Allied Telesis x900 Series Switch and SwitchBlade x908 - Manual (Page 15)

x900 Series Switch and SwitchBlade ® x908
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8. Ensure that the circuit breaker is off for the supply circuit and the Run/
Standby switch on the PSU. Release the Run/Standby switch so that it is not
pushed in (which is the Off position).
9. Connect the supply cable wires to the circuit breaker.
10. Turn on the PSU by pushing in the Run/Standby switch.
11. Confirm that the switch is receiving power.
Check that at least one of the PSU LEDs on the front panel of the switch is
lit green. If no LEDs light, refer to the Hardware Reference for
troubleshooting information.