This is a primary PCI bus generated under a RIO/HSL/12X adapter I/O bridge.

This bus can be in a system unit or I/O unit, and on some units this bus connects two FRUs.

1. Are you working from the serviceable event view and a card location is listed with this failing item?
   • No: Record the bus number value, BBBB, in word 7 of the reference code. Word 7 of the reference code allows you to determine the correct bus number, bus type, multi-adapter bridge number, multi-adapter bridge function number, and logical card number from the Direct Select Address (DSA), see DSA translation, or see DSA translation in the service guide for the system unit for more information. Continue with the next step.
   • Yes: The listed card location is where the error is located. Continue with the next step.

2. Use the following table to determine the appropriate action:

   Symbolic FRU to perform for PRI_PCI

   Type and model of unit containing the failing item	Action
   9406-MMA, 9117-MMA	Perform SYSBKPL.
   5790, 7311-D11	There are two potential failing items. Perform SIADPCD. If the problem persists after powering on the frame or unit, then perform TWRPLNR. Attention: To prevent system VPD problems, do not replace both FRUs at the same time.
   0595, 5095, 7311-D20	There are two potential failing items. Perform SIADPCD. If the problem persists after powering on the frame or unit, then perform TWRPLNR. Attention: To prevent system VPD problems, do not replace both FRUs at the same time.
   5796, 7314-G30	There are two potential failing items. Perform SIADPCD. If the problem persists after powering on the frame or unit, then perform TWRPLNR. Attention: To prevent system VPD problems, do not replace both FRUs at the same time.

This ends the procedure.