APC 15000 RAID manual Internal Indicators, Rear of Enclosure Activity Indicators

5.4.2Internal Indicators

Note In some components, the failure LED is internal to the enclosure and visible only when the cover is open. The Internal LED indicators are explained in Table 5–4.

Table 5–4	INTERNAL LED Indicators
Description	Location	Color	Normal Behavior	Enclosure Audible
				Alarm
DEM DC	DEM internal to	GREEN	ON-1.2VDC regulator circuit correctly	Off
	enclosure		functioning
			OFF- faulty 2.1VDC regulator circuit
DEM ID	DEM internal to	BLUE	ON-receiving SES identity command	Off
	enclosure		OFF-NOT receiving SES identity command
HDD ID	HDD internal to	BLUE	ON-receiving SES identity command	Off
	enclosure		OFF-NOT receiving SES identity command

5.4.3Rear of Enclosure Activity Indicators

The PCMs and the I/O Modules are located on the rear of the enclosures. The LEDs on the rear of the enclosure are explained in Table 5–5.

Table 5–5	LEDs on the Rear of the Enclosure
Description		Location	COLOR	Normal Behavior	Enclosure Audible
					Alarm
PCM DC ok		PCM	GREEN	ON-DC output of PCM within tolerances.	Off
		rear of enclosure		OFF-failed PCM
PCM AC ok		PCM	GREEN	ON-AC input to PCM within tolerances.	Off
		rear of enclosure		OFF-failed PCM
PCM Fault		PCM	AMBER	ON - PCM fault detected	Off
		rear of enclosure		OFF - no detected PCM faults.
PCM ID		PCM	BLUE	ON-receiving SES identity command	Off
		rear of enclosure		OFF-NOT receiving SES identity command
I/O Module ok		I/O Module	GREEN	ON-properly booted and functioning	Off
		rear of enclosure		correctly.
				OFF-I/O Module internal fault
I/O Fault		I/O Module	AMBER	ON - I/O module fault detected	Off
		rear of enclosure		OFF - no detected I/O module faults.
I/O Module ID		I/O Module	BLUE	ON-receiving SES identity command	Off
		rear of enclosure		OFF-NOT receiving SES identity command

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