DMC fault 003

Gentlemen,

does anyone have info on fault 003-001, 003-002? I seem to be missing my first page, since my faults start at 009.
Also I am curious if anyone has had luck sending off Dover boards to be repaired, we have a couple of selector and door boards that we've refrained from throwing away since they are obsolete.

Thanks

003-001 is Front door communication bad (wiring or bad door card)

003-002 is Selector Communication Bad (Wiring or Selector micro card)

Have sent boards to ECI with great results