Extreme 3802 Hardware Manual

146

Extreme Networks Consolidated Hardware Guide

If you are going to install a replacement power supply, follow the installation steps on page 142. 

If there is a problem with the power supply that you removed, contact Extreme Networks for 
assistance. Do not attempt to fix a faulty power supply. Personal injury to yourself or others may 
occur.

Leave the ESD strap permanently connected to the chassis so that it is always available when you 
need to handle ESD-sensitive components.

Supplying Power to the Alpine 3802 AC Power Supply

The Alpine 3802 switch supports up to two AC power supplies that come preinstalled from the factory.

Ground the rack, mount the chassis in a rack, and ground the chassis before installing any switch 
components. For more information about grounding the rack, see “Protective Grounding for the Rack” on 
page 52. For more information about grounding the chassis, see “Grounding the Alpine 3800 Series 
Chassis” on page 138.

To turn on power to the system, connect the power cable to the power supply and then to the wall 
outlet. 

In the event of a power supply failure, please contact Extreme Networks about servicing and replacing 
your power supply.

After you supply power to the Alpine switch, the switch performs a power-on self test (POST).

During the POST, all ports are temporarily disabled, the packet LED is off, the power LED is on, and 
the MGMT LED flashes. The MGMT LED flashes until the switch successfully passes the POST.

If the switch passes the POST, the MGMT LED blinks at a slow rate (one blink per second). If the switch 
fails the POST, the MGMT LED shows a solid yellow light.

See Chapter 9, “Alpine 3800 Series Switch Management Module” for more information about switch 
management module LED activity and Chapter 10, “Alpine 3800 Series I/O Modules” for more 
information about I/O module LED activity.