Kalkomat Comboboxer Technical Information page 51

Press the SW1 button repeatedly on the main board until the main
display reads 'P43'. If you get too far on this menu you can always
get back with the SW2 button.
SW1
SW2
Use the START BOXING and GAME buttons to adjust the value
of the magic number as desired. Press the SW2 button to get to
setting 'P42', which is the minimum amount of credits collected by
the machine to unlock the possibility of hitting that number. Here
again use the same buttons to adjust the value. Remember that this
value is counted in quarters. In this example the machine collects
$100 before unlocking the magic number (400 quarters = $100). It
becomes possible then for the player to hit the bag and get a score of
'777'. The two pictures illustrate the magic number setting for this
case.
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