Perform this procedure with the power on and the keyswitch set to the Power-on position.
With the keyswitch in the Power-on position, press the Break key on your alphanumeric terminal's keyboard, or enter the Stop-a sequence on a Sun keyboard.
To enter the Stop-a sequence, press the Stop key and the a key simultaneously. The ok prompt is displayed.
To set the diag-level variable, enter the following:
ok setenv diag-level value
The value can be off, min, med, or max. See "OBDiag Configuration Variables" for information about each setting.