JBL manual Troubleshooting, JBL EON15-GAGuide 9/17/02 12 30 PM Page

22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 15

TROUBLESHOOTING

Symptom	Likely Cause	What to do
No sound	Speaker not connected to active	Verify that speaker is connected
	AC power	and that the circuit is on
	Power not switched on	Switch on power and verify that
		power LED is on
No sound, speaker is connected	Speaker power cable is faulty or	• Re-seat the power cable at
to working AC power but won’t	improperly connected.	both ends.
come on.		• Substitute a known-good
		power cable
	Blown fuse	• There are no user-serviceable
		fuses in the EON15 G2.
		Take your speaker to a
		competent servicer.
No sound. Speaker comes on.	Signal source (mixer, instrument,	• Check VU meters on the
	etc.) is not sending.	source mixer
		• Verify that the tape or CD is
		playing.
		• Use headphones to verify
		that the instrument is actually
		sending an audio signal
	Faulty cables and connections	• Disconnect and re-seat signal
		cables.
		• Replace suspected cable with
		a known-good cable
No sound with microphone	Microphone requires phantom	The EON15 G2 does not supply
connected directly to the MIC/	power	phantom power. Switch to a
LINE 1 input.		dynamic microphone, use a
		battery in the microphone (if
		possible), use an external
		phantom power supply.
Signal sounds distorted and very	Excessive input signal, trying to	• Reduce the output level of
loud, PEAK light is lit most of	exceed the capabilities of the	the source.
the time.	speakers	• Turn down the level controls
		on the speaker.
		• Use additional EON speakers.
Signal sounds distorted even at	Mixer or other source is	Review the Owner’s Manual for
moderate volumes, PEAK light	overdriven	your mixer and adjust controls
is not lit.		as needed.
		• Input sensitivity (gain)
		• Channel faders
		• Master faders
		Once this is done, review the
		instructions in the Quick Start
		section of this guide.
Lots of hiss in the sound, the	Improper grain structure	• Make sure that the
mixer controls are at very low		MIC/LINE switch is in the
settings.		LINE (disengaged) position.
		• Reduce the level settings
		at speaker.
		Review the Owner’s Manual for
		your mixer and adjust controls
		as needed.	15
		• Input sensitivity (gain)
		• Channel faders
		• Master faders