Position
Possible
failing item DSA (BBBBCcbb) Unit address
D36 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x10300FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D37 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x10400FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D38 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x10500FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D39 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x10600FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D40 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x10700FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D41 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x00600FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D42 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x00700FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D46 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x20300FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D47 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x20400FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D48 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x20500FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D49 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x20600FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
D50 Disk unit The disk unit has the same DSA as the
IOA attached to the internal flat ribbon
cable.
x20700FF (where x is the same as
the first character of the xFFFFFFF
IOA Unit Address)
Addresses — FC 5075 Expansion I/O Tower
For use by authorized service providers.
Use the address to find the location. Then go to “Locations — FC 5075 Expansion I/O Tower” on page 299
to find additional information.
Table 1. IOP, IOA, and device address information for FC 5075
Position Possible Failing Item DSA (BBBBCcbb) Unit Address
Note: IOA and device
DSA’s will not follow the
rules below if the IOA is
manually reassigned after
IPL.
Analyze hardware problems 349
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