Allied-telesis Removable Power Supply and Fan Manuel d'utilisateur télécharger pdf (Page 21)

Removable Power Supply and Fan

Switch The following table describes how LEDs on the switch report operations and

faults with installed PSUs and FOMs.

LED State Description

PSU 1

and

PSU 2

Green The PSU is installed and supplying power to the switch.

The voltage output is within specification.

Red One of the following:

• The PSU is installed in the switch, and a fan has

failed or the PSU has exceeded its recommended

temperature threshold of 70ºC (158º F).

• A FOM is installed in the switch and a fan has failed.

Note that the x900-12XT/S and SwitchBlade x908

switches do not support FOMs.

• The bay is empty. Applies to AT-8948, AT-9924Ts,

x900-24XT, x900-24XT-N, and x900-24XS

switches which require a FOM when only one PSU

is installed.

• Dual PSUs are installed, but the PSU is not

receiving power.

Off One of the following:

• A FOM is installed and operating at an acceptable

speed. Applies to AT-9924T, x900-48FE, and

x900-48FS.

• On SwitchBlade x908 switches there is no power

supply in this bay.

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Allied-telesis Removable Power Supply and Fan Manuel d'utilisateur Page 21