Hi Mark
After you get done doing the above measurement, this is something you should try.
Have the following wires attached to the control board. Detach and tape off the other signal wires.
12L=Attach
11L=Attach
10L=Detached and Taped
9L=Detach signal wire and attach one end of a 22 ohm 1/2W resistor
8L=Detached and Taped
7L=Attach
6L=Detach and tape signal wire. Connect other end of 22 ohm resistor attached to 9L above along with one end of a second 22 ohm 1/2W resistor to 6L
4L=Detach and tape signal wire. Connect other end of second 22 ohm resistor that was attached to 6L above.
3L=Detach and tape signal wire. Jumper to 12L above
10R=Detached and Taped
9R=Detach signal wire and attach one end of a 22 ohm 1/2W resistor
8R=Detached and Taped
7R=Attach
6R=Detach and tape signal wire. Connect other end of 22 ohm resistor attached to 9R above along with one end of a second 22 ohm 1/2W resistor to 6R
5R=Attach
4R=Detach and tape signal wire. Connect other end of second 22 ohm resistor that was attached to 6R above.
3R=Detach and tape signal wire. Jumper to 12R above
After you get done doing the above measurement, this is something you should try.
Have the following wires attached to the control board. Detach and tape off the other signal wires.
12L=Attach
11L=Attach
10L=Detached and Taped
9L=Detach signal wire and attach one end of a 22 ohm 1/2W resistor
8L=Detached and Taped
7L=Attach
6L=Detach and tape signal wire. Connect other end of 22 ohm resistor attached to 9L above along with one end of a second 22 ohm 1/2W resistor to 6L
4L=Detach and tape signal wire. Connect other end of second 22 ohm resistor that was attached to 6L above.
3L=Detach and tape signal wire. Jumper to 12L above
10R=Detached and Taped
9R=Detach signal wire and attach one end of a 22 ohm 1/2W resistor
8R=Detached and Taped
7R=Attach
6R=Detach and tape signal wire. Connect other end of 22 ohm resistor attached to 9R above along with one end of a second 22 ohm 1/2W resistor to 6R
5R=Attach
4R=Detach and tape signal wire. Connect other end of second 22 ohm resistor that was attached to 6R above.
3R=Detach and tape signal wire. Jumper to 12R above