Display Power Supply Status

The checkpower command performs a simple pass-fail test on the power supplies.

1. On the management controller, type:

   # checkpower
   PSU 0 present status: OK
   PSU 1 present status: Alert
   #

2. If you see the words Alert or Not Present in the command output, perform the following steps for the affected power supply.

   1. Remove the power cord from the affected power supply.

      See Power Off a Power Supply.

   2. Remove the affected power supply from the switch chassis.

      See Remove a Power Supply.

   3. Wait one minute.

   4. Reinstall the power supply.

      See Install a Power Supply.

   5. Re-attach the power cord.

      See Power On a Power Supply.

   6. If the power supply’s Attention LED lights or the checkpower command still reports Alert or Not Present for the power supply, replace the power supply.

      See Servicing the Power Supplies.

Related Information

• Switch Reference, checkpower command

• Check Board-Level Voltages

• Display Switch Environmental and Operational Data