The unit does not start.
Batteries are not inserted properly or are dead.
Reinsert the batteries correctly or replace with
new alkaline batteries.
Internal memory error.
Format (initialize) the internal memory and then
Buttons do not respond.
The hold function is set.
Turn off the function.
The USB cable is still connected.
Disconnect the USB cable.
The volume is turned down too low.
Adjust the volume.
Files in the VOICE (A, b, C, d) folder cannot be played.
The file name is wrong.
Changing files names using your PC will render
files unplayable. Return the file name to
"IC_X(folder name)_XXX (file number).MP3".