MBM Corporation AUTOBOOK - Manual (Page 17)

Factor y Default Setting.
Press Menu button to enter option menu.
Press Enter button to reset all data to factory
default setting.
Reset all data
5.Reset all.
6.Show serial.
Data restored
015 +005
Warning! All the value in Memory will be restored
to factory default value (297mm)also.
Operation
Press Enter button to return to ready.
P.16
Select 5 Reset all by pressing scroll down button.