IBM Enterprise Server H80 Series - Manual (Page 26)

Reading the I/O Drawer Operator Panel Display
The operator panel display is used to:
Track the progress of the system unit self tests and configuration program.
Display codes when the operating system comes to an abnormal end.
Display system messages.
Checkpoints
During power-on self-test (POST), four-digit checkpoints are displayed indicating the
progress of the testing. If an error is detected that requires attention, the system unit
halts with an eight-digit error code displayed in the upper row of the operator panel
display, starting in the leftmost position. This eight-digit error code identifies the error
(see
RS/6000 Enterprise Server Model H80 Series Service Guide for a listing of the
error codes).
The four-digit checkpoints are in the form of nnnn , where n is an alphabetic or
numeric character.
10 RS/6000 Enterprise Server Model H80 Series User's Guide