SpeakerCraft BB1235 User Guide
28
No sound is heard on one or some
channels. (Continued)
channels. (Continued)
The level adjustment on the channel
is turned all the way down. Turn it
clockwise to raise the volume.
is turned all the way down. Turn it
clockwise to raise the volume.
Some or all of the internal fuses are
blown. Return the amplifier to your
SpeakerCraft dealer for servicing.
blown. Return the amplifier to your
SpeakerCraft dealer for servicing.
Hum or buzzing sound is heard.
The sound may be caused by a
ground loop in the system. Try to
eliminate this by reversing the AC
plugs of other components in the
system.
ground loop in the system. Try to
eliminate this by reversing the AC
plugs of other components in the
system.
Other causes include faulty cables.
Amplifier will not turn on.
The amplifier must be plugged into a
live outlet. The power switch on the
front panel must be on.
live outlet. The power switch on the
front panel must be on.
The Power Mode switch may be posi-
tioned incorrectly.
tioned incorrectly.
The Problem
Possible Causes And Solutions
27
The amplifier is designed to function trouble-free. Most problems occur
because of operating errors. If you have a problem please check the trou-
bleshooting list first. If the problem persists, contact your authorized
SpeakerCraft dealer or SpeakerCraft customer service at (800) 448-0976.
because of operating errors. If you have a problem please check the trou-
bleshooting list first. If the problem persists, contact your authorized
SpeakerCraft dealer or SpeakerCraft customer service at (800) 448-0976.
TROUBLESHOOTING
No sound is heard on all channels.
Audio cable to the source component
is not connected properly or the cable
is bad. Use another cable that you
know is good.
is not connected properly or the cable
is bad. Use another cable that you
know is good.
The Input Selection switch is posi-
tioned incorrectly. Refer to installation
instructions for proper settings.
tioned incorrectly. Refer to installation
instructions for proper settings.
Some or all of the internal fuses are
blown. Return the amplifier to your
SpeakerCraft dealer for servicing.
blown. Return the amplifier to your
SpeakerCraft dealer for servicing.
No sound is heard on one or some
channels.
channels.
Audio cable to the source component
is not connected properly or the cable
is bad. Use another cable that you
know is good.
is not connected properly or the cable
is bad. Use another cable that you
know is good.
The Input Selection switch is posi-
tioned incorrectly. Refer to installation
instructions for proper settings.
tioned incorrectly. Refer to installation
instructions for proper settings.
The Bridging switch is positioned
incorrectly. Refer to installation instruc-
tions for proper settings.
incorrectly. Refer to installation instruc-
tions for proper settings.
Check the termination points of the
speaker cable at both the amplifier
and speaker. If using InstaLLock
speaker cable at both the amplifier
and speaker. If using InstaLLock
™
Connector, check the connections at
the levers.
the levers.
A speaker is not working. Make sure
by connecting the channel to a
speaker that you know to be working.
by connecting the channel to a
speaker that you know to be working.
(Continued on next page.)
The Problem
Possible Causes And Solutions