Samick DCP-8 Manual page 51

Press the Default Key (F5).
Once you have pressed the Default Key, the DCP-8 will automatically be
back in Performance Mode, with the selected Function Mode parameter returned
to its default value.
NOTE
While in Function Mode, if you happen to press the Default Key without first
choosing an Function Mode parameter, the DCP-8 will be returned to
Performance Mode, with no other changes.
To clear all battery backed memory and restore all functions to their factory
defaults, follow the Factory Reset procedure described in the Appendix.
For information regarding the default values of all the various functions of
the piano, please see Appendix :Defaults.
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