1. The player does not work or nothing is displayed on the LCD.
Check the capacity and the polarity of the battery.
The player will automatically shut down to save power if it is left idle for
2. The buttons are not responding.
Check if the "Hold" button on the main unit is locked. If yes, buttons will
have no response.
3. Unable to play MP3 file.
Check if the memory contains any MP3 files.
Check if the player is in Music Mode.
Check if the MP3 player supports the format of the stored files.
4. Unable to play ADPCM
Check if the memory contains any VOC files
Check if the player is in Voice Mode.
5. Unable to record via line-in.
Check if there is enough space in the selected memory.
Check if cable is stereo and connected to the device properly.
6. A-B looping function is not working.
This function only works during playback.