ABB 2Line Manual page 79

speaker-microphone module and the audio unit. If no fault is
detected, the speaker-microphone module may be defective.
The entrance panel does not emit any sound when a call is
made
Check whether the call rings on the monitors/telephones; if it does,
see the following paragraph. Check connection B3, B2 of the
entrance panel to the power supply unit interface. Check the
connection of the pushbuttons with the audio unit. If no fault is
detected, the audio unit may be defective.
The call rings on the monitors/telephones but the entrance
panel does not emit any sound when the call pushbutton is
pressed
Check connection 30 between the speaker-microphone module
and the audio unit. Check the adjustment of the volume control
in the entrance panel. If no fault is detected, the audio unit may
be defective.
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 (put the cancelled speaker symbol).
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.
If the call has not rung on the monitor/telephone and 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 audio unit 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 audio unit of this panel may be
defective.
No monitor/telephone can be heard at the entrance panel
Check connection 30 between the speaker-microphone module
and the audio unit. Check the setting of the volume control in the
audio unit. If no fault is detected, the speaker-microphone 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.
The entrance panel cannot be heard on any telephone
Check connection 30 between the speaker-microphone module
and the audio unit. Check the setting of the volume control in the
audio unit. If no fault is detected, the speaker-microphone 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 audio unit. If no fault is detected,
the speaker-microphone module may be defective.
The electric lock does not work
In the audio unit, 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
audio unit 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 audio unit may be defective.
The video system does not work on any monitor: automatic
switch-on and normal screen switch-on do not work when a
call is received
Check connection 39 between the camera and the audio unit. In
colour systems, check that when a call is made, the LEDs of the
camera light up. If no fault is detected, the camera or the audio
unit 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 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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