Leds; Table 18: Leds On The At-Pwr600 Power Supply - Allied Telesis AlliedWare Plus x950 Series Installation Manual

Chapter 1: Overview

LEDs

48
 Installing two power supplies adds power redundancy.
 The power supplies are installed in the PSU A and PSU B slots in
the rear panel of the chassis. If you are installing only one power
supply, Allied Telesis recommends installing it in PSU A slot
because that slot does not come with a blank slot cover.
 The switch does not come with power supplies. They are
purchased separately.

The power supplies are field-replaceable and hot-swappable. If the
switch has two power supplies and one fails, you can replace the
failed unit without having to power off the operational power
supply.
The two LEDs on the front panel of the power supply are described in
Table 18.
Table 18. LEDs on the AT-PWR600 Power Supply
Green LED Amber LED
Solid green Off
Blinking Off
green
Solid green Blinking amber
Off Solid amber
Description
The power supply is operating
normally.
The power supply is in the standby
mode.
The power supply is experiencing a
warning condition, but is still
operating. Here are possible causes:
- The power supply is overheating.
- The speed of it's fan is too low.
- Its output current is too high.
- The input voltage from the AC
power source is too low.
The power supply shut down because
one of these fault conditions occurred:
- The power supply overheated.
- Its fan stopped or was too slow.
- Its output current to the switch was
too high.
- The input voltage from the AC
power source was too low.