I'm having an issue with the L/R solenoid relay on the DE Simspons I'm working on righ tnow, and if I go into the adjustments menu I see:
Error Flag IC87
Of course the thin Simpsons manual has no lookup for Error Flags--does anybody have a resource for how to figure out what this error message is indicating?
Also, are there any board schematic and part diagrams out there for this era of DE games? Would love to track down any service manuals if they exist