Rockford Fosgate 400x4 Troubleshooting, Amplifier does not, Turn on, Amplifier has no, Sound

T R O U B L E S H O O T I N G

Symptom		Diagnosis			Remedy
Amplifier does not	Voltage applied to the				Check the alternator, bat-
turn on	REM	terminal of		the	tery, fuse, and wiring and
(Power LED is off)	amplifier is not between				repair as necessary. If the
	10.5 and 15.5 volts or				voltage is above 15.5 volts,
	there is		no voltage		have the electrical system
	present.				inspected by an authorized
					car service center.
	Voltage to the B+ termi-				Check the alternator, bat-
	nal of the amplifier is				tery, fuse, and wiring and
	not between 10.5 and				repair as necessary. If the
	15.5 volts or there is no				voltage is above 15.5 volts,
	voltage present.				have the electrical system
					inspected by an authorized
					car service center.
	Amplifier is not prop-				Check wiring and repair as
	erly grounded.				necessary.
Amplifier has no	RCA Input from source				Check connections, substi-
sound	unit is not connected or				tute with known working
	not	functioning prop-			source and cables and repair
(Power LED is on)
	erly.				or replace as necessary.
	XCard is missing or not				Check XCard position and
	placed properly in cross-				repair or replace as neces-
	over slots.				sary.
	Speaker		leads	are	Disconnect existing speak-
	shorted to each other or				ers and test with known
	to the chassis of the ve-				working speakers and wires.
	hicle.				If amplifier plays, check and
					repair wiring and installa-
					tion of speakers as neces-
					sary.
	Speakers are defective.				Disconnect existing speak-
					ers and test with known
					working speakers. If ampli-
					fier plays, check and repair
					speakers as necessary.

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