| I cant turn on my COWON J3. | COWON J3 | 2010/06/16 |
| The touch pad and buttons do not work properly. | COWON J3 | 2010/06/16 |
| Memory capacity of the player is different or smaller than specified. | COWON J3 | 2010/06/16 |
| There is too much noise in my recordings. | COWON J3 | 2010/06/16 |
| AC adapter is not included in the Package. | COWON J3 | 2010/06/16 |
| How can I display lyrics? | COWON J3 | 2010/06/16 |
| Computer cannot recognize the player when connected to PC. | COWON J3 | 2010/06/16 |
| FM Radio does not work. | COWON J3 | 2010/06/16 |