5-25
Chapter 5: Chassis Setup and Maintenance
Depending on your chassis model, the SC745 chassis has an 800, 920, 1200 or
1280 Watt power supply. "R" model chassis feature a second redundant power sup-
ply. This power supply is auto-switching capable. This enables it to automatically
sense and operate at a 100v to 240v input voltage. An amber light will be illuminated
on the power supply when the power is off. An illuminated green light indicates that
the power supply is operating.
Power Supply Failure
In redundant power supply models, the system automatically switches to the second
power supply when the first fails. If your system has only one power supply, the
system shuts down in the unlikely event of a power failure.
5-9 Power Supply
Replacing the Power Supply
1. Power down the server and unplug the power cord. If your chassis includes a
redundant power supply (two power modules), you can leave the server run-
ning and remove only one power supply.
2. Push the release tab on the back of the power supply.
3. Pull the power supply out using the handle provided.
4. Replace the failed power module with the same model.
5. Push the new power supply module into the power bay until it clicks into the
locked position.
6. Plug the AC power cord back into the module and power up the server.
