Master Audio
Xcellence Line Array Series 208.Ver 1.2
Sep 12
48
12. TROUBLESHOOTING
No power
Check the device is connected to mains
Check mains cable is in good condition.
No sound
Check with the indicators that the signal is being sent from the mixer.
Check that the signal cables are in good condition and connected at both ends
The mixer output level must not be at minimum.
Check that the mixer in not in Mute mode.
Distorted output signal
The system is being saturated with a very high input signal, frequently caused by
the mixer overload. Check the output level or mixer gain channels.
Poor bass levels
Check the polarity on the signal connections between the mixer and cabinets. If any
of the Pins (1, 2 or 3) have been inverted at the cable ends, this will cause significant
performance and sound quality loss.
Noise and Hum
Check that all the connections to the active units are in good condition.
Avoid intertwining between mains supply cables or proximity to transformers or
Electromagnetic (EMI) emitting devices.
Check there is no light intensity regulator in the same AC circuit as the unit.
ALWAYS connect the sound and light circuits in different phases.
Overvoltage LED light (RED)
Check that the mains voltage is within the limits (230+/-10%), 50/60 Hz
