Guinaz M1725V2 Guia De Instalacion página 25

SOLUCIÓN DE PROBLEMAS.
PROBLEM
Nothing works and not even the
card racks are illuminated.
There is no audio
communication or it is of bad
quality in all the dwellings.
PROBLEM SOLVING.
POSSIBLE FAULT
1M – 2M = 17Vdc
3M – 2M = 17Vdc