Rockford Fosgate 250 sERIES Installation & Operation Manual page 46

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+ terminal of the ampli-
fier is not between 10.5 and 15.5 volts
or there is no voltage present.
Amplifier is not properly grounded.
RCA Input from source unit is not con-
nected or not functioning properly.
When using the BLT, Balanced Line
Input from BLT is not connected or not
functioning 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 selec-
tion is chosen.
XCards are missing or not placed prop-
erly 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.
– 42 –
Remedy
Check the alternator, battery, fuse, and
wiring and repair as necessary. If the
voltage is above 15.5 volts, have the
electrical system inspected by an au-
thorized car service center.
Check the alternator, battery, fuse, and
wiring and repair as necessary. If the
voltage is above 15.5 volts, have the
electrical system inspected by an au-
thorized 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
necessary.
Check signal, speaker wiring, and left
channel phase selection installation and
correct as needed.
Check crossover switches and XCard
positions and repair or replace as nec-
essary.
Disconnect existing speakers and test
with known working speakers and wires.
If amplifier plays, check and repair wir-
ing and installation of speakers as nec-
essary.
Disconnect existing speakers and test
with known working speakers. If ampli-
fier plays, check and repair speakers as
necessary.
TROUBLE-S
H
O
O
T
I
N
G