Using this adapter, you can connect an Apple II GS with a television which has a component video input. Most Japanese televisions have D inputs and you can input component video signal using a component-D conversion cable.
Apple II GS
Adjust color and luminance by the volumes BVR, YVR and RVR on the adapter.
There was old Analog RGB Component Adapter dedicated to PC-8801mkII SR or later. It has a DSUB15 connector, but wiring is different. Don't use Analog RGB Component Adapter for PC-8801mkII SR or later with an Apple II GS.