Victory Glass is *THE* source for copyrighted jukebox manuals and reproduction/NOS parts:
70-3321 (R-370) MM-3 "Music Miracle" & MM-4 "Trimount"
Service Manual only, 164 Pages, $39.95
70-3322 (R-371) MM-3 "Music Miracle" & MM-4 "Trimount"
Parts Catalog only, 126 pages, $35.00
-----OR-----
a package deal, both manuals:
70-3323 (R-370A) MM-3 "Music Miracle" & MM-4 "Trimount" Combination package. SPECIAL OFFER for R-370 Service and R-371 Parts manuals, $64.95
The above are NOT cheap photocopies. They are professional offset printed manuals with all halftone pictures crystal clear and with razor sharp schematics.
http://www.victoryglass.com/