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12 | JL Audio - XD500/3v2 Owners Manual
STATUS LED / PROTECTION CIRCUITRY
There is a single multi-color LED on the top
surface of the amplifier to indicate the amplifier’s
operating status.
3 Channel Amplifier
Rem.
|
Oset
|
Signal
Input Voltage
Low
|
High
Turn-On Mode
1) Flashing Green: The amplifier is powering up,
audio output is muted.
2) Constant Green: The amplifier is on and
functioning normally, audio output is active.
3) Constant Red: lights to indicate that the
amplifier has exceeded its safe operating
temperature, putting the amplifier into a
self-protection mode, which reduces the
peak power output of the amplifier. When
its temperature returns to a safe level, the red
light will return to green and the amplifier will
return to full-power operating mode.
4) Constant Amber (Yellow): Indicates that
an over-current condition has occurred
and is accompanied by a muting of the
amplifier’s output. Because the muting
behavior may be very short in duration, it
may manifest itself as an audible, repetitive
ticking or thumping noise in the output.
Over-current conditions can be caused by a
speaker impedance lower than the optimum
load impedance range for the amplifier or
a short-circuit in the speaker wiring. The
latter can result from a short circuit between
the positive and negative speaker wires or
between either speaker wire and the vehicle
chassis. The “Status LED” will remain amber
for a few seconds, even if the over-current
condition is of a very short duration.
5) LED off / Amplifier Shuts Off Unexpectedly
The only condition that will shut down an
undamaged XD500/3v2 completely is if battery
voltage or remote turn-on voltage drops below
10 volts. The “Status LED” will turn off when
this occurs. The amplifier will turn back on
when voltage climbs back above 11 volts. If
this is happening in your system, have your
charging system and power wiring inspected.
For more information on troubleshooting this
amplifier, refer to Appendix D (pages 16, 17).
12


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