I've lost the original manuals and the circuit diagram. However, "FT-847_Schematic.pdf" provided by VE3FFR is excellent, and all I need for now.
I need a legible circuit diagram because there is a problem with my FT-847 transceiver: Low RX Sensitivity on 144 MHz. I'll share with the group if I can solve the problem.
73 OZ1BXM Lars