Psu Leds; Psu Led States - IBM 5147-084 Installation And User Manual

PSU LEDs

Figure 21. PSU LEDs
Table 2. PSU LED states
AC Missing
PSU Fail (Amber) (Amber)
Off Off
On On
Off Off
Off Off
Flashing Flashing
Off On
On On
On -
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Installation and User Guide - Model 084
Power (Green) Status
Off No AC power to either PSU.
Off PSU present, but not supplying power or PSU alert
state (usually due to critical temperature).
On Main AC present, switch on. This PSU is providing
power.
Flashing AC power present, PSU in standby (other PSU is
providing power).
Off PSU firmware download
Off AC power missing, PSU in standby (other PSU is
providing power).
On Enclosure management software has lost
communication with the PSU.
Off PSU has failed. Follow the procedure in "Replacing
a Power Supply Unit (PSU)."