Table of Contents
Advertisement
Turn on the Extreme 9920
After connecting the DC power supply to the power source, the DC circuit can be energized. Follow the
instructions in the topic
for the DC power supply unit is solid green when connected and operating normally.
Turn on the Extreme 9920
An AC power cord is not included with the AC power supply. You can purchase AC power cords for
use in the US and Canada from Extreme Networks or from your local supplier. The cord must meet the
requirements listed in
page 64.
Use the following instructions to turn on the device.
1. For devices that are connected to AC power, connect the power cord to the AC power input socket
on the device (or power supply) and to an AC power outlet.
2. For devices that are connected to DC power, do the following:
a. Verify that the DC circuit is de-energized.
b. Verify that the ground wire is connected to the grounding lug on the rear of the device.
The grounding lug is identified by the international symbol for earth ground:
c. Verify that the DC power input cables are properly connected to the DC power supplies at the
rear of the device.
d. Energize the circuit.
3. When power is connected, verify that the PSU LED is green.
If the PSU LEDs do not turn green, refer to the
troubleshooting information.
46
9920 Network Packet Broker Hardware Installation Guide
Turn on the Extreme 9920
Power Cord Requirements for AC-Powered Switches and AC Power Supplies
9920 LEDs
Install the Device and the Components
on page 46 to energize the DC circuit. The LED light
on page 54 topic for your device for
on
Advertisement
Table of Contents
