Silicon Chip magazine, November 2005 issue, in PDF form at 15.4 MB; the trailing number in the name suggests a duplicate copy. The magazine, published in Australia, combines DIY project articles with schematics, board layouts and parts lists, plus features on servicing and technology. Specific projects are not named in the file name, so check the index pages inside. It is useful as a source of tested circuits for power supplies, audio and test gear, and for background on repair techniques of the period.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @pdf_servicemanual. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.