Turn On The Extreme 9920 - Extreme Networks 8520 Series Hardware Installation Manual

Install the Switch
Procedure
1. Verify that the DC circuit is de-energized.
2. Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an
appropriate ground point on the rack.
3. Plug the connector that contains the negative (V+DC) and positive (V-DC) wires to the power
supply.
4. Connect the cables to the DC source voltage, using hardware appropriate to the installation site and
following local and national electrical codes.
What to Do Next
Power up to the switch, following the steps in
Leave the ESD strap permanently connected to the rack, so that the strap is always available when you
need to handle ESD-sensitive components.

Turn on the Extreme 9920

Before You Begin
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 mee the
requirements listed in
page 74.
About This Task
Use the following instructions to turn on the device.
Procedure
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.
What to Do Next
If the PSU LEDs do not turn green, refer to the either the
topic or the
information.
Power Cord Requirements for AC-Powered Switches and AC Power Supplies
750 W DC Power Supply LEDs
Turn on the Extreme 9920
750 W AC Power Supply LEDs
on page 58 topic for your device for troubleshooting
Extreme 8520 Series Hardware Installation Guide
Turn on the Extreme 9920
on page 45.
on page 58
on
45