The unit is in a mute status Cancel the mute
Volume set at a too low level Augment the volume
No sound at all
Cable connected incorrectly Connect the cable correctly
There might be a short circuit
Correct the output-cable
connection, and turn on it.
In mute status Cancel the mute
No sound by
chance
In standby mode Turn on the unit
Serious
distortion or
cannot receive
signal normally
Too much interferential signal Adjust the antenna.
The flash drive has not been
connected well
Connect the cable correctly.
The flash drive’s current is too
heavy, the product wouldn’t
afford it.
Provide external power source.
Flash drive can
not be read
The flash drive runs self-
protection program because of
external device short circuit.
Change the short circuit device
and restart the product.
