Press Start during the solenoid test for a coil's wiring details

In the solenoid test, pressing the Help or Start button shows the selected coil's wire colors, its driver-board connector and pins, its fuse number and rating, and the driver and pre-driver transistor numbers. For example a TIP36 shown with a TIP102 and an MPSD52 as its pre-drivers.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• One coil does nothing in the solenoid test
• A solenoid will not fire in the solenoid test
• No coils work at all, fuses are good
• A coil does nothing although its fuse is good
• Coil-not-working checklist
• Grounding test for WPC coils 1-8
• No 50 V coils work
• Checking the coil supply at TP6

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Two, Clay Harrell (pinrepair.com)