Installation manual

AC Power Supply
The AC power supply for the BlackDiamond X series delivers 2500 W when operated from 185 to 264
VAC, or 1250 W when operated from 90 to 140 VAC.
Figure 12: BlackDiamond X series AC Power supply
1 = LEDs 3 = Inserter/extractor lever
2 = Release button
Each AC PSU contains two cooling fans at the front of the unit. Airflow is from front to back.
The BlackDiamond X series AC power supply does not contain a field-operator-replaceable fuse.
Warning
Field operators must not attempt to configure or replace fuses in Extreme Networks AC
power supplies. In the event of failure, immediately return the defective Extreme Networks
AC power supply for a complete replacement.
For information about installing the BlackDiamond X series AC PSU, see Installing Power Supplies on
page 54.
For more information on PSU redundancy, see Understanding PSU Redundancy in the BlackDiamond X
series Chassis on page 29.
Reading AC Power Supply LEDs
The BlackDiamond X series AC power supply has status LEDs on the front panel. The following table
describes the meanings of the power supply LEDs:
Table 8: LEDs on the BlackDiamond X series AC Power Supply
LED Type and Color
Power Supply Condition AC OKGreen DC OKGreen ALMRed
No AC input power to any power supply.
(Receiving standby output from backplane)
Off Off Off
AC input power is present.
48 V output is disabled.
Standby output is ON.
On Off Off
Understanding Power Supplies
BlackDiamond X Series Switches Hardware Installation Manual 31