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 2 GB DIMM in slot 1
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.
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ID label
Figure 32. 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?
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Lenovo System x3550 M5 Installation and Service Guide
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