Memory problems
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 4, “Parts listing, System x3100 M4 Type 2582,” on page 151 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.
Symptom Action
The amount of system memory
that is displayed is less than the
amount of installed physical
memory.
1. Make sure that:
v No error LEDs are lit on the control-panel assembly or on the system board.
v The memory modules are seated correctly.
v You have installed the correct type of memory.
v All DIMMs are enabled. The server might have automatically disabled a
DIMM when it detected a problem.
2. Check the POST error log for error message 289:
v If a DIMM was disabled by a system-management interrupt (SMI), replace
the DIMM.
3. Run memory diagnostics (see “Running the diagnostic programs” on page 94).
4. Make sure that there is no memory mismatch when the server is over the
minimum memory configuration (one 1 GB DIMM) and that you have installed
the correct number of DIMMs.
5. Reseat the DIMMs.
6. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. DIMMs
b. (Trained service technician only) System board
Multiple rows of DIMMs in a
branch are identified as failing.
1. Reseat the DIMMs; then, restart the server.
2. Replace the lowest-numbered DIMM pair of those that are identified; then,
restart the server. Repeat as necessary.
3. (Trained service technician only) Replace the system board.
Microprocessor problems
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 4, “Parts listing, System x3100 M4 Type 2582,” on page 151 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.
Symptom Action
A microprocessor LED is lit
during POST, indicating that the
startup (boot) microprocessor is
not working correctly.
1. Make sure that the server supports the microprocessor.
2. (Trained service technician only) Make sure that the microprocessor is seated
correctly.
3. (Trained service technician only) Reseat the Microprocessor.
4. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. (Trained service technician only) Microprocessor
b. (Trained service technician only) System board
86 IBM System x3100 M4 Type 2582: Problem Determination and Service Guide
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