Ball trough optos from Baywatch on

Baywatch added one LED and receiver above trough position one to confirm a ball has been kicked out to the shooter lane. Later games moved to two opto pairs in the trough.

Systems

• Data East/Sega CPU Version 3b

Games

• Batman Forever
• Baywatch

Related tips

• "Ball missing" errors or extra balls served (roller switch trough)
• Find a bad trough switch with Easy Trough Clear
• Trough roller switch diodes get crushed
• Three-ball troughs on early Data East games
• Two flipper boards on WWF Royal Rumble and Baywatch
• Using the Portals service menu (Baywatch and Batman Forever)
• Baywatch: CPU and display EPROM types and latest versions
• Baywatch and Batman Forever: reaching the switch and lamp tests

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