Rockford Fosgate 250.2 - Manual (Page 43)

Symptom Diagnosis Remedy
T
R O U B L E S H O O T I N G
Amplifier does not turn on.
(Power LED is off) 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+ terminal of the amplifier
is not between 10.5 and 15.5 volts or there
is no voltage present.
Amplifier is not properly grounded.
Check the alternator, battery, fuse, and
wiring and repair as necessary. If the volt-
age is above 15.5 volts, have the electrical
system inspected by an authorized car
service center.
Check the alternator, battery, fuse, and
wiring and repair as necessary. If the volt-
age is above 15.5 volts, have the electrical
system inspected by an authorized car
service center.
Check wiring and repair as necessary.
Check connections, substitute with known
working source and cables and repair or
replace as necessary.
Check connections, substitute with known
working BLT and cables and repair or
replace as necessary.
Check switch position and correct as neces-
sary.
Check signal, speaker wiring, and left chan-
nel phase selection installation and correct
as needed.
Check crossover switches and XCard posi-
tions and repair or replace as necessary.
Disconnect existing speakers and test with
known working speakers and wires. If am-
plifier plays, check and repair wiring and
installation of speakers as necessary.
Disconnect existing speakers and test with
known working speakers. If amplifier plays,
check and repair speakers as necessary.
RCA Input from source unit is not connected
or not functioning properly.
When using the BLT, Balanced Line Input
from BLT is not connected or not function-
ing properly.
Unbalanced/Balanced Line switch is not
selected for corresponding input.
Amplifier is in E-Z Bridge operation but
incorrect signal input, speaker wiring, and/
or left channel 180
°
phase selection is
chosen.
XCards are missing or not placed properly
in crossover slots and/or switches are not
properly selected.
Speaker leads are shorted to each other or
to the chassis of the vehicle.
Speakers are defective.
Amplifier has no sound.
(Power LED is on)
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