LDA NEO 8060, Руководство пользователя, Страница: 44 / 56

5 FAILURE DETECTION
5.1 SPEAKERS LINE
The system will indicate a failure in the speaker's line in case 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 speci fied 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 2.4.2 .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 . If the measure result 0, the line is shorted. If the
result is 1, it means that is open. If the result is 20k then the 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 ampli fication channel/s that have the power protection
indicator, have overheated. In that 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. It is possible that if you turn off your equipment, it run
again after 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 it
to 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 you restart the fuse and it brakes again, call your support service.
Redundant power supply: There was a failure in the redundant power supply. Check
the correct operation of it, following the manufacturer's instructions. If it works properly, check
that the transmission lines between the equipment and the redundant power supply are correct
as shown on section 4.1 .
If in addition to indicate a power supply failure, failure is indicated in one of the amp channels,
It can be that one of them has suffered a breakdown. To avoid damaging the equipment, turn
off the voice alarm zones where the failure occurred, and seek support service.
5.5 LINK
40
www.lda-audiotech.com
User's Manual: EN 54-16 PA/VA System LDA NEO