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Fliptronic flipper test points

Test point 1 is the middle (hold) lug of the coil and 3 is the end lug where the diode anode joins. Test points 2 (power/activate outputs) and 4 (hold outputs) are at J802 on the flipper board; 5 is the end-of-stroke inputs at J806 and 6 the button inputs at J805. Start a game or enter test mode first, then ground points only briefly.

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Source: Pinball Machines: How They Work & Troubleshooting, Norbert Snicer