after performing the remedies above, use a pen or paper clip, etc., to press the RESET button and reset your Walkman.