Get the on-screen help for a dead coil

Steps

• Enter the solenoid test and step to the coil that does nothing; the display names the coil and its number.
• Put the test in repeat mode for that coil.
• Press the credit button. The help screen shows the wire colours, the power driver connector and pin, the driver and pre-driver transistor locations and the fuses involved.
• Find the coil with the solenoid location chart in the game manual and the parts on the board layout.

Systems

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

Related tips

• No coils work at all, fuses are good
• Checking for power at a coil with the game on
• Coil-not-working checklist
• Grounding test for WPC coils 1-8
• Spotting the +50 V wire on a coil
• No 50 V coils work
• Checking the coil supply at TP6
• Old Williams SA/SG 23-850 coils and their AE/AL replacements

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