Sony Color Videocorder AV-8650 Service Manual preceeded by 39 pages "Supplement No. 1". (2 copies) Volume 1 Videcorder Manual includes General DEscription, Circuit Description, Disassembly, Mechanical Maintenance, Adjustment, Servo System Adjustment, Video System Alignment, Editing System Alignment, Audio System Alignment. Illustrated with block diagrams, schematics, and photographs.