Sharp R1900M microwave oven Main control circuit board (PCB)- DPWB-A665DRKZ1
Part number DPWB-A665DRKZ1 Item 3-1 on diagram. Buffalo GK640, Buffalo GK641 cooling fan assembly - DE31-10180A. Buffalo GK642, Buffalo GK643 cooling fan assembly - DE96-00108C. Part number DPWB-A665DRKZ1.