IBM IntelliStation Z Pro Type 6221 Hardware Maintenance Manual page 102

Memory problems
Symptom
The amount of system memory
displayed is less than the
amount of physical memory
installed.
Microprocessor problems
Symptom
The computer emits a
continuous tone during POST.
(The startup (boot)
microprocessor is not working
properly.)
Monitor problems
Symptom
Testing the monitor.
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IBM IntelliStation Z Pro Type 6221: Hardware Maintenance Manual
FRU/action
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.
FRU/action
1. Verify that the startup microprocessor is seated properly.
2. Startup microprocessor.
FRU/action
v See the information that comes with the monitor for adjusting and testing
instructions. (Some IBM monitors have their own self-tests.)