Specifications

151117 6-1
Section 6
S
y
stem Operation
The annunciator on the SK-6324 board is used for all system operation. It contains the
switches (Figure 6-2) for enabling silencing, resetting, and so on. The LEDs (Figure 6-1) that
indicate system status are also located on the annunciator.
Figure 6-1 On-Board Annunciator
6.1 Meaning of LEDs
The chart below explains the meaning of LEDs on the system board.
Table 6-1: Meaning of LEDs
LED (Color) Function Comments
AC POWER (green) ON = Good AC
OFF = Low AC trouble condition and it was acknowledged
FLASHING = Unacknowledged AC Low trouble condition
If flashing press the ACK button to
acknowledged the condition.
GENERAL TROUBLE
(yellow)
ON = System trouble
OFF = System OK
FLASHING = At least one serial device is in trouble
DOUBLE FLASHING = Two types of serial devices are in trouble.
SYSTEM SILENCED
(yellow)
ON = System audible output has been silenced
OFF = Nothing silenced
FLASHING = Partially silenced
Audible trouble activations will clear
automatically when the condition resets.
Audible alarm signals have to be
manually reset.
Note:
Silencing an alarm will
cause a general trouble condition.