Read JBL SCS 188 User Guide / Operation Manual online
8
If there is no sound from any of
the speakers:
• Check that receiver/amplifier
the speakers:
• Check that receiver/amplifier
is on and a source is playing.
• Check that the powered
subwoofer is plugged in, its
Power switch ¡ is switched
on to the “ON•” position.
Power switch ¡ is switched
on to the “ON•” position.
• Check all wires and
connections between
receiver/ amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires are
frayed, cut or punctured.
receiver/ amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires are
frayed, cut or punctured.
• Review proper operation of
your receiver/amplifier.
If there is no sound coming
from one speaker:
• Check the “Balance” control
from one speaker:
• Check the “Balance” control
on your receiver/amplifier.
• Check all wires and con-
nections between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
• In Dolby Digital or DTS
®
modes, make sure that the
receiver/processor is
configured so that the
speaker in question is
enabled.
receiver/processor is
configured so that the
speaker in question is
enabled.
If there is no sound from the
center speaker:
• Check all wires and
center speaker:
• Check all wires and
connections between
receiver/
amplifier and speaker. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
receiver/
amplifier and speaker. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
• If your receiver/processor is
set in Dolby Pro Logic mode,
make sure the center speaker
is not in phantom mode.
make sure the center speaker
is not in phantom mode.
• If your receiver/processor
is set in Dolby Digital or DTS
®
mode, make sure the
receiver/processor is con-
figured so that the center
speaker is enabled.
receiver/processor is con-
figured so that the center
speaker is enabled.
If the system plays at low
volumes but shuts off as
volume is increased:
• Check all wires and connecti-
volumes but shuts off as
volume is increased:
• Check all wires and connecti-
ons between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
• If more than one pair of main
speakers is being used, check
the minimum impedance
requirements of your
receiver/amplifier.
the minimum impedance
requirements of your
receiver/amplifier.
If there is low (or no) bass
output:
• Make sure the connections to
output:
• Make sure the connections to
the left and right “Speaker
Inputs” have the correct
polarity (+ and –).
Inputs” have the correct
polarity (+ and –).
• Make sure the subwoofer is
plugged into an active
electrical outlet.
electrical outlet.
• Make sure the powered
subwoofer is plugged in and
switched on.
switched on.
• In Dolby Digital or DTS
®
modes, make sure your
receiver/processor is
configured so that the
subwoofer and LFE output are
enabled.
receiver/processor is
configured so that the
subwoofer and LFE output are
enabled.
If there is no sound from the
surround speakers:
• Check all wires and
surround speakers:
• Check all wires and
connections between
receiver/ amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires are
frayed, cut or punctured.
receiver/ amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires are
frayed, cut or punctured.
• Review proper operation of
your receiver/amplifier and its
surround-sound features.
surround-sound features.
• Make sure the movie or TV
show you are watching is
recorded in a surround-sound
mode. If it is not, check to see
if your receiver/ amplifier has
other surround modes you
may use.
recorded in a surround-sound
mode. If it is not, check to see
if your receiver/ amplifier has
other surround modes you
may use.
• In Dolby Digital or DTS
®
modes, make sure your
receiver/processor is
configured so that the
surround speakers are
enabled.
receiver/processor is
configured so that the
surround speakers are
enabled.
• Review the operation of your
DVD player and the jacket of
your DVD to make sure that
the DVD features the desired
Dolby Digital or DTS
your DVD to make sure that
the DVD features the desired
Dolby Digital or DTS
®
mode,
and that you have properly
selected that mode using both
the DVD player’s menu and
the DVD disc’s menu.
selected that mode using both
the DVD player’s menu and
the DVD disc’s menu.
T R O U B L E S H O O T I N G
Click on the first or last page to see other SCS 188 service manuals if exist.