Two alphanumeric display boards: glasses do not swap between them
System 80B games may have either display board MA-644 with XO-840 glasses or MA-644F with XO-870 glasses. Whole boards swap freely, but the glasses do not move from one board type to the other because their pin numbering differs even though they work the same electrically. Tell them apart by where the glass vacuum exhaust tip sits.
Systems
Related tips
- System 80B alphanumeric displays dark: check the display board supply
- What System 80B changed: three new boards
- Score display boards by generation
- System 80B display board connector A4J1
- Guarding the fill tip on the back of a score display
- System 80 schematics' 'offset' voltages are DC bias for the display filaments
- System 80B display driver chips 10939 and 10941
- System 80B displays stuck in reset
Source: Premier Technology Parts Catalog (System 80, 80A and 80B), Gottlieb / Premier