Here is the FANUC AC Spindle Servo Unit maintenance manual, publication B-53425E/05
This manual applies to 18 AC spindle servo units and its options, among them:
A06B-6044-H007 to H011, H016, H017, H112
A06B-6041-J031, J032, J110 to J112, J120, J121, J130, J131
Re: FANUC AC Spindle Servo Unit maintenance manual
FANUC
AC SPINDLE SERVO UNIT SERIAL INTERFACE S SERIES MAINTENANCE MANUAL
USED CONDITION
GFZ-65045E/04
ITEM SHOWN IS A REPRESENTATIVE UNIT, CONDITION WILL BE VERY SIMILAR
SEE ENLARGED PHOTOS FOR ADDITIONAL INFORMATION