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Installing an Extreme Networks AC PSU
BlackDiamond 8800 Series Switches Hardware Installation Guide
93
To remove or replace an Extreme Networks AC PSU:
1 Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to the ground
receptacle on the top-left corner of the switch front panel (if not already attached).
2 For the AC power cord:
● If you are replacing only the power supply and you will use the existing AC power cord for the
new PSU, you do not need to unplug the AC power cord.
● If you are removing and replacing an AC power cord:
■ Remove the power cord retaining bracket as described in “Disconnecting a BlackDiamond
8810 AC Power Cord” on page 127 or “Removing the BlackDiamond 8806 AC Power Cord
Retainer Channel” on page 130.
■ Completely disconnect and remove the old power cord.
■ Connect the new AC power cord to the AC input on the front of the switch and then connect
the opposite end of the AC power cord to the wall outlet.
■ After the cord is connected, re-install the power cord retaining bracket.
3 Lift the handle on the PSU.
4 Pull the handle of the PSU to disconnect the PSU from the power connector at the back of the power
supply bay. Slide the PSU partway out of the bay.
5 Wearing thermal protective gloves, place both hands underneath the PSU to support the weight as it
is pulled out from the switch.
6 To install a replacement PSU, follow the steps under “Installing the PSU” on page 91.
NOTE
Leave the ESD strap permanently connected to the switch, so that the strap is always available when you need to
handle ESD-sensitive components.
LEDs on the 700/1200 W AC PSU
The front panel of the Extreme Networks 700/1200 W AC PSU provides status LEDs. Table 16 describes
the LED activity.
Table 16: LEDs on the 700/1200 W AC PSU
PSU Condition
Power
Green
Predictive Fail
Amber
Fail
Amber
Power supply AC outputs working normally On Off Off
AC input power present/standby output on Blinking Off Off
Current limit on 48 VDC output On Off Blinking
Predictive failure On Blinking Off
No input power to this PSU only Off Off On
No input power to any PSU Off Off Off
Power supply failure Off Off On