Bus SRN to FRU Reference Table
The following bus SRN to FRU reference table is used to locate defective FRUs within
an I/O planar PCI bus. If the system you are diagnosing produces a service request
number (SRN) that is contained in the following table, the bus and PCI slots for that bus
are identified.
Note: If you were directed here because you received a firmware error code
26800Dxx, the value of the xx represents the failing PCI bus. In the following
table, use the PCI bus xx to isolate the failing device.
Using the diagnostic test that produced the SRN, use the following procedure to identify
the failing FRU.
1. Remove power from the system.
2. Based on the SRN or error code you received, remove the adapters from the PCI
bus slots identified in the following table.
3. Restore power to the system.
4. Rerun the test that produced the original SRN or error code.
5. If a failure is detected on the I/O drawer with the adapters removed from the failing
I/O bus, the I/O drawer planar is the isolated FRU, replace the I/O planar.
If a failure is not detected, reinstall the adapters one at a time, into their original slot
location. Retest the configuration until a failure is detected. The last adapter
installed is the failing adapter; replace that adapter.
If a failure is not detected, and all the FRUs have been tested, call your next level of
support for assistance.
SRN Bus Identification Possible Failing Device and AIX
Location Code
Associated FRU
I/O Drawer 0 of 3 (Primary)
9CC-100 PCI Bus 00 Device installed in I/O slot 5
(10-58 to 10-5F or 1B-XX)
I/O planar or adapter
Device installed in I/O slot 6
(10-60 to 10-67 or 1C-XX)
I/O planar or adapter
Device installed in I/O slot 7
(10-68 to 10-6F or 1D-XX)
I/O planar or adapter
Device installed in I/O slot 8
(10-70 to 10-77 or 1E-XX not used
by AIX)
PCI Slot 8 Service Processor ISA
Bridge (10-78 to 10-7F or 1F-XX
not used by AIX)
I/O planar or adapter
I/O Planar or Service
Processor
9CC-101 PCI Bus 01 Device installed in I/O slot 1
(20-58 to 20-5F or 2B-XX)
I/O planar or adapter
Device installed in I/O slot 2
(20-60 to 20-67 or 2C-XX)
I/O planar or adapter
Device installed in I/O slot 3
(20-68 to 20-6F or 2D-XX)
I/O planar or adapter
440 Service Guide
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