IBM 6151 Maintenance And Service Manual page 212

Step 6
One of the FRUs that correspond to the SRAs in the SRN should
fix the problem.
4. Write the Service Request Number here:
13 - _ _
A,JZBI79
HAVE YOU EXCHANGED ALL OF THE FRUs THAT
CORRESPOND TO THE SRAs IN EACH SRN?
YES Contact your service support person.
NO Continue on the next page.
3-0080-6 Service Manual