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