CHAPTER
FOUR
REPLACING POWER SUPPLY UNITS
This section describes how to detect and replace a failed power supply unit (sometimes abbreviated PSU) on a FXT
5000 Series node.
Before replacing a power supply unit, review the following warnings:
•
(page 4)
•
(page 5)
•
(page 5)
•
(page 6)
4.1 Detecting a Failed Power Supply Unit
An FXT 5000 Series node has two power supply units. If either unit fails, the other continues to provide full power
to the node, which continues to operate without interruption.
During a single power supply unit failure:
• The node emits an audible alarm
• The information LED on the front of the node flashes red at 0.25Hz (once every four seconds)
• A yellow warning alert about a power supply error appears on the status page of the Avere Control Panel
These conditions will continue until the failed power supply unit is replaced.
The information LED on the front of the node chassis does not indicate which of the two power supply units has
failed.
As an aid to determining which unit has failed, check the LED beside the node’s power cord connection on the rear
of the chassis.
• On a functioning power supply, the LED will be green.
• If the power supply has failed, the LED will be yellow or off.
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