15
• System 7 with THX
®
Select 2
TM
certifi cate
Troubleshooting
The following advice should help you to solve problems. If this doesn’t work, the extensive FAQs on our website will pro-
vide you with further support. Otherwise, please contact our hotline (see page 3). Take note of the warranty instructions.
Problem
Possible cause
Solution
The subwoofer isn’t active,
the operation display
10
is
not on.
The subwoofer is off or doesn’t have any
power.
Activate the switch
6
(“On I”). Check the
power cord and socket.
Fuse is defective.
Replace the fuse: Discon-
nect the power cord.
Carefully pull the fuse
holder
8
on the mains
connection jack
7
out.
Push the old fuse down
and out. If applicable,
insert a new fuse (2 A
time-delay), close the
holder.
The subwoofer is not
working, but the operation
display
10
is on.
The volume has been set too low.
Increase the volume with the button
14
.
The subwoofer hums.
The subwoofer is connected to another
circuit than the rest of the system.
Connect the subwoofer and AV receiver to
the same circuit.
The buzzing is caused by problems with
the power supply.
Buy a line fi lter and connect both units to it.
The buzzing is caused by a multiple
socket.
Use another multi-outlet power strip or con-
nect the subwoofer directly to the wall socket.
It may also help to insert the power plug the
other way around.
Playback is noisy.
Generally speaking, the System 7 is a
very low-noise system. In most cases, the
speaker system with exceptional resolution
in the high range area can expose the
poor quality of a signal source (e.g. from
MP3 fi les).
Ensure that the source is sending a clear
signal.
The sound seems dull.
A satellite has been connected with incor-
rect polarity.
Make sure the speaker cables of all satellites
are connected properly.
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