Where the WPC coil and lamp drivers sit
High-power coils 1-8 use TIP36C transistors (coil 1 Q82, 2 Q80, 3 Q78, 4 Q76, 5 Q64, 6 Q66, 7 Q68, 8 Q70). Low-power coils 9-16 use TIP102s at Q58, Q56, Q54, Q52, Q50, Q48, Q46, Q44. Flash lamp outputs 17-20 use TIP102s at Q42, Q40, Q38, Q36, and general purpose 21-28 use TIP102s at Q28, Q30, Q34, Q32, Q26, Q24, Q22, Q20.
Systems
Related tips
- How a WPC coil, flasher or lamp driver chain works
- Which transistor drives which WPC solenoid and lamp circuits
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Source: Pinball Machines: How They Work & Troubleshooting, Norbert Snicer