Kalkomat Comboboxer Technical Information page 54

Press the SW1 button repeatedly on the main board until the main
display reads 'P86'. If you get too far on this menu you can always
get back with the SW2 button.
Using START BOXING button on the front of the machine set
number of hours (counted from the last resetting) after which the
highest score should be reset automatically, eg. set 120.
Then press the SW1 button once - the main display should read
'P87'. Using START BOXING button on the front of the machine
set number of minutes (counted when machine is in idle state after
the time set in P86 above has already passed) after which the highest
score will be reset, eg. 15. Put dip switch #1 back to OFF.
SUMMARY: With above settings the machine will count 120 hours
from the last resetting (either manual or automatic), and then, if
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