Isolating a PCI bus problem from the HMC

If you have locations for the FRUs given in the serviceable event view of the error log, use those locations and exchange:

1. Did the serviceable event view provide the location(s) for the failing FRU(s)?
   • Yes: Use those locations to exchange the given FRUs one at a time until the problem is resolved. This ends the procedure.
   • No: Continue with the next step.
2. Go to DSA translation to determine the Direct Select Address (DSA).
3. Perform the following:
   1. Record the bus number value (BBBB) from the DSA and convert it to decimal format.
   2. Search for the decimal system bus number in the partition resources screens on the HMC.
   3. Record the frame or unit type and continue with the next step.
4. Record the Cc value from the DSA. Is the Cc value greater than 00?
   • Yes: Continue with the next step.
   • No: The multi-adapter bridge number and the multi-adapter function number have not been identified, and so the card slot cannot be identified using the DSA. Look in the HMC partition resources for non-reporting or non-operational hardware. That will indicate which cards in which positions need to be replaced. Refer to Finding part locations for the model you are working on for information about the multi-adapter bridge that controls those card slots. That multi-adapter bridge is also a FRU. This ends the procedure.
5. Is the right-most character (c) F?
   • No: Continue with the next step.
   • Yes: Only the multi-adapter bridge number has been identified. Record the multi-adapter bridge number (left-most character of Cc) for later use. Since the card slot cannot be identified with the DSA, refer to Finding part locations for the model you are working on for information about the multi-adapter bridge that controls the card slots. Consider all card slots controlled by the multi-adapter bridge to be FRUs. This ends the procedure.
6. Refer to Card positions and use the BBBB and Cc values that you recorded to identify the card position. Then return to the procedure that sent you here. This ends the procedure.