2-5
Power Supply Unit (PSU) LED
Color
Off
Green
Green
Amber
Amber
Status
--
No AC power to all power supplies
AC present / only standby on / Cold redundant mode
1Hz Blinking
2Hz Blinking
Power supply firmware updating mode
AC cord unplugged or AC power lost; with a second
power supply in parallel still with AC input power
On
Power supply critical event causing shut down:
failure, OCP, OVP, fan failure and UVP
Power supply warning events where the
1Hz Blinking
power supply continues to operate:
high temp, high power, high current and slow fan
Description
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PSU LED
System Appearance