Solving Undetermined Problems; Problem Determination Tips - IBM System x3250 4364 Problem Determination And Service Manual

Solving undetermined problems

If the diagnostic tests 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 91.
Damaged data in CMOS memory or damaged BIOS code can cause undetermined
problems. To reset the CMOS data, use the clear-CMOS jumper to clear the CMOS
memory and override the power-on password; see "System-board switches and
jumpers" on page 7. If you suspect that the BIOS code is damaged, see
"Recovering from BIOS update failure" on page 103.
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 remains, suspect the following components in
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

Due to the variety of hardware and software combinations that can be encountered,
use the following information to assist you in problem determination. If possible,
have this information available when requesting assistance from Service Support
and Engineering functions.
v Machine type and model
v Microprocessor or hard disk upgrades
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IBM System x3250 Types 4364, 4365, and 4366: Problem Determination and Service Guide
failure. Turn on the server and reconfigure it each time.
v Any external devices.
v Surge-suppressor device (on the server).
v Modem, printer, mouse, and non-IBM devices.
v Each adapter.
v Hard disk drives.
v Memory modules. The minimum configuration requirement is 512 MB (one
512 MB DIMM in DIMM slot 1).
The following minimum configuration is required for the server to turn on:
v One microprocessor
v One 512 MB DIMM on the system board
v One power supply
v Power cord
v System board
the following order:
a. System board
b. Memory module
c. Microprocessor
d. PCI-X expansion card