Audio circuit: http://www.pinballzone.com/forums/mvsjammaswitchbo6.jpg Audio discussion: https://forums.arcade-museum.com/showthread.php?t=431021 Sync circuit: https://klovimg.com/images/2018/06/27/SYNCCOMB.gif Sync discussion: https://forums.arcade-museum.com/showthread.php?p=3827307#post3827307 Coin counter: https://basementhobbies.files.wordpress.com/2011/12/uzebox-jamma.pdf
Audio circuit: http://www.pinballzone.com/forums/mvsjammaswitchbo6.jpg
Audio discussion: https://forums.arcade-museum.com/showthread.php?t=431021
Sync circuit: https://klovimg.com/images/2018/06/27/SYNCCOMB.gif
Sync discussion: https://forums.arcade-museum.com/showthread.php?p=3827307#post3827307
Coin counter: https://basementhobbies.files.wordpress.com/2011/12/uzebox-jamma.pdf