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If the Control Bank Reset relay (U) doesn't activate, Inspect and diagnose this circuit with Alligator clip jumper wires
http://www.planetimming.com/Pinball/troubleshooting/EM%20Troubleshooting.pdf
http://www.pinrepair.com/em/index3.htm#features
Quoted from KyleMikolajczyk:game not ending,
If the Last Ball relay (XB) doesn't activate when the 4th ball of a 1 player 5 ball game drains, Inspect and diagnose this circuit with Alligator clip jumper wires
http://www.planetimming.com/Pinball/troubleshooting/EM%20Troubleshooting.pdf
http://www.pinrepair.com/em/index3.htm#features
Quoted from KyleMikolajczyk:the ZB relay stays closed throughout the whole game. It seems the ZB relay should be open by the start of the 5th round?
The First Ball relay should be latched after reset and trip when you tilt, score 10 or score 100.
The First Ball relay (ZB) is on the Control bank, which gets reset at the beginning of the game, so it (the First Ball relay) gets latched then.
Scoring 10, 100, or tilting energizes the First Ball relay coil, tripping its mechanism, and it stays in that tripped state for the remainder of the game, until the next game starts up.
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