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5-6
Power Supply
The SSG-937R-E2CJB has a 1200 watt redundant power supply consisting of two
separate power modules. Each power supply module has an auto-switching capabil-
ity, which enables it to automatically sense and operate at a 100-240V input voltage.
When fully inserted into the chassis, the power supplies connect automatically to a
power distribution board (PDB). The PDB in turn connects to the midplane via two
power connections, as shown in Figure 5-7.
Power Supply Failure
If either of the two power supply modules fail, the other module will take the full load
and allow the system to continue operation without interruption. The Power Fail LED
will illuminate and remain on until the failed unit has been replaced.
Replacement units can be ordered directly from Supermicro. The power supply
units have a hot-swap capability, meaning you can replace the failed unit without
powering down the system.
Replacing the Power Supply
You do not need to shut down the system to replace a power supply unit. The backup
power supply module will keep the system up and running while you replace the
failed hot-swap unit.
Replacing the Power Supply
1. The SC937 chassis includes a redundant power supply (two power modules).
The system may remain running if only one power supply is removed at a
time.
2. Unplug the AC power cord from the power supply to be replaced.
3. Push the release tab on the back of the power supply as illustrated.
4. Pull the power supply out using the handle provided.
5. Replace the failed power module with the same model.
6. Push the new power supply module into the power bay until you hear a click.
7. Plug the AC power cord back into the module.
Chapter 5: Advanced Chassis Setup
5-9
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