ABB 2Line Manual page 102

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.
100 | ABB
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 audio unit: see illustration showing microswitch
1 up and microswitch 2 down). If there are several points of entry,
check that the secondary panels have been numbered consecutively
from 1 to 5 (see “Configuring a secondary entrance panel ). If no
fault is detected, the audio unit 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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