Use this procedure to exchange the FRUs in the order of their failure probability.
Did the problem report provide a part number for the FRU you are about to replace?
Find the failing function codes in the DUMMY PAGE FOR Part information, and record the FRU part number and description of each FRU.
Obtain the replacement part.
Go to Locating FRUs, and follow the procedures for the FRU you are servicing.