Audiovox AV-455 manual Troubleshooting, 128-5504 11 of, Problem, Probable Cause, Check Following

TROUBLESHOOTING

PROBLEM	PROBABLE CAUSE		CHECK FOLLOWING
Unit completely inoperative no lights,	Incorrect power	connection	Red wire to +12V ACC. and Yellow wire to
no sound			+12V battery
	Blown fuse		Check fuses in wires listed above and check
			car fuse block
Unit will not keep time or radio station	Incorrect power	connection	Yellow wire is not connected to a "live" +12V
memory			battery source
	Blown fuse		Check fuse in Yellow wire and at car's fuse
			block
Noise on both radio and tape	Poor ground		Check Black wire for proper grounding
	Dirty or corroded battery posts		Clean and tighten connection
	Problem also existed with previous		Consult your local garage mechanic-car may
	radio you removed		need tune-up or noise filter
Noise on radio only	Antenna		Check that antenna base is grounded. Test
			with antenna disconnected. If noise goes
			away, replace antenna
Poor FM reception and almost no AM	Antenna		Replace antenna and antenna cable
reception
Poor FM reception and good AM	FM Local-Distant switch		Check if unit has a Local-Distant switch and
reception			set to "Distant" position.
No sound on one speaker	Wiring		Check speaker wiring
(both radio and tape)
	Speaker		Test with good speaker
	Radio Operation		Check balance and fader controls
Poor sound on tape only (after one	Dirty tape mechanism		Clean tape head and mechanism
month or more of tape usage)
Poor sound - new unit	For radios with 40 watts or more		Check rating of speakers for sufficient power
	output power		capacity
			Check that speakers are in good condition
			Check that none of the speaker wires are
			grounded
	For all radios		Check speaker wiring

TROUBLESHOOTING

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128-5504

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