Not entirely. I attached the “most circulated” diagram for PM8500. The thread itself no longer exists.
The 47k pull-down resistor introduces too high of a voltage drop, resulting in low input signal and therefore the PSU is always on. Lower values like 10k resulted in momentary high signal, then low again, so the PSU would turn on, then off again after 1 second or so. Using 1k pull-down resistor would and up having the PSU always off. So I ended up using a trim pot to tune the proper resistance and then measuring it for a proper pull-down resistor value. It was 5.9k ohm.