Troubleshooting

SYMPTOM	PROBABLE CAUSE	SOLUTION

No sound coming	• Amplifier not turned on	•Turn on amplifier.
from speaker	• Amplifier gain is low	•Make sure that there is
	• Amplifier gain is low	•Make sure that there is
		amplifier gain for that channel.
	• Correct source not	•Select proper source.
	selected or turned on
	• Defective patch cords to amplifier	•Check/replace patch cords.
	• Speaker wires not	•Check speaker wire
	connected to amplifier	connection to amplifier.
	• Balance control set improperly	•Make sure Balance control is set
		at center, or 12 o’clock, position.
	• Speaker wires damaged	•Make sure none of the speaker wires
	or shorted	are frayed, cut or punctured. Make sure
		no wires are touching other wires or
		terminals and creating a short circuit.
	• Speaker not configured	•In Dolby® Digital or DTS® mode, make
	correctly	sure that the receiver/processor is
		configured so that the speaker in
		question is enabled.
	• Center speaker is configured	•In Dolby Pro Logic® mode, make sure the
	incorrectly	center speaker is not in phantom mode.
	• Problem not diagnosed	•To diagnose the likely source of the
		problem, it is often helpful to switch the
		nonfunctioning speaker with one that
		is functioning correctly. Turn off all
		electronics before exchanging the
		speakers. Turn everything back on, and
		determine whether the problem is in
		the same place, or has moved with the
		speaker. If the problem is in the same
		place, the source is most likely with your
		receiver or amplifier. If the problem has
		followed the speaker, then contact your
		authorized JBL Synthesis custom installer
		or dealer for further assistance. If that
		is not possible, visit our Web site at
		www.jblsynthesis.com for further information.