...
One bad pin is all it takes to cause your intermittent headache.
...
4. The EBDS connector cable
...
terminates at the acceptor assembly.
Move on to Section C.
...
Section C: the Acceptor
...
interface connection:
The interface (I/F) board slides into a connector at the back of the assembly. It’s possible for the connector to work loose during environmental temperature or humidity changes, not to mention routine use & handling, and vibrations while shipping. Many times a bad connection can be tracked down here.
...