v Power cord
v Microprocessor board
v One microprocessor
v Two 1 GB DIMMs on one memory card (If a memory expansion module is
connected to the server, two 2 GB DIMMs on the memory expansion
module.)
4. Turn on the server. If the problem remains, suspect the following components
in the following order:
a. Memory card
b. Microprocessor board
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 I/O
board.
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
This topic provides 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. If
possible, have this information available when you request assistance from IBM.
v Machine type and model
v Microprocessor and hard disk drive upgrades
v Failure symptoms
– Does the server fail the Dynamic System Analysis 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?
v Diagnostic program type and version level
v Hardware configuration (print screen of the system summary)
v FPGA firmware level
v UEFI firmware level
v Operating-system type and version level
You can solve some problems by comparing the configuration and software setups
between working and nonworking servers. When you compare servers to each
other for diagnostic purposes, consider them identical only if all the following
factors are exactly the same in all the servers:
v Machine type and model
v FPGA firmware level
v UEFI firmware level
v Adapters and attachments, in the same locations
v Address jumpers, terminators, and cabling
78 IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Problem Determination and Service Guide
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