Everything still works, the lateral servo with chain drive, the lift/lower motor, rca to cartridge clip continuity etc. As I remember, it should not be used with a low output, low compliance moving coil, due to the low tonearm mass and servo servo motor noise, but worked fine with a high compliance, high output moving magnet. There is a sensitive adjustment for the fixed post which touches a first wire to turn on/off the motor for the lateral drive, and when when a rapid large displacement (runout gooves) occurs, it touches a second wire which activated the lift motor.