AS2518-18/-49 connector functions
J1 (playfield): pins 1-2 GI return, 5 and 8 GI 7.3 V AC, 6 +43 V solenoid bus, 7 and 9 +5.4 V feature lamp bus (pin 9 only on -49). J2 (cabinet): pin 1 GI, 2 +43 V, 5 GI return, 6-7 AC line high and low, 9 flipper solenoid return, 10 AC line ground. J3 (backbox): pins 1-2 GI return, 3, 4 and 14 feature lamp returns (lamp driver J4-2, J4-1, J4-11), 5 +230 V to driver J3-6, 6 +5.4 V feature lamp bus, 8 +11.9 V to driver J3-12, 9 +43 V to the flipper relay (driver J3-5; via sound board J1-9 on Lost World and later), 10-11 GI, 12 +43 V zero cross to MPU J4-15, 13 +43 V to sound J1-9 on many games. Returns: J3-15 and J3-17 are the +11.9 V regulator returns (driver J3-21 and J3-10), J3-16 and J3-18 the +230 V regulator returns (driver J3-22 and J3-3), J3-19 and J3-20 the solenoid returns (driver J3-23 and J3-24).
Systems
Related tips
- Pre-Xenon rectifier board outputs by connector
- Rectifier board J3 pin functions (pre-Xenon backbox transformer)
- Burnt rectifier J3 pins 8 and 17
- Replace browned rectifier header pins and housing pins together
- Early Bally SS rectifier board: worn ground mounting pad and cracked header pins
- Only the GI lights and the MPU won't boot: bad connection at J3
- Upgrading the AS2518-18 / -49 rectifier board
- After a while all solenoids except flippers drop out until power cycle: rectifier board
Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part One, Clay Harrell (pinrepair.com)