IBM 6151 Maintenance And Service Manual page 225

Step 7
One of the FRUs that correspond to the SRAs in the SRN should
fix the problem.
4. Write the Service Request Number here:
13-
- - -
AJZB179
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.
(6/88) Problem Isolation Charts
3-0090-7