Datasheets, service manuals, circuits, electronics, components, CAD
https://www.radioradar.net/en/service_manuals/videotechnics_circuits/sony_slv-l56ar_x.html
Sony SLV-L56AR, L76HFAR, L86HFAR
Schematic diagram, oscillograms at the control points of the videorecorder Sony SLV-L56AR, L76HFAR, L86HFAR