Conventional Systems Technical Manual - Alcad

ELECTRONIC DOOR ENTRY INSTALLATIONS WITHCONFIDENTIALITY FEATURE. ELECTRONIC CALL.CONVENTIONAL 4+N SYSTEMSTANDARD INSTALLATION IN BUILDINGNothing works.Check the mains voltage in the power supply. Check that thevoltage between V~, of the power supply is 12 ± 10% Vac.Check wether there is a short circuit and fix it. Disconnect thepower supply for 1 minute and then connect it up again.If it still doesn't work, disconnect all the power supplyV~, terminals, and check that the voltage between V~, is12 ± 10% Vac, if it is not, then there may be something wrongwith the power supply.The card holders don't light up.Check that the voltage between V~, of the power supply is12 ± 10% Vac.Check that the voltage between 9,10 in the audiounit, with the lighting push button activated, is 12 ± 10%Vac.Check wether the lamp has burnt out.The lighting push button pilot does not light up.Check that the voltage between the V~, of the audio unit is12 ± 10% Vac. If the voltage is correct, there may be somethingwrong with the audio unit.The call tone doesn’t ring on any telephone.Check that the voltage between 7,2 in the audio unit, withoutpressing the push button, is 14.5 Vdc. Check the connection between7 in the audio unit and the push buttons. Check connection2 from the audio unit to the telephones. If you cannot find thefault, there may be something wrong with the audio unit.The call tone doesn’t ring in a telephone.Check that the telephone is not off the hook. Check connections5,2 from the telephone to the entrance panel. Check the push-buttonconnection on the entrance panel. If you cannot find the fault,there may be something wrong with telephone or the panel pushbutton.You cannot hear the call confirmation on the entrancepanel.Check that you can hear the telephones on the entrance panel.Check that the call tone rings on the telephones. If you cannotfind the fault, there may be something wrong with the audio unit.You cannot hear any telephones from the entrancepanel.Check connections 3,2 from the audio unit to all the telephones.Check the volume control on the panel. If you cannot findthe fault, there may be something wrong with the audio unit.You cannot hear a telephone from the entrancepanel.Check connections 3,2 from the telephone to the audio unit.If you cannot find the fault, there may be something wrong withthe telephone.You cannot hear an entrance panel on any telephone.Check connections 4,2 from the audio unit to all the telephones.Check the volume control on the telephones on theentrance panel. If you cannot find the fault, there may be somethingwrong with the audio unit.You cannot hear the entrance panel on a telephone.Check connections 4,2 from the telephone to the audio unit.If you cannot find the fault, there may be something wrong withthe telephone.You can hear whistling in the panel. The soundproduces feedback.Lower the sound level using the volume control on the audiounit.The electric lock doesn’t work.Check that the voltage between 1,2 in the audio unit, withoutpressing the lock release button, is 5 Vdc. Check that the voltagebetween 11,12 in the audio unit, when you press the lockrelease button, is 12 ± 10% Vac. If you cannot find the fault,the electric lock may be broken.296