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T
R O U B L E S H O O T I N G
Symptom
Amplifier does not
turn on.
(Power LED is off)
Amplifier has no
sound.
(Power LED is on)
Diagnosis
Voltage applied to the
REM terminal of the
amplifier is not between
10.5 and 15.5 volts or
there is no voltage
present.
Voltage to the B+ termi-
nal of the amplifier is
not between 10.5 and
15.5 volts or there is no
voltage present.
Amplifier is not prop-
erly grounded.
RCA Input from source
unit is not connected or
not functioning properly.
XCards are missing or
not placed properly in
crossover slots and/or
switches are not prop-
erly selected.
Speaker
leads
shorted to each other or
to the chassis of the ve-
hicle.
Speakers are defective.
– 18 –
Remedy
Check the alternator, bat-
tery, fuse, and wiring and
repair as necessary. If the
voltage is above 15.5 volts,
have the electrical system
inspected by an authorized
car service center.
Check the alternator, bat-
tery, fuse, and wiring and
repair as necessary. If the
voltage is above 15.5 volts,
have the electrical inspected
by an authorized car service
center.
Check wiring and repair as
necessary.
Check connections, substi-
tute with known working
source and cables and repair
or replace as necessary.
Check signal input switch and
XCard positions and repair
or replace as necessary.
Disconnect existing speak-
are
ers and test with known
working speakers and wires.
If amplifier plays, check and
repair wiring and installa-
tion of speakers as neces-
sary.
Replace speakers.
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