That's the first I've heard of Funai OEM being used for Sony.

I think they only did it for 2-3 years. Actually Funai was into another design
by then and the Sony branded ones used the previous mechanism. The one with
mostly black gears that was a real PITA to change the belt to the worm gear. It
had a Sony head and Sony electronics, but the mechanics were definitely Funai.

JURB