JBL Professional Performance BASSQ - Manual (Page 11)

Problem: The JBL BassQ unit does
not turn on. Neither the red nor blue
indicator lights are on.
Make sure the JBL BassQ processor is
plugged in, and verify that there is the
proper voltage at the wall outlet. Make
sure the Main Power Switch
A on the
rear panel is in the On position.
Problem: The Standby Indicator ™ lights
red, but it does not change to blue when
the Power Switch ¡ is depressed.
If the JBL BassQ processor is being
used in a JBL Performance Series
system, make sure that the surround
processor is turned on, the Main
Power Switch
A is in the On position,
and there is a connection between the
JBL BassQ unit’s Trigger Input Jack
B
and another device providing a power-
on voltage trigger. Please refer to the
“Connecting Your JBL Performance
Series System” section for reference.
If the JBL BassQ unit is not being used
with an AV1 or any other source pro-
viding a power-on trigger voltage
signal, make sure that no connection
is made to the Trigger Input
B of the
JBL BassQ processor.
Problem: There is no sound from the
speakers, but the JBL BassQ unit is on
(Standby Indicator ™ is lit in blue).
1. Make sure that the surround
processor, amplifier or subwoofer is
on, and that the correct source has
been connected and selected.
2. Make sure that the correct outputs
are connected from the surround
processor to the JBL BassQ unit.
3. Make sure that the subwoofers are
connected to the correct terminals.
Check for short circuits at both ends
of the speaker cables.
Problem: Not all the processors,
amplifiers or subwoofers turn on in
the system.
1. Make sure that all required cables
are connected between system com-
ponents. Refer to the “Connecting
Your JBL Performance Series
System” section.
2. Make sure that each component
has its Main Power Switch A in
the On position and is set to Auto
turn-on, if necessary.
3. Make sure the Power Switch ¡
on each JBL BassQ unit is in the
On position (so that its Standby
Indicator ™ is lit in blue when the
cable is removed from its Trigger
Input Jack
B).
Problem: Insufficient sound output level
from the speakers.
Check that the output levels of the sur-
round processor or equalizer are set
properly.
Problem: Insufficient bass.
Verify that the speakers have been
wired to the JBL BassQ unit with the
correct polarity.
Problem: Audible hum from the speakers.
1. Check the power outlets and make
sure that there is a solid earth
ground present. (The services of an
electrician may be required.)
2. Make sure that all signal cables are
routed away from power cords.
3. If these suggestions fail, experiment
by running ground wires between
the rear-panel screws of the JBL
BassQ processors and the other
system components, such as the
surround processor or signal pro-
cessing package.
If you still encounter difficulty after
trying the suggestions above, call
your JBL authorized dealer, or
516.255.4JBL (USA only) directly,
for further assistance.
TROUBLESHOOTING
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JBLP2338 BassQ 5/8/08 4:54 PM Page 11