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APC 15000 RAID User Manual

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104 
007-5510-002
5.4.2
Internal 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 
.
5.4.3
Rear 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 5–4
 INTERNAL LED Indicators
Description
Location
Color
Normal Behavior
Enclosure Audible 
Alarm
DEM DC
DEM internal to 
enclosure
GREEN
ON-1.2VDC regulator circuit correctly 
functioning
OFF- faulty 2.1VDC  regulator circuit
Off
DEM ID
DEM internal to 
enclosure
BLUE
ON-receiving SES identity command
OFF-NOT receiving SES identity command
Off
HDD ID
HDD internal to 
enclosure
BLUE
ON-receiving SES identity command
OFF-NOT receiving SES identity command
Off
Table 5–5
 LEDs on the Rear of the Enclosure
Description
Location
COLOR
Normal Behavior
Enclosure Audible 
Alarm
PCM DC ok
PCM
rear of enclosure
GREEN
ON-DC output of PCM within tolerances.
OFF-failed PCM
Off
PCM AC ok
PCM
rear of enclosure
GREEN
ON-AC input to PCM within tolerances.
OFF-failed PCM
Off
PCM Fault
PCM
rear of enclosure
AMBER ON - PCM fault detected
OFF - no detected PCM faults.
Off
PCM ID
PCM
rear of enclosure
BLUE
ON-receiving SES identity command
OFF-NOT receiving SES identity command
Off
I/O Module ok I/O Module
rear of enclosure
GREEN
ON-properly booted and functioning 
correctly.
OFF-I/O Module internal fault
Off
I/O Fault
I/O Module
rear of enclosure
AMBER ON - I/O module  fault detected
OFF - no detected I/O module faults.
Off
I/O Module ID I/O Module
rear of enclosure
BLUE
ON-receiving SES identity command
OFF-NOT receiving SES identity command
Off