Amplifier Enters Standby Mode Too Early; Limiter/Protect Led Warning Indicators; Over Temp Indicator Led - Extron electronics XPA Ultra Series User Manual

Amplifier Enters Standby Mode Too Early

The input channel signal LED lights green per indicated input channel when an input signal
is detected.
Power LED
Color
Green or
Amber

Limiter/Protect LED Warning Indicators

The output channel Limiter/Protect LED lights red per indicated output channel as shown in
the following diagnostic information.
LED State
Blinks
Lights steadily

Over Temp Indicator LED

This indicator does not represent a hard failure of the unit. It is meant as a warning that
the amplifier has exceeded the recommended operating temperature for optimal product
lifetime.
LED State
Lights steadily
Signal LED Problem Description Problem Solution
State
Lit intermittently Enters standby mode
early
Problem Description
Audio clipping is occurring at the
rate of one blink per clip
The amplifier may be overheating Determine the reason for the
Output channel leads are shorted Check speakers and speaker wiring
Problem Description
Amplifier has exceeded the
recommended operating
temperature. The LED turns off
after the amplifier cools down
sufficiently
XPA Ultra Series Power Amplifiers • Operation
The output signal level of
the source may be too low
to cross the signal detection
threshold of the amplifier (see
amplifier specifications for
details).
Increase the signal level of the
source until the signal LED
lights consistently or defeat
the standby timer.
Problem Solution
Reduce the power output to avoid
overdriving the amplifier and causing
clipping.
overheated state and allow the
amplifier to cool. The LED will not be
lit after the amplifier recovers from
the overheated state.
for shorts.
Problem Solution
Verify that the placement of the
•
amplifier allows for adequate
ventilation and airflow.
• Avoid placing equipment on top
of or below the amplifier.
Verify that the operating
•
temperature is within the
specified range.
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