With piano off hold down The C key all the way to the right without letting go of the key turn on piano, let go of C key once piano has fully turned on. piano manual link below

Same for the second reset: With piano off hold down The Track 1 & Track 2 keys without letting go of the keys turn on piano, let go of Track 1 & Track 2 keys once piano has fully turned on.

I didn't show it in the vid because I was recording with my second hand.
God Bless.

How Fix out of tune electric piano Behringer Concert CDP1000, CDP2000

piano manual [ Ссылка ]
read page 18

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