Memory error symptomsNote: See “System” on page 108 to determine which components should be replaced by a field service technician.Symptom FRU/actionThe amount of system memorydisplayed is less than theamount of physical memoryinstalled.1. Verify that:v Memory mirroring is not enabled.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 theConfiguration/Setup Utility program.v All banks of memory on the DIMMs are enabled. The server might haveautomatically disabled a DIMM bank when it detected a problem or a DIMMbank 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), replacethe 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 server.3. DIMM.4. System board.Microprocessor error symptomsNote: See “System” on page 108 to determine which components should be replaced by a field service technician.Symptom FRU/actionThe server emits a continuoustone during POST. (The startup(boot) microprocessor is notworking properly.)1. Verify that the startup microprocessor is seated properly.2. Startup microprocessor.Monitor error symptomsNote: See “System” on page 108 to determine which components should be replaced by a field service technician.Symptom FRU/actionMonitor problems (general). Some IBM monitors have their own self-tests. If you suspect a problem with themonitor, refer to the information that comes with the monitor for adjusting andtesting instructions.1. Monitor.2. Run video diagnostics. If diagnostics pass, the problem may be a video driver.3. Display adapter / system board.94 xSeries 346 Types 8840 and 1880: Hardware Maintenance Manual and Troubleshooting Guide
