Rockford Fosgate 100, 800 Troubleshooting, Symptom, Diagnosis, Remedy, turn on, Amplifier, has no

TROUBLESHOOTING

TROUBLE-S H O O T

I N G

Symptom		Diagnosis	Remedy
Amplifier does not		Voltage applied to the REM	Check the alternator, battery, fuse,
turn on		terminal of the amplifier is	and wiring and repair as necessary.
(Power LED is off)		not between 10.5 and	If the voltage is above 15.5 volts,
		15.5 volts or there is no	have the electrical system inspected
		voltage present.	by an authorized car service center.
		Voltage to the B+ terminal	Check the alternator, battery, fuse,
		of the amplifier is not be-	and wiring and repair as necessary.
		tween 10.5 and 15.5 volts	If the voltage is above 15.5 volts,
		or there is no voltage	have the electrical system inspected
		present.	by an authorized car service center.
		Amplifier is not properly	Check wiring and repair as neces-
		grounded.	sary.
Amplifier	has no	Speaker leads are shorted	Disconnect existing speakers and
sound
		to each other or to the chas-	test with known working speakers
(Power LED is on)		sis of the vehicle.	and wires. If amplifier plays, check
			and repair wiring and installation of
			speakers as necessary.
		Speakers are defective.	Disconnect existing speakers and
			test with known working speakers.
			If amplifier plays, check and repair
			speakers as necessary.
Speaker	Output	Input gain signal for amplifier	Readjust input gains of amplifier.
Low or Distorted		is incorrectly set.
		Source unit output too low or	Check system with known working
		source unit has no output.	source and repair or replace origi-
			nal source as needed.
		Low battery voltage or large	Check the alternator, battery, fuse,
		voltage drops to the amplifier	and power and ground wiring.
		under load.	Repair as necessary.
Amplifier Noise		Voltage spike from output of	Disconnect input signal to ampli-
(Turn-on Pop)		preceding component is en-	fier and turn amplifier on and off. If
		tering amplifier through in-	noise is eliminated, connect REM
		put signal.	lead of amplifier to source unit with
			a delay turn-on module.

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