Possible failing
component FRU name Position
Type or CCIN
number (see the
Type, model, and
part number list)
Remove and
replace
procedure
Additional
comments
Device board Device board DB1 or DB2 283D (See page
526) or 28CC
(See page 528)
Go to FC 5074,
FC 5079, FC
9079 - Device
board - DB1 and
DB2.
Device board Device board DB3 283C (See page
526) or 28CB
(See page 528)
Go to FC 5074,
FC 5079, FC
9079 - Device
board - DB3.
Display panel Display panel NB1 247B (See page
523)
Go to FC 5074,
FC 5079 - Display
panel - NB1.
Disk unit Disk unit D01 - D40, D46
through D50
See Type, model,
and part number
list.
Go to Recovery
procedures.
Optical Optical D41 See Type, model,
and part number
list.
Go to FC 5074,
FC 5079, FC
9079 -
Removable media
- D41 and D42.
Tape Tape D42 See Type, model,
and part number
list.
Go to FC 5074,
FC 5079, FC
9079 -
Removable media
- D41 and D42.
HSL connection HSL cable HSL cables on
the HSL ports
See Type, model,
and part number
list.
Go to HSL cables
- Concurrent.
Notes:
1. The FC 5074 Expansion I/O Tower contains two system PCI busses.
2. In the FC 5074 Expansion I/O Tower FRU locations and failing components table, the first of the two
busses in the Tower is designated as ″xxxx″ and the second bus in the Tower is designated as ″yyyy″.
3. In FC 5074 Expansion I/O Tower, the two bus numbers assigned to the busses are not required to be
in any order.
4. Card position C01 is required to be an I/O processor.
5. Card postitions C05 and C11 are required to be either I/O processors or Integrated xSeries Servers
(IXS).
6. J11 is an RPO connection, J14 is a uninterruptable power supply connector, J15 is an SPCN 1
connector, and J16 is an SPCN 2 connector.
7. Multi-adapter bridge domains are labeled PCI Bridge Set inside the Tower.
8. The following table provides information necessary to identify the IOP to which IOAs are assigned.
v The left column indicates the domain in which IOA assignment is allowed.
v The right column is used to determine the IOP to which an IOA is assigned.
v The first position in the list must be an IOP. The remaining positions may be IOPs or IOAs. IOAs are
assigned to the first IOP located to their left in the list. Although IOAs can be manually reassigned
using SST/DST, the IOA assignments return to the default order after each IPL.
298 Hardware (Remove and Replace; Part Locations and Listings)
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