Trouble Shooting - Alcad GRF-208 Manuel D'installation

TROUBLE SHOOTING

To program the telephones, check that you are located on the main
entrance panel (the J1 jumper is fitted to the audio unit) and that you
have only one entrance panel defined as the main one. Make sure you
have communication with the main entrance panel before pressing the
push-button that you want to associate to the telephone. Remember that
the panel emits a confirmation tone once the telephone has received
the code (device programmed). If the telephone cannot be programmed:
Check the connection between 7 in the audio unit and the push-buttons,
the connection between the push-buttons and the concentrator of calls
and the connection between the concentrator of calls and the audio
unit.
Nothing works.
Check the mains voltage in the power supply unit that feeds the
audio unit. Ensure that the green led of the power supply to the
audIo unit is lit. Check that the voltage between – and + of the
power supply is 15 ±10% Vdc. Check for the existence of a short
circuit and rectify this. If ithe breakdown continues, disconnect all
the power supply – and + terminals, and check that the voltage
between – and + is 15 ±10%Vdc. If you cannot find 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 15 ±
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 9 and 10 in the audio unit, with
the lighting push-button activated, is 15 ±10% Vdc. Check whether
the lamp is burnt out.
You cannot hear any sound on the entrance panel when a call
is made.
Check the connection between 7 in the audio unit and the push-
buttons. Check the connection between the concentrator of calls
and the push-buttons and between the concentrator of calls and
the audio unit. If you cannot find the fault, there may be something
wrong with the concentrator of calls or the audio unit.
When a call is made, the telephones ring but confirmation of
the call cannot be heard on the entrance panel.
Check the volume control of the entrance panel audio unit. If you
cannot find the fault, there may be something wrong with the
audio unit.
If the red indicator light flash continuosly.
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 and D5, D4 of the equipment in the installation. If you
cannot find the fault, there may be something wrong with the
audio unit.
D I G I T A L D O O R E N T R Y
No telephone can be heard from the entrance panel.
One telephone cannot be heard from the entrance panel.
You cannot hear the entrance panel on any telephone.
You cannot hear the entrance panel on a telephone.
The sound produces feedback.
The electric lock doesn’t work.
In installations with multiple points of entry, calling on one of
the entrance panels does not deactivate the other panels of
the system.
In housing compound installations, making a call from one of
the external entrance panels does not disable the entrance
panels of the building which is being called.
S Y S T E M S
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 device is in ON position. Check connections D1 and D2
from the audio unit to all the devices. If required, check connections
D3, D2 and D5, D4 of the equipment in the installation. If you
cannot find the fault, the telephone, the audio unit or some other
equipment in the installation may have broken down.
Check the volume control on the panel. If you cannot find the fault,
there may be something wrong with the audio unit.
Check the cable connections between the receiver ande the base
of telephone. Check the hanging-up button on the base of the
telephone. If you cannot find the fault, there may be something
wrong with the telephone.
Check the volume control on the devices (on the panel). If you
cannot find the fault, there may be something wrong with the
audio unit.
Check the cable connections between the receiver ande the base
of telephone. Check the hanging-up button on the base of the
telephone. If you cannot find the fault, there may be something
wrong with the telephone.
Adjust the feedback control of the audio unit (see step 8 on page
13). If the feedback persists, lower the volume using the volume
controls of the audio unit.
Check that the voltage between 11 and 12 in the audio unit is 15
± 10% Vdc, by making a bridge between terminals 22 and 18.
If you cannot find the fault, there may be something wrong with
the electric lock.
Check connections D3, D2 between the different panels of the
system. If you cannot find the fault, there may be something wrong
with the audio unit.
Check connections D3, D2 from the entrance panel to the identifying
accessories of the building. If the fault cannot be found, there may
be something wrong with the audio unit or the identifying accessory.