Fanuc AC Spindle Servo Maintenance Manual Fanuc AC Spindle Servo Unit Models: 1, 2, 3, 6, 8, 12, 15, 18, 22, 30, 40,1S, 1.5S, 2S, 3S, 2H and 2VH; Maintenance Manual. Includes: Manufacturers: Fanuc Models: 1 1.5S 12 15 18 1S 2 22 2H 2S 2VH 30 3S 40 6 8 3 Contents: Maintenance Manual