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Removal
DANGER
Do not attempt to open the covers of the power supply. Power supplies are
not serviceable and are to be replaced as a unit.
D02
Note: If attempting a hot-swap of more than one power supply, be aware of the
1. Replace only one power supply at a time. Removing another power supply tells the
system that only one supply is installed, which indicates insufficient air flow for
system operation, causing it to shut down.
2. If the system has three power supplies and only one needs to be removed, you do
not need to power off the system. If two power supplies need to be removed, you
must power off the system.
3. After the first power supply has been replaced, wait until the RPM of the cooling
fans slows down before attempting to replace another of the three supplies. Failure
to do so will cause the system to shut down because the high RPM of the cooling
fans signifies that the system recognizes that one of the three supplies is missing.
To remove a power supply, perform the following steps:
Attention:
avoid overheating the system.
1. Remove the right side cover as described in "Removing the Covers" on page 311.
2. Grasp the handle of the power supply.
3. Pivot the handle downward.
4. With one hand supporting the power supply from the bottom, use the handle to pull
out the power supply.
Replacement
Replace in reverse order.
Installing the Redundant Power and Cooling Option
The redundant power and cooling option consists of two fans and an extra power
supply in addition to the base fans and power supplies that are already installed in your
system.
Installing a Redundant Fan
Use the following procedure to install redundant fans in your system:
1. If you have not already done so, shut down the system as described in "Stopping
the System Unit" on page 316.
2. If you have not already done so, unplug the system unit power cable from the
electrical outlet.
following:
When you remove a power supply, it must be replaced within 1.5 minutes
Chapter 9. Removal and Replacement Procedures
339
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