40
Earphones
do not
work
Make sure the
headset is
connected
properly;
Check if the
volume level is
raised sufficiently;
Recordings or MP3
files maybe
corrupted; the
files possibly
playback at
different levels,
and may also have
no sound
altogether
Connect
earphones ;
Adjust volume;
Check to see
whether the
recording or MP3
file is damaged or
not.
Unable to
upload /
download
Check whether the
USB cable is
damaged or
whether the USB
Ensure that the
USB cable is not
damaged;
