Symptom-to-FRU Index Supplement (Type 8639)

Symptom-to-FRU Index Supplement (Type 8639)

The Symptom-to-FRU Index lists error symptoms and possible causes. The most likely cause is listed first.

Always begin with 'General Checkout (Type 8639, Model OXT)'. This index can also be used to help you decide which FRUs to have available when servicing a computer. If you are unable to correct the problem using this index, go to 'Undetermined Problem'.


  1.  Some errors are indicated with a series of beep codes.  (See 'Beep Symptoms'.)
  2.  The processor is a separate FRU from the system  board, the processor is not included with the system board FRU.  See 'System Board Replacement (Type 8639)'

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