Power Indicator - Harman Crown ComTech DriveCore CT 475 Manual De Operación

15 Troubleshooting

15.1 Power Indicator

OFF
CONDITION: Power indicator is OFF.
POSSIBLE REASON
• The amplifier has lost AC power.
• The amplifier's Power switch is off.
• The amplifier is not plugged into the power receptacle.
• The amplifier output level is so high that the power supply
circuit breaker has tripped. Allow the unit to cool. Turn
down the Level controls. Press the Reset Switch on the
back panel.
FLASHING
CONDITION: Power indicator is FLASHING.
POSSIBLE REASON
• The AC line voltage has dropped below +15/-25 or has
risen above +15/-25% of the nominal line voltage of the
power supply.
• Amp is in Deep Sleep Mode.
15.2 Fault Indicator
FLASHING
CONDITION: Fault indicator is FLASHING.
POSSIBLE REASON
• The amplifier channel has stopped operating. Refer the
unit to an authorized Crown Service Center.
• Check for shorted outputs
15.3 Thermal Indicator
ON
CONDITION: Thermal indicator is ON.
POSSIBLE REASON
• The amplifier is becoming too hot for safe operation.
Allow amplifier to cool. Check for loads less than 4 ohms,
and for excessive input levels. Check for proper
ventilation and proper mode-switch set ting.
page 14
FLASHING
CONDITION: Thermal indicator is flashing.
POSSIBLE REASON
• Amplifier has become too hot to operate. Allow amplifier
to cool. Amplifier will not pass audio if amplifier has
become too hot
15.4 Clip Indicator
ON or FLASHING
CONDITION: Clip indicator is ON or FLASHING.
POSSIBLE REASON
• input level or output level is distorting
15.5 Signal Indicator
OFF
CONDITION: Signal indicator is flashing even
though audio is applied, and the channel is
ready.
POSSIBLE REASON
• Input signal level is very low
• Level controls are turned down
15.6 Ready Indicator
OFF
CONDITION: Ready indicator is OFF.
POSSIBLE REASON
• Amplifier may be in deep sleep
FLASHING
CONDITION: Ready Indicator flashing.
POSSIBLE REASON
• Amplifier is in Standby mode. Flashing will stop once
there is an input signal.
CT Power Amplifiers
Operation Manual