System
Power
(Green/
Amber)
Module Fault
(Amber)
Identity
(Blue)
LED display Associated LEDs/
Alarms
Status
On Blink X X Module status LED on
SBB module
Unknown (invalid or mixed) SBB module
type is installed, I
2
C bus failure (inter-
SBB communications). EBOD VPD
configuration error
On Blink X X PCM fault LEDs, fan
fault LEDs
Unknown (invalid or mixed) PCM type is
installed or I
2
C bus failure (PCM
communications)
X Blink Enclosure identification or invalid ID
selected
X= Disregard
Actions:
• If the Ops panel Module Fault LED is on, check the module LEDs on the enclosure rear panel to narrow the fault to a CRU, a
connection, or both.
• Check the event log for specific information regarding the fault, and follow any Recommended Actions.
• If installing a controller module or IOM CRU:
• Remove and reinstall the controller module or IOM per the Dell EMC PowerVault ME4 Series Storage System Owner’s Manual.
• Check the event log for errors.
• If the CRU Fault LED is on, a fault condition is detected.
• Restart this controller from the partner controller using the ME Storage Manager or CLI.
• If the restart does not resolve the fault, remove the controller module or IOM and reinsert it.
• If the previous actions do not resolve the fault, contact Dell EMC for assistance.
Disk drive carrier module LEDs
A green LED and amber LED mounted on the front of each drive carrier module display the disk drive status.
• In normal operation, the green LED is on and flickers as the drive operates.
• In normal operation, the amber LED is:
• Off if there is no drive present.
• Off as the drive operates.
• On if there is a drive fault.
Figure 32. LEDs: Drive carrier LEDs (SFF and LFF modules)
5U enclosure LEDs
Use the LEDs on the 5U enclosure to help troubleshoot initial start-up problems.
NOTE:
When the 5U84 enclosure is powered on, all LEDs are lit for a short period to ensure that they are working. This
behavior does not indicate a fault unless LEDs remain lit after several seconds.
64 Troubleshooting and problem solving
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