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Table 4. PSU LED states
PSU Fail
(Amber)
AC Missing
(Amber)
Power (Green)
Status
Off
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
Main AC present, switch on. This PSU is
providing power.
Off
Off
Flashing
AC power present, PSU in standby (other PSU
is providing power).
Flashing
Flashing
Off
PSU firmware download
Off
On
Off
AC power missing, PSU in standby (other PSU
is providing power).
On
On
On
Enclosure management software has lost
communication with the PSU.
On
-
Off
PSU has failed. Follow the procedure in
"Replacing a Power Supply Unit (PSU)."
Cooling module LEDs
Figure 22. Cooling module LEDs
Table 5. Cooling module LED descriptions
LED
Description
Module OK
Constant green indicates that the fan is working correctly. Off means the fan
has failed. Follow the procedure in "Replacing a Cooling Module."
Battery Fault
Not currently used.
Fan Fault
Amber indicates that a fan has failed. Follow the procedure in "Replacing a
Cooling Module."
30 IBM ESS expansion: Installation and User Guide - Model 084
Summary of Contents for 084
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