System Power Led (Green); Status/Health Led (Blue/Amber); Unit Identification Display (Green) - Dell EMC ME4 Series Owner's Manual

Figure 28. LEDs: Ops panel—2U enclosure front panel
Table 4. Ops panel functions (see left ear on 2U front panel)
No. Indicator
1 System power
2 Status/Health
3 Unit identification display
4 Identity

System power LED (green)

LED displays green when system power is available. LED is off when system is not operating.

Status/Health LED (blue/amber)

LED illuminates constant blue when the system is powered on and functioning normally. LED blinks blue when enclosure management is
busy, for example, when booting or performing a firmware update. LEDs helps you identify which component is causing the fault. LED
illuminates constant amber when experiencing a system hardware fault which could be associated with a Fault LED on a PCM or IOM. LED
illuminates blinking amber when experiencing a logical fault.

Unit identification display (green)

The UID is a dual seven-segment display that shows the numerical position of the enclosure in the cabling sequence. This is also called the
enclosure ID. The controller enclosure ID is 0.
Status
Constant green: at least one PCM is supplying power
Off: system not operating regardless of AC present
Constant blue: system is powered on and controller is ready
Blinking blue (2 Hz): Enclosure management is busy
Constant amber: module fault present
Blinking amber: logical fault (2 seconds on, 1 second off)
Green (seven-segment display: enclosure sequence)
Blinking blue (0.25 Hz): system ID locator is activated
Off: Normal state
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