Lenovo C1530 Manual Del Usuario página 6

Problems
Soundless
One side of
the speaker is
soundless.
Buzz or low-
frequency noise
20110524_LX-8451_C1530_manual.indb
Possible Causes
• USB power source is not
properly plugged.
• The speaker is not properly
connected.
• Input/output lines are not
properly connected.
• Input mode is wrongly chosen.
• The speaker's terminal is
short-circuited.
• USB power is insufficient.
• The speaker is not properly
connected.
• Input is not grounded or not
properly grounded.
5
Solutions
• Plug the USB power source
correctly.
• Check the connection of the
speaker.
• Connect input/output lines correctly.
• Choose the right input mode.
• Connect the speaker before turning
on the machine again.
• With some computers, the speaker
connected with one USB interface
occasionally doesn't produce
sound. This is generally attributed
to insufficient power supply of the
USB terminal. The problem may
be solved by plugging into another
USB interface.
• Check the connection of the
speaker.
• Reconnect or examine the signal
lines. If the problem persists after
it is confirmed that the connection
and signal lines are normal, then
generally the problem is caused by
crosstalk between the audio and
USB terminal of the computer, and
you are advised to reduce noise by
moderately decreasing the volume
of the woofer. In addition, you are
advised to keep the speaker more
than 30cm away from your head
to ensure that you can enjoy the
optimal sound effects.
5
2011-6-13 15:43:50