Owners Manual
46
The best way to check is probably to remove the grille from the module and use your fingertips to
feel for cone vibrations while music is being played through the system.
Be aware that no movement of the cone of a transducer is not positive proof that the transducer is
bad. It could be that its associated amplifier has failed or that the beam steering is limiting the drive
to the transducer or restricting its use to a narrow frequency band.
MODULE / COLUMN ARRAY FAILURE (NO SOUND)
When a complete column array stops working, the first thing to verify is whether the column array is
still receiving AC power and audio signal.
The presence of AC power can be verified by removing the access panel. If the green power LED
isn’t lit, either the circuit breaker has tripped or the column array is no longer receiving power. Reset
the circuit breaker to see if this cures the problem. If it doesn’t or if the power comes on for only a
brief period of time and then goes out again, either the power supply or the amplifier section has
probably failed. Don’t continue to reset the circuit breaker as this may cause further damage to the
power supply/amplifier.
We recommend replacing the entire power supply/amplifier assembly, instead of trying to
troubleshoot the assembly in the field.
If AC power is present and the circuit breaker has not tripped, either audio is not reaching the
column array or the power supply/amplifier has failed. If audio is reaching the column, we recom-
mend replacing the entire power supply/amplifier assembly, instead of trying to troubleshoot the
assembly in the field.
To replace the power supply/amplifier assembly:
1. Make sure that power to the column array is turned off.
2. Remove both side panels from the non-functioning module.
