IBM H Series Installation And Service Manual page 144

Table 3-1 (Page 35 of 40). Firmware Error Codes.
Error Code Description
4B2xxx11 Machine Check - 1 (Stuck Active)
4B2xxx41 ABIST fail
4B2xxx42 ABIST fail
3-36
RS/6000 Enterprise Server Model H Series Installation and Service Guide
Action / Possible Failing FRU
1. Remove processor card in processor
card connector 2 (if installed) and see
if the problem is resolved. If problem
is resolved replace processor card
else continue.
2. Exchange processor card in processor
card connector 1 with processor card
removed from slot 2 in step 1 (replace
processor card if only one processor
card is installed) and see if the
problem is resolved. If problem is
resolved replace processor card else
continue.
3. Replace the system board.
1. CPU Card in processor card connector
1.
2. I/O board (See notes on 3-1.)
1. CPU Card in processor card connector
2.
2. I/O board. (See notes on 3-1.)