Replace A Power Supply - Extreme Networks Universal Compute Platform Appliance 4120C Installation Manual

Replace a Power Supply

About This Task
The appliance supports two power supplies, supplying hot pluggable power redundancy. The system
distributes the power load across both power supplies to maximize efficiency. When a power supply is
removed with the system powered on, the full power load is picked up by the remaining power supply.
Note
The system ships with two power supplies and you have the option to purchase a
replacement power supply using the ordering part number 30527 WS-PSI-1100W-01.
Note
The system requires one power supply to operate normally. Remove and replace only one
power supply at a time in a system that is powered on.
Each power supply has a single bi-color LED to indicate power supply status, as described in the
following table:
Table 4: Power supply status LED indicator patterns
Power supply condition
Output on and OK
No AC power to all power supplies
AC present or only 12VSB on (PS off) or PS in cold
redundant state
AC power cord unplugged or AC power lost. With
a second PS in parallel still with AC input power
Power supply warning events where PS continues
to operate - high temp, high power, high current,
slow fan
Power supply critical event causing a shutdown,
failure, OCP, OVP, fan fail
Power supply firmware updating
To replace a power supply:
Procedure
1. Detach the power supply cord from the power supply that needs to be removed.
14 Extreme Networks Universal Compute Platform Appliance 4120C
LED pattern
Green
Off
1Hz blinking green
Amber
1Hz blinking amber
Amber
2Hz blinking green