15073 OWNER’S MANUAL
447179 Issue 1 Rev. A
43
8.
8. TROUBLE
TROUBLESHOOTING
SHOOTING
This section describes the LED states and provides possible trouble conditions of the 15073.
8.1 LED INDICATORS
Light-emitting diodes (LEDs) indicate fault and normal conditions. The seven LEDs indicate a fault
condition in one of the circuits (either outputs 1 through 4, auxiliary power, ground fault, or battery). A fault
condition in the LEDs corresponding circuit will turn on the LED (labeled on the board). The POWER LED
will normally be on and turn off to indicate an AC fault condition. See Figure 2-2 for locations of LEDs.
Their functions are as follows:
DESIGNATION
MARKING
COLOR
DESCRIPTION
DS1
OUTPUT1
Yellow
NAC 1 trouble LED.
DS2
OUTPUT2
Yellow
NAC 2 trouble LED.
DS3
OUTPUT3
Yellow
NAC 3 trouble LED.
DS4
OUTPUT4
Yellow
NAC 4 trouble LED.
DS5
AUX. P.S.
Yellow
Auxiliary power output trouble LED
DS6
GRND
Yellow
Ground fault LED
DS7
BATTRY
Yellow
Battery trouble LED
DS8
POWER
Green
AC Power normal LED
8.2 IMPROPER OPERATION
If there is improper operation of the activation of the outputs, check for the following:
Was the reset switch SW2 pressed after changing the DIP switch settings?
Are the DIP switch settings correct for the application?
(See Section 5.1)
Are the jumper settings correct for the application?
(See Section 5.2)
Are the inputs activating correctly?
Are the correct type of notification appliances connected?
(Conventional or Sync Strobes/Horns)
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