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 2-36 unless otherwise indicated in the tables.
Table
3-3. Memory Module PD bits
PD
value
Size
Clock Cycle
(nsecs)
Parity/
ECC
58
32MB
10
ECC
38
128MB
10
ECC
68
256MB
10
ECC
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
Possible Failing Device and AIX
Location Code
Associated
FRU
9CC-100
PCI Bus 00
Internal SCSI port 1 (10-60)
I/O board. (See
notes on 3-1.)
Internal Ethernet port (10-80)
I/O board. (See
notes on 3-1.)
Device installed in I/O Slot 3P (10-68
to 10-6F)
Adapter
Device installed in I/O Slot 4P (10-70
to 10-77)
Adapter
3-40
RS/6000 Enterprise Server Model H Series Installation and Service Guide
Summary of Contents for H SERIES RS/6000
Page 1: ...RS 6000 Enterprise Server Model H Series IBM Installation and Service Guide SA38 0547 01...
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Page 262: ...7 14 RS 6000 Enterprise Server Model H Series Installation and Service Guide...
Page 279: ...Chapter 7 Removal and Replacement Procedures 7 31...
Page 315: ...Chapter 8 Parts Information Chapter 8 Parts Information 8 1...
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Page 401: ...expect 8 r or 7 r or 6 r or 4 r or 3 r delay 2 done Appendix E Modem Configurations E 21...
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Page 419: ...Index X 7...
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