Troubleshooting - Ground Zero GZPA Reference 4 SYM Anleitung

This power amplifier has protection features to prevent any damages from misuse or faulty conditions. If the
unit senses excessive heat, short circuited speakers or overload, the protection indicators will light, and the
system will be turned off. In order to check the occurred problem, you should turn all levels down and all
power off and carefully check the installation for wiring mistakes or short. If the amplifier shuts down due to
excessive heat, the protection indicators will not light: simply allow time for the unit to cool. Before removing
your amplifier, refer to the list below and follow the suggested procedures.
Always test the speakers and their wires first.
Problem
Amplifier is
not powered up
Protection LED illuminates
when amplifier is powered up
Fuse blowing
Overheating
Sound too low / Distorted
sound
High hiss /
engine noise
in speakers
Trouble shooting
Check points
Check that there is battery power on the +12V terminal.
Check that remote terminal has at least +12V DC remote connection.
Check a good ground connection. Check all fuses.
Check the protection LED is not lit.
Check shorts on speaker wires.
Remove speaker wires and reset the amplifier. If the protection LED still comes on,
then the amplifier is faulty.
Check that the minimum speaker impedance is correct.
Check short on power cable and vehicle chassis.
Check that the minimum speaker impedance is not below 1ohm per channel.
Check speaker shortage.
Check that there is a good airflow around the amplifier.
Check that the input level control is set to match the output level of the unit.
Check the head unit volume.
Check speaker shorts.
Check that crossover frequencies have been set properly.
Check a good ground and for speaker shorts.
Disconnect all RCA inputs from the amplifier. If hiss/noise disappears, check it with
a good RCA interconnect. Then check the components driving the amplifier.
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