IBM 8671 - Eserver xSeries 235, Maintenance And Troubleshooting Manual

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Note: See “System” on page 162 to determine which components should be replaced by a field service technician.
Memory problems
Symptom FRU/action
The amount of system memory
displayed is less than the
amount of physical memory
installed.
1. Verify that:
v
The memory modules are seated properly.
v You have installed the correct type of memory.
v
If you changed the memory, you updated the memory configuration with the
Configuration/Setup Utility program.
v
All banks of memory on the DIMMs are enabled. The computer might have
automatically disabled a DIMM bank when it detected a problem or a DIMM
bank could have been manually disabled.
2. Check POST error log for error message 289:
v If the DIMM was disabled by a system-management interrupt (SMI), replace
the DIMM.
v
If the DIMM was disabled by the user or by POST:
a. Start the Configuration/Setup Utility program.
b. Enable the DIMM.
c. Save the configuration and restart the computer.
3. DIMM.
4. System board.
Note: See “System” on page 162 to determine which components should be replaced by a field service technician.
Microprocessor problems
Symptom FRU/action
The computer emits a
continuous tone during POST.
(The startup (boot)
microprocessor is not working
properly.)
1. Verify that the startup microprocessor is seated properly.
2. Startup microprocessor.
Note: See “System” on page 162 to determine which components should be replaced by a field service technician.
Monitor problems
Symptom FRU/action
Testing the monitor.
v See the information that comes with the monitor for adjusting and testing
instructions. (Some IBM monitors have their own self-tests.)
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xSeries 235 Type 8671: Hardware Maintenance Manual and Troubleshooting Guide