LRAD
1950XL
GENASYS INC.
Manual Part No.:114931-00 rev. B
25
7.2 Fresh Water Rinse
All connectors as well as all surfaces exposed to salt spray and/or dust should be rinsed
periodically with fresh water, depending on the usage conditions. Recommended rinse-down
frequency is weekly for shipboard installations.
In extremely corrosive environments, a lubricant may be applied to the connectors to repel
water.
7.3 Cleaning the Head Unit Grill
The Head Unit Grill provides a partial barrier for the acoustic drivers in the head unit from dust,
water and other elements, while allowing sound to pass through. Any blockage of this grill
material may affect the acoustic performance of the LRAD.
If there is dust, mud, or other material buildup in the grill, it can be rinsed off with fresh water
and a brush. Allow th
e LRAD’s Head Unit to rest with the grill facing down to let any moisture
that has built up behind the grill during washing drain out.
7.4 Troubleshooting
7.4.1 Symptom: No green power LED on electronics panel after turning on the main power
switch.
The green power LED indicates that the internal 48 VDC power supply has powered up and is
ready to provide power to the amplifiers. If this LED is not lit, the internal AC to DC power
supply has not powered up and is not producing any 48 VDC output.
•
Check the electrical connection to the AC outlet to ensure that AC power is present and
connected.
•
Check the operation of the hours meter. The hours meter operates on 48 VDC from this
supply and would indicate a failed power supply if it was not operational.
If none of these measures correct the problem, then the amplifier module will need to be
replaced.
7.4.2 Symptom: Red fault LED is illuminated and there is low or no sound coming from the
LRAD.
The red fault LED indicates that there is a general fault in one of the amplifiers. This could be a
result of overheating, a shorted output, an over or under-
voltage on the input to the amplifier’s
power supply, or an amplifier failure. Some of these faults will self-heal. For example, an over-
temperature fault will cause the amplifier to shut down until the temperature is back to
normal. A fault caused by a shorted output will be cleared when the short is removed.
