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Chapter 3: Maintenance and Component Installation
Power Supply
The chassis features redundant power supplies. The system will continue to operate if one
module fails. It should be replaced as soon as is convenient. The power supply modules are
hot-swappable, meaning they can be changed without powering down the system. New units
can be ordered directly from Supermicro or authorized distributors.
These power supplies are capable of auto-switching. This feature enables them to automatically
sense the input voltage and operate at 100-120V or 180-240V.
Power Supply LEDs
On the rear of the power supply module, an LED displays the status.
•
Solid Green
: When illuminated, indicates that the power supply is on.
•
Solid Amber
: When illuminated, indicates the power supply is plugged in and turned off,
or the system is off but in an abnormal state.
•
Blinking Amber
: When blinking, this system power supply temperature has reached 63C.
The system will automatically power down when the power supply temperature reaches
70C and restart when the power supply temperature goes below 60C.
Changing the Power Supply Module:
1. Unplug the AC cord from the module to be replaced.
2. On the back of the module, push the release tab sideways, as illustrated.
3. Pull the module out using the handle.
4. Push the new power supply module into the power bay until it clicks. Replace with the
same model.
5. Plug the AC power cord back into the module.
Figure 3-24. Removing the Power Supply
Release Tab
