Digital Media PlayerNW-A25/A25HN/A26HN/A27HN

Your Walkman does not recognize a microSD card that is inserted.

  • The microSD card (not supplied) is not inserted correctly. Remove the microSD card and reinsert it.
  • The contact pins of the microSD card are not clean. Clean the contact pins of the microSD card using a dry cloth or cotton bud and reinsert the microSD card.
  • The microSD card has been formatted in an unsupported format. Copy all data on the microSD card onto your computer and format the microSD card again using your Walkman.