ATON A275 installation manual Troubleshooting

A T O N			A275 INSTALLATION MANUAL
Chapter 5: Troubleshooting
Symptom	Possible Cause	Solution
No Audio From One or	1. Loose/bad speaker cable connection	1.	Check cable ends at binding posts and
More Channels		speaker terminals.
	2. Break/short in speaker cable	2.	Check continuity of each speaker cable
		using multimeter. If short or open is indi-
		cated, check wiring for proper connections.
	3. Speaker is defective	3.	Swap with known good speaker.
		4.	Swap with known good patch cable.
	4. RCA patch cable defective
		5.	Verify source is powered up and playing.
	5. Source not sending audio	Check any tape monitor settings on A/V
		Receiver.
No Audio From One Channel	Amplifier is overheating due to	1.	(a) Turn the amplifier off and allow the
	inadequate ventalation or prolonged opera-	internal circuits to cool.
	tion at clipping levels.		(b) Ensure that the amplifier has proper
		ventilation. Add cooling fan if necessary.
			(c) Lower the gain level controls for that
		channel pair.
No Audio From One Channel	Unit may require service.	Contact ATON Technical Support.
Very Low or No Sound on Some or All	Audio input cable is bad.	Check source equipment cables for damage
Channels		and faulty connections and correct.
Audio “Hum”	1. Ground potential difference between	1.	(a) Test AC outlet using ground tester.
	source components (ground loop)		(b) Reverse the AC plug of components
		with non-polarized ends plugged into the
		same outlet strip as amp.
	2. Faulty/damaged cables	2.	Check source equipment cables for dam-
		age and faulty connections.
	3. Faulty wiring	3.	(a) Make sure volume controls are not
		hooked up backwards.
			(b) Check for shorts in wiring (see item
		2 in “No audio…”).

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