Installing A Hot-Swap Power Supply - IBM 3550 Type 7978 User Manual

4. To remove the air baffle near the center of the server, complete these steps:
Attention:
the server. Operating the server with the air baffle removed might damage server
components.

Installing a hot-swap power supply

The following notes describe the type of power supply that the server supports and
other information that you must consider when installing a power supply:
v The server comes with one 670-watt hot-swap 12-volt output power supply. The
v You can install an optional 670-watt hot-swap 12-volt output power supply to use
v These power supplies are designed for parallel operation. In the event of a
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IBM System x3550 Type 7978: User's Guide
Air baffle
Cable routing slot
a. Slide the baffle back from the front of the server to disengage the tab at the
front of the baffle from the bulkhead that runs the width of the server.
b. Lift the baffle up slightly, making sure that the pins come out of the holes on
the system board.
c. Slide the cables out of the cable routing slot. Make sure you do not
disconnect or loosen the cables.
d. Lift the baffle out completely.
For proper cooling and airflow, replace the air baffle before you turn on
input voltage is 110 V ac or 220 V ac auto-sensing.
as a redundant power supply.
power-supply failure, the redundant power supply continues to power the system.
The server supports a maximum of two power supplies.
Note: If you are using a Y power cable between two servers that act as backup
power units, see "Installing a Y power cable" on page 30 for information
about how to connect a Y power cable.
Baffle pins
Baffle mounting
holes