Front Panel - Toa P-150M Operating Instructions Manual

Front Panel

P-150M
P-300M
Input Attenuator
Calibrated in dB, detented input attenuator decrease input signal levels before the amplifier stage.
Power Indicator LED
The green LED glows when the power switch is "on".
Signal Presence Indicator LED
The LED glows when a signal greater than -30dB is fed to the input regardless of the input attenuator
setting and output power level.
Peak Indicator LED
The LED glows when the output signal is clipped. In such a case, lower the input attenuator level.
Protection Indicator LED
This LED remains lit for 3 seconds after the power switch has been turned on. It also comes on when the
protection circuit is activated, and flashes when the temperature of the heat sink exceeds 105°C.
Circuit Breaker Power Switch
This is a combined switch of circuit breaker and a power mains ON/OFF switch. If the circuit breaker
trips, it may be reset by first setting to the "OFF" position and then returning to the "POWER ON"
position. Always check the amplifier and associated wiring before resetting the circuit breaker.
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