Bus Srn To Fru Reference Table - IBM H Series Installation And Service Manual

Memory PD Bits
The following table expands the firmware error code 25Cyyxxx on page 3-10, where
yy is the PD values in the table below. Use these values to identify the type of
memory that generated the error.
If you replace FRUs and the problem is still not corrected, go to "MAP 1540:
Minimum Configuration" on page 2-37 unless otherwise indicated in the tables.
Table 3-3. Memory Module PD bits
PD
value
58
38
68
Note: Memory modules must be installed in pairs.

Bus SRN to FRU Reference Table

The following table is used to locate defective FRUs within the I/O board PCI and
ISA buses. The table indicates which devices should be tested for each SRN. For
this procedure, if possible, diagnostics are run on the I/O board bus devices with all
adapters removed from the failing bus. If a failure is detected on this system with all
adapters removed from the failing bus, the I/O board is the isolated FRU. If a failure
is not detected, the adapters are added back one at a time, to their original slot
location, and the configuration is tested until a failure is detected. The failure is then
isolated to the failing FRU.
If a failure has not been detected and all the FRUs have been tested call your tech-
nical service support person for assistance.
Table 3-4 (Page 1 of 2). Bus SRN to FRU Reference Table (Model H50 only)
SRN Bus Identifica-
tion
9CC-100 PCI Bus 00
3-42
RS/6000 Enterprise Server Model H Series Installation and Service Guide
Clock Cycle
Size (nsecs)
32MB 10
128MB 10
256MB 10
Possible Failing Device and AIX
Location Code
Internal SCSI port 1 (10-60)
Internal Ethernet port (10-80)
Device installed in I/O Slot 3P (10-68
to 10-6F)
Device installed in I/O Slot 4P (10-70
to 10-77)
Parity/
ECC
ECC
ECC
ECC
Associated
FRU
I/O board. (See
notes on 3-1.)
I/O board. (See
notes on 3-1.)
Adapter
Adapter