IBM System x3950, Problem Determination And Service Manual

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing, Type 8878 and 8879,” on page 109 to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Beep code Description Action
3-3-2 Critical SMBUS error occurred.
1. Disconnect power cord, wait 30 seconds,
and retry.
2. Reseat the following components:
a. DIMM
b. Memory card
c. Microprocessor tray
d. I/O board
3. Replace the following components one at a
time, in the order shown, restarting the
server each time.
a. DIMM
b. Memory card
c. (Trained service technician only)
Microprocessor tray
d. I/O board
3-3-3 No operational memory in system. Note: Make sure you re-enable the memory in
the Configuration/Setup Utility program. See,
“Memory problems” on page 42
1. Make sure that all memory cards contain
the correct number of DIMMs; install or
reseat DIMMS; then, restart the server.
2. Reseat the following components:
a. DIMM
b. Memory card
c. Microprocessor tray
3. Replace the following components one at a
time, in the order shown, restarting the
server each time.
a. DIMM
b. Memory card
c. (Trained service technician only)
Microprocessor tray
Two short beeps Information only, configuration has
changed.
1. Run the Configuration/Setup Utility program.
2. Run the diagnostic programs.
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IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide