Figure 6. AC PSU status indicator
1. AC PSU status indicator/handle
Convention Power indicator
pattern
Condition
A Green The handle indicator glows green indicating that a valid power
source is connected to the PSU and that the PSU is operational.
B Flashing green When updating the firmware of the PSU, the PSU handle glows
green.
C Flashing green
and turns off
When hot-swapping a PSU, the PSU handle blinks green five times at
4 Hz rate and turns off. This indicates that the PSU is mismatched
with the other PSU (in terms of efficiency, feature set, health status,
and supported voltage). Replace the PSU that has the blinking
indicator with a PSU that matches the capacity of the other installed
PSU.
NOTE: For AC PSUs, use only PSUs with the Extended Power
Performance (EPP) label at the back. Mixing PSUs from previous
generations of servers can result in a PSU mismatch condition
or failure to turn on.
D Flashing amber Indicates an issue in the PSU.
CAUTION: When correcting a PSU mismatch, replace only the
PSU with the flashing indicator. Swapping the opposite PSU to
make a matched pair can result in an error condition and
unexpected system shutdown. To change from a High Output
configuration to a Low Output configuration or vice versa,
you must turn off the system.
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