IBM RS/6000 7025 F50 Series

3. Normally exchange only one FRU at a time, starting from the top of the FRU list
for that SRN. Always use instructions given in the page reference when
exchanging FRUs. After each FRU is exchanged, go to "MAP 410: Repair
Checkout" in IBM RS/6000 Diagnostic Information for Multiple Bus Systems to
verify the repair.
A-4 Service Guide