Solving Undetermined Problems; Problem Determination Tips - IBM System x3750 M4 Type 8722 Installation And Service Manual

Solving 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 186.
Corrupted data in CMOS memory or corrupted UEFI firmware can cause
undetermined problems. To reset the CMOS data, use the CMOS jumper to clear
the CMOS memory and override the power-on password; see Table 3 on page 29. If
you suspect that the UEFI firmware is corrupted, see "Recovering the server
firmware (UEFI update failure)" on page 191.
If the power supplies are working correctly, complete the following steps:
1. Turn off the server.
2. Make sure that the server is cabled correctly.
3. Remove or disconnect the following devices, one at a time, until you find the
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

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 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.
failure. Turn on the server and reconfigure it each time.
v Any external devices.
v Surge-suppressor device (on the server).
v Printer, mouse, and non-IBM devices.
v Each adapter.
v Hard disk drives.
v Memory modules. The minimum configuration requirement is one 4GB
DIMM in slot 1.
Chapter 4. Troubleshooting
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