Sony MPF-920-Z floppy connector PCB close-up
1) By default FDD is set up as SEL1, so it's needed to move 000 smd resisitor from JC31 to JC30 or remove it and make short in JC30 place (that's how it was done on photo)
2) Connect Media Change signal from 1 pin on pcb to SW2 .
3) HD detect (pin 2) is not connected , so the wire from pin 2 to SW3 is needed (it's optional step if only DD floppy support is needed)