IBM RT PC Problem Determination Manual page 218

AIX Operating System Problem Determination Guide
2-6
When the dump is complete, cO is displayed in the two-digit
display. For any other messages displayed, see "Dump Utility
Messages" on page 2-17.
YES Press CTRL-ALT-Pause to restart the operating system.
Go to "Dump Formatter" on page 2-18 and format the
dump diskette.
NO There may be a hardware problem. Go to
Problem Determination Guide
for problem determination.
If no problem is found before the "Diagnostic Selection"
menu is displayed, run "System Checkout."
IB M R T
and follow the procedures