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Troubleshooting
Under different circumstances, the front panel LED lights green or amber, which provides
diagnostic information.
Amplifier Fails to Exit Standby Mode Promptly
Power LED
Color
Amber
Green or
Amber
Amplifier Enters Standby Mode Too Early
Power LED
Color
Green or
Amber
Problem Description
Problem Solution
•
No output signal.
•
Slow to exit standby
•
mode when a signal is
present.
Problem Description
Problem Solution
Enters standby mode
•
early.
MPA 401-70V and MPA 401-100V • Setup and Operation
No input detected: verify that there is an
input signal.
If a signal is present, raise the input level.
The amplifier is in standby mode and the
output has been turned off. Check the
remote port.
The input signal may be too weak. Raise
the input level.
The input signal may be too weak. Raise
the input level.
13
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