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2-5
Power Supply Unit (PSU) LED
PSU LED
State
Description
OFF
No AC power to all power supplies
1Hz Green Blinking
AC present / only standby on / Cold redundant mode
2Hz Green 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
Amber
Power supply critical event causing shut down:
failure, OCP, OVP, fan failure and UVP
Power supply warning events where the
1Hz Amber Blinking
power supply continues to operate:
high temp, high power, high current and slow fan
System Appearance
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