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The dynamical mechanism of channel coupling with the decay channels isapplied to the case of coupled charmonium - $DD^*$ states with $J^{PC}=1^{++}$.A pole analysis is done and the $DD^*$ production cross section is calculatedin qualitative agreement with experiment. The sharp peak at the $D_0D^*_0$threshold and flat background are shown to be due to Breit-Wigner resonance,shifted by channel coupling from the original position of 3954 MeV for the$2^3P_1$, $Q\bar Q$ state. A similar analysis, applied to the $n=2$, $^3P_2$,$^1P_1$, $^3P_0$, allows us to associate the first one with the observed$Z(3930)$ J=2 and explains the destiny of $^3P_0$.

Dynamical origin and the pole structure of X(3872)