3Com 6000 manual This message is immediately overwritten with

What’s New at Revision 8.2.0? 19

Hot-swappable Power Supplies. You can remove and replace either of the two power supplies at the back of the chassis. Turning off one of the power supplies generates a sound, and the control panel LCD displays Input Failure. The LED of each power supply lights green when the power supply is running correctly. If the power supply fails, the system generates a sound and the power supply LED does not light.

To remove a faulty power supply and replace it with a new unit, follow these steps:

1Turn off the power supply according to the safety and removal procedures in the Installation Guide that is shipped with the new power supply. The system control panel displays the following message (where n designates power supply 1 or power supply 2):

Power Supply n: Input Failure

2Remove the power supply. The system generates a sound, and the system control panel displays the following message:

Power supply n extracted.

3Insert the new power supply, following the instructions and safety warnings in the Installation Guide that comes with the new power supply. The system displays this message:

Inserted

This message is immediately overwritten with:

Input Failure

4Turn on the power supply. The system generates a sound and the system control panel displays:

Input restored