Kicker kx75.2 Guía Del Usuario

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TROUBLE SHOOTING
If your amplifier does not appear to be working, check obvious things first
such as blown fuses, poor or incorrect wiring connections, incorrect setting of
crossover switch and gain controls, etc.
There are two LEDs on the end panel of your Kicker KX series amplifier, one
green and one red. When the green LED is lit this indicates the amplifier is
turned on and no trouble exists. If the green LED turns off and the red LED is lit
this indicates that the protection circuitry (SORT) is engaged. 
The power indicator on top of the amplifier which illuminates the model
badge follows the same function as the green LED.
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Green  LED off,, no  output::
With  a Volt  Ohm  Meter  (VOM) check::
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+12 volt power terminal (should read +12V to +16V).
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Remote turn-on terminal (should read +12V to +16V).
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Check for reversed power and ground connections.
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Check for clean and solid ground.
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Green  LED on,, no  output::
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Check RCA connections.
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Test speaker outputs with known good speaker.
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Substitute known good source unit.
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Check for signal on RCA cable with VOM meter in AC position.
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Red  LED on,, no  output::
1.) Amp is very hot.
Ö
Thermal protection is engaged. Check for proper impedance at 
speaker terminals. Also check for adequate airflow around amplifier.
2.) Amp shuts down only while vehicle is running.
Ö
Voltage protection is engaged. Voltage to the amplifier is not within 
the 9-16 volt operating range. Have automobile charging/electrical 
system inspected.
3.) Amp will only play at low volume levels.
Ö
Short circuit protection is engaged. Check for speaker wires shorted 
to each other or the vehicle chassis. Damaged speakers or operating 
below minimum impedance will also cause this.
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No  output  from  one  chaannel::
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Check balance control on head unit.
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Check RCA & speaker connections for that channel.
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Swap RCA connections from left to right.
If problem changes sides then you have a bad RCA 
cable or source unit problem. 
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Swap speaker connections from left to right.
If problem changes sides then you have a bad speaker 
cable or bad speaker. 
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