Owners Manual

5U84 enclosure PSU LEDs
See Power supply module on page 19 for a visual description of the Power Supply Unit (PSU) module faceplate.
Table 15. PSU LED states
CRU Fail
(Amber)
AC Missing
(Amber)
Power
(Green)
Status
On Off Off No AC power to either PSU
On On Off PSU present, but not supplying power or PSU alert state. (usually due to critical
temperature)
Off Off On Mains AC present, switch on. This PSU is providing power.
Off Off Blinking AC power present, PSU in standby (other PSU is providing power).
Blinking Blinking Off PSU firmware download in progress
Off On Off AC power missing, PSU in standby (other PSU is providing power).
On On On Firmware has lost communication with the PSU module.
On -- Off PSU has failed. Follow the procedure in Replacing a power supply unit (PSU) in a
5U enclosure on page 67.
5U84 enclosure FCM LEDs
See Fan cooling module on page 19 for a visual description of the fan cooling module (FCM) faceplate.
Table 16. FCM LED states
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 cooling module (FCM) in a 5U enclosure on page 69 to replace the fan controller
module.
Fan Fault Amber indicates the fan module has failed. Follow the procedure in Replacing a fan cooling module (FCM) in a
5U enclosure on page 69 to replace the fan controller module..
5U84 enclosure Ops panel LEDs
The Ops panel displays the aggregated status of all the modules.
Table 17. Ops panel LED states
LED Status/description
Unit ID
display
Usually shows the ID number for the enclosure, but can be used for other purposes, for example, blinking to
locate enclosure.
Power On/
Standby
Amber if the system is in standby. Green if the system has full power.
Module
Fault
Amber indicates a fault in a controller module, IOM, PSU, or FCM. Check the drawer LEDs for indication of a
disk fault.
Logical
status
Amber indicates a fault from something other than firmware (usually a disk, an HBA, or an internal or external
RAID controller). Check the drawer LEDs for indication of a disk fault. See 5U84 enclosure drawer LEDs on page
38.
Drawer 0
Fault
Amber indicates a disk, cable, or sideplane fault in drawer 0. Open the drawer and check DDICs for faults.
Drawer 1
Fault
Amber indicates a disk, cable, or sideplane fault in drawer 1. Open the drawer and check DDICs for faults.
Troubleshooting and problem solving 37