The system is stopped on one of the base system integrated controller checkpoints.
If the system hangs on one of the base system integrated controller checkpoints, do the following:
If the system continues to hang on a base system controller checkpoint, replace the backplane in the system unit that contains integrated I/O controllers. Use the following table to determine the part number for the field replaceable unit (FRU):
| CCIN or FFC | Type and model | Part number | Description | Location code |
| 9406-MMA, 9117-MMA | 42R7352 | I/O backplane | Un-P1 |