Solving Undetermined Problems; Problem Determination Tips - Lenovo System x3850 X6 Installation And Service Manual

• Check for operating-system-specific causes of the problem, and also make sure that the operating
system drivers are installed correctly.
• Make sure that the device drivers on the client and server are using the same protocol.
If the Ethernet controller still cannot connect to the network but the hardware appears to be working, the
network administrator must investigate other possible causes of the error.

Solving undetermined problems

Use this information to solve undetermined problems.
If Dynamic System Analysis (DSA) did not diagnose the failure or if the server is inoperative, use the
information in this section.
If you suspect that a software problem is causing failures (continuous or intermittent), see "Software
problems" on page 193.
Corrupted UEFI firmware can cause undetermined problems, if you suspect that the UEFI firmware is
corrupted, see "Recovering from a UEFI update failure or UEFI image corruption" on page 197.
If the power supplies are working correctly, complete the following steps:
Step 1. Turn off the server.
Step 2. Make sure that the server is cabled correctly.
Step 3. Remove or disconnect the following devices, one at a time, until you find the failure. Turn on the
server and reconfigure it each time.
• Any external devices.
• Surge-suppressor device (on the server).
• Printer, mouse, and non-Lenovo devices.
• Each adapter.
• Hard disk drives.
• Memory modules. The minimum configuration requirement is one DIMM in each compute book.
Step 4. Turn on the server.
If the problem is solved when you remove an adapter from the server but the problem recurs when you
reinstall the same adapter, suspect the adapter; if the problem recurs when you replace the adapter with a
different one, try a different PCIe slots.
If you suspect a networking problem and the server passes all the system tests, suspect a network cabling
problem that is external to the server.

Problem determination tips

This topic provides problem determination tips to help you solve server problems.
Because of the variety of hardware and software combinations that you can encounter, use the following
information to assist you in problem determination.
The model number and machine type are located on the ID label on the front of the server as shown in the
following illustration.
Note: The illustrations in this document might differ slightly from your hardware.
.
Chapter 4 Troubleshooting
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