XPA U 1004 SB and XPA U 2002 SB • Operation
19
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
Signal LED State
Problem Description
Problem Solution
Green or Amber
Lit intermittently
Enters standby mode early
The output signal
level of the source
may be too low to
cross the signal
detection threshold
of the amplifier (see
amplifier specs for
details). Increase
the signal level of
the source until the
signal LED lights
consistently, or
defeat the standby
timer.
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
Problem Description
Problem Solution
Blinks
Audio clipping is occurring at the
rate of one blink per clip.
Reduce the power output to avoid overdriving
the amplifier and causing clipping.
Lights steadily The amplifier may be overheating. Determine the reason for the overheated
state and allow the amplifier to cool. The LED
will not be lit after the amplifier recovers from
the overheated state.
Output channel leads are shorted. Check speakers and speaker wiring for shorts.
Over Temp Indicator LED
This indicator does not represent a hard failure of the unit. It is a warning the amplifier has
exceeded the recommended operating temperature for optimal product lifetime.
LED State
Problem Description
Problem Solution
Lights steadily Amplifier has exceeded the
recommended operating
temperature. The LED turns off
after the amplifier cools down.
Verify the placement of the amplifier allows
for sutible ventilation and airflow.
Avoid placing equipment on top or below
the amplifier.
Verify the operating temperature is within
the specified range.
Содержание XPA U 1004 SB
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