1) Start with the keyboard OFF
2) Hold down the two buttons labeled Panic while turning the power ON. Continue holding until the LEDs have flashed the second time.
3) Wait for the display to show "P.L.C.", then press the Row Select button once. The display should show "CPU".
4) Press Column Select once. The display will flicker then show "rOM".
5) Press Row Select 5 times until the display shows "ini."
6) Then press Column Select once. The display will then show "ok?".
7) Press the Up arrow button. The display will flicker again briefly, dim, then show "PAS".
8) Turn the power off and then back on.