IBM pSeries 690 User Manual page 38

8 Key
This option is used by service personnel. To enter the open firmware command line, press the numeric 8
key after the word keyboard displays and before the last word speaker displays during startup. After you
press the 8 key, the remaining POST indicators display until initialization completes.
When initialization and POST are complete, the open firmware command line (an OK prompt) displays.
This option should only be used by service personnel to obtain additional debug information.
To exit from the open firmware command prompt, type reset-all or power off the system and reboot.
22 Eserver pSeries 690 User's Guide