Allied-telesis Removable Power Supply and Fan Manuel d'utilisateur télécharger pdf (Page 15)

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.

The x900-12XT/S and the SwitchBlade x908

switches do not support FOMs.

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

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

AT-10408XP switches which require a FOM when

only one PSU is installed.

• Dual PSUs are installed, but the PSU is not

receiving power.

Off A FOM is installed and operating at an acceptable

speed. For AT-9924T, x900-48FE, x900-48FE-N, x900-

48FS, and SwitchBlade x908 switches, a blanking plate

is installed.

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Allied-telesis Removable Power Supply and Fan Manuel d'utilisateur Page 15