Lenovo 7D8J, Setup Manual, Page: 115 / 122

4. Remove the DIMMs until the system reaches minimal memory requirement; then, add one DIMM and
reboot the server, and repeat the step if the problem does not recur. If the problem occurs after addition
of a DIMM, replace it.
See “Specifications” on page 3 for the minimal configuration for debugging.
A Lenovo optional device that was just installed does not work.
Complete the following steps until the problem is solved.
1. Check the system event log and resolve any related problems. To view the system event log, go to
Setup Utility
and select
Security
➙
System Event Log
➙
View System Event Log
.
2. Make sure that:
• The device is supported by the server (see
https://static.lenovo.com/us/en/serverproven/index.shtml
).
• The latest version of corresponding driver is installed.
• The device is seated correctly without physical damage on the device or connector.
• System firmware has been updated to the latest version.
• You followed the installation instructions that came with the device, and the device is installed
properly.
• You have not loosened any other installed devices or cables.
3. Reseat the device.
4. Replace the device.
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 3 for details.
2. Restart the server.
• If the system does restart successfully, add the devices that are removed one at a time, and restart
the server after each addition until the problem occurs. Replace the device that causes the problem.
• If the system fails to restart, there might be a problem with the system board. Call Lenovo support.
Chapter 5
.
Resolving installation issues
111