Installation Guide

The Summit 750 W AC power supply has the status LEDs listed in the following table.
Table 52: Summit 750 W AC Power Supply LED Status Indications
Label and Color State Meaning
AC OK
Green
O No AC input
On AC input is good.
DC OK
Green
O Both DC outputs (55 V and 12 V) are bad or not enabled.
Blinking One output is enabled and good; the second output is bad or not
enabled.
On Both the 55 V and 12 V outputs are enabled and good.
ALM
Red
O No fault condition exists.
Blinking Power supply alert: power supply is likely to fail because of a developing
fault, such as abnormal thermal conditions or poor fan performance.
or
One output (55 V or 12 V) is bad.
On Both outputs (55 V and 12 V) are bad.
Power supply is receiving 3.3 VSB from the system. (AC OK and DC OK
are o.)
Thermal shutdown, fan failure, or any fault condition when both 55 V and
12 V are turned OFF.
750 W AC and DC Power Supplies
750 W power supplies are available for the ExtremeSwitching X695 switch in the following models:
• 750W AC power supply - front-to-back airflow (part no. XN-ACPWR-750W-F)
• 750W AC power supply - back-to-front airflow (part no. XN-ACPWR-750W-R)
• 750W DC power supply - front-to-back airflow (part no. XN-DCPWR-750W-F)
• 750W DC power supply - back-to-front airflow (part no. XN-DCPWR-750W-R)
Note
AC power input cords are not provided with AC power supplies. You can order an appropriate
cord from Extreme Networks or from your local supplier. The power cord must meet the
requirements listed in Power Cord Requirements for AC-Powered Switches and AC Power
Supplies on page 476.
The power supply must have the same airflow direction (front-to-back or back-to-front) as the switch
with which it is being used. In a redundant power configuration, the airflow direction must be the same
for both power supplies, and it must match the airflow direction of the fans in the switch.
For information on installing or replacing an AC or DC power supply, see the following topics:
• Install a 300 W or 750 W Internal AC Power Supply on page 252
• Install a 750 W DC Power Supply on page 243
The following tables describe the meanings of the LEDs on the 750 W AC power supply (part number
XN-ACPWR-750W-F or XN-ACPWR-750W-R).
Power Supplies for Use with Your Switch
750 W AC and DC Power Supplies
ExtremeSwitching Hardware Installation Guide 135