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a. If you are unable to get a response during a ping test, attempt to ping another compute node in
the enclosure to determine whether it is a connection problem or compute node problem.
b. Run a trace route to determine where the connection breaks down. Attempt to resolve a
connection issue with either the VPN or the point at which the connection breaks down.
4. Restart the compute node remotely through the management interface.
5. If the problem remains, verify that any new software has been installed and configured correctly.
6. Contact your place of purchase of the software or your software provider.
Voltage planar fault is displayed in the event log
Complete the following steps until the problem is solved.
1. Revert the system to the minimum configuration. See "Specifications" on page 2 for the minimally
required number of processors and DIMMs.
2. Restart the system.
• If the system restarts, add each of the items that you removed one at a time, restarting the system
each time, until the error occurs. Replace the item for which the error occurs.
• If the system does not restart, suspect the system board.
Unusual smell
Complete the following steps until the problem is solved.
1. An unusual smell might be coming from newly installed equipment.
2. If the problem remains, contact Lenovo Support.
Compute node seems to be running hot
Complete the following steps until the problem is solved.
Multiple compute nodes or chassis:
1. Make sure that the room temperature is within the specified range (see "Specifications" on page 2).
2. Check the management processor event log for rising temperature events. If there are no events, the
compute node is running within normal operating temperatures. Note that you can expect some
variation in temperature.
Cracked parts or cracked chassis
Contact Lenovo Support.
Optional-device problems
Use this information to solve problems related to optional devices.
• "External USB device not recognized." on page 111
• "PCIe adapter is not recognized or is not functioning." on page 112
• "Insufficient PCIe resources are detected." on page 112
• "A Lenovo optional device that was just installed does not work." on page 112
• "A Lenovo optional device that worked previously does not work now." on page 112
External USB device not recognized.
Complete the following steps until the problem is resolved:
.
Chapter 4
Problem determination
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