Chapter 3: System Interface
3-3
Power: Indicates power is being supplied to the system power supply units. This
LED should normally be illuminated when the system is operating.
HDD: Indicates activity on the hard drives when fl ashing.
NIC1: Indicates network activity on GLAN1 when fl ashing.
Overheating
There are several possible responses if the system overheats.
Overheat Temperature Setting
Some backplanes allow the overheat temperature to be set at 45°, 50°, or 55° C by
changing a jumper setting. For more information, consult the backplane user manual
at www.supermicro.com. (Click Support, then the Manuals link.)
Responses
If the server overheats:
1. Use the LEDs to determine the nature of the overheating condition.
2. Confi rm that the chassis covers are installed properly.
3. Check the routing of the cables and make sure all fans are present and
operating normally.
4. Verify that the heatsinks are installed properly.
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