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Installing and Connecting Alpine 3800 Series Switch Power Supplies
Removing the Alpine 3808 or Alpine 3804
DC Power Supply
You need the following tools and equipment to remove the Alpine 3808 and the Alpine 3804 DC power
supplies:
• ESD-preventive wrist strap
• # 2 Phillips screwdriver
• Replacement DC power supply
To remove a DC power supply from the Alpine 3808 or the Alpine 3804 switch:
1 Turn the power supply on/off switch to the off position.
2 Turn off the DC power at the source.
3 Attach the ESD strap to your wrist and connect the metal end of the ESD strap to the ground
receptacle on the top right corner of the switch front panel.
4 Verify that the rack and chassis are grounded to protective earth ground.
5 Remove the plexiglas cover that shields the power connection on the power supply.
6 Disconnect the DC power and ground cables as follows:
a Remove the plastic cover over the connection terminal block.
b Remove the nuts and lock washers holding the cable lug to the studs.
c Pull the cable lug off the studs.
7 Replace the plastic cover.
8 Slide the locking safety latch on the power supply in the direction marked "remove."
CAUTION
Make sure that the latch is in the remove position. You cannot remove the power supply unless the
latch is in the remove position.
9 Use a #2 Phillips screwdriver to unscrew the screw on the ejector/injector lever. Then pull the
ejector/injector lever towards you to disengage the power supply connections from the backplane.
Hold on to the central handle to steady the power supply.
CAUTION
When you remove a power supply, use one hand to support the power supply from the bottom and
the other hand to hold the central handle on the front of the power supply. Do not use just the
ejector/injector lever to remove a power supply.
10 Use one hand on the central handle to slowly pull the power supply towards you. Place your other
hand beneath the power supply to support it as you pull it out of the chassis.
11 If you are going to install a replacement power supply, follow the installation steps on page 163.
12 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.
170
Extreme Networks Consolidated "e" and "i" Series Hardware Installation Guide
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