Memory problems
vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
vSee the Hardware Maintenance Manual to determine which components are customer replaceable units (CRUs) and which components are field replaceable units (FRUs).
vIf 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 | 1. | Make sure that: | |
that is displayed is less than the | |||
| v No error LEDs are lit on the | ||
amount of installed physical |
| ||
| v Memory mirroring does not account for the discrepancy. | ||
memory. |
| ||
|
| 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 event log for error message 289: | |
|
| v If a DIMM was disabled by a | |
|
| the DIMM. | |
| 3. | Run memory diagnostics. | |
| 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 | 1. | Reseat the DIMMs; then, restart the server. | |
branch are identified as failing. | |||
2. | Replace the failing DIMM. | ||
| |||
| 3. | (Trained service technician only) Replace the system board. | |
|
|
| |
Chapter 7. Troubleshooting 167
