2
12) To check to see if the zones are operating OK place a 5.6K Ohm resistor (Green-Blue-
Red) across zone 1 input to a COM and the zone 1 LED should go out. Continue the test
by placing the resistor between zone 2 input and a COM, zone 3 input and a COM etc
until all zones are tested (ie the corresponding zone LED goes out for as long as the
resistor is there).
If a zone LED does not go out this could indicate that the zone over voltage
protection device has short circuited due to a high voltage static discharge to the
cabling. This device will need to be replaced by DSC personnel
13) Check that the voltages across the outputs are correct. Place a meter set to 20 volts DC
across the Bell + and – terminals, there should be a reading of around 1.5 volts. If the
reading is 12 to 13.8 volts check to make sure that the system is not in alarm (input the
master code 1234 to cancel an alarm if one exists).
If the unit is not in alarm this output could indicate that the output transistor is
damaged and the unit will need to be repaired.
14) Check that the Strobe output is OK by placing a meter set to 20 volts DC across
PGM1and +AUX terminals for the PC585, PC1565 and Power 608 and PGM2 and
+AUX for the power 832. The voltage should decay to less than 0.5 of a volt within
about 2 seconds. If the voltage remains at 12 to 13.8 volts then check your
programming in location 009 and check that the unit is not in alarm.
If the voltage remains at 12v to 13,5 volts then the output transistor could be
damaged and the unit will need to be repaired.
15) In order to test the alarm and reporting functions place a 5.6 Kohm resistor (Green-
Blue- Red) between zone 1 input and COM, the red LED for zone 1 should go out.
Bypass all other zones – [*1] 02 for zone 2, 03 for zone 3 etc until all zones other than
zone 1 are bypassed. Press [#] the green ready light should now be on.
16) You can now arm the system by using the master code [1234]. After 5 seconds the red
armed LED should be on and the green ready LED should be out. A report will now be
sent to the central station receiver, the panel should report a closing (402) by user 40 as
well as a group bypass (570).
17) To check that the unit has correctly looped the line and then after reporting drops of the
line, connect a meter set to 100 volts DC across the line (Ring and Tip terminals). The
meter will read around 48 volts DC when the dialler is “off line” and will drop to
between 6 volts and 16 volts when the unit is dialling or reporting. What should happen
is that when the dialler loops the line the line voltage will drop to 6 to 16 volts for the
length of time that it takes to dial and then report it’s information, this could take about
15 seconds, if the central station telephone lines are busy the time on line will obviously
be extended until the call is answered.
If the voltage across the telephone line is constant between 6 to 16 volts, this could
indicate that the lightning protection devices are short circuit and will need to be
replaced by DSC.
Caution: The next tests can only be carried out after the unit has been powered
up for more than 3 minutes. This is because some units have the Bypass on
power up feature which bypass zones for a period after power up.
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