Chapter 3 Troubleshooting; Troubleshooting Procedures - Supermicro X11DDW-L/NT User Manual

Super X11DDW-L/NT User's Manual

3.1 Troubleshooting Procedures

Use the following procedures to troubleshoot your system. If you have followed all of the
procedures below and still need assistance, refer to the 'Technical Support Procedures' and/
or 'Returning Merchandise for Service' section(s) in this chapter. Always disconnect the AC
power cord before adding, changing, or installing any non hot-swap hardware components.
Before Power On
1. Check that the power LED on the motherboard is on.
2. Make sure that the power connector is connected to your power supply.
3. Make sure that no short circuits exist between the motherboard and chassis.
4. Disconnect all cables from the motherboard, including those for the keyboard and
mouse.
5. Remove all add-on cards.
6. Install a CPU, a heatsink*, and connect the internal speaker and the power LED to the
motherboard. Check all jumper settings as well. (Make sure that the heatsink is fully
seated.)
7. Use the correct type of onboard CMOS battery (CR2032) as recommended by the
manufacturer. To avoid possible explosion, do not install the CMOS battery upside down.
No Power
1. Make sure that no short circuits exist between the motherboard and the chassis.
2. Verify that all jumpers are set to their default positions.
3. Check that the 115V/230V switch on the power supply is properly set.
4. Turn the power switch on and off to test the system.
5. If the battery on your motherboard is old, please check to verify that it still supplies
~3VDC. If it does not, replace it with a new one.
Chapter 3
Troubleshooting
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