Simplest AM configurations (AMC) of CB-SMBHs and corresponding light curves when the companions pass through periastron. ℓ_p, ℓ_orb, and ℓ_s denote the AM of the primary, the orbital, and the secondary black holes, respectively. O is the mass center of the binary. Tidal interaction between mini-disks and SMBHs leads to two types of quenching modes: (1) fast gains of AM for prograde mini-disks (Case A) from the binary orbit, and (2) precursor-flaring and quenching for a retrograde mini-disk (the secondary in Case B). The precursor flaring is caused by the rapid loss of AM of the tidal part so that accretion in the remainder of the mini-disk is accelerated. Here represents the increased luminosity due to the enhanced accretion for the primary and the secondary BHs, respectively (see text for details).