Dell EMC ME4 Series Owner's Manual page 39

Fan cooling module LEDs
See Fan cooling module (FCM)
Table 19. FCM LED descriptions
LED Status/description
Module OK Constant green indicates that the FCM is working correctly. Off indicates the fan module has failed. Follow the procedure
in Replacing a Fan Controller
Fan Fault Amber indicates the fan module has failed. Follow the procedure in
Ops panel LEDs
The Ops panel displays the aggregated status of all the modules.
Table 20. Ops panel LED descriptions
LED Status/description
Unit ID Usually shows the ID number for the enclosure, but can be used for other purposes, for example, blinking to locate
display enclosure.
Power On/ Amber if the system is in standby. Green if the system has full power.
Standby
Module Fault Amber indicates a fault in a PSU, FCM, or IOM. Check the drawer LEDs for indication of a disk fault.
Logical Amber indicates a fault from something other than firmware (usually a disk, an HBA, or an internal or external RAID
status controller). Check the drawer LEDs for indication of a disk fault. See
Drawer 0 Amber indicates a disk, cable, or sideplane fault in drawer 0. Open the drawer and check DDICs for faults.
Fault
Drawer 1 Amber indicates a disk, cable, or sideplane fault in drawer 1. Open the drawer and check DDICs for faults.
Fault
Drawer LEDs
See Drawer bezel details for a visual description of the Drawer LED inserts located on each drawer bezel.
Table 21. Drawer LED descriptions
LED Status/description
Sideplane Green if the sideplane card is working and there are no power problems.
OK/Power
Good
Drawer Fault Amber if a drawer component has failed. If the failed component is a disk, the LED on the failed DDIC will light amber.
Follow the procedure in
failure, and resolve the problem.
Logical Fault Amber (solid) indicates a disk fault. Amber (blinking) indicates that one or more storage systems are in an impacted state.
for a visual description of the Fan Cooling Module (FCM) faceplate.
Module.
Replacing a DDIC. If the disks are OK, contact your service provider to identify the cause of the
Replacing a Fan Controller Module.
Drawer LEDs.
Troubleshooting and problem solving 39