28 Oct
2018
28 Oct
'18
11:14 a.m.
On Sun, Oct 28, 2018 at 6:10 PM Rob Jarratt <robert.jarratt at 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