Operation Manual

154
TROUBLESHOOTING HINTS
An easy way to check that the system is working properly is to disconnect the wiring from the door panel
andtocheckthemonitordirectlyconnectedtothesoundmodule.
Noshortcircuit willdamagetheconnectedunits,withtheexceptionof ashortcircuitbetweenCTOand' '
monitorordistributorterminals.
O Nothingoperates.
w Check the output power supply voltage between ' ' and '+' terminals: it should have 17,5 to
18,5Vd.c. If not, disconnect the power supply from the installation and measure again. If it's
correct now, it means there is a short circuit in the installation: disconnect the power supply
frommainsandchecktheinstallation.
w Checkthat'D'terminalisnotshortcircuitedwith' 'or'+'terminals.
w Checkthat'D'terminalhasn'tbeenchangedby'A'terminalsomewhereintheinstallation.
O Inappropriateaudiolevel.
w Adjustthelevelvolumesasshownonpage120.Incaseoffeedback,reducetheaudiolevelsuntil
feedbackfadeout.Iffeedbackdon'tdissapearsrefertothefollowinghint.
O Continuousaudiofeedback.
w Checkthat'A'terminalisnotshortcircuitedwithotherterminals.
O Dooropenfunctionnooperates.
w Rememberthatthisfunctionisonlyavailableduringcallandcommunicationprogresses.
w
w
O Thesystemcannotbeprogrammed.
w Check that the switch number 2 of the SW2 configuration dip switch is set to ON (see page 116)
andthattheprogrammingstepsarecorrectlyfollowed.
w Checkthat'D'terminalisnotshortcircuitedwithotherterminals.
O Someunitsdon'treceivecalls.
w Rememberthateachapartmentmusthaveamasterunitonly.Checkthattheunitsareswitchedon
andcorrectlyprogrammed.
O Therearenovideoimage.
w Checkthenumber4ofthedipswitchSW1ofthemodule631PlusisinOFF(seepage115).
w Check there is supply in the distributors, the voltage between '+' and '-' terminals should have 15
to18Vd.c.
O Push buttons don't work.
w Check that pressing the push button the door panel reproduce an acoustic confirming tone, if
not check the wiring and configuration of the push buttons (pages 113 to 114).
w If confirmation of pulsation exists, check the monitors or telephones programming (pages 128,
131and135).
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The CV1 and CV2 terminals for door opening are voltage free outputs. The cable requires a
connectiondependingonwhether12Vdc(page137to148)or12Vac(page136)isneeded.
Make a short circuit between the 'CV1' and 'CV2' terminals on the sound module; there should
be12V(d.c.ora.c.dependingonthetypedoorreleaseinstalled)betweentheterminalsonthe
doorrelease.Ifso,checkthelockreleaseanditswiring.