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Figure 36. Removing a power supply assembly
1. Power Supply Assembly Unit
2. Power Supply Assembly Handle
2. Unplug the power cord from the power supply that is being replaced.
3. Push the lever on the lower right corner of the power supply unit towards the IEC socket.
4. Remove the power supply assembly from the chassis by pulling the handle out and away from the
chassis.
Inserting a new power supply assembly
The new power supply assembly must have the same part number and airflow label (or lack thereof) as
the power supply assembly already installed.
Complete the following steps to insert a new power supply assembly into the chassis.
CAUTION: The power supply switch must be in the off position when you insert the power supply
into the chassis. Damage to the switch can result if a live power supply is installed.
1. To leave the device in service while installing a power supply assembly, verify that the other power
supply assembly (the one already installed) has been powered on for at least four seconds and has a
steady green LED.
2. Orient the new power supply assembly unit and slide push in until the latch on the right side is
secured. Pull on the handle to check and ensure that it is fully seated.
Do not force the installation. If the power supply assembly does not slide in easily, ensure that it is
correctly oriented before continuing.
CAUTION: Carefully follow the mechanical guides on each side of the power supply slot and
make sure the power supply is properly inserted in the guides. Never insert the power supply
upside down.
Chapter 7. Power Supply Assemblies 59
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