I had a problem with the mains transformer, I did not know the voltages on the secondary, this manual helped me to solve this problem, thanks for the manual!
Good qulity. Even as it is an old manual (from 1991-1992) it has a good scanned quality and is complete, including user's manual, disassembly intructions, diagrams and schematics, ajustments, troubleshooting and parts list, as usual with SONY manuals and Owner-manuals service.