On Sun, Oct 28, 2018 at 6:10 PM Rob Jarratt <robert.jarr...@ntlworld.com> wrote:
> Thanks for the datasheet. I have to say I am not totally convinced that I > have correctly identified the reset pin on the F11 because there seems to be > a lot of logic behind it. This particular path I am pursuing now seems a bit > more promising though. I have not checked the DC OK pin yet as I wasn't sure > which one it was and I was hoping my tracing would take me back to the PSU, > but I haven't reached it yet. I suppose I have been assuming that the LED > means it is OK, but perhaps it isn't. Hopefully this 8640 will take me > closer. When you say it is pin 1 on the connector, which side are you > counting from? No idea how the pins are numbered. But the Pro380 printset seems to show pin 2 as the polarising key.And the pin at the other end of the connector is logic ground which you must be able to check. That printset includes a schematic of the PSU which might help too. -tony