Trouble Shooting - Alcad GRF-200 Manuel D'installation

POWER SUPPLY UNIT ALC-041
MAINS SUPPLY:
OUTPUT 1:
OUTPUT 2:
OPERATING TEMPERATURE:

TROUBLE SHOOTING

Nothing works.
Check the mains voltage in the power supply unit.
Check that the voltage between + and – of the power
supply is 17 ±10% Vdc. Check for the existence of
a short circuit and rectify this. Disconnect the power
supply for 1 minute and then reconnect it. If ithe
breakdown continues, disconnect all the power
supply + and – terminals, and check that the voltage
between + and – is 21 ±10% Vdc. If you cannot fi nd
the fault, there may be something wrong with the
power supply.
The lighting push-button pilot does not
light up.
Check that the voltage between + and – in the audio
unit is 17 ±10% Vdc. If the voltage is correct, there
may be something wrong with the audio unit.
The card holders do not light up.
Check that the voltage between + and – of the
power supply that supplies the audio unit is 17
±10% Vdc. Check that the voltage between 9 and
10 in the audio unit, with the lighting push-button
activated, is 17 ±10% Vdc. Check whether the lamp
is burnt out.
You cannot hear any sound on the en-
trance panel when a call is made.
Check the connections between the audio unit and
the push-buttons. If you cannot fi nd the fault, there
may be something wrong with the audio unit.
When a call is
ring but confi rmation of the call cannot
be heard on the entrance panel.
Check the volume control of the entrance panel
audio unit. If you cannot fi nd the fault, there may be
something wrong with the audio unit.
If the red indicator light fl ash continu-
osly.
Check that only one entrance panel has been defi ned
as the main one. Check wether there is a short-
circuit in the connections D1, D2 from the audio unit
to all the devices. If required, check connections D3,
D2 of the equipment in the installation. If you cannot
fi nd the fault, there may be something wrong with
the audio unit.
DIGITAL DOOR ENTRY SYSTEMS
made, the telephones
ALC-041
Voltage: 230 V~
Power:
Voltage: 15 V
Current: 0.8 A (máx.)
Voltage: 15 V
Current: 0.8 A (máx.)
-10.. +55
If intermittent tones can be heard on the
entrance panel when a call is made.
The call tone cannot be heard on the telephone:
Check that the handset is not off the hook. Check
that the programming switch of the telephone is in
ON position. Check connections D1 and D2 from
the audio unit to all the telephones. If required,
check connections D3, D2 of the equipment in
the installation. If you cannot fi nd the fault, the
telephone, the audio unit or some other equipment
in the installation may have broken down.
No telephone can be heard from the en-
trance panel.
Check the volume control on the panel. If you cannot
fi nd the fault, there may be something wrong with
the audio unit.
One telephone cannot be heard from
the entrance panel.
Check the cable connections between the receiver
and the base of telephone. Check the hanging-up
button on the base of the telephone. If you cannot
fi nd the fault, there may be something wrong with
the telephone.
The sound produces feedback.
Adjust the feedback control of the audio unit (see
page 13). If the feedback persists, lower the volume
using the volume controls of the audio unit.
The electric lock doesn't work.
With the jumper between terminal 10 and
that the voltage between 12 and 11 in the audio
unit is 17 ±10% Vdc, by making a bridge between
terminals 22 and 11. If you cannot fi nd the fault,
there may be something wrong with the electric lock.
In installations with multiple points of
entry, calling on one of the entrance
panels does not deactivate the other
panels of the system.
Check connections D3 and D2 between the different
panels of the system. If you cannot fi nd the fault,
there may be something wrong with the audio unit.
±10% 50/60Hz
25 VA
±10%
±10%
O C
, check
ENG-15