Here is an interesting fix that may help others:
The top right EOS switch is not registering in dedicated switch test.
The Black Black wire shared between the 3 flipper EOS switches has connectivity between them.
The Black Red wire on the top right flipper EOS which goes to J601-5 and through the pass through connector J17-4 has connectivity to both connectors.
The EOS switch physically closes correctly and provides connectivity.
I reseated both connectors.
This sounds like an I/O Board issue. To be sure, I shorted J601-1 (black black ground wire) to J601-5 (Top Right Flipper EOS) and it did not register in dedicated switch test. I shorted J601-1 to J601-7 (Left flipper EOS) and it did register, just to ensure the paper clip was working.
I'll add more info when JJP sends a new I/O Driver board. I spoke with Frank today (10/11/2016) and they will send a new I/O Board.
10/18/2016 Update:
I replaced the I/O Driver board. It took 45 minutes and a pain in the neck since you have to raise and lower the play field to get to the front and back.
It did not solve the EOS switch problem on the top flipper. So I shorted the pins and this time it did work. Hmmmm. I realized what I did. I pushed the paper clip into the metal area of the connector and pushed the connector to the left or away from the board. I guess I was gentler when I did it before.
The EOS switch registered then it didn’t. I checked each pin and it was in correctly. I then stood on the left side of the cabinet and bent the connector towards me and tested the flipper and the switch worked. Then I left go and it didn’t. So I gently bent it more to the left side of the cabinet (or towards me as I was standing) and it is now at a slight angle and appears to work.
Therefore, it was probably not the I/O board although I got practice replacing it.
Thanks
Michael