Alcad USOA MVG-000 Manual De Instalador página 74

VIDEOPORTERO 2 HILOS | 2-WIRE VIDEO DOOR ENTRY SYSTEMS | VIDÉO-PORTIER 2 FILS
The card-holders stay lit
This entrance panel has an LDR-type Light sensor that allows programming the automatic
switch-on of the card-holder lights according to the environment light conditions. To activate
this automatic mode, move switch 6 of SW2 down (See 69). Now adjust the light sensor
using the LDR potentiometer to set the illumination threshold at which the card-holder will
lit on (See 70).
The entrance panel does not emit any sound when a call is made
Check whether the call rings on the monitor; if it does, see the following paragraph. Check
that there is a bridge of red cable in the IN connector of the last module of the entrance
panel. If the red indicator on the entrance panel remains on, some connection between the
modules may not make good contact.
The call rings on the monitor but the entrance panel does not emit any sound when
the call pushbutton is pressed
Check that the language selector is not set to mute (see page 70). Check that the
volume of spoken messages is not turned all the way down (see page 70).
The call does not ring on a monitor/telephone
If the entrance panel emits beeping tones, see the following paragraph. If the call
confirmation is heard at the entrance panel, check that the call volume control switch on the
monitor/telephone is not in the lowest position .
If no fault is detected, the monitor/telephone or the pushbutton of the panel may be
defective.
The entrance panel emits beeping tones when a call is made
If the problem occurs with all the monitors/telephones, check the connection B1, B2 of the
power supply unit interface to the monitors/telephones.
The call has not rung on the monitor/telephone.
If the problem occurs from all the entrance panels of the installation, make sure that the
connection bracket/telephone has been programmed and that the receiver of the monitor/
telephone has been hung up. Check that the programming switch of the connection bracket/
telephone is set to the ON position. Re-check connection B3, B2 of the main module to the
power supply unit interface and connection B1, B2 of the power supply unit interface to
the monitors/telephones. If no fault is detected, the connection bracket/telephone or other
equipment of the installation may be defective.
If the problem occurs from only one of the entrance panels of the installation, check the
connection of this panel with the other panels. If no fault is detected, the main module of this
panel may be defective.
No monitor/telephone can be heard at the entrance panel
Check the setting of the volume control in the main module. If no fault is detected, the main
module may be defective.
One monitor/telephone cannot be heard at the entrance panel
Check the connections of the cable between the receiver and the base of the monitor/
telephone. Check the hang-up pushbutton on the base of the monitor/telephone. If no fault is
detected, the monitor/telephone may be defective.
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