Fujitsu BS2000 SE Series Operating Manual page 82

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Element Meaning
ID ID indicator (blue)
Lights up blue when the HNC has been selected by pressing the ID button. To deactivate, press the
button again.
CSS CSS and Global error indicator (yellow/orange)
Generally, the states of these indicators have the following meanings:
Do not light up when the HNC is OK.
If the event is still acute after a power failure, the indicator is activated after the restart.
Light up when a prefailure event was detected. The indicator also lights up in standby mode.
Flash when an error was detected. The indicator also flashes in standby mode.
Irrespective of the color, when an indicator lights up or flashes this indicates an error event. Please
notify customer support.
LAN indicators
Figure 45: LAN indicators (HNC M1)
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