FI01107

Complete the following steps:

1. Find the IOP address. See the System reference code format description.
2. To determine the location of the I/O processor card, see Part locations and location codes.

   The unit reference code indicates the I/O (SCSI) bus that has the problem:

   • URC 3020, 3100 -- I/O bus 0
   • URC 3021, 3101 -- I/O bus 1
   • URC 3022, 3102 -- I/O bus 2
   • URC 3023, 3103 -- I/O bus 3
   • Any other URC -- Any I/O bus on the I/O card
3. See Part locations and location codes to find the diagram of the system unit or the expansion unit and perform the following:
   • Find the IOP card location identified by the direct select address.
   • Find all the storage devices on the same I/O (SCSI) bus.
4. Replace the failing device. Use the device type to determine the part.
5. If there is no problem analysis procedure associated with the reference code being serviced, perform the IOPIP16 procedure to isolate the possible failing device.