Clearing a switch from the power-on switch report

From Phantom of the Opera on, the game lists switches at power-on that have not closed for several games or are stuck closed. A target that players rarely hit can be flagged wrongly. Take the glass off and close the switch by hand during a game or in the switch edge test, and it drops off the report.

Systems

• Data East CPU Version 1/2
• Data East CPU Version 3
• Data East/Sega CPU Version 3b

Related tips

• What a bad switch diode does
• Switch row or column error: CPU board or playfield?
• Use a real ball in the switch test
• Whole switch column dead after working under the playfield
• Closing one switch shows its whole row closed
• A single switch does not register
• Test a leaf switch diode in place
• Check the switch matrix with a logic probe

Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Three, Clay Harrell (pinrepair.com)