IBM RS/6000 44P 270 Service Manual page 121

Table 3. Firmware Error Codes. (continued)
Error Code Description
Memory Errors
Use the location code obtained from the SMS error log utility (described in "Step 1020-4" on
page 38) to identify which memory module (or memory module pair) the error is reported against.
Memory error codes are in the form 25Byyxxx where yy indicates memory module PD-bits and
xxx indicates the last 3 digits of the error code.
See "Memory Problem Determination Bits" on page 142 for information on how to interpret
PD-bits.
25B00001 No memory DIMMs detected
25B00002 Multiple memory modules failed
memory test.
25Cyy001 Memory module is not supported.
Action / Possible Failing FRU
1. Reseat any installed memory
card(s) and retry
2. Reseat any installed memory
modules on the installed memory
cards and retry.
3. Replace memory card(s).
4. Replace system board.
1. Reseat any installed memory
card(s) and retry
2. Reseat any installed memory
modules on the installed memory
cards and retry.
3. Replace memory card(s).
4. Replace system board.
Replace unsupported memory module.
Note:
A memory module must be replaced
with a supported type of memory
module. If an unsupported memory
module is replaced by the same
unsupported type, the error remains.
There may be two memory
module-related memory errors reported
to indicate a memory module pair. One
of the two indicated memory modules
may be good. When replacing memory,
replace one memory module at a time,
not both.
See "Memory Problem Determination
Bits" on page 142 for definition of "yy".
Chapter 5. Error Code to FRU Index
103