Altec Lansing MX5021 Mode D'emploi page 6

Symptom Possible Problem
No sound from Power isn't turned on.
one or more
speakers.
Volume is set too low.
Audio cable isn't connected to audio source.
Audio cable is connected to wrong output on audio
source.
Problem with audio source device.
Crackling sound Bad connection.
from speakers.
Problem with your audio source device.
Sound is Volume level set too high.
distorted.
Sound source is distorted.
Radio Too close to a radio tower.
interference.
No sound Subwoofer volume set too low.
from subwoofer.
Sound source has little low-frequency content.
Low hum The AC in your house is at 60 cycles per second, which
from subwoofer. is within the audio frequency of the subwoofer.
Loud hum Bad connection.
from subwoofer.
Volume on your audio source device set too high.
Not enough bass Bass setting is too low.
from subwoofer.
Bad connection.
Too much bass Bass setting is too high.
from subwoofer.
Distorted Subwoofer too close to monitor/TV.
monitor/TV.
Solution
Verify that the subwoofer's AC power cord is plugged into both the wall
outlet and subwoofer.
Verify that the Power button has been pressed and that a blue EQ LED
is illuminated.
Turn the rotary knob to the right to raise the system master volume.
Check volume level on the video gaming system or alternate audio source
device, and set at mid-level.
Connect audio cable from the audio source. Check plug connections on both
the subwoofer and audio source. Make sure these signal cables are inserted
firmly into the correct jacks.
Make sure that a cable connects the output jacks on the audio source to the
input jacks on the MX5021's subwoofer.
Test the speakers with another audio source.
Check all cables. Make sure they are connected to the "line-out" or
"audio-out" jacks on your audio source device.
Test the speakers using another audio source (e.g., VCR, DVD, portable CD
player, cassette player or FM radio).
Decrease the volume level on your MX5021's wired controller or the volume
level on your audio source (if possible.)
Try a different sound source like a music CD.
Move your speakers to see if the interference goes away. If not, you may be
able to purchase a shielded stereo cable from your local electronics shop.
Adjust the bass level on the wired controller or remote.
Try a game, movie or song—anything with more prominent bass tones.
Some low hum may be detected when your speaker system is powered on
without an audio source playing, or when the volume is set at an extremely
low level.
If you are using a surge protector with your MX5021 speaker system,
disconnect and plug the power adapter directly into an AC wall outlet.
Move your cables. Check to ensure they are making a clear connection.
Disconnect your stereo cable from the audio source. If the loud hum goes
away, lower the volume on the audio source.
Adjust the bass level on the wired controller or remote.
Verify that all cables are connected properly and are making a
clear connection.
Decrease the bass level on the wired controller or remote.
Because the subwoofer IS NOT magnetically shielded, it may cause distortion
if it is placed too close to your monitor/TV. Move the subwoofer so it's at least
2 feet from your monitor/TV.
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