Alcad USOA Manuel D'installation page 75

VIDEOPORTERO 2 HILOS | 2-WIRE VIDEO DOOR ENTRY SYSTEMS | VIDÉO-PORTIER 2 FILS
The entrance panel cannot be heard on any telephone
Check the entrance panel microphone connection with the main module (see page 57).
Check the setting of the volume control in the main module. If no fault is detected, the main
module may be defective.
The entrance panel cannot be heard on one telephone
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.
Feedback is produced on all the telephones
Check the volume controls in the main module. If no fault is detected, the main module may
be defective.
The electric lock does not work
In the main module, disconnect the wires of terminals 11, 12 or 11, 12c, as applicable to
your case. Check the voltage between these terminals, making a bridge between terminals
22 and 18. If there is no voltage or if the voltage is lower than that specified, the main
module may be defective. If the voltage is correct, check the connections of the electric lock.
If no fault is detected, the electric lock may be defective.
In an installation with several points of entry, making a call from one of the panels
does not disable the other panels of the system
Check connections B3, B2 between the different panels of the system. If no fault is detected,
the main module may be defective.
The video system does not work on one monitor: automatic switch-on and normal
screen switch-on do not work when a call is received
Check that the video ON/OFF switch on the monitor is set to the ON position. Check that
the red LED on the monitor is lit up. Check the connection between the monitor and the
connection bracket. If there are several monitors in the same dwelling, see "Installation of
several monitors in the same dwelling". If no fault is detected, the monitor may be defective.
Automatic switch-on does not work on any monitor/telephone
Check that the system is not engaged. Check that only one entrance panel has been defined
as the main panel of the building (positions of SW1 switch of the main module: microswitch
1 left and microswitch 2 right). If there are several points of entry, check that the secondary
panels have been numbered consecutively from 1 to 5 (See "INSTALLATION PARAMETERS
CONFIGURATION INSTRUCTIONS" page 64). If no fault is detected, the main module may
be defective.
Automatic switch-on does not work on one monitor/telephone
Check that the system is not engaged. If no fault is detected, the connection bracket or the
monitor may be defective.
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