OPTIONAL CONNECTIONS
141
TROUBLESHOOTING HINTS
A
A
O
w
w
w
w
O
w
O
w
O
w
w
w
O
w
w
O
w
O
w
w
w
O
w
w
n easy way to check that the system is working properly is to disconnect the wiring from the
door panel and to check the monitor directly connected to the EL500/R5 circuit.
short circuit between different terminals of the installation will never damage the connected
systems.
Nothing operates.
Remember that the system remains inactive for 45 seconds after connecting the power
supply, the same occurs upon connecting any unit to the installation.
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 from mains and check the installation.
Check that 'A/D' terminal is not shortcircuited with ' - ' or '+' terminals.
If these tests don't solve the problem, check the voltage between 'B' and 'CP' terminals of the
EL500/R5 circuit; if the measured voltage is different to 12Vd.c. change the EL500/R5
circuit.
Inappropriate audio level.
Adjust the level volumes as shown on page 109. In case of feedback, reduce the audio
levels until feedback fade out. If feedback doesn't disappear refer to the following hint.
Continuous audio feedback.
Check that 'A/D' terminal is not shortcircuited with other terminals.
Door open function no operates.
Remember that this function is only available during call and communication progresses.
The CV1 and CV2 terminals for door opening are voltage free outputs. The cable requires
a connection depending on whether 12Vdc or 12Vac is needed, as shown on page
141.
Make a short circuit between the 'CV1' and 'CV2' terminals on the EL500/R5
microprocessor circuit; there should be12V (d.c. or a.c. depending on the type door
release installed) between the terminals on the door release. If so, check the lock
release and its wiring.
The system cannot be programmed.
Check that the switch number 2 of the configuration dip switch is set to ON (see page 108)
and that the programming steps are correctly followed.
Check that 'A/D' terminal is not shortcircuited with other terminals.
Some units don't receive calls.
Remember that each apartment must have a master unit only. Check that the units are
switched on and correctly programmed.
No video image.
Check that telecamera's protective cover is not on the EL-531 sound module.
Check that dip switch 4 on the EL 500/R5 module is set to ON.
Check that power is reaching the distributors, the voltage between the '+' and '-' terminals
must be between 15 to 18Vd.c.
Push buttons don't work.
When the push button is pressed check that the door panel emits a confirmation tone, if
not, check the wiring of the push buttons (pages 105 to 106).
If there is a confirmation tone, check the programming of the monitors or telephones
(pages 115 and 118).
142
E
xternal lock release activation.
The lock release can be activated at any moment by using an external push button, that must be
connected between 'CV1' and 'CV2' of the door panel.
This function will allows to exit from the building being not necessary the use of a key.
CV1 +12
CV2
-
d.c. Lock release
TF-104 and a.c Lock release
A
.
dditional call repeater connection
The SAV-90 call repeater unit allows the call on the monitor to be repeated in another part of
the apartment.
The total number of elements per apartment (monitors, telephones, call repeaters,
etc.) must never exceed two units.
REMEMBER:
SA
+
SAV-90
R. Line
A/D
+
_
SA
Vi+
Vi-
+
_
A/D SA
+
SA
+
SAV-90
T-730/R5
EL 500/R5
Main
CN1
+
-
CV+
CV-
CN2
CN3
FA-PLUS/C
rev. 938072
Main
EL502
EL500/R5
EL502 dc/ac converter and a.c Lock release
CV1 +12
CV2
-
- -
+
+
SEC
PRI
+
-
230 110 0 -
+
CV1 +12
CV2
-
EL 500/R5
TF-104
SEC
PRI
~ ~ ~ ~
Tekna R5
