Problem Determination Tips - Lenovo System x3550 M4 Installation And Service Manual

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, suspect the riser card.
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

Because of the variety of hardware and software combinations that can encounter, use the following
information to assist you in problem determination. If possible, have this information available when
requesting assistance from Lenovo.
The model name and serial number 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.
Figure 92. ID label
• Machine type and model
• Microprocessor or hard disk drive upgrades
• Failure symptom
– Does the server fail the diagnostic tests?
– What occurs? When? Where?
– Does the failure occur on a single server or on multiple servers?
– Is the failure repeatable?
– Has this configuration ever worked?
– What changes, if any, were made before the configuration failed?
– Is this the original reported failure?
• Diagnostic program type and version level
• Hardware configuration (print screen of the system summary)
• UEFI firmware level
• IMM firmware level
• Operating system software
.
Chapter 4 Troubleshooting
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