The Good News: With advice from Victor and PinballinReno, I was able to determine several of my switch problems. One sling switch was missing a diode. One switch had a diode on backwards. One switch had the White wire on the wrong end of the switch. The Trap Door down switch was being permanently closed due to the spring on the coil holding switch closed (moved switch away from spring). Return lane switch was stuck closed by rubbing on the PF and staying down.
All lessons learned about switches and how sensitive they are in physical position and wiring.
I am also learning about this damn Switch Matrix and how it can confuse you by the errors that the Test function displays.
For example: during Single Switch Test mode, if you close a switch that was identified as an error, it is supposed to show you the switch number and colors of wire it should be. However, in error mode it can give you a different switch number and color wire of a switch next to it in the column or row. If you pulse the switch slowly, you can see the real number and color of wire for a second and then holding the switch closed, you see the switch next to it or on the end of the row or column.
Here is a YouTube video describing what I am seeing.
and
The Bad News: My current problem is that if I close the coin door, the pinball machine goes into SLAM TILT mode. Which is switch just above it in the Matrix Row. Now SLAM TILT switch works like it supposed to. With coin door switch (# 22) unhooked, the machine tells you to close the coin door. All the wires from CPU Switch connectors have been traced correctly to all the Switches on the PF (Green and White), so it is not a broken wire or a wire placed wrong in the connectors.
Switch # 21 Slam Tilt works
Switch # 31 Opto Popper says it's in error
Switch # 41 (E)SCAPE thinks it is switch # 42
Switch # 51 (R)EPAIR thinks it is switch # 52
Switch # 61 Left Pop Bumper thinks it is switch # 62
Switch # 57 Trap Door thinks it is closed in error mode but not in test mode.
Switch # 26 Pinball 2 shows up in error mode also.
On top of all of that, the MPF has NO CW or CCW errors. Even though I have tried switching the polarity of wires going to the motor.
I am not complaining, just stating the current state of affairs, as I work through the last of these issues. I wish I had more room to put the PF back on the Rotisserie but I don't right now. Plus I am still disabled and am not supposed to lift heavy objects. I am having hard enough time just walking with a walker.