Troubleshooting - JBL EON15 G2 User Manual

Symptom
No sound
No sound, speaker is connected
to working AC power but won't
come on.
No sound. Speaker comes on.
No sound with microphone
connected directly to the MIC/
LINE 1 input.
Signal sounds distorted and very
loud, PEAK light is lit most of
the time.
Signal sounds distorted even at
moderate volumes, PEAK light
is not lit.
Lots of hiss in the sound, the
mixer controls are at very low
settings.

TROUBLESHOOTING

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