Set positions 1, 5, and 6 of the system
maintenance switch to Off.
Repeat steps 4 and 5.
When the server boots, the system identifies
whether the current ROM bank is corrupt. If a corrupt ROM is
detected, the system boots from the backup ROM and alerts you
through POST or IML that the ROM bank is corrupt.
If both the current and backup versions of the
ROM are corrupt, the server automatically enters ROMPaq disaster