108
Lower the sound level using the volume control on the
audio unit.
The call tone doesn’t ring on any monitor.
Check that the voltage between 2 and 7 in the audio
unit, without pressing the push button, is 9 Vdc. Check the
connection between 7 in the audio unit and the push-but-
tons. Check connection 2 from the audio unit to the moni-
tors. If you cannot find the fault, there may be something
wrong with the audio unit.
The call tone doesn’t ring in a monitor.
Check that the handset is not off the hook. Check the
connection between the connection bracket and the moni-
tor. Check connections 2 and 5 from the conection bracket
to the entrance panel. Check the push-button connection on
the audio unit. If you cannot find the fault, there may be
something wrong with monitor or the panel push-button.
You cannot hear the call confirmation on the
entrance panel.
Check that you can hear the monitors on the entrance
panel. Check that the call tone rings on the monitors. If you
cannot find the fault, there may be something wrong with
the audio unit.
The electric lock doesn’t work.
Check that the voltage between 1 and 2 in the audio
unit, without pressing the lock release button, is 5 Vdc.
Check that the voltage between 11 and 12 in the audio
unit, when you press the lock release button, is 12 Vac. If
you cannot find the fault, the lock may be broken.
The video system does not work in any moni-
tor: auto switch-on, screen doesn´t come on
when teceiving a call, ...
Check the mains voltage in the power supply unit. Check
that the voltage of the power supply between - and + is 15
Vdc. Check if there's a short circuit and rectify it.
Disconnect the power supplies supply for 1 minute and
reconnect it. If the breakdown continues, disconnect all the
- and + terminals from the power supply unit and check that
voltage between - and + is 15 Vdc. If it's not correct, there
may be something wrong with the power supply.
Video system does not work in one monitor:
auto switch-on, screen doesn´t come on when
receiving a call,..
Check that the ON/OFF switch for the video is in ON
position (on the left). Check that the red led of the monitor
is on. Check the connection between the connection brac-
ket and the monitor. Check that the voltage between - and
+ of the connection bracket is 15 Vdc. If failure cannot be
found, there may be something wrong with the monitor.
Nothing works.
Check the mains voltage in the power supply unit.
Check that the voltage between and V of the power
supply is 12 Vac. Check for the existence of a short cir-
cuit and rectify this. Disconnect the power supply for 1
minute and then reconnect it. If ithe breakdown conti-
nues, disconnect all the power supply V and termi-
nals, and check that the voltage between and V is
12 Vac. If this is not the case then there may be some-
thing wrong with the power supply.
The card holders do not light up.
Check that the voltage between and V of the power
supply unit is 12 Vac. Check that the voltage between 9
and 10 in the audio unit, with the lighting push button
activated, is 12 Vac. Check whether the lamp is burnt
out.
The lighting push button pilot does not light
up.
Check that the voltage between and V in the audio
unit is 12 Vac. If the voltage is correct, there may be
something wrong with the audio unit.
No monitor can be heard from the entrance
panel.
Check connections 2 and 3 from the audio unit to all
the monitors. Check the volume control on the panel and
the lighting push button pilot. If you cannot find the fault,
there may be something wrong with the audio unit.
One monitor cannot be heard from the
entrance panel.
Check connections 2 and 3 from the connection brac-
ket to the audio unit. If you cannot find the fault, there
may be something wrong with the monitor.
You cannot hear the entrance panel on any
monitor.
Check connections 2 and 4 from the audio unit to all
the monitors. Check the volume control on the monitors
(on the panel) and the lighting push button pilot. If you
cannot find the fault, there may be something wrong with
the audio unit.
You cannot hear the entrance panel on a
monitor.
Check connections 2 and 4 from the connection brac-
ket to the audio unit. If you cannot find the fault, there
may be something wrong with the monitor.
You can hear whistling in the panel. The sound
produces feedback.
KIT INSTALLATIONS
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