36
ENGLISH
TROUBLESHOOTING
No.
Symptom
Solution
1
Amplifier not working
a. Check the cables connected to the
amplifier, vehicle chassis ground and
battery
b. Check overall condition of the battery
c. Check the power cord as well as all
connections to the battery
d. Check all fuses
e. If the fault indicator LED is flashing, please
refer to the troubleshooting guide under
indicator LEDs
2
Fault indicator LED
flashing
a. Check for a short circuit in the speaker
cables
b. Make sure the loudspeaker impedance
is not below the minimum load of the
amplifier (4 Ohm mono or 2 Ohm stereo)
for CRESCENDO REVOLUTION 5A4
3
Fault indicator LED lights
up continuously
The amplifier is damaged and need repair
4
Sound is not present
a. Check RCA output of the sound source and
sensitivity control of the amplifier
b. Carefully check RCA cable connection
c. Check loudspeaker cables and its
termination on both the amplifier and
loudspeaker
