
User Manual: NEO System
50
Rev.0.3
5
FAILURE DETECTION
5.1 Speakers Line
The system will indicate a failure in the speaker's line if a short circuit or an open circuit has
been detected or the impedance of the line has varied by at least 14%.
If this error occurs, check the specified line in the system error log. To do this, disconnect the
speaker's line and measure the impedance between the cable terminals with an impedance
measuring equipment. Check that the values correspond to those expected according to the
number and power of existing speakers in the line. Check that there is no short circuit between
any terminal and earth. If any of these measures is beyond the expected values, leave the line
disconnected and check the status of the line and speakers to detect the problem.
5.2 Transmission Line with CIE
The system will indicate a failure with the CIE transmission when it detects that the transmission
path is shorted or disconnected.
If this error occurs, check the connection between the system and the CIE has been carried out
in accordance with section 2.4.8b). To debug the failure, disconnect the two ends of the cable
connected between the CIE and equipment and measure between the cable terminals with a
multimeter on the scale k
Ω. If the measure result 0, the line is shorted. If the result is 1, it means
that is open. If the result is 20kΩ then t
he line is correct. In either of the first two cases, replace
or repair the transmission line.
5.3 Protection Devices
The system will indicate a failure of protection when any of the internal protective devices of the
equipment are active.
If this failure occurs, the amplification channel/s that have the power protection indicator, have
overheated. In this case, make sure the equipment has an adequate ventilation, make sure the
air inlets and outlets are not blocked. The equipment has been protected to prevent serious
damage. The system may run again after restarting and leaving it switched off for several
minutes. Avoid this mode because it can cause severe damage. To avoid damaging the
equipment, turn off the voice alarm zones where the failed occurred and notify the support
service.
5.4 Power Supply
The system will indicate a power failure in any of these situations:
Main power supply: There was a failure in the main power supply. If this error has occurred,
check that the power supply network reaches the equipment. If so, disconnect the equipment
from mains and check the fuse at the input socket on the rear. If the fuse is broken, replace it. If
the fuse is restarted and it breaks again, call the support service.