Lenovo M0520 Guia Del Usuario página 10

Simple troubleshooting
If you encounter any of the following issues while using this speaker system, refer to
the solutions below to resolve them. If the problem persists, contact your local dealer
for repair or call the Lenovo Service Center. To avoid electric shock or worsening the
problem, DO NOT attempt to perform repairs by yourself!
Problem description
No sound
One of the speakers is
mute
Abuzz sound or low
frequency noise
Possible cause
Bad connection with
the USB port
Improper connection
between the speaker
and the computer
Improper
input/output
connection
Wrong input mode
Short circuit in the
ports of the speaker
Insufficient power
supply
Misconnection
between the speaker
and the computer
Improper grounding
of the input cable or
bad connection
8
Solution
Ensure the proper and
firm connection to the
power supply plug
Check the connection
sites of the speakers
Ensure the proper
input/output connection
Choose a correct input
mode
Ensure proper
connection before
turning on the speakers
In some PCs, there may
occasionally be no sound
when the plug is inserted
into an USB port. This is
usually due to insufficient
power supply of the USB
port. Please try other USB
ports.
Check the connection
sites of the speakers
Reconnect or check the
signal cable. If both the
connection and the
signal cable are correct,