Yes in the 80s electronic equipment like TVs even came with electrical schematics in the box. Not really intended for most end users (repairing a CRT is quite dangerous if you don’t know what you’re doing) but to help the repair guy. No extended warranty scams, no approved dealers get parts only. Just all the help they could offer.

Now there’s a one page leaflet in the box showing where the on button is and for the rest you’ll have to find the pdf.

Software came with thick ring binders describing every feature and updates came with inserts to put at the right places in the binders. Manuals actually were useful.