Sony NW-ZX300 Help Manual page 5

microSD Cards
The computer does not recognize the microSD card in the Walkman.
The Walkman does not recognize a microSD card.
Playing Music
A track is duplicated on the Walkman.
The Walkman cannot play transferred content.
Others
You have spilled liquid (water, coffee, etc.) on the Walkman.
You have washed the Walkman in a washing machine.
The Walkman does not work properly.
4-698-041-12(1) Copyright 2017 Sony Corporation
5