Solving Undetermined Problems - IBM System x3650 M5 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.
About this task
If you suspect that a software problem is causing failures (continuous or
intermittent), see "Software problems" on page 110.
Corrupted data in CMOS memory or corrupted UEFI firmware can cause
undetermined problems. To reset the CMOS data, use the CMOS clear jumper (J11)
to clear the CMOS memory and override the power-on password; see Table 1 on
page 31 for more information. If you suspect that the UEFI firmware is corrupted,
see "Recovering the server firmware (UEFI update failure)" on page 117.
If the power supplies are working correctly, complete the following steps:
Procedure
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.
Results
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.
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 4 GB DIMM
in DIMM slot 1.
Chapter 3. Troubleshooting
115