Table 2-3 Error Symptoms List
NOTE: To diagnose a problem, first find the error symptom in the left column. If directed to a check procedure, replace the FRU indicated in the check procedure. If no check procedure is indicated, the first Action/ FRU listed in right column is the most likely cause.
Error Symptoms | Action/FRU |
|
|
Processor / Processor Fan
NOTE: Normally, the processor fan should be operative, and the processor clock setting should be exactly set to match its speed requirement before diagnosing any processor problems.
Processor fan does not run | Ensure that the system is |
but power supply fan runs. | not in power saving mode |
| and the “Stop CPU clock in |
| sleep state” is not set to |
| Yes. See “Power |
| Management” on page 5. |
| With the system power on, |
| measure the voltage of |
| processor fan connector |
| FN1. Its reading should be |
| +12Vdc. See “System |
| Board Jumpers and |
| Connectors” on page 105. |
| Processor fan. |
| System board. |
|
|
Processor test failed. | Processor. |
| System board. |
|
|
System Board and Memory
NOTE: Ensure that the memory modules are installed properly and the contact leads are clean before diagnosing any system problems.
Memory test failed. | See “Memory” on page 64. |
| System board |
|
|
Incorrect memory size | Insert the memory modules |
shown or repeated during | in the DIMM sockets |
POST. | properly, then reboot the |
| system. |
| Memory module. See the |
| “Step 005” of “Memory” on |
| page 64 to replace memory |
| module. |
| System board. |
|
|
48 IBM Desktop System HMM
