The problem is in a PCI differential ultra SCSI controller.
The controller might be integrated on a backplane or on a PCI adapter. For the failing FRU part number, see the following table.
CCIN or FFC | Type and model | Part number | Description | Location code |
2E6 | 8203-E4A, 8261-E4S, 9407-M15, 9408-M25 | See System parts. | System backplane | Un-P1 |
2E6 | 8204-E8A, 9409-M50 | 10N9369 | System backplane | Un-P1 |
2E6 | 9117-MMA | 42R7352 | I/O backplane | Un-P1 |
2E6 | 9117-MMA | See Managing PCI adapters for FRU part numbers | SCSI PCI adapter | Un-P1-Cx |
2E6 | 7311-D11 | 80P6626 | I/O drawer backplane | Un-P1 |
2E6 | 7311-D20 | See System parts. | I/O drawer backplane | Un-P1 |