Microprocessor problems

Use this information to solve microprocessor problems.

  • Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
  • See Parts listing, IBM System x3550 M3 Type 4254 and 7944 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
  • If an action step is preceded by "(Trained service technician only)," that step must be performed only by a Trained service technician.
  • Go to the IBM support website at IBM Support Portal to check for technical information, hints, tips, and new device drivers or to submit a request for information.
Symptom Action
The server goes directly to the POST Event Viewer when it is turned on.
  1. Correct any errors that are indicated by the light path diagnostics LEDs (see Light path diagnostics).
  2. Make sure that the server supports all the microprocessors and that the microprocessors match in speed and cache size. To view the microprocessor information, run the Setup utility and select System Information > System Summary > Processor Details.
  3. (Trained service technician only) Make sure that microprocessor 1 is seated correctly.
  4. (Trained service technician only) Remove microprocessor 2 and restart the server.
  5. Replace the following components one at a time, in the order shown, restarting the server each time:
    1. (Trained service technician only) Microprocessor
    2. (Trained service technician only) System board