The original cable, p/n is a 1700004-1 flat cable with Berg connectors on
either end so I had to find something compatible with a terminal instead.
I switched in the same BC03L-10 that I have been using to connect to a
25-pin terminal (with null modem adapter) using a newer DL11-W. (M7856).
Does your cable connect E to M?
http://www.classiccmp.org/pipermail/cctech/2015-November/012531.html
That jumper links the output of the RS232 receiver to the input of the UART,
effectively. It shouldn't matter for transmitting. If the card won't send
characters
to the terminal you need to look for other problems.
-tony