Leds; Table 9: Leds On The Pwr600 Power Supply - Allied Telesis x950 Series Installation Manual

Chapter 1: Overview

LEDs

36
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 do not have to
power off the operational power supply to replace the failed unit.
The two LEDs on the front panel of the power supply are described in
Table 9.
Table 9. LEDs on the 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. Possible causes are listed
here:
- The power supply is overheating.
- The speed of its 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
it experienced a fault condition.
Possible causes are listed here:
- The power supply overheated.
- The power supply's fan stopped or
was too slow.
- The output current from the power
supply to the switch was too high.
- The input voltage from the AC
power source was too low.