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27
TROUBLESHOOTING GU ID E
TROUBLESHOOTING GU IDE
When there is a problem consult this guide first. If the problem persists, or you
have additional questions, call your local Niles dealer or call Niles Technical
Support at 1-800-289-4434. The most common problems relate to hook up.
SYM PTO M
No sound on one channel
No sound on some or all
channels
POSSIBLE CAU SES AN D TEST PRO CED U RE
BusMatrix DIP switch is not in the correct position.
Check your configuration worksheet for the correct
setting and verify.
Short circuit or loose wire at speaker or amplifier
terminals. Check that connections are secure and
that there are no loose strands of wire crossing from
the positive to the negative terminal at the back of
the amplifier and the speaker.
Short circuit or a break in the speaker wire. Dis-
connect the speaker wire at both ends, separate the
2 conductors at both ends and test with a meter for
a short circuit. If there is no short, connect the two
conductors at one end and test with a meter for
continuity.
Speaker is not working. Connect the speaker to a
channel that plays another speaker.
Audio cable to dedicated input is bad. Connect the
non-working channel input to another cable that is
known to be good.
Bridging Switch is in the wrong position. Check
your configuration worksheet for the correct setting
and verify.
The thermal protection circuit has operated because
of overheating caused by overdriving or inadequate
ventilation.
BusMatrix DIP switches are not in the correct posi-
tions. Check your configuration worksheet and
verify all settings.
Audio cable to the main bus inputs is bad. Connect
the non-working channel input to another cable
that is known to be good.
Some or all of the internal amplifier fuses are blown.
(Return the amplifier to your dealer for service).
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