Installation guide

136 Brocade FastIron SX Series Chassis Hardware Installation Guide
53-1002500-01
Installing or replacing a power supply
6
5. Re-attach the transparent cover that was removed in step 1.
6. Connect the wire to your DC power source making sure to connect the positive and negative
supply wires to the correct location as marked on the power supply.
7. Observe the LEDs on the power supply front panel. The DC IN and DC OUT LEDs should be
green (steady), which indicates the power supply is providing power to the chassis
components. If it is amber or OFF, the power supply is not providing power to the chassis
components. The ALM LED should be OFF.
Verifying proper operation
To verify the proper operation of the power supply after power on, you can observe the LEDs on the
power supply. Table 27 outlines the LEDs, the desired state of each LED, possible abnormal states
of each LED, and what to do if an LED indicates an abnormal state.
TABLE 27 Desired and abnormal power supply LED states after system power on
LED Desired State Desired State Meaning Abnormal State Abnormal State Meaning or
Action
AC OK
(AC
supply
only)
ON – Green (steady) The power supply is
receiving AC power from
an AC power source
OFF The power supply is not
receiving power from an AC
power source. You can do the
following:
• Make sure that the power
supply cord is connected
securely to the wall outlet
and the power supply.
• Make sure that the wall
outlet is rated for 115 or
120V and 20A. If it is not,
obtain a cable that is
compatibly rated for the
outlet.
• Make sure that the wall
outlet has power.
DC IN (DC
supply
only)
Green (steady) The power supply is
receiving DC power from a
DC power source
OFF The power supply is not
receiving power from a DC
power source. You can do the
following:
• Make sure that the power
supply cables are
connected securely to the
power source and the
power supply.
• Make sure that the DC
power source is 48VDC @
37.0 A.
• Make sure that the power
source has power.