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Chapter 3: Maintenance and Component Installation
Power Supply
The system has a redundant power supply consisting of two power modules. Each power
supply module has an auto-switching capability, which enables it to automatically sense and
operate at a 100 V – 240 V input voltage.
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 PWR Fail LED will illuminate
and remain on until the failed unit has been replaced. The hot-swap capability of the power
supply modules allows you to replace the failed module without powering down the system.
Replacement units can be ordered directly from Supermicro (see contact information in the
Preface).
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.
