Time And Items Required; Replacing A Power Supply - Brocade Communications Systems 7840 Extension Switch Hardware Reference Manual

Time and items required

Replacing a power supply in the Brocade 7840 switch should require less than two minutes to complete.
To replace a power supply in a Brocade 7840, you need a new power supply that has the same part
number and airflow indicator as the power supply being replaced.

Replacing a power supply

Complete the following steps to replace a power supply in a Brocade 7840 switch.
1. To leave the Brocade 7840 in service while replacing a power supply, verify that the other power
supply (the one not being replaced) has been powered on for at least four seconds and has a steady
green status LED.
2. Unplug the power cord from the power supply that is being replaced.
3. Push the locking tab to the left and hold it there while using the handle on the power supply to pull it
straight out and away from the chassis. Pull the power supply out slowly to avoid catching a finger on
the locking tab.
4. Slide the new power supply into the chassis until the locking tab engages.
NOTE
Do not force the installation. If the power supply does not slide in easily, ensure that the power
supply is correctly oriented before continuing.
NOTE
If you observe that the switch has powered down after two minutes after a power supply
replacement, it is likely because the new power supply has a mismatched airflow.
5. Plug the power cord into the power supply to power on the unit.
If the power circuit was on before the replacement, the power supply will immediately attempt to
power up.
Brocade 7840 Extension Switch Hardware Reference Manual
53-1003127-02
Time and items required
43