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TROUBLESHOOTING
If any type of problem related to the electronic door entry system is
encountered, consult the data sheets of the corresponding audio unit.
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Check that the channel to which the television has been tuned is
the same as that selected in the modulator. Make sure that the
correct standard has been selected for your country. Check the
mains voltage in the modulator. If the LED operating indicator of
the modulator is not lit up, check whether there is a short circuit
VIDEODOOR ENTRY SYSTEMS
in the - , + connections of the video unit. Check that the voltage
between the – and + terminals of the video unit is 15 Vdc ±10%.
Check the connection of the coaxial cable from the video unit to
the modulator. If you cannot find the fault, there may be something
wrong with the modulator or with the video unit.
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